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User Manual: MH52

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SERVICE MANUAL

FRYMASTER MH52 AND BIH52 SERIES

GAS FRYERS

TABLE OF CONTENTS

WARRANTY STATEMENT .................................................................................................. Page i

INTRODUCTION .................................................................................................................. Page 1-1

INSTALLATION INSTRUCTIONS ........................................................................................ Page 2-1

SERVICE PROCEDURES, TROUBLESHOOTING, AND WIRING DIAGRAMS ................. Page 3-1

PARTS LIST.......................................................................................................................... Page 4-1

Frymaster, L.L.C. 8700 Line Avenue 71106, 5489 Campus Drive 71129

P.O. Box 51000, Shreveport, Louisiana 71135-1000

TEL 318-865-1711 FAX (Parts) 318-219-7140 (Tech Support) 318-219-7135

PRINTED IN THE UNITED STATES SERVICE HOTLINE 819-5423 APR 2002

FOR YOUR SAFETY

Do Not Store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other appliance.

This equipment chapter is to be

installed in the Fryer Section of the

Equipment Manual.

MANUFACTURED

FRYMASTER, L.L.C.

P.O. BOX 51000

SHREVEPORT, LOUISIANA 71135-1000

PHONE: 1-318-865-1711

TOLL FREE: 1-800-551-8633

1-800-24 FRYER

FAX: 1-318-219-7135

1-800-24-FRYER U.S. $10.00

WARNING

IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE PROPERTY

DAMAGE, INJURY OR DEATH. READ THE INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS

THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT.

WARNING

FOR YOUR SAFETY, DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE

VICINITY OF THIS OR ANY OTHER APPLIANCE.

COMPUTERS

FCC

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: 1)This

device may not cause harmful interference, and 2) This device must accept any interference received, including

interference that may cause undesired operation. While this device is a verified Class A device, it has been

shown to meet the Class B limits

CANADA

This digital apparatus does not exceed the Class A or B limits for radio noise emissions as set out by

the ICES-003 standard of the Canadian Department of Communications.

Cet appareil numerique n'emet pas de bruits radioelectriques depassany les limites de classe a et b

prescrites dans la norme NMB-003 edictee par le ministre des communications du Canada.

WARNING

THIS PRODUCT CONTAINS CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER AND/OR

BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.

Operation, installation and servicing of this product could expose you to airborne particles of glasswool or ceramic fibers,

crystalline silica, and/or carbon monoxide. Inhalation of airborne particles of glasswool or ceramic fibers is known to the

State of California to cause cancer. Inhalation of carbon monoxide is known to the State of California to cause birth

defects or other reproductive harm.

FRYMASTER FRYERS ARE MANUFACTURED FOR USE WITH THE TYPE VOLTAGE AND GAS SPECIFIED ON THE

FRYER RATING PLATE LOCATED ON THE FRYER DOOR. FOR PROPER ELECTRICAL INSTALLATION

PROCEDURES IN THE UNITED STATES, REFER TO THE LATEST EDITION OF THE NATIONAL ELECTRIC CODE

ANSI/N.F.P.A. NO. 70; IN CANADA, CANADIAN ELECTRICAL CODE PART 1, CSA-22.1. FOR INSTALLATION IN

COUNTRIES OTHER THAN THE UNITED STATES AND CANADA, REFER TO THE NATIONAL CODE APPROPRIATE

FOR THE COUNTRY IN WHICH THE EQUIPMENT IS BEING INSTALLED. FOR GAS COMPONENTS, INSTALLATION

IS TO COMPLY WITH THE BASIC PLUMBING CODE OF THE BUILDING OFFICIALS AND CODE ADMINISTRATORS

INTERNATIONAL, INC. (BOCA) AND THE FOOD SERVICE SANITATION MANUAL OF THE U.S. FOOD AND DRUG

ADMINISTRATION (US FDA) OR THE APPLICABLE NATIONAL AND LOCAL REGULATIONS OF THE COUNTRY IN

WHICH THE EQUIPMENT IS BEING INSTALLED.

INFORMATION ON THE CONSTRUCTION AND INSTALLATION OF VENTILATING HOODS MAY BE OBTAINED FROM

THE LATEST EDITION OF THE "STANDARD FOR THE INSTALLATION OF EQUIPMENT FOR THE REMOVAL OF

SMOKE AND GREASE LADEN VAPORS FROM COMMERCIAL COOKING EQUIPMENT,” N.F.P.A. NO. 96. COPIES OF

THESE ELECTRICAL STANDARDS ARE AVAILABLE FROM THE NATIONAL FIRE PROTECTION ASSOCIATION,

BATTERY MARCH PARK, QUINCY, MASS. 02269

WARRANTY STATEMENT

The following applies to equipment sold to domestic (U.S.) markets. International warranty

provisions will vary depending upon the country in which the equipment is sold. See your dealer

for specific warranty provisions applicable to your location. For all international warranties, the

customer is responsible for freight and duty charges.

Frymaster, L.L.C. makes the following limited warranties to the original purchaser only for this

equipment and replacement parts:

A. WARRANTY PROVISIONS - FRYERS

1. The Frymaster Corporation warrants all components against defects in material and

workmanship for a period of one year.

2. All parts, with the exception of fuses and filter O-rings, are warranted for one year after

installation date of fryer. (See Sections B and C for frypot and combustion chamber

warranty duration.)

3. If any parts, except fuses and filter O-rings, become defective during the first year after

installation date, Frymaster will also pay straight-time labor costs to replace the part, plus up

to 100 miles/160 km of travel (50 miles/80 km each way).

B. WARRANTY PROVISIONS - FRYPOTS

(Applies to fryers installed on or after November 1, 1994, only.)

1. If a frypot develops a leak within seven years after installation, Frymaster will replace the

frypot, allowing up to the maximum time per the Frymaster time allowance chart of straight-

time labor plus up to 100 miles/160 km of travel (50 miles/80 km each way) to change the

frypot.

2. This warranty is limited to fryers operating on natural or propane (LP) gas. Fryers that

operate on manufactured gas (also known as town gas or high-hydrogen gas) have a lifetime

frypot warranty, parts only.

C. WARRANTY PROVISIONS – COMBUSTION CHAMBERS

(Applies to fryers installed on or after November 1, 1994, only.)

1. The Frymaster Corporation warrants the combustion chambers against defective material or

workmanship for a period of seven years from the original installation date, parts and labor.

2. The combustion chamber consists of the infrared burners and the structural components to

mount the burners. This warranty does not cover ancillary components, including the ignitor,

blower, high-limit thermostat, and temperature probe.

3. This warranty is limited to fryers operating on natural or propane (LP) gas.

D. WARRANTY PROVISIONS - COOKING COMPUTER

1. The Frymaster Corporation warrants the M-100B Cooking Computer against defective

material or workmanship for a period of one year from the original installation date, parts and

labor. Replacements for defective units during the second and third year are available at a

reduced rate.

2. During this warranty period, Frymaster will, at its option, repair or replace defective cooking

computer returned with new or factory rebuilt and functionally operative units.

3. For replacement of defective computers under warranty, call your local Frymaster Factory

Authorized Service Center. All computers replaced under the Frymaster exchange program

are covered by a one-year (parts only) warranty.

E. PARTS RETURN

All defective in-warranty parts must be returned to a Frymaster Authorized Factory Service

Center within 60 days for credit. After 60 days, no credit will be allowed.

F. WARRANTY EXCLUSIONS

This warranty does not cover equipment that has been damaged due to misuse, abuse, alteration,

or accident such as:

• improper or unauthorized repair (including any frypot which is welded in the field);

• failure to follow proper installation instructions and/or scheduled maintenance procedures as

prescribed in your MRC cards (proof of scheduled maintenance is required to maintain the

warranty);

• improper maintenance;

• damage in shipment;

• abnormal use;

• removal, alteration, or obliteration of either the rating plate or the date code on the heating

elements;

• operating the frypot without shortening or other liquid in the frypot;

• no fryer will be warranted under the seven-year program for which a proper start-up form has

not been received.

This warranty also does not cover:

• transportation or travel over 100 miles/160 km (50 miles/80 km each way), or travel over two

hours;

• overtime or holiday charges;

• consequential damages (the cost of repairing or replacing other property which is damaged),

loss of time, profits, use or any other incidental damages of any kind.

There are no implied warranties of merchantability or fitness for any particular use or purpose.

1-1

CHAPTER 1: INTRODUCTION

1.1 General

Read the instructions in this manual thoroughly before attempting to service this equipment. This

manual covers all configurations of models MH52 and BIH52 fryers built since December 1995.

Models designated MH52 do not have built-in filtration systems. Models designated BIH52 are

equipped with FootPrint III built-in filtration systems.

H52 Series fryers feature deep cold-zones and easy to clean open frypots. The fryers are controlled by

multi-product cooking computers or optional thermostat controllers. Fryers in this series come in full

or split-pot arrangements, and can be purchased as single units or grouped in batteries of up to five

fryers.

1.2 Safety Information

Before attempting to service this equipment, read the instructions in this manual thoroughly.

Throughout this manual, you will find notations enclosed in double-bordered boxes similar to the ones

below.

CAUTION boxes contain information about actions or conditions that may cause or result in a

malfunction of the system.

CAUTION

Example of a CAUTION box.

WARNING boxes contain information about actions or conditions that may cause or result in

damage to the system, and which may cause the system to malfunction.

WARNING

Example of a WARNING box.

DANGER boxes contain information about actions or conditions that may cause or result in injury to

personnel, and which may cause damage to your system and/or cause the system to malfunction.

DANGER

Hot cooking oil causes severe burns. Never attempt to move a fryer containing hot

cooking oil or to transfer hot cooking oil from one container to another.

Fryers in this series are equipped with automatic safety features:

1. A high-limit thermostat causes the gas valve to close should the controlling thermostat fail or

computer temperature probe fail.

2. In BIH52 fryers, a safety switch built into the drain valve prevents the gas valve from opening

with the drain valve even partially open.

1-2

1.3 Computer Information

This equipment has been tested and found to comply with the limits for a Class A digital device,

pursuant to Part 15 of the FCC rules. While this device is a verified Class A device, it has been shown

to meet the Class B limits. These limits are designed to provide reasonable protection against harmful

interference when the equipment is operated in a commercial environment. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and used in accordance with the

instruction manual, may cause harmful interference to radio communications. Operation of the

equipment in a residential area is likely to cause harmful interference in which case the user will be

required to correct the interference at his own expense.

The user is cautioned that any changes or modifications not expressly approved by the party

responsible for compliance could void the user's authority to operate the equipment.

If necessary, the user should consult the dealer or an experienced radio and television technician for

additional suggestions.

The user may find the following booklet prepared by the Federal Communications Commission

helpful: "How to Identify and Resolve Radio-TV Interference Problems". This booklet is available

from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

1.4 European Community (CE) Specific Information

The European Community (CE) has established certain specific standards regarding equipment of this

type. Whenever a difference exists between CE and non-CE standards, the information or instructions

concerned are identified by means of shadowed boxes similar to the one below.

CE Standard

Example of box used to distinguish CE and

Non-CE specific information.

2-1

CHAPTER 2: INSTALLATION INSTRUCTIONS

2.1 General Installation Requirements

NOTE: PROPER INSTALLATION IS ESSENTIAL FOR EFFICIENT, TROUBLE-FREE

OPERATION OF YOUR FRYER. ANY UNAUTHORIZED ALTERATIONS MADE TO THIS

EQUIPMENT WILL VOID THE FRYMASTER WARRANTY.

Upon arrival, inspect the fryer carefully for visible or concealed damage. (See Shipping Damage

Claim Procedure in Chapter 1.)

CLEARANCE AND VENTILATION

The fryer(s) must be installed with a 6” (150 mm) clearance at both sides and back when installed

adjacent to combustible construction; no clearance is required when installed adjacent to noncom-

bustible construction. A minimum of 24” (600 mm) clearance should be provided at the front of the

fryer.

One of the most important considerations of efficient fryer operation is ventilation. Make sure the

fryer is installed so that products of combustion are removed efficiently, and that the kitchen ventila-

tion system does not produce drafts that interfere with proper burner operation.

The fryer flue opening must not be placed close to the intake of the exhaust fan, and the fryer must

never have its flue extended in a “chimney” fashion. An extended flue will change the combustion

characteristics of the fryer, causing longer recovery time. It also frequently causes delayed ignition.

To provide the airflow necessary for good combustion and burner operation, the areas surrounding

the fryer front, sides, and rear must be kept clear and unobstructed.

Fryers must be installed in an area with an adequate air supply and adequate ventilation. Adequate

distances must be maintained from the flue outlet of the fryer to the lower edge of the ventilation

filter bank. Filters should be installed at an angle of 45º. Place a drip tray beneath the lowest edge of

the filter. For U.S. installation, NFPA standard No. 96 states, “A minimum distance of 18 in. (450

mm) should be maintained between the flue outlet and the lower edge of the grease filter.”

Frymaster recommends that the minimum distance be 24 in. (600 mm) from the flue outlet to the

bottom edge of the filter when the appliance consumes more than 120,000 BTU per hour.

For installations in the United States, information on construction and installation of ventilating

hoods can be found in the NFPA standard cited above. A copy of the standard may be obtained from

the National Fire Protection Association, Battery March Park, Quincy, MA 02269.

DANGER

Do not attach an apron drainboard to a single fryer. The fryer may become unstable,

tip over, and cause injury. The appliance area must be kept free and clear of com-

bustible material at all times.

2-2

NATIONAL CODE REQUIREMENTS

The type of gas for which the fryer is equipped is stamped on the data plate attached to the inside of

the fryer door. Connect a fryer stamped “NAT” only to natural gas, those stamped “PRO” only to

propane gas, and those stamped “MFG” only to manufactured gas.

Installation shall be made with a gas connector that complies with national and local codes, and,

where applicable, CE codes. Quick-disconnect devices, if used, shall likewise comply with national,

local, and, if applicable, CE codes.

ELECTRICAL GROUNDING REQUIREMENTS

All electrically operated appliances must be grounded in accordance with all applicable national and

local codes, and, where applicable, CE codes. A wiring diagram is located on the inside of the fryer

door. Refer to the rating plate on the inside of the fryer door for proper voltages.

DANGER

If this appliance is equipped with a three-prong (grounding) plug, it must be plugged

directly into a properly grounded receptacle.

Do not cut or remove the grounding prong from the plug.

DANGER

This equipment requires electrical power for operation.

Place the gas control valve in the OFF position in case of a prolonged power outage.

Do not attempt to use the equipment during a power outage.

FCC COMPLIANCE

The user is cautioned that any changes or modifications to Frymaster computers not expressly ap-

proved by the party responsible for compliance could void the user’s authority to operate the equip-

ment.

Frymaster computers have been tested and found to comply with the limits for a Class A digital de-

vice, pursuant to Part 15 of the FCC rules. While these devices are verified as Class A devices, they

have been shown to meet the Class B limits. These limits are designed to provide reasonable protec-

tion against harmful interference when the equipment is operated in a commercial environment. This

equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in

accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of the equipment in a residential area is likely to cause harmful interference in which case

the user will be required to correct the interference at his own expense.

If necessary, the user should consult the dealer or an experienced radio and television technician for

additional suggestions.

2-3

The user may find the booklet “How to Identify and Resolve Radio-TV Interference Problems” help-

ful. It is prepared by the Federal Communications Commission and is available from the U.S. Gov-

ernment Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

2.2 Caster/Leg Installation

Depending upon the specific configuration ordered, your fryer may have been shipped without in-

stalled casters or legs. If casters or legs are installed, you may skip this section and proceed to sec-

tion 2.3, Pre-Connection Preparations.

If your fryer requires the installation of casters/legs, install them in accordance with the in-

structions included in your accessory package.

2.3 Pre-Connection Preparations

DANGER

Do not connect fryer to gas supply before completing each step

in this section.

After the fryer has been positioned under the fry station exhaust hood, ensure the following has been

accomplished:

1. Adequate means must be provided to limit the movement of fryers without depending upon the

gas line connections. If a flexible gas hose is used, a restraining cable must be connected at all

times when the fryer is in use. The restraining cable and installation instructions are packed with

the flexible hose in the accessories box that was shipped with your unit.

2. Single unit fryers must be stabilized by installing restraining chains on fryers equipped with

casters or anchor straps on fryers equipped with legs. Follow the instructions shipped with the

casters/legs to properly install the chains or straps.

3. Level the fryer, if necessary, by loosening the locking screw on the caster legs and rotating the

leg to increase or decrease the exposed length. Verify that the fryer is at the proper height in the

exhaust hood. Frymaster recommends that the minimum distance from the flue outlet to the

bottom edge of the hood be 24 in. (600 mm) when the appliance consumes more than 120,000

BTU per hour.

4. Test the fryer electrical system:

a. Plug the fryer electrical cord(s) into a grounded electrical receptacle.

b. Place the power switch in the ON position.

• For fryers equipped with thermostat controls, note the illumination of the power light and

the heat light.

• For fryers having computers, note that the display reads LO-TEMP

LO-TEMPLO-TEMP

LO-TEMP and the heat light

comes on.

• If the store is equipped with a hood interlock system, the hood exhaust fan should be on.

If not, the store hood interlock system is improperly wired and must be corrected.

2-4

c. Place the fryer power switch in the OFF position. Verify that the power and heat lights are

out, or that the display is blank.

5. Refer to the data plate on the inside of the fryer door to determine if the fryer burner is config-

ured for the proper type of gas before connecting the fryer quick-disconnect device or piping

from the gas supply line.

6. Verify the minimum and maximum gas supply pressures for the type of gas to be used in accor-

dance with the accompanying tables.

Orifice Diameter

Single

Vat

Dual

Vat

Single

Vat

Dual

Vat

G20 20 2 x 3.40 2 x 3.40 7 mbar 6.5 mbar

G25 20 or 25 2 x 3.40 2 x 3.40 10 mbar 9 mbar

G30 28/30 or 50 2 x 2.05 2 x 2.05 17 mbar 17 mbar

G31 37 or 50 2 x 2.05 2 x 2.05 20 mbar 18.5 mbar

CE Standard

for Incoming Gas Pressures

for Fryers Manufactured After April 1999

(1) mbar = 10.2 mm H2O

Gas

Pressure

(mbar)(1)

Regulator Pressure

Orifice Diameter

Single

Vat

Dual

Vat

Single

Vat

Dual

Vat

G20 20 2 x 3.40 2 x 3.40 7 mbar 6.5 mbar

G25 20 - 25 2 x 3.40 2 x 3.40 10 mbar 9 mbar

G31 37 - 50 2 x 2.05 2 x 2.05 20.2 mbar 18.5 mbar

CE Standard

for Incoming Gas Pressures

for Fryers Manufactured Through April 1999

(1) mbar = 10.2 mm H2O

Gas

Pressure

(mbar)(1)

Regulator Pressure

Non-CE Standard

for Incoming Gas Pressures

Gas Minimum Maximum

Natural

6" W.C.

1.49 kPa

14.93 mbar

14" W.C.

3.48 kPa

34.84 mbar

11" W.C.

2.74 kPa

27.37 mbar

14" W.C.

3.48 kPa

34.84 mbar

7. For fryers equipped with a FootPrint III system (BIH52 models), plug the electrical cord into a

power receptacle behind the fryer.

2-5

2.4 Connection to Gas Line

The H52 Series has received the CE mark for the countries and gas categories indicated in the

accompanying table. NOTE: The nominal heat input (Qn) is 21kW except for AT, DE, LU, and for

category 3B/P under 50 mbar, which is 23kW.

COUNTRIES CATEGORIES GAS PRESSURE (mbar)

G20 20

G30, G31 50

I2E(R)B G20, G25 20, 25

I3+ G30, G31 28-30, 37

G20 20

G30, G31 30

G20, G25 20, 25

G30, G31 28-30, 37

G20, G25 20, 25

G31 50

G20 20

G30, G31 30

G20, G25 20

G30, G31 50

I3P G31 50

G20 20

G30, G31 28-30, 37

G20 20

G30, G31 28-30, 37

G20 20

G30, G31 28-30, 37

G20 20

G30, G31 50

G25 25

G31 50

G25 25

G30, G31 30

NORWAY (NO) I3B/P G30, G31 30

G20 20

G30, G31 28-30, 37

G20 20

G30, G31 28-30, 37

G20 20

G31 37, 50

G20 20

G30, G31 30

G20 20

G30, G31 28-30, 37

II2ELL3B/P

II2H3B/P

II2Esi3+

II2Esi3P

II2H3B/P

II2E3B/P

II2H3+

II2L3B/P

II2L3P

UNITED KINGDOM (GB) II2H3+

II2H3B/P

II2H3P

NETHERLANDS (NL)

PORTUGAL (PT)

SPAIN (ES)

SWEDEN (SE)

GREECE (GR)

ITALY (IT)

IRELAND (IE)

LUXEMBOURG (LU)

DENMARK (DK)

FRANCE (FR)

FINLAND (FI)

GERMANY (DE)

CE Approved Gas Categories by Country*

AUSTRIA (AT) II2H3B/P

BELGIUM (BE)

* H152-2 units are not approved for G30 (Butane) gas.

The size of the gas line used for installation is very important. If the line is too small, the gas pres-

sure at the burner manifold will be low. This may cause slow recovery and delayed ignition. Fry-

master recommends the incoming gas supply line be a minimum of 1½” (38 mm) in diameter. Refer

to the chart on the following page for the minimum sizes of connection piping.

2-6

Gas Connection Pipe Sizes

(Minimum incoming pipe size should be 1 1/2" (38 mm))

Natural 3/4" (19 mm) 1" (25 mm) 1 1/4" (33 mm)

Propane 1/2" (13 mm) 3/4" (19 mm) 1" (25 mm)

Manufactured 1" (25 mm) 1 1/4" (33 mm) 1 1/2" (38 mm)

Gas Single Unit 2 - 3 Units

4 or more

units*

* For distances of more than 20 feet (6 m) and/or

more than 4 fittings or elbows, increase the con-

nection by one pipe size.

Before connecting new pipe to your unit, the pipe must be thoroughly blown out to remove any for-

eign particles. If these foreign particles get into the burner and controls, they will cause improper

and sometimes dangerous operation.

CE Standard

Required airflow for the combustion air supply is 2m3/h per kW.

1. Connect the quick-disconnect hose to the fryer quick-disconnect fitting under the front of the

fryer and to the building gas line.

NOTE: Some fryers are configured for a rigid connection to the gas supply line. These units are

connected to the gas supply line at the rear of the unit.

When using thread compound, use very small amounts on male threads only. Use a pipe thread

compound that is not affected by the chemical action of LP gases (Loctite™ PST56765 Sealant is

one such compound). DO NOT apply compound to the first two threads. This will ensure that

the burner orifices and control valve do not become clogged.

2. Open the gas supply to the fryer and check all piping, fittings, and gas connections for leaks. A

soap solution should be used for this purpose.

DANGER

Never use matches, candles, or any other ignition source to check for leaks.

If gas odors are detected, shut off the gas supply to the fryer

at the main shut-off valve and contact the local gas company or an authorized

service agency for service.

3. Close the fryer drain valve and fill the frypot with water and boil-out solution to the bottom OIL-

LEVEL line at the rear of the frypot. Light the fryer and perform the boil-out procedures that are

described in the “Lighting Instructions” and “Boiling Out the Frypot” topics found in Chapter 3

of this manual.

2-7

WARNING

“Dry-firing” your unit will cause damage to the frypot. Always ensure that melted

shortening, cooking oil, or water and boil-out solution is in the frypot before firing

your unit for any extended period.

4. It is suggested that the burner manifold pressure be checked at this time by the local gas company

or an authorized service agent. Refer to “Check Burner Manifold Pressure” in Chapter 5 of this

manual for the proper procedure. The accompanying tables list the burner manifold gas pressures

for the various gas types that can be used with this equipment.

Gas

Single

Vat

Dual

Vat

Natural Gas Lacq

(G20) under 20 mbar 77

Natural Gas Groningue *

(G25) under 25 mbar 10 10

Natural Gas Groningue

(G25) under 20 mbar 10 10

Butane

(G30) at 28/30 or 50 mbar 17 17

Propane

(G31) under 37 or 50 mbar 20 20

CE Standard

Burner Manifold Gas Pressures

for Fryers Manufactured After April 1999

Pressure (mbar)

* Belgian G25 = 7,0 mbar (single or dual)

Gas

Single

Vat

Dual

Vat

Natural Gas Lacq

(G20) under 20 mbar 76,5

Natural Gas Gronigue *

(G25) under 25 mbar 10 9

Natural Gas Gronigue

(G25) under 20 mbar 10 9

Butane

(G30) at 28/30 or 50 mbar 17 16,5

Propane

(G31) under 37 or 50 mbar 20,2 18,5

CE Standard

Burner Manifold Gas Pressures

for Fryers Manufactured Through April 1999

Pressure (mbar)

* Belgian G25 = 7,0 mbar (single) or 6,5 (dual)

Gas Pressure

Natural 3" W.C.

0.73 kPa

Propane 8.25" W.C.

2.5 kPa

Non-CE Standard

Burner Manifold Gas Pressures

5. Check the programmed temperature or analog controller thermostat setting. (Refer to Chapter 3,

Operating Instructions, for the setpoint programming instructions for your particular controller.)

2.5 Converting to Another Gas Type

Your fryer is configured at the factory for either natural gas or propane (LP) gas. If you desire to

switch from one type of gas to another, a gas conversion kit must be installed by a Factory

Authorized Service Center technician.

DANGER

Switching to a different type of gas without installing the proper conversion kit may

result in fire or explosion! NEVER attach your fryer to a gas supply for which it is

not configured.

2-8

H52 Series Fryers manufactured for Non-CE countries use different burners for each type gas. The

burners in fryers built for Propane gas have a special gray-colored coating on the burner tiles to en-

able them to withstand the higher caloric value of the Propane gas. Burners designed for use in Pro-

pane units may be used in natural gas applications, but not vice versa.

Non-CE Gas Conversion Kits

Natural Gas to Propane (LP) Gas Propane (LP) Gas to Natural Gas

Full Vat: Part Number 826-1145 Full Vat: Part Number 826-1146

Dual Vat: Part Number 826-1147 Dual Vat: Part Number 826-1148

Units manufactured for export to CE countries are equipped with “universal” burners that may be

used with either natural (G20, G25) gas or Butane (G30) and Propane (G31) gasses.

CE Gas Conversion Kits for Units with Gas Valve 810-1011

G20 or G25 (Natural) to G30 or G31 Gas: G30 or G31 to G20 or G25 (Natural) Gas:

Part Number 826-1196 Part Number 826-1197

CE GAS CONVERSION INSTRUCTIONS

1. Between G20- and G25-type Natural Gas, adjust the gas pressure at the regulator. (Refer to the

CE Standard Burner Manifold Gas Pressure Chart.) Do not change the orifice.

2. Between a 2nd family (G20 or G25) and a 3rd family gas (G30 Butane or G31 Propane):

a. Change the orifices.

b. Change the gas valve spring (units with valve part number 810-1011only)

c. Adjust the manifold pressure.

3. Remove the rating plate and install a new one. Call your local service agency or KES for a new

rating plate.

4. If the destination language changes, replace the labels. Call your local service agency or KES for

a label kit. The language of reference will be on the corner of the label.

2.6 Frypot Boil-Out

Before the fryer is first used for cooking product, it should be boiled out to ensure that any residue

from the manufacturing process has been eliminated.

In addition, after the fryer has been in use for a period of time, a hard film of caramelized vegetable

oil will form on the inside of the frypot. This film should be periodically removed by following the

boil-out procedure.

Refer to Fryers Maintenance Requirement Card (MRC) 14A for the boil-out procedure.

3-1

Inside the Ignition Module

Out to

Gas Valve

To Ala rm

25 V +

GND

Ignition Wire Flame Sensor

Coil

CHAPTER 3: SERVICE PROCEDURES,

TROUBLESHOOTING, AND WIRING DIAGRAMS

3.1 Functional Description

H52 Series fryers contain a welded stainless steel frypot that is directly heated by a high efficiency

infrared burner system requiring approximately 43% less energy than conventional burners to cook

the same volume.

Self-contained combustion chambers (referred to as “burners”) are fitted into rails attached to the

sides of the frypot, one on each side. Each combustion chamber is fitted with special ceramic tiles

that are heated by the burning of a forced air/gas mixture. The tiles transfer their heat to the frypot

by means of infrared radiation, providing much more constant and uniform heat dispersion over the

surface of the frypot than do conventional burners. Because relatively less heat is lost to the atmos-

phere in the process, compared to “open-burner” designs, less fuel is required to achieve and main-

tain a given frypot temperature.

In full-vat units, gas flow to both of the burners is regulated by one electromechanical gas valve. In

dual-vat units, each burner has its own valve. All fryers in this series are equipped with 24VAC gas

valve systems, and all are configured with electronic ignition.

THE ELECTRONIC IGNITION SYSTEM

An ignition module mounted in the component box or

“shield” (located behind the control panel) is connected to

an ignitor assembly at the burner. The ignition module

performs three important functions: it provides an ignition

spark, supplies voltage to the gas valve, and proofs the

burner flame. The module contains a 4-second time delay

circuit and a coil that activates the gas valve. Three designs

are in use. The module used in Australian export units

resembles an interface board. A closed-box design is used

in units built for the U.S. and other export markets. Before

mid-2001, fryers (other than Australian) were equipped

with two 807-1006 modules. Fryers built after mid-2001

late-2000 are equipped with one 807-3365 (dual vat) or one

807-3366 (full vat) module. Fryers built between late-2000

and mid-2001 may have either configuration. Australian

units continue to use two 807-2971 modules.

The ignitor assembly consists of a spark plug, an enrichment tube, and a flame sensor.

At start-up, the power switch is placed in the ON position, supplying approximately 12-volts DC to

the heat control circuitry in the controller or computer and to one side of the heat relay coils on the

interface board. If resistance in the temperature probe indicates the temperature in the frypot is

below 180ºF (82ºC), the current flows through a melt cycle circuit where a timer switch alternately

closes for 6 seconds and opens for 24 seconds. If the temperature is 180ºF (82ºC) or above, the

current flows through a heat circuit, bypassing the timer switch. In either case, ground is supplied to

the other leg of the heat relay coils, which then close electronic switches in the 24VAC circuit to

3-2

provide current to the ignition module. Circuitry in the ignition module sends 24VAC to the gas

valve via a normally closed high-limit switch (and, in BIH52 fryers, a normally closed drain safety

switch). Simultaneously, the module causes the ignitor to spark for 4 seconds to light the burner. A

flame sensor verifies the burner is lit by measuring the flow of microamps through the flame. If the

burner does not light (or is extinguished), current to the ignition module is cut, the gas valve closes,

and the ignition module “locks-out” until the power switch is turned off and then back on.

A probe monitors the temperature in the frypot. When the programmed setpoint temperature is

reached, resistance in the probe causes the heat cycle circuitry in the controller to cut off current flow

through the heat relay. This in turn cuts off the 24VAC to the ignition module, causing the gas valve

to close.

H52 Series fryers may be equipped with solid-state analog controls, M100B computers, or M2000

computers.

All fryers in this series have an interface board located in the component box located behind the

control panel.

INTERFACE BOARDS

The interface board provides a link between the controller/computer and the fryer’s individual com-

ponents without requiring excessive wiring, and allows the controller to execute commands from one

central point. The H52 Series of fryers has been in production since 1983. Consequently, servicers

are likely to encounter several different interface board designs. Although the boards differ in ap-

pearance, basic functioning and electrical connections are the same from one to another. In mid-

2000, a new, unfused, ignition module design was introduced. Consequently, an additional fuse was

added to the design of interface board 806-3398 to compensate. The new, two-fuse board is P/N

106-0386. With the exception of manufactured gas units, no matter what generation board is in the

fryer now, if it becomes necessary to replace the board, either P/N 806-3398 or 106-0386 will be the

replacement part installed. If unit being serviced is equipped with two P/N 807-1006 or 807-2971

ignition modules, either interface board may be used. If the unit is equipped with one P/N 807-3365

or 807-3366 ignition module, interface board 106-0386 should be used. The two boards most likely

to be seen (i.e., the two latest designs) are illustrated below.

K1 K2

SOUND

GND

V2D

PWR

V2S

GND

V1D

PWR

ALR

V1S

GND GV PWR AL 12V AIR 24V AL PWR GV GND

EARLIER DESIGN INTERFACE BOARD P/N 806-3398

GND

12 6 3 45

3 6 9 12

2 5 8 11

1 4 7 10

3 6 9 12

2 5 8 11

1 4 7 10

12963

11852

10741

BLOWER

MOTOR

RELAY

K3 K5

HEAT

RELAY

HEAT

RELAY

SOUND

GND

V2D

PWR

V2S

GND

PWR

12V

AIR

24V

PWR

GND

V1D

PWR

ALR

V1S

GND

LATER DESIGN INTERFACE BOARDS P/N 806-3398 and 106-0386

GND

3 6 9 12

2 5 8 11

1 4 7 10

3 6 9 12

2 5 8 11

1 4 7 10

12963

11852

10741

K2 K3

HEAT

RELAY

AND

BLOWER

MOTOR

RELAY

D6 D7

Blower

Motor

2 Amp

HEAT

RELAY

AND

BLOWER

MOTOR

RELAY

F2 Ignition

2 AMP Module

This Fuse is NOT

present on 806-3398 IFB.

3-3

FREQUENTLY USED TEST POINTS FOR INTERFACE BOARDS 806-3398 AND 106-0386

Meter

Test Setting Pins Results

12VAC Power to Controller 50VAC Scale 1 and 3 on J3 or J2 12-18

24VAC Power to Right Module 50VAC Scale 8 on J3 and GROUND 22-28

24VAC Power to Left Module 50VAC Scale 8 on J1 and GROUND 22-28

120 VAC Power 250VAC Scale 11 on J3 and GROUND 110-125

120 VAC Power to Blowers 250VAC Scale 12 on J3 and GROUND 110-125

24VAC Power to Right High-Limit 50VAC Scale 9 on J3 and GROUND 22-28

24VAC Power to Left High-Limit 50VAC Scale 9 on J1 and GROUND 22-28

Probe Resistance (Right) *R x 1000 OHMS 2 and 6 on J3 or 13 and 14 on J2 **

Probe Resistance (Left) * R x 1000 OHMS 2 and 6 on J1 or 14 and 15 on J2 **

Probe Isolation R x 1000 OHMS 6 on J1 or J3 and GROUND ***

High-Limit Continuity (Right) R x 1 OHM 9 on J3 and Wire 13C on Gas Valve 0

High-Limit Continuity (Left) R x 1 OHM 9 on J1 and Wire 12C on Gas Valve 0

** Disconnect 15-pin harness from controller before testing probe circuit.

** See Probe Resistance Chart at end of chapter.

*** 5 mega-Ohms or greater.

These standard interface boards are also used in a number of fryer types besides the H52 Series. The

information contained in this section applies to H52 Series applications ONLY.

The earlier design 806-3398 board contains two heat relays (K1 and K2) that switch 24VAC to the

ignition and gas valve circuits when the computer/controller heat logic circuit calls for heat. Relay

K4 switches 120VAC to the blower motor when either K1 or K2 closes. The relays on this board are

soldered on – if one fails, the whole board must be replaced.

The newer design 806-3398 and 106-0386 boards have only two relays. In this design, K2 and K3

are double-pole-double throw (dpdt) relays that supply 24VAC to the ignition and gas valve circuits,

as well as 120VAC to the blower motor. The relays on this board plug into sockets. If a relay fails,

that relay can be replaced.

All three interface boards have LEDs to assist in troubleshooting. On the earlier design 806-3398

board, nine LEDs are arranged along the bottom. Later versions of the 806-3398 board, and the 106-

0386 board have seven LEDs placed at various locations. The tables below identify the LEDs and

their meaning.

12V Indicates 12 VAC from transformer

24V Indicates 24 VAC from transformer

GV Indicates 24 VAC to gas valve (left or right)

PWR Indicates 24 VAC to module (left or right)

AL Indicates module lock-out (left or right)

AIR CE and Japanese units only: air switch closed

EARLIER DESIGN INTERFACE BOARD

LED DIAGNOSTIC LIGHTS 124 VAC to left gas valve (dual vat only)

224 VAC to left ignition module

324 VAC from transformer

424 VAC to right ignition module

524 VAC to gas valve (right valve if dual vat)

612 VAC from transformer

7CE and Japanese units only: air switch closed

LATER DESIGN INTERFACE BOARD

LED DIAGNOSTIC LIGHTS

3-4

CURRENT FLOW THROUGH

INTERFACE BOARDS 806-3398 AND 106-0386

(H52 APPLICATION)

J2 PIN 1

LEFT VAT FULL OR RIGHT VAT

INTERFACE BOARD

12 VAC TO CPTR J3 PIN 1

GROUND GROUND

COMPUTER (12 VAC) J3 PIN 3

COMPUTER RT HT RELAY

COMPUTER LT HT RELAY

NOT USED NOT USED

RT ALARM OUT

** ALR (RIGHT)

COMPUTER SOUND DEVICE

LT ALARM OUT

*AD (LEFT)

COMPUTER J3 PIN 6

COMPUTER

COMPUTER J1 PIN 6

J1 PIN 2 & J3 PIN 2

NOT USED NOT USED

NOT USEDNOT USED

NOT USED NOT USED

TEMP PROBE J2 PIN 15

NOT USED

24 VAC IN

NOT USED

MAIN GAS VALVE

NOT USED NOT USED

12 VAC XFMR

J2 PIN 14 TEMP PROBE

J2 PIN 3 12 VAC XFMR

NOT USED NOT USED

J2 PIN 13 TEMP PROBE

NOT USED NOT USED

24 VAC IN

MAIN GAS VALVE

NOT USED NOT USED

120 VAC IN

BLOWER XFMR BOX

COMPUTER 12 VDC TO RELAYS

NOT USEDNOT USED

PWR via LT HT RELAY

V2D

NOT USED NOT USED

BLOWER via K4 (old)

or K2/K3 (new)

PWR via RT HT RELAY

V1S OR V1D

J2 PIN 5 HOOD RELAY

J2 PIN 14TEMP PROBE

V2D

PWR

V2S

GND

V1D

PWR

ALR

V1S

GND

MOD 25V GROUND GROUND

MOD V2D

MOD 25V TERM

DRAIN SWITCH (OPT) J2 PIN 12

NOT USED NOT USED

GROUND MOD 25V GROUND

J3 PIN 9 MOD V1D *

MOD 25V TERM

J3 PIN 8 via RT HT RELAY

DRAIN SWITCH (OPT)

J2 PIN 10

MOD V1S **

via HLS via HLS

J3 PIN 9

J1 PIN 9

J1 PIN 8 via LT HT RELAY

NOT USED NOT USED

** Dual Vat configurations

** Full Vat configurations

3-5

THERMOSTATS

All fryers in the H52 Series have temperature probes located on the front centerline of each the fry-

pot. (Dual vat frypots have a probe in each vat.) In this type thermostat, the probe resistance varies

directly with the temperature. That is, as the temperature rises, so does resistance, at a rate of ap-

proximately 2 ohms for every 1º F. Circuitry in the controller monitors the probe resistance and

controls burner firing when the resistance exceeds or falls below programmed temperatures (set-

points). The temperatures are programmed by means of a keypad or knob on the face of the control-

ler.

H52 Series fryers are also equipped with a high-limit thermostat. In the event that the fryer fails to

properly control the oil temperature, the high-limit thermostat prevents the fryer from overheating to

the flash point. The high-limit thermostat acts as a normally closed power switch that opens when

exposed to temperatures above 425ºF to 450ºF (218ºC to 232ºC). The different types of thermostats

have different part numbers for CE and Non-CE configured models, and are not interchangeable.

3.2 Accessing Fryers for Servicing

DANGER

Moving a fryer filled with cooking oil/shortening may cause spilling or splattering of

the hot liquid. Follow the draining instructions in Chapter 4 of this manual before

attempting to relocate a fryer for servicing.

1. Shut off the gas supply to the unit. Unplug the power cords. Disconnect the unit from the gas

supply.

2. Remove any attached restraining devices.

3. Relocate the fryer for service accessibility.

4. After servicing is complete, reconnect the unit to the gas supply, reattach restraining devices, and

plug in the electrical cords.

3.3 Cleaning the Gas Valve Vent Tube

NOTE: This procedure is not required for fryers configured for export to CE

countries.

1. Set the fryer power switch and the gas valve to the OFF position.

2. Carefully unscrew the vent tube from the gas valve. NOTE: The vent tube may be

straightened for ease in removal.

3. Pass a piece of ordinary binding wire (.052 inch diameter) through the tube to remove any

obstruction.

3-6

4. Remove the wire and blow through the tube to ensure it is clear.

5. Reinstall the tube and bend it so that the opening is pointing downward.

3.4 Checking the Burner Manifold Gas Pressure

DANGER

Frymaster recommends that ONLY qualified service personnel perform this task.

1. On non-CE fryers, ensure that the gas valve knob is in the OFF position.

Honeywell

OFF

2. Remove the pressure tap plug from the gas valve assembly.

Typical Non-CE

Valve Assembly

Typical CE Valve

Assembly

Pressure Tap Plug

2. Insert the fitting for a gas pressure-measuring device into the pressure tap hole.

3. On non-CE fryers only, place the gas valve in the ON position.

4. Place the fryer power switch in the ON position. When the burner has lit and burned steadily for

at least one minute, compare the gas pressure reading to the pressure for the corresponding gas in

the appropriate table found on the following page.

3-7

Gas

Single

Vat

Dual

Vat

Natural Gas Lacq

(G20) at 20 m bar 77

Natural Gas Gronique *

(G25) at 25 m bar 10 10

Natural Gas Gronique

(G25) at 20 m bar 10 10

Butane/Propane

(G30) at 28/30 or 50 m bar 17 17

Propane

(G31) at 37 or 50 m bar 20 20

CE Standard

B u rn er M anifold G as P ressu res

for Fryers M anufactured After April 1999

Pressure (m bar)

* Belgian G 25 = 7.0 m b ar (single o r dual)

Gas

Single

Vat

Dual

Vat

Natural Gas Lacq

(G20) under 20 mbar 76.5

Natural Gas Gronique *

(G25) under 25 mbar 10 9

Natural Gas Gronique

(G25) under 20 mbar 10 9

Propane

(G31) under 37 or 50 mbar 20.2 18.5

CE Standard

Burner M anifold Gas Pressures

for Fryers Manufactured Through April 1999

Pressure (m bar)

* Belgian G25 = 7.0 m bar (single) or 6.5 (dual)

G as Pressure

Natural 3" W .C.

0.73 kPa

LP 8.25" W .C.

2.5 kPa

Non-CE Standard

Burner M anifold G as Pressures

3-8

5. To adjust the burner gas pressure, remove the cap from the gas valve regulator and adjust to the

correct pressure.

Non-CE

Valve Earlier Model CE Valve Later Model

CE Valve

GAS VALVE REGULATOR CAP

6. Place the fryer power switch (and the gas valve in non-CE fryers) in the OFF position. Remove

the fitting from the pressure tap hole and reinstall the pressure tap plug.

3.5 Measuring Flame Current

When the burner flame is properly adjusted, it will produce a current between 2.5 µA and 3.5 µA.

Flame current is measured by placing a microamp (not milliamp) meter in series with the sensing

wire on the ignitor. This is accomplished as follows:

1. Place the fryer power switch in the OFF position.

2. Disconnect the white sensing wire from one of the burner ignitors and connect it to the positive

lead of the meter. Connect the negative lead of the meter to the terminal from which the sensing

wire was removed.

3. Place the fryer power switch in the ON position to light the burners. After the frypot temperature

reaches 200°F (93°C), wait at least one minute before checking the reading. NOTE: The closer

the unit is to normal operating temperature, the more accurate the reading will be.

3.6 Replacing Fryer Components

3.6.1 Replacing the Controller or the Controller Wiring Harness

1. Disconnect the fryer from the electrical supply.

2. Remove the two screws in the upper corners of the control panel and swing the panel open from

the top, allowing it to rest on its hinge tabs.

3. Disconnect the wiring harness from the back of the controller and, if replacing the harness, dis-

connect it from the interface board.

4. Disconnect the ground wire from the controller, and remove the controller by lifting it from the

hinge slots in the control panel frame.

3-9

5. Reverse the procedure to install a new controller or wiring harness.

3.6.2 Replacing the Temperature Probe or High-Limit Thermostat

1. Disconnect the fryer from the electrical supply.

2. Drain cooking oil below the level of the probe or thermostat.

3. Remove the screws from the upper corners of the control panel and swing the panel open from

the top, allowing it to rest on its hinge tabs.

4. Unplug the controller wiring harness from the back of the controller.

5. Disconnect the ground wire from the controller, and remove the controller by lifting it from the

hinge slots in the control panel frame.

6. Remove the screws securing the topcap to the fryer and lift the topcap up and off the fryer.

7. Disconnect the ignition cables from the ignitors by grasping the boots and gently pulling toward

you.

8. Remove the screws securing the control panel frame in place and remove the frame.

9. Remove the component box mounting screws and rotate the top of the component box out of the

cabinet. Carefully pull it out far enough to disconnect the wiring harness plug(s) from the back

of the box. Remove the box and set it aside.

10. On CE fryers with a blower shield assembly installed, remove the screws securing the shield in

place and remove it from the cabinet.

11. Make a note of the location of the existing wires. Using a pin-pusher, disconnect the temperature

probe wires (or high-limit thermostat wires) from the connector plug.

12. Unscrew and remove the temperature probe (or high limit thermostat) from the frypot.

13. Apply Loctite® PST56765 pipe thread sealant or equivalent to the replacement part threads.

14. Screw the replacement part into the frypot.

15. Connect the wires from the new component to the connector plug, referring to the note made in

step 11.

16. Reverse steps 1 through 10 to complete the procedure.

3-10

3.6.3 Replacing the Interface Board

1. Remove the component box per steps 1 through 9 of Section 3.6.2.

2. Unplug the controller wiring harness from the interface board.

3. Disconnect the wires attached to the interface board, marking or making a note of the wires and

terminals to facilitate reconnection.

4. Remove the nuts at each corner of the interface board and pull it from the studs.

5. Reverse the procedure to install the replacement board, being sure to reinstall the spacers behind

the interface board.

3.6.4 Replacing an Ignition Module

1. Disconnect the fryer from the electrical supply.

2. Remove the screws from the upper corners of the control panel and swing the panel open from

the top, allowing it to rest on its hinge tabs.

3. Disconnect the wires from the ignition module, marking or making a note of the wires and termi-

nals to facilitate reconnection.

4. Remove the four ignition module screws and pull the module from the component box.

5. Reverse the procedure to install the replacement module.

3.6.5 Replacing an Ignitor Assembly

DANGER

Drain the frypot or remove the handle from the drain valve before proceeding further.

1. Disconnect the fryer from the electrical supply.

2. Disconnect the ignition cable from the ignitor by grasping the boot and gently pulling toward

you.

3. Remove the two sheet metal screws securing the ignitor to the mounting plate and pull the ignitor

from the fryer.

4. Reverse the procedure to install the replacement ignitor.

3-11

3.6.6 Cleaning or Replacing a Combustion Air Blower

A sheet metal shield or shield assembly prevents inadvertent access to the blower assembly. The

specific design varies depending upon the particular configuration of the fryer and the country for

which manufactured, but in all cases, the shield is attached to the cabinet framing by sheet metal

screws. Remove the screws that secure the shield or shield assembly to the cabinet framing and pull

the shield out of the fryer to expose the combustion air blower assembly.

1. Disconnect the blower wiring harness and remove the blower assembly mounting nuts.

2. Remove the three fasteners that secure the blower motor assembly to the blower housing, and

separate the two components.

Remove these fasteners.

(On black-colored FASCO

blowers there are three

nuts. On silver-colored

KOOLTRONICS blowers

there are three screws.)

Wiring connection

Blower

assembly

mounting

nuts

3-12

3. Wrap the motor with plastic wrap to prevent water from entering it. Spray degreaser or detergent

on the blower wheel and the blower housing. Allow it to soak for five minutes. Rinse the wheel

and housing with hot tap water, then dry with a clean cloth.

Wrap the motor and

wires with plastic wrap

or a plastic bag.

BLOWER HOUSING BLOWER WHEEL

4. Remove the plastic wrap from the blower motor assembly. Reassemble the blower motor

assembly and blower housing. Reinstall the blower assembly in the fryer.

5. Reinstall the blower shield or shield assembly.

6. Light the fryer in accordance with the procedure described in Chapter 3, Section 3.1.

7. After the burners have been lit for at least 90 seconds, observe the flames through the burner

viewing ports located on each side of the combustion air blower.

The air/gas mixture is properly adjusted when the burner manifold pressure is in accordance with the

applicable table on page 3-7 and the burners display a bright orange-red glow. If a blue flame is ob-

served, or if there are dark spots on a burner face, the air/gas mixture requires adjustment.

Right

Viewing

Port

Left Viewing

Port is Behind

Motor

(NOTE: Blower

shield omitted

for clarity.)

3-13

Adjusting Air/Gas Mixture

Non-CE Units and CE Units Built After April 1999

On the side of the blower housing opposite the motor is a plate with one or two locking nuts. Loosen

the nut(s) enough to allow the plate to be moved, then adjust the position of the plate to open or close

the air intake opening until a bright orange-red glow is obtained. Carefully hold the plate in position

and tighten the locking nut(s).

TYPICAL NON-CE BLOWER ASSEMBLY TYPICAL CE BLOWER ASSEMBLY

ON UNITS BUILT AFTER APRIL 1999

Adjusting Air/Gas Mixture

CE Units Built Through April 1999

CE units built through April 1999 are equipped with a shield assembly in front of the blowers. An

air shutter plate on the face of the shield assembly regulates the amount of airflow to the blower in-

take. To adjust the shutter plate, loosen the locking screws and slide the shutter to the left or right as

necessary to obtain a bright orange-red glow. Carefully hold the shutter plate in position and tighten

the locking screws.

TYPICAL CE BLOWER SHIELD ASSEMBLY

ON UNITS BUILT THROUGH APRIL 1999

3-14

3.6.7 Replacing a Gas Valve

DANGER

Drain the frypot or remove the handle from the drain valve before proceeding further.

1. Disconnect fryer from electrical and gas supplies.

2. Disconnect the wires from the gas valve terminal block, marking each wire to facilitate recon-

nection.

3. Remove the vent tube and the enrichment tube fitting from the valve.

4. Disconnect the flexible gas line(s).

5. Carefully unscrew the valve from the manifold. NOTE: Some models may have the valve at-

tached to the manifold by means of a pipe union. In such cases, remove the valve by uncoupling

the union.

6. Remove all fittings from the old gas valve and install them on the replacement valve, using Loc-

tite® PST56765 or equivalent pipe thread sealant.

7. Apply Loctite® PST 56765 or equivalent pipe thread sealant to the threads of the manifold (or the

union). Reverse steps 1-5 to install the replacement gas valve.

3.6.8 Replacing a Burner Assembly

DANGER

Drain the frypot or remove the handle from the drain valve before proceeding further.

1. Disconnect the unit from the electrical and gas supplies.

2. Remove the combustion air blower per the procedure found in Section 3.6.6.

3. Remove the four nuts from the air plenum assembly and pull the assembly straight out toward

you until it clears the burner tubes.

NOTE: On a dual vat fryer, it will be necessary to remove the drain valve handles before the

plenum can be removed.

4. Disconnect the ignition cables from the ignitors by grasping their boots and pulling toward you.

5. Disconnect the gas lines and enrichment tubes from the burner orifices and ignitor assemblies.

6. Remove the four ¼” (6mm) nuts securing the outer front covers to the frypot assembly.

7. Remove the sheet metal screws at the top of the outer front covers and pull the covers straight out

toward you until clear of the mounting studs.

3-15

8. Remove the washers and tubular spacers from the mounting studs, then pull the inner covers

straight out toward you until clear of the mounting studs.

9. Grasp the burner firmly and pull it toward you until it clears the burner channels, taking care not

to damage the ceramic tiles in the process.

10. Clean all debris from the burner channels and combustion area.

11. Inspect the upper and lower burner rails for cracked or burned-out welds.

a. If the welds in the lower rail are cracked or burned out, the frypot must be replaced. Refer to

Section 3.6.9 for procedure.

b. If the welds in the upper rail are cracked or burned out, the upper rail must be replaced. Re-

fer to Section 3.6.10 for procedure.

12. Place a new insulating strip along the top, rear, and bottom edge of the burner and carefully slide

it straight into the rails.

NOTE: Use P/N 826-0931 for full vat frypots and P/N 826-0932 for dual vat frypots.

13. Reverse steps 1 through 9 to reassemble the components.

14. Fill the frypot with oil. Turn the fryer on, turn off or bypass the melt cycle, and operate the unit

for at least 10 minutes.

15. Visually examine the burner flame. The color and intensity on both sides should be the same.

16. Use an inspection mirror to check for leaks in areas that cannot be directly observed.

17. If a leak is detected, tighten all the lower insulation retainer nuts, allow the frypot to run for five

additional minutes, and repeat steps 15 and 16.

18. If the leak persists, use a rubber hammer and a small block of wood to tap the corners of the

lower combustion chamber insulation retainers. Repeat steps 15 through 17. Repeat this step

until no leakage is detected.

3.6.9 Replacing the Frypot

1. Drain cooking oil/shortening from the frypot.

2. Remove all accessories, e.g., frypot covers, basket lift arms, etc. from the fryer.

4. Disconnect the fryer from gas and electrical supplies.

5. Remove the screws from the topcap above the control panel and lift it up and off the fryer(s).

3-16

6. Remove the screws from the upper left and right corners of the control panel. Open the panel,

disconnect the controller wiring harness and ground wire. Remove the controller from the fryer.

7. Disconnect the ignition wires from the ignitor plugs by grasping their boots and pulling toward

you.

8. Remove the screws securing the component box to the frame, and then rotate the top of the box

forward and out of the fryer enough to disconnect the wiring harness connector plug(s) on the

rear of the box. Set the component box aside.

9. Using a pin pusher, remove the temperature probe and high-limit thermostat wires from the

plug(s), marking each wire to facilitate re-assembly.

10. On BIH52 units, remove the cover from the safety drain switch, disconnect the wires from the

switch, and pull them out of the switch box.

11. On BIH52 units, remove the section(s) of square drain from the drain valve(s) of the frypot to be

removed.

12. Disconnect the gas lines and enrichment tubes from the burner orifices and ignitor assemblies.

13. Remove the frypot hold down bracket.

14. Remove the screws from the flue cap sides and back and lift it clear of the fryer(s).

15. On BIH52 units, disconnect the oil return line(s) from the frypot to be removed.

16. Carefully lift the frypot from the fryer cabinet.

17. Remove the drain valve(s), temperature probe(s), high-limit thermostat(s), and ignitor assem-

blies. Inspect each of these components carefully and install them in the replacement frypot if

they are in serviceable condition. Use Loctite® PST56765 sealant or equivalent on component

threads.

NOTE: Some servicers, based upon their experience, recommend that probes and thermostats be

replaced whenever a frypot is replaced, but this remains the customer’s decision.

18. Reverse steps 1-16 to reassemble fryer.

19. Perform steps 14 through 18 of Section 3.6.8 to ensure that there are no leaks in the burner insu-

lation.

CAUTION

Before installing the temperature probe, high-limit thermostat, and drain valve on the

replacement frypot, clean their threads and apply Loctite® PST56765 thread sealant

or equivalent.

3-17

3.6.10 Replacing Frypot Insulation and/or Upper Burner Rails

NOTE: Replacing the burner rails requires completely tearing down the frypot and installing new

frypot insulation. Refer to the frypot exploded view on page 3-18 for component identification.

1. Remove the frypot per Section 3.6.9.

2. Remove the burner assemblies (1).

3. Remove insulation retainers and blanket insulation (2).

4. Remove the upper oil zone insulation bracket and upper oil zone insulation (3).

5. Remove the plenum (4).

6. Remove the front lower combustion chamber insulation retainer and insulation (5), and the front

lower combustion chamber inner insulation retainer and insulation (6).

NOTE: Full vat units have two-piece insulation retainer and insulation components. Dual vat

units have one-piece components.

7. Remove the upper combustion chamber insulation retainer and insulation (7).

8. Remove the inner upper combustion chamber insulation retainer and insulation (8).

9. Remove the rear lower combustion chamber retainers, back, and insulation (9).

NOTE: Full vat units have two-piece backs and four retainers. Dual vat units have one-piece

backs and two retainers.

10. Remove the flue assembly (10).

11. Remove the upper burner rails (11).

NOTE: For the following steps, refer to the frypot exploded view on page 3-19 for component

identification.

12. Remove any residual insulation, sealant, and/or oil from the exterior of the frypot.

13. Place the “L” shaped pieces of combustion chamber insulation (1) in the front and rear corners of

both upper rail-retaining slots.

14. Use a small amount of furnace or muffler repair cement to seal the gaps at each end of both lower

rails. (See inset, page 3-19.)

3-18

Disassembling A Frypot

(Full Vat Illustrated)

Spacers

Spacer

3-19

Re-assembling A Frypot

(Full Vat Illustrated)

Apply cement

here

15. Install the upper burner rails (2) with the heat deflectors slanting toward the rear of the frypot.

The rails will cover the “L” shaped pieces of combustion chamber insulation previously installed.

3-20

16. Place the upper inner combustion chamber insulation and insulation retainers (3) on the top two

studs on each side of the front of the frypot and secure with ¼-20 washer-nuts. (It is normal for

the retainers to slice off the overhanging insulation.)

17. Place the lower rear combustion chamber insulation (4) on the lower four studs at the rear of the

frypot.

18. Place one 1.625-inch tubular spacer (5) on each of the flue assembly (upper) studs at the rear of

the frypot.

NOTE: There are three different sizes of spacers. Verify the size to ensure the correct spacers

are installed.

19. Press the flue assembly (6) over the burner rails. It may be necessary to use a rubber mallet or

screwdriver to align the components. Use four ¼-20 washer nuts to secure the flue assembly.

Do not tighten the retainer nuts at this point. They should be finger-tight only.

NOTE: The flue edge will cover one to two inches of the lower insulation.

20. Install the lower rear combustion chamber back(s) and retainer(s) (7) with the flanged edge(s)

against the flue. Secure with ¼-20 washer nuts.

NOTE: Full vat units have two-piece backs and four retainers. Dual vat units come with one-

piece backs and only two retainers.

21. Insert the burners (9) into the rails to ensure the rail spacing and alignment are correct. The

burner should slide freely into and out of the rails. The upper rail can be bent slightly to increase

or decrease tension on the burner, and the edges of the slot can be closed or opened slightly to

best fit the burner frame.

22. Carefully wrap a strip of burner insulation (8) tightly around the rear and sides of the burner

frame (9), with the glass-tape side of the strip on the outside. Do not use duct tape or adhesive

to secure the strip to the burner frame.

23. Align the burner to the burner rails while maintaining tension on the insulation strip. Insert the

burner at a slight angle and begin pushing the burner slowly into the rails until it contacts the rear

combustion chamber. The fit should be snug, but not excessively tight.

24. Verify that the burners are flush with the front edge of the burner rails. Remove the excess

burner insulation by cutting with a knife or diagonal pliers. Do not try to tear the insulation!

25. Insert the upper front insulation (10) into its retainer (11), making sure that the holes in each

piece are aligned with one another. Install the assembly with the insulation side toward the fry-

pot and secure with ¼-20 washer-nuts. Do not over tighten.

26. Place a washer on each of the four lower studs on the front of the frypot. Install the lower inner

front insulation (12) with the rectangular openings toward the drain valve nipple. Install the

lower inner front insulation retainer(s) (13).

3-21

NOTE: Full vat units have a two-piece insulation retainer. Dual vat units have a one-piece re-

tainer.

27. If necessary, replace the sight-glasses and insulation (14).

28. Place one washer and one 1.888-inch spacer (15) on each stud.

NOTE: There are three different sizes of spacers. Verify the size to ensure the correct spacers

are installed.

29. Insert the front lower insulation (16) into the front lower insulation retainer(s) (17) and install

assembly on frypot. Secure with ¼-20 washer-nuts. If frypot uses two retainers, connect them

together with two ¼” self-tapping screws.

NOTE: Full vat units have a two-piece insulation retainer and two pieces of insulation. Dual

vat units have one-piece components.

30. Return to the rear of the frypot and fully tighten all washer-nuts.

31. Remove and replace the plenum gaskets (18).

32. Place a 0.938-inch spacer (19) on the plenum-mounting studs, and mount the plenum (20). En-

sure the gaskets are clear of the burner tubes by pulling the plenum back slightly. Place a washer

on each stud and secure plenum with ¼-20 locknuts.

33. Install the upper oil-zone insulation (21) by pressing it under the upper combustion chamber

metalwork. Secure the insulation with the bracket (22) and ¼” self-tapping screws.

34. Install the upper burner rail blanket insulation (23). Position any excess insulation toward the top

of the frypot. Avoid overhang past the bottom of the upper burner rail. Overhang in this area

will make future burner replacement more difficult.

35. Cover the insulation with the insulation retainer (24), and secure with ¼” self-tapping screws.

36. Reinstall probes, drain valves, high-limit thermostats and other pipefittings using Loctite®

PST56765 sealant or equivalent on their threads.

3.7 Troubleshooting and Problem Isolation

Because it is not feasible to attempt to include in this manual every conceivable problem or trouble

condition that might be encountered, this section is intended to provide technicians with a general

knowledge of the broad problem categories associated with this equipment, and the probable causes

of each. With this knowledge, the technician should be able to isolate and correct any problem en-

countered.

Problems you are likely to encounter can be grouped into six broad categories:

1. Ignition failures

2. Improper burner functioning

3-22

3. Improper temperature control

4. Computer-related problems

5. Filtration problems

6. Leakage problems

The probable causes of each category are discussed in the following sections. A series of Trouble-

shooting Guides (decision trees) is also included at the end of the chapter to assist in identifying

some of the more common problems.

3.7.1 Ignition Failures

Ignition failure occurs when the ignition module fails to sense a flame within the 4-second time delay

period and locks out. When this happens, the module sends 24VAC through the interface board

alarm circuit to the controller/computer.

Analog controllers indicate ignition failure by illuminating the heat light and trouble light simultane-

ously. M100B and M2000 computers flash “ignition failure” in the display window on the

side that failed (in full-vat units, it will flash in the right window only).

The three primary reasons for ignition failure, listed in order of probability, are:

1. Problems related to the gas and/or electrical power supplies

2. Problems related to the electronic circuits

3. Problems related to the gas valve.

PROBLEMS RELATED TO THE GAS AND/OR ELECTRICAL POWER SUPPLIES

The main indicators of this are that an entire battery of fryers fails to light and/or there are no indi-

cator lights illuminated on the fryer experiencing ignition failure. Verify that the quick disconnect

fitting is properly connected, the fryer is plugged in, the main gas supply valve is open, and the cir-

cuit breaker for the fryer electrical supply is not tripped.

PROBLEMS RELATED TO THE ELECTRONIC CIRCUITS

If gas and electrical power are being supplied to the fryer, the next most likely cause of ignition fail-

ure is a problem in the 24VAC circuit. If the fryer is equipped with a built-in filtration system

(BIH52 models), first verify that the drain valve is fully closed. (The valve is attached to a mi-

croswitch that must be closed for power to reach the gas valve. Often, although the valve handle ap-

pears to be in the closed position, the microswitch is still open.) If the valve is fully closed, or the

fryer does not have a built-in filtration system, refer to the troubleshooting guides TROUBLE-

SHOOTING THE 24VAC CIRCUIT.

Some typical causes of ignition failure in this category include a defective sensing wire in the ignitor

assembly, a defective module, a defective ignition wire, and a defective ignitor.

Occasionally you may encounter an ignition failure situation in which all components appear to be

serviceable and the microamp reading is within specification, but the unit nevertheless goes into

ignition failure during operation. The probable cause in this case is an intermittent failure of an

ignition module. When the unit is opened up for troubleshooting, the module cools down enough to

3-23

operate correctly, but when the unit is again closed up and placed back into service the module heats

up and fails.

PROBLEMS RELATED TO THE GAS VALVE

If the problem is not in the 24VAC circuit, it is most likely in the gas valve itself, but before replac-

ing the gas valve refer to TROUBLE SHOOTING THE GAS VALVE.

3.7.2 Improper Burner Functioning

With problems in this category, the burner ignites but exhibits abnormal characteristics such as

“popping,” dark spots on the burner ceramics, fluctuating flame intensity, and flames shooting out of

the flue.

“Popping” indicates delayed ignition. In this condition, the main gas valve is opening but the burner

is not immediately lighting. When ignition does take place, the excess gas “explodes” into flame,

rather than smoothly igniting.

The primary causes of popping are:

• Incorrect or fluctuating gas pressure

• A defective or incorrectly adjusted combustion air blower

• Inadequate make-up air

• Heat damage to the controller or ignition module

• A cracked ignitor or broken ignition wire

• A defective ignition module

• Cracked burner tile (this typically causes a very loud pop).

If popping occurs only during peak operating hours, the problem may be incorrect or fluctuating gas

pressure. Verify that the incoming gas pressure (pressure to the gas valve) is in accordance with the

appropriate CE or Non-CE Standard found in Section 2.3 of this manual, and that the pressure re-

mains constant throughout all hours of usage. Refer to page 2-6 for the procedure for checking the

pressure of gas supplied to the burner.

If popping is consistent during all hours of operation, the most likely cause is an insufficient air sup-

ply. Check for “negative pressure” conditions in the kitchen area. If air is flowing into the kitchen

area, this indicates that more air is being exhausted than is being replenished and the burners may be

starved for air.

If the fryer’s gas and air supplies are okay, the problem is most likely with one of the electrical com-

ponents. Examine the ignition module and controller for signs of melting/distortion and/or discol-

oration due to excessive heat build-up in the fryer. (This condition usually indicates improper flue

performance.) A melted or distorted ignition module is automatically suspect and should be re-

placed, but unless the condition causing excessive heat is corrected, the problem is likely to recur.

Verify that the ignition wire is tightly connected at both ends and free of obvious signs of damage.

Again, if damage is due to excessive heat in the fryer, that problem must also be corrected.

3-24

Check for proper operation by disconnecting the wire from the ignitor (spark plug), inserting the tip

of a screw driver into the terminal, and holding it near the frame of the fryer as the power switch is

placed in the ON position. A strong, blue spark should be generated for at least 4 seconds.

DANGER

MAKE SURE YOU ARE HOLDING THE INSULATED HANDLE OF THE SCREWDRIVER

AND NOT THE BLADE. THE SPARKING CHARGE IS APPROXIMATELY 25,000

VOLTS.

Examine the ignitor (spark plug) for any signs of cracking. A cracked ignitor must be replaced.

If all other causes have been ruled out, examine the burner tiles for any signs of cracking. If found,

the burner must be replaced.

Fluctuating flame intensity is normally caused by either improper or fluctuating incoming gas pres-

sure, but may also be the result of variations in the kitchen atmosphere. Verify incoming gas pres-

sure in the same way as for “popping,” discussed in the preceding paragraphs. Variations in the

kitchen atmosphere are usually caused by air conditioning and/or ventilation units starting and stop-

ping during the day. As they start and stop, the pressure in the kitchen may change from positive or

neutral to negative, or vice versa. They may also cause changes in airflow patterns that may affect

flame intensity.

Dark spots on the burner tiles are the result of an improper air/gas mixture. Adjust the combustion

air blower to reduce the amount of air in the mixture to correct this problem.

Flames shooting out of the flue are usually an indication of negative pressure in the kitchen. Air is

being sucked out of the burner enclosure and the flames are literally following the air. If negative

pressure is not the cause, check for high burner manifold gas pressure in accordance with the proce-

dures on page 2-6.

An excessively noisy burner, especially with flames visible above the flue opening, may indicate

that the gas pressure is too high, or it may be that, on non-CE units, the gas valve vent tube is

blocked. If the incoming gas pressure is correct and the vent tube on non-CE units is unobstructed,

the gas valve regulator is probably defective.

Occasionally a burner may apparently be operating correctly, but nevertheless the fryer has a slow

recovery rate (the length of time required for the fryer to increase the oil temperature from 270ºF to

320ºF (133ºC to 160ºC)). The primary causes of this are an over-filled vat, a dirty or out-of-

adjustment combustion air blower, low burner manifold pressure, and/or damaged burner tiles.

Adding oil to the frypot during the recovery process will also cause a slow recovery rate. If these

causes are ruled out, the probable cause is a misadjusted gas valve regulator. Refer to page 2-6 for

the procedure for checking the pressure of gas supplied to the burner.

3.7.3 Improper Temperature Control

Temperature control, including the melt cycle, is a function of several interrelated components, each

of which must operate correctly. The principle component is the temperature probe. Other compo-

nents include the interface board, the controller itself, and the ignition module.

3-25

Improper temperature control problems can be categorized into melt cycle problems and failure to

control at setpoint problems.

MELT CYCLE PROBLEMS

The melt cycle is automatically initiated by the controller (Analog, M100B, or M2000) when the

controller is first turned on. The unit should remain in the melt cycle until the oil in the frypot

reaches 180ºF (82ºC). (Do not confuse the melt cycle with the LOW TEMP warning. This warning will

be displayed when the M100B or M2000 computer senses that the oil in the frypot is more than 45ºF

(25ºC) below the setpoint.)

Problems may be with the controller itself, the temperature probe, or a malfunctioning heat relay on

the interface board.

FAILURE TO CONTROL AT SETPOINT

Problems in this category may be with the temperature probe, the interface board, or the controller.

3.7.4 Recovery Time or “Rate Of Rise” and the M100B “Rec Lock” Condition

Recovery time or “rate of rise” is a method of measuring a fryer’s performance. Put simply, it is the

time required for the cooking oil temperature to rise from 270ºF to 320ºF (133ºC to 160ºC). This

range is used as a standard since ambient kitchen temperatures can effect the test if lower ranges are

used.

The M100B computer performs the recovery test when the fryer is first turned on and anytime there-

after when the temperature of the oil drops below 250ºF (121ºC), such as when cold cooking oil is

added to the frypot. If the fryer takes longer than 2 minutes and 35 seconds to recover, the display

will show REC LOCK and the computer will lock out.

The currently recorded recovery time can be viewed anytime the temperature of the cooking oil is

above 270ºF (133ºC) by pressing the recovery time recall switch .

If REC LOCK occurs three or more times within a week, verify that oil is not being added when the

fryer is heating (that is, while a heat mode indicator is illuminated). If oil is not being added while

the fryer is heating, there is a problem with the fryer.

To clear the REC LOCK

REC LOCKREC LOCK

REC LOCK condition, turn the computer off by pressing the right switch. Enter the

programming mode by pressing and releasing the left 1, 2, and switches simultaneously. The

computer will display its model number and then FR FRIES YES. Press the switch. The computer

will display LOCK CLEARED.

3.7.5 Filtration Problems

BIH52 units are equipped with FootPrint III built-in filtration systems. The majority of filtration

problems arise from operator error. One of the most common errors is placing the filter paper on the

bottom of the filter pan rather than over the filter screen.

3-26

Whenever the complaint is “the pump is running, but no oil is being filtered,” check the installation

of the filter paper, including that the correct size is being used. While you are checking the filter pa-

per, verify that the O-ring on the bottom of the filter pan is present and in good condition. A missing

or worn O-ring will allow the pump to suck air and decrease its efficiency.

If the pump motor overheats, its thermal overload will trip and the motor will not start until it is re-

set. If the pump motor does not start, press the red reset switch located on the rear of the motor. If

the pump then starts, something caused the motor to overheat. It may just be that several frypots

were being filtered one after the other and the pump got hot. Letting the pump cool down for at least

a half-hour is all that is required in this case. More often, the pump overheated for one of the fol-

lowing reasons:

• Shortening was solidified in the pan or filter lines.

• The operator attempted to filter oil or shortening that was not heated. Cold oil and shortening

are thicker and cause the pump motor to work harder and overheat.

If the motor hums but the pump does not rotate, there is a blockage in the pump. Incorrectly sized or

installed paper will allow food particles and sediment to pass through the filter pan and into the

pump. When sediment enters the pump, the gears can bind up causing the motor to overload, again

tripping the thermal overload. Solidified shortening in the pump will also cause it to seize, with the

same result.

A pump seized by debris or hard shortening can usually be freed by manually moving the gears with

a screwdriver or other instrument as illustrated below. Make sure power to the pump motor is off

before trying this.

1. Disconnect power to the filter system.

2. Remove the input plumbing from the pump.

3. Use a screwdriver to manually turn the gears.

• Turning the pump gears backwards will release a hard particle and allow its removal.

• Turning the pump gears forward will push softer objects and solid shortening through the

pump and allow free movement of the gears.

Sediment Particle

Oil Flow

Up for reverse

Down for forward

Sediment Particle

3-27

Improperly sized or installed paper will also allow food particles and sediment to pass through and

clog the suction tube on the bottom of the filter carriage. Particles large enough to block the suction

tube may indicate that the crumb tray is not being used.

Pan blockage can also occur if shortening is left in the pan and allowed to solidify. The heater strip

on the suction tube is designed to prevent solidification of residual shortening left in the tube. It will

not melt or prevent solidification of shortening in the pan.

Blockage removal can be accomplished by forcing the item out with an auger or drain snake.

NEVER use compressed air or other pressurized gases to force out the blockage.

The electronics of the FootPrint III system are simple and straightforward. Microswitches, attached

to handles for each vat and wired in parallel, provide the 24VAC required to activate the pump relay

coil when the handles are moved to the ON position. The activated pump relay coil pulls in the

pump motor switch, supplying power to the pump motor.

Pump Relay

Coil

Micro-

switches

Pump Motor Switch

Pump Motor

Solenoids

(Redesigned

Models Only)

24VAC

Line VAC

FootPrint III Simplified Wiring Diagram

All Heater Tapes (Original and Redesigned Models)

(Heater Tapes have been removed from

oil return lines in Redesigned Models)

For FootPrint III systems built before August 1997, all heater tapes are wired directly into the line

VAC source. They remain energized as long as the unit is plugged in. In systems built in August

1997 and later, oil return line heater tapes have been eliminated. In these units, the only heater tape

used is on the suction tube and pump. This tape is still wired directly into the line voltage. A pair of

vacuum-breaking solenoids is wired into the 24VAC circuit.

The redesigned FP III is distinguished from original-design units by the absence of casters on the

filter base assembly. The redesign incorporated an improved oil return system that allows

oil/shortening to drain back to the filter pan when the filter system is turned off, eliminating the need

for most heated oil return components.

3-28

Operation of the redesigned FP-III system is the same as for the original design.

ORIGINAL VS REDESIGNED FP-III FILTRATION SYSTEM

Original System Redesigned System

Return lines and manifolds wrapped with silicone

strip heaters and aluminum tape.

No heater strips or aluminum tape on return lines.

Filter base assembly connected to unit with a

black, heated return hose beneath the filter.

Non-heated Teflon hose with a swivel joint con-

nects the filter base assembly to the unit above

the filter.

Filter base assembly equipped with swivel cast-

ers.

Filter base assembly has no casters.

Operator-removable filter base assembly. (Filter

base assembly stoplocks in cabinet can be ro-

tated to remove tray.)

Filter base assembly is not removable except by

a qualified service technician. (Filter base as-

sembly stoplocks fitted with a screw and nut to

prevent filter removal.)

Oil/shortening remains in return lines when filter

system is turned off.

Oil/shortening gravity-drains back to the filter pan

when filter system is turned off, leaving no oil or

shortening in return lines.

Square Drain Sub-System

The only change to the square drain sub-system is the addition of a ¼” NPT vent coupling to the

leftmost end sections to allow attachment to a vacuum-breaking solenoid. The new end sections may

also be used on the original-design filtration system by plugging the vent port with a ¼” NPT pipe

plug coated with sealant. All other square drain components remain unchanged.

Rear-Flush Sub-System

A one-piece, welded rear manifold and Dormont stainless steel flexlines replace the various pieces of

½” NPT piping, flexlines, and heater-strips used on the original-design filtration system. A solenoid

vent valve is attached at the left end of the oil return manifold mounted at the rear of the leftmost two

frypots. It prevents vacuum-lock of the system as oil/shortening drains back to the filter pan when

the unit is turned off. The solenoid valve is connected to the square drain sub-system by a clear ⅜”

O.D. Teflon tube and threaded fittings. The Gemini ball valve used on the manifold is the same as

that used on the earlier design. Eight and one-half-inch stainless steel Dormont flexlines replace the

flexlines that connect the manifolds to the valves. Standard ½” X ½” X 90º black metal street el-

bows are used to make the connections.

Filter Base Assembly and Pump Sub-System

Casters are not present on the new-design filter base. In addition, the filter base assembly has been

redesigned to prevent it being taken out of the cabinet without removing a set of machine screws and

nuts. The filter pan is unchanged and is completely removable.

A new Teflon hose with a braided stainless steel covering connects the pump to the rear manifold

and replaces the heated hose running from the pump discharge under the unit to the Power Shower

plumbing. The new hose is fitted with a 90º swivel at the manifold end and a straight swivel at the

pump end to prevent kinking.

The pump plumbing has been changed by the addition of a solenoid valve at the pump discharge, a

¼” I.D. Dormont stainless steel flexline that connects the solenoid valve to the pump inlet fittings,

and miscellaneous standard black metal fittings for connections. This design allows oil/shortening to

bypass the pump as it drains from the oil return lines back into the filter pan when the system is

3-29

turned off. Bypassing the pump expedites draining of the lines. The pump solenoid leads are con-

nected to Pins 7 and 9 of the upper 9-pin plug assembly.

Filter Wiring Box

The original-design 5-lead cable connecting the filter assembly to the filter wiring box has been re-

placed with a new, universal 7-lead cable to accommodate the solenoid mounted on the front mani-

fold. The two new leads have a separate connector for attachment to the solenoid. When a filter ca-

ble is ordered for either filtration system configuration (original or redesigned), the new 7-wire cable

will be sent. The two extra wires and connector will not interfere with the original filtration system

or its operation.

Verifying Solenoid Operation

Proper operation of the 24VAC manifold and pump solenoids can be verified by removing the pump

motor lead from terminal 4 of the pump motor relay in the filter wiring box and then activating the

oil return lever. Proper solenoid operation will be evidenced by an audible “click” or vibration of

both the pump solenoid and the manifold solenoid.

3.7.6 Leakage Problems

Leakage of the frypot will usually be due to improperly sealed high limit thermostats, temperature

probes, and drain fittings. When installed or replaced, each of these components must be sealed with

Loctite® PST56765 sealant or equivalent to prevent leakage. In very rare cases, a leak may develop

along one of the welded edges of the frypot. When this occurs, the frypot must be replaced.

If the sides and/or ends of the frypot are coated with oil/shortening, the most likely cause is spillage

over the top of the frypot rather than leakage.

The clamps, which hold the drain tube sections together, may loosen over time as the tubes expand

and contract with heating and cooling during use. If the section of drain tube connected to the drain

valve is removed for whatever reason, make sure that its o-ring is in good condition and properly

fitted around the nipple of the drain section when it is reinstalled. Also, check to insure that the

drain tube runs downward from the drain along its whole length and has no low points where oil or

shortening may accumulate.

3.8 Troubleshooting Guides

The troubleshooting guides found in the pages that follow are intended to assist service technicians

in quickly isolating the probable causes of equipment malfunctions by following a logical, step-by-

step process.

3-30

3.8.1 Troubleshooting the 24VAC Circuit

UNIT IS CONNECTED

TO POWER SUPPLY,

DRAIN VALVE IS FULLY

CLOSED, CONTROLLER

IS ON AND CALLING

FOR HEAT (heat mode

indicator is illuminated).

NOTE: All voltage measurements must

be made within 4 seconds of unit calling

for heat. If unit does not fire within 4

seconds, ignition modules will lock out

and the computer must be turned off

then back on to reset.

Is 24VAC

present on interface

board J3 pin 9 (LED 5 (GV)) and,

on dual vat units, J1 pin 9

(LED 1 (GV))?

Is 24VAC

present across gas valve main

coil (PV terminal) (on both valves

if dual vat)?

Yes

24V circuit is OK.

Problem may be

with gas valve.

Yes

Probable causes are an open high-limit

or a failed wire between the interface

board and the gas valve. On units with

built-in filtration, cause may also be a

failed drain safety switch.

Check continuity of high-limit

and continuity of drain safety

switch. If both are zero,

problem is in wiring.

Is LED 3 (24V)

lit continuously?

Probable causes are a failed

24V transformer or failed

wiring between transformer and

interface board.

Is 24VAC

present on the right PWR

terminal (LED 4) (and left PWR

terminal (LED 2), if

dual vat)?

Yes

Probable cause

is a failed interface

board.

Is 24VAC

present on V1S (or

V1D and V2D, if

dual vat)?

Yes

Probable cause is a

failed interface board.

Yes

If ignition module fuse

is good, probable causes are a

failed ignition module or a failed

interface board. Replace suspect

ignition module with one known

to be good to isolate cause.

3-31

LEFT VAT

LED 3 (24V)

IGNITION

MODULE

LED2 (PWR)

PWR

V2D

HIGH

LIMIT

SWITCH

LED1 (GV)

GAS

VALVE

IGNITION

MODULE

PWR

V1S (FV) OR V1D (DV)

HIGH

LIMIT

SWITCH

GAS

VALVE

24V

TRANSFORMER

LED 5 (GV)

J1 PIN 9 J3 PIN 9

FULL OR RIGHT VAT

J3 PIN 8J1 PIN 8

24 VOLT CIRCUIT

With Interface Board 806-3398 or 106-0386 and

Two 807-1006 (FV/DV), 807-2971 (FV/DV), or 807-3365 (DV) Ignition Modules

LED 4 (PWR)

High Voltage

to Ignitor

High Voltage

to Ignitor

FV = Full Vat

DV = Dual Vat

DRAIN

SAFETY

SWITCH

DRAIN

SAFETY

SWITCH

This switch used only with

built-in filtration systems.

Flame Sensor Flame Sensor

3-32

24 VOLT CIRCUIT

With Interface Board 806-3398 or 106-0386 and

One 807-3366 (FV) Ignition Module

NOTE: Some units may

be wired in this manner.

IGNITION

MODULE

V1S

PWR (left side)

V2S

LED 5 (GV)

J3 PIN 9

Jumper

LED 3 (24V)

24V

TRANSFORMER

IGNITION

MODULE

PWR (right side)

V1D

LED 5 (GV)

J3 PIN 9

J3 PIN 8

LED 4 (PWR)

HIGH

LIMIT

SWITCH

GAS

VALVE

DRAIN

SAFETY

SWITCH

This switch used only with

built-in filtration systems.

High Voltage

to Left Ignitor

High Voltage

to Right Ignitor

Left Flame

Sensor

Right Flame

Sensor

3-33

3.8.2 Troubleshooting the Gas Valve

CONTROLLER

IS CALLING

FOR HEAT.

For non-CE units, verify

gas valve is in ON

position.

Is 24VAC

present across gas

valve main coil?

Is incoming

gas pressure in

accordance with tables in

Section 2.3

of this manual?

Yes

Is outgoing

gas pressure in

accordance with tables on

page 3-7

of this manual?

Yes

Gas valve is OK>

Yes

Probable cause is misadjusted

or failed gas valve. Adjust gas valve in

accordance with Section 3.4 of this

manual. If valve cannot be

adjusted, replace valve.

Problem is with

gas supply to fryer.

Problem is with 24VAC Circuit.

Refer to "Troubleshooting the

24VAC Circuit" on page 3-30.

3-34

3.8.3 Troubleshooting the Temperature Probe

While it is still in the

frypot, inspect probe

body for damage.

Remove and replace if

bent, dented or cracked.

Inspect leads for fraying,

burning, breaks, and/or

kinks. If found, replace

probe.

Determine temperature of

cooking oil/shortening using

a thermometer or pyrometer

placed at tip of probe.

Is resistance through

J3 pins 2 and 6 (J1 pins 2 and 6 for

left side of dual vat) approximately equal to

that given in Probe Resistance Chart for

the corresponding temperature?

Measure resistance through

each of the previously tested

pins to ground.

Yes

Is resistance

5 megaohms or greater in

each pin?

Probe has failed.No

Problem is not

with probe. Yes

3-35

Probe Resistance Chart

For use with H52 Series fryers manufactured with Minco Thermistor probes only.

FOHMSC FOHMSC FOHMSC FOHMSC FOHMSC

32 1000 0 83 1107 28 134 1214 57 185 1320 85 236 1424 113

33 1002 1 84 1110 29 135 1216 57 186 1322 86 237 1426 114

34 1004 1 85 1112 29 136 1218 58 187 1324 86 238 1428 114

35 1006 2 86 1114 30 137 1220 58 188 1326 87 239 1430 115

36 1008 2 87 1116 31 138 1222 59 189 1328 87 240 1432 116

37 1011 3 88 1118 31 139 1224 59 190 1330 88 241 1434 116

38 1013 3 89 1120 32 140 1226 60 191 1332 88 242 1436 117

39 1015 4 90 1122 32 141 1229 61 192 1334 89 243 1438 117

40 1017 4 91 1124 33 142 1231 61 193 1336 89 244 1440 118

41 1019 5 92 1126 33 143 1233 62 194 1338 90 245 1442 118

42 1021 6 93 1128 34 144 1235 62 195 1340 91 246 1444 119

43 1023 6 94 1131 34 145 1237 63 196 1342 91 247 1447 119

44 1025 7 95 1133 35 146 1239 63 197 1344 92 248 1449 120

45 1027 7 96 1135 36 147 1241 64 198 1346 92 249 1451 121

46 1030 8 97 1137 36 148 1243 64 199 1348 93 250 1453 121

47 1032 8 98 1139 37 149 1245 65 200 1350 93 251 1455 122

48 1034 9 99 1141 37 150 1247 66 201 1352 94 252 1457 122

49 1036 9 100 1143 38 151 1249 66 202 1354 94 253 1459 123

50 1038 10 101 1145 38 152 1251 67 203 1357 95 254 1461 123

51 1040 11 102 1147 39 153 1253 67 204 1359 96 255 1463 124

52 1042 11 103 1149 39 154 1255 68 205 1361 96 256 1465 124

53 1044 12 104 1151 40 155 1258 68 206 1363 97 257 1467 125

54 1046 12 105 1154 41 156 1260 69 207 1365 97 258 1469 126

55 1049 13 106 1156 41 157 1262 69 208 1367 98 259 1471 126

56 1051 13 107 1158 42 158 1264 70 209 1369 98 260 1473 127

57 1053 14 108 1160 42 159 1266 71 210 1371 99 261 1475 127

58 1055 14 109 1162 43 160 1268 71 211 1373 99 262 1477 128

59 1057 15 110 1164 43 161 1270 72 212 1375 100 263 1479 128

60 1059 16 111 1166 44 162 1272 72 213 1377 101 264 1481 129

61 1061 16 112 1168 44 163 1274 73 214 1379 101 265 1483 129

62 1063 17 113 1170 45 164 1276 73 215 1381 102 266 1485 130

63 1065 17 114 1172 46 165 1278 74 216 1383 102 267 1487 131

64 1068 18 115 1174 46 166 1280 74 217 1385 103 268 1489 131

65 1070 18 116 1176 47 167 1282 75 218 1387 103 269 1491 132

66 1072 19 117 1179 47 168 1284 76 219 1389 104 270 1493 132

67 1074 19 118 1181 48 169 1287 76 220 1391 104 271 1495 133

68 1076 20 119 1183 48 170 1289 77 221 1393 105 272 1497 133

69 1078 21 120 1185 49 171 1291 77 222 1395 106 273 1499 134

70 1080 21 121 1187 49 172 1293 78 223 1398 106 274 1501 134

71 1082 22 122 1189 50 173 1295 78 224 1400 107 275 1503 135

72 1084 22 123 1191 51 174 1297 79 225 1402 107 276 1505 136

73 1086 23 124 1193 51 175 1299 79 226 1404 108 277 1507 136

74 1089 23 125 1195 52 176 1301 80 227 1406 108 278 1509 137

75 1091 24 126 1197 52 177 1303 81 228 1408 109 279 1512 137

76 1093 24 127 1199 53 178 1305 81 229 1410 109 280 1514 138

77 1095 25 128 1201 53 179 1307 82 230 1412 110 281 1516 138

78 1097 26 129 1722 54 180 1309 82 231 1414 111 282 1518 139

79 1099 26 130 1204 54 181 1311 83 232 1416 111 283 1520 139

80 1101 27 131 1206 55 182 1313 83 233 1418 112 284 1522 140

81 1103 27 132 1208 56 183 1315 84 234 1420 112 285 1524 141

82 1105 28 133 1210 56 184 1317 84 235 1422 113 286 1526 141

3-36

Probe Resistance Chart (Continued)

For use with H52 Series fryers manufactured with Minco Thermistor probes only.

FOHMSC FOHMSC FOHMSC FOHMSC FOHMSC

287 1528 142 338 1630 170 389 1732 198 440 1833 227 491 1932 255

288 1530 142 339 1632 171 390 1734 199 441 1835 227 492 1934 256

289 1532 143 340 1634 171 391 1736 199 442 1837 228 493 1936 256

290 1534 143 341 1636 172 392 1738 200 443 1839 228 494 1938 257

291 1536 144 342 1638 172 393 1740 201 444 1841 229 495 1940 257

292 1538 144 343 1640 173 394 1742 201 445 1843 229 496 1942 258

293 1540 145 344 1642 173 395 1744 202 446 1845 230 497 1944 258

294 1542 146 345 1644 174 396 1746 202 447 1846 231 498 1946 259

295 1544 146 346 1646 174 397 1748 203 448 1848 231 499 1948 259

296 1546 147 347 1648 175 398 1750 203 449 1850 232 500 1950 260

297 1548 147 348 1650 176 399 1752 204 450 1852 232 501 1952 261

298 1550 148 349 1652 176 400 1754 204 451 1854 233 502 1954 261

299 1552 148 350 1654 177 401 1756 205 452 1856 233 503 1956 262

300 1554 149 351 1656 177 402 1758 206 453 1858 234 504 1958 262

301 1556 149 352 1658 178 403 1760 206 454 1860 234 505 1960 263

302 1558 150 353 1660 178 404 1762 207 455 1862 235 506 1962 263

303 1560 151 354 1662 179 405 1764 207 456 1864 236 507 1964 264

304 1562 151 355 1664 179 406 1766 208 457 1866 236 508 1965 264

305 1564 152 356 1666 180 407 1768 208 458 1868 237 509 1967 265

306 1566 152 357 1668 181 408 1770 209 459 1870 237 510 1969 266

307 1568 153 358 1670 181 409 1772 209 460 1872 238 511 1971 266

308 1570 153 359 1672 182 410 1774 210 461 1874 238 512 1973 267

309 1572 154 360 1674 182 411 1776 211 462 1876 239 513 1975 267

310 1574 154 361 1676 183 412 1778 211 463 1878 239 514 1977 268

311 1576 155 362 1678 183 413 1780 212 464 1880 240 515 1979 268

312 1578 156 363 1680 184 414 1781 212 465 1882 241 516 1981 269

313 1580 156 364 1682 184 415 1783 213 466 1884 241 517 1983 269

314 1582 157 365 1684 185 416 1785 213 467 1886 242 518 1985 270

315 1584 157 366 1686 186 417 1787 214 468 1888 242 519 1987 271

316 1586 158 367 1688 186 418 1789 214 469 1890 243 520 1989 271

317 1588 158 368 1690 187 419 1791 215 470 1892 243 521 1991 272

318 1590 159 369 1692 187 420 1793 216 471 1893 244 522 1993 272

319 1592 159 370 1694 188 421 1795 216 472 1895 244 523 1995 273

320 1594 160 371 1696 188 422 1797 217 473 1897 245 524 1996 273

321 1596 161 372 1698 189 423 1799 217 474 1899 246 525 1998 274

322 1598 161 373 1700 189 424 1801 218 475 1901 246 526 2000 274

323 1600 162 374 1702 190 425 1803 218 476 1903 247 527 2002 275

324 1602 162 375 1704 191 426 1805 219 477 1905 247 528 2004 276

325 1604 163 376 1706 191 427 1807 219 478 1907 248 529 2006 276

326 1606 163 377 1708 192 428 1809 220 479 1909 248 530 2008 277

327 1608 164 378 1710 192 429 1811 221 480 1911 249 531 2010 277

328 1610 164 379 1712 193 430 1813 221 481 1913 249 532 2012 278

329 1612 165 380 1714 193 431 1815 222 482 1915 250 533 2014 278

330 1614 166 381 1716 194 432 1817 222 483 1917 251 534 2016 279

331 1616 166 382 1718 194 433 1819 223 484 1919 251 535 2018 279

332 1618 167 383 1720 195 434 1821 223 485 1921 252 536 2020 280

333 1620 167 384 1722 196 435 1823 224 486 1923 252 537 2022 281

334 1622 168 385 1724 196 436 1825 224 487 1925 253 538 2025 281

335 1624 168 386 1726 197 437 1827 225 488 1927 253 539 2027 282

336 1626 169 387 1728 197 438 1829 226 489 1929 254 540 2029 282

337 1628 169 388 1730 198 439 1831 226 490 1931 254 541 2031 283

3-37

3.9 Simplified Wiring Diagrams

HEAT

RELAY

BLOWER

RELAY

AIR

OPTIONAL

AIR

SWITCH

BLOWER

HI-LIMIT

12V 24V

TEMP

PROBE

24V

LED 3 LED 5

R-GV

R HEAT

LED 4

PWR

V1S

ALARM

LED 6

12V

L HEAT

LED 2

PWR

ALARM

V2S

POWER

ON/OFF

TROUBLE

HEAT

621291185431

RIGHT IGNITION

MODULE

25V+

ALARM

VALVE

GND

BNR

GND

RIGHT

IGNITOR

LEFT IGNITION

MODULE

25V+

ALARM

VALVE

GND

LEFT

IGNITOR

LINE VOLTAGE

GND

BNR

DRAIN SAFETY

SWITCH

H52 SERIES — FULL-VAT — JUNE 1996 - JULY 1999

(TWO RELAYS: K2 (HEAT) & K4 (BLOWER) AND TWO IGNITION MODULES)

1/50

47K

DRAIN SAFETY SWITCH

ONLY ON BIH52 MODELS

AIR SWITCH

ONLY ON CE AND

SOME EXPORT UNITS

3-38

HEAT &

BLOWER

RELAY

OPTIONAL

AIR

SWITCH

BLOWER

LIMI

V24V

TEM

PROB

24V

LED 3 LED 5

R-GV

R HEAT

LED 4

PWR

V1S

ALARM

LED 6

L HEAT

LED 2

PWR

ALARM

POWER

ON/OFF

TROUBLE

HEAT

621291185431

RIGHT IGNITION

MODULE

ALARM

VALV

GND

BNR

GND

RIGHT

IGNITOR

LEFT IGNITION

MODULE

25V+

ALARM

VALVE

GND

LEFT

IGNITOR

LINE

VOLTAGE

GND

BNR

DRAIN SAFETY

SWITCH

H52 SERIES— FULL-VAT— BEFORE JUNE 1996 & AFTER JULY 1999

(ONE DUAL FUNCTION HEAT/BLOWER RELAY (K3) AND TWO IGNITION MODULES)

1/50

47K

F1 Fuse not

present on

fryers

manufactured

before 6/96

DRAIN SAFETY SWITCH

ONLY ON BIH52 MODELS

AIR SWITCH

ONLY ON CE AND SOME

EXPORT UNITS

AIR LED not

present on fryers

manufactured

before 6/96 25V+

AIR

3-39

H52 SERIES— FULL-VAT WITH ONE DUAL-SPARK IGNITION MODULE

(ONE DUAL FUNCTION HEAT/BLOWER RELAY (K3))

DRAIN SAFETY SWITCH

ONLY ON BIH52 MODELS

AIR SWITCH

ONLY ON CE AND SOME

EXPORT UNITS

LINE VOLTAGE

HEAT &

BLOWER

RELAY

AIR

OPTIONAL

AIR

SWITCH

BLOWER

LIMIT

12V 24V TEMP

PROBE

24V

LED 3 LED 5

R-GV

R HEAT

LED 4

PWR

V1D

ALARM

LED 6

12V

L HEAT

LED 2

PWR

ALARM

V2S

POWER

ON/OFF

TROUBLE

HEAT

621291185431

DUAL-SPARK

IGNITION

MODULE

ALARM

VALVE

GND

BNR

GND

RIGHT

IGNITOR

DRAIN SAFETY

SWITCH

1/50

47K

25V+

LEFT

IGNITOR

NOTE: SOME UNITS

MANUFACTURED AFTER

AUGUST 2000 ARE

EQUIPPED WITH ONE

DUAL-SPARK IGNITION

MODULE. OTHERS MAY

BE EQUIPPED WITH TWO

SINGLE-SPARK IGNITION

MODULES.

3-40

GND

ALARM

25V+

RIGHT

IGNITOR

VALVE

TEMP

PROBE

BLOWER

24V

DRAIN

SAFETY

SWITCH

HIGH

LIMIT

OPTIONAL

AIR SWITCH

6J3

1148

R HEAT

LED 4

K2 HEAT

RELAY

BLOWER

RELAY

R-GV

LED 5 R

PWR

V1D

ALARM

351041314 11J2

351041314 11

TROUBLE

POWER

HEAT

BNR

GND

AIR

24V

LED 3

RIGHT IGNITION

MODULE

BNR

GND

ALARM

25V+

LEFT

IGNITOR

VALVE

TEMP

PROBE

12V

HIGH

LIMIT

LINE

VOLTAGE

31598462J1

L-HEAT

LED 2

HEAT

RELAY

12V

LED 6

L-GV

LED 1

PWR

V2D

ALARM

POWER

ON/OFF

TROUBLE

LEFT IGNITION

MODULE

12 2

ON/OFF

47K

1/50

47K

1/50

DRAIN

SAFETY

SWITCH

H52 SERIES — DUAL-VAT — JUNE 1996 - JULY 1999

(THREE RELAYS: K1 & K2 (HEAT) AND K4 (BLOWER))

DRAIN SAFETY SWITCH

ONLY ON BIH52

MODELS

AIR SWITCH

ONLY ON CE AND

SOME EXPORT UNITS

HV HV

3-41

GND

ALARM

25V+

RIGHT

IGNITOR

VALVE

TEMP

PROBE

BLOWER

24V

HI-LIMIT

OPTIONAL

AIR SWITCH

6J3

1148

R-HEAT

LED 4

HEAT

RELAY

R-GV

LED 5

PWR

V1D

ALARM

351041314 11J2

351041314 11

TROUBLE

POWER

HEAT

BNR

GND

AIR

24V

LED 3

RIGHT IGNITION

MODULE

BNR

GND

ALARM

25V+

LEFT

IGNITOR

VALVE

TEMP

PROBE

12V

HI- LIMIT

LINE

VOLTAGE

31598462J1

L-HEAT

LED 2

HEAT

RELAY

12V

LED 6

L-GV

LED 1

PWR

V2D

ALARM

POWER

ON/OFF

TROUBLE

LEFT IGNITION

MODULE

12 2

ON/OFF

47K

1/50

47K

1/50

DRAIN

SAFETY

SWITCH

F1 Fuse not

applicable to

fryers

manufactured

before 6/96

AIR LED not

present on fryers

manufactured

before 6/96

H52 SERIES — DUAL-VAT — BEFORE JUNE 1996 & AFTER JULY 1999

(TWO DUAL-FUNCTION HEAT/BLOWER RELAYS (K1 & K2) AND TWO IGNITION MODULES)

DRAIN SAFETY SWITCH

ONLY ON BIH52 MODELS

AIR SWITCH

ONLY ON CE AND SOME

EXPORT UNITS

DRAIN

SAFETY

SWITCH

3-42

3.10 Principal Wiring Connections

LEFT PWR VIA K1

GAS VALVE

FROM TO

LEFT VAT

PROBE J2 PIN 14

PROBE J2 PIN 15

C1 PIN 4 (24VAC)

V2D

GROUND GROUND

MODULE VALVE 1 J1 PIN 9

J1 PIN 8 VIA K1 MODULE 25V

DRAIN SWITCH (BIH52 ONLY) J2 PIN 12

GND

V2D

PWR

V2S

RIGHT OR FULL VAT

J2 PIN 1C1 PIN 6 (12VAC)

C1 PIN 4 (24VAC)

V1S OR V1D

GROUNDGROUND

J3 PIN 9MODULE VALVE 1 (DUAL VAT)

J3 PIN 8 VIA K2 MODULE 25V

DRAIN SWITCH (BIH52 ONLY) J2 PIN 10

GND

V1D

PWR

ALR

V1S

J2 PIN 14PROBE

C1 PIN 5 (12VAC) J2 PIN 3

J2 PIN 5 C1 PIN 7

PROBE J2 PIN 13

RIGHT PWR VIA K2

GAS VALVE

C1 PIN 1 (L1) BLOWER VIA K4

C5 PIN 2K4

MODULE VALVE 1 (FULL VAT) J3 PIN 9

FROM TO

J3 PIN 1 CONTROLLER (12VAC)

GROUND

J3 PIN 3 CONTROLLER (12VAC)

GROUND

RIGHT HEAT RELAY (K2)

RELAYS (12VDC) & J3 PIN 5

CONTROLLER

LEFT HEAT RELAY (K1)CONTROLLER

K5CONTROLLER

K3CONTROLLER

RIGHT ALARM OUT (FULL VAT)ALR (RIGHT)

SOUND DEVICECONTROLLER

LEFT ALARM OUT (DUAL VAT)AD (LEFT)

J3 PIN 6 CONTROLLER

CONTROLLERJ1 PIN 2 & J3 PIN 2

J1 PIN 6 CONTROLLER

FROM TO

TO T1 & J3 PIN 11

TO J1 PIN 8 & J3 PIN 8

TO J3 PIN 1

TO J3 PIN 3

TO GROUND

TO T2 & C5 PIN 2

TO J3 PIN 5 (12VDC)

LINE VOLTAGE (COM)

LINE VOLTAGE (L1)

GROUND

24VAC

12VAC

LINE VOLTAGE (COM)

FROM TRANSFORMER BOX

N.C.

N.O.

COM

AIR SWITCH

(CE AND SOME

EXPORT UNITS)

FILTER PAN SUCTION TUBE HEATER

(BIH52 UNITS ONLY)

(IN COMPONENT BOX)

C2 PIN 1

C2 PINS 3 & 12

LINE VOLTAGE (L1)

LINE VOLTAGE (COM)

HOOD RELAY

WHITE/BLACK (CE = BROWN)

BLUE

ORANGE

WHITE

GREEN

BLACK

GROUND

LINE VOLTAGE L1

GROUND, JUMPERED TO PIN 11

JUMPERED FROM PIN 4

JUMPERED TO PIN 7

JUMPERED TO PIN 6

FROM T2, JUMPERED TO PIN 9

FROM T1, JUMPERED TO PIN 8

LINE VOLTAGE COM TO FILTER BOX (BIH52 ONLY)

TO OIL RETURN SWITCHES OF ADJACENT FRYERS

JUMPERED FROM PIN 3

JUMPERED FROM PIN 5

JUMPERED FROM PIN 1

TO OIL RETURN SWITCHES OF ADJACENT FRYERS

OIL RETURN HEATER

(BIH52 UNITS ONLY)

56C

ORANGE

BLUE

OIL RETURN MANIFOLD SOLENOID VALVE

(BIH52 UNITS ONLY)

OIL RETURN SWITCH

(BIH52 UNITS ONLY)

FILTER BOX

PUMP RELAY

ORANGE

BLUE

WHITE

GREEN

BLACK

RED

WHITE & BLACK

TO J1 PIN 10

JUMPERED FROM PIN 2

FROM T2

TO J1 PIN 7

TO J3 PIN 10

TO J3 PIN 7

BLACK

GREEN

WHITE

RED

ORANGE

BLUE

NOT USED ON H52 FRYERS

J3 PIN 12

LINE VOLTAGE (COM)

BLOWER

(CE)

OIL RETURN

JUMPER TO PIN 4

JUMPER TO PIN 5

PINS 1, 2 & 3

SAME AS NON-CE

CE CONFIGURATION

RED

3-43

3.11 Main Wiring Diagrams

ONLY

EXPORT

PUMP

LEFT

TEMP

PROBE

RIGHT

VALVE

GAS

RIGHT SAFETY

DRAIN SWITCH

51C

42C

12C

LIMIT

HIGH

GRN

GND

BURNER

25V

GND

7101 4

LEFT IGNITOR

MODULE

IGNITION

LEFT

25V

ALARM

VALVE

82C

25V

GND

25V

BURNER

VALVE

ALARM

137101 4

TO J2

CNO

BLK

WHT

24V TRANS

LOAD

LINE

LOAD

LINE

27C

YLW

BLK

RED

26C

PRP

BLU

BLK/YLW

PUMP

FILTER

43C

8050926E

22C

BLOWER SWITCH

IGNITION

MODULE

RIGHT

82C

12V TRANS

RELAY

LOAD

18C

16C

21C

28C

BLOWER

17C

102C

23C

16C

PROBE

TEMP

18C

14C

39C

38C 40C

LINE

24V TRANS

10C

23C

105C

SOUND DEVICE

SOUND

1J2

28C

11C

25C

OIL

RETURN

SWITCH

54C

48C

HEATER

915

4128

OIL RETURN

21C

EXTENSION

TRANSFORMER REAR

DRAIN SWITCH

36C

LEFT SAFETY

51C

GND

LED 5

PWR

V1D

V1S

ALM

RELAY

R-GV

K3 HEAT

RIGHT

HEAT

LED 4

FULL POT ONLY

COMPUTER OR CONTROLLER

81C

1114 13

HEAT

RELAY

MELT SWITCH

12V

24V

LED 3

L-GV

LED 1

LEFT HEAT

LED 2

K1 HEAT

RELAY

HIGH

LIMIT

GND

V2D

ALMD

PWR

ALMS

RELAY

SWITCH

ON/OFF

TROUBLE

V2S

32 1

10C

INTERFACE BOARD

LED 6

GAS

VALVE

41C

RIGHT IGNITOR

BIH152 Main Wiring Diagram (U.S., CE, and Non-CE Export)

3-44

8050502G

Refer to "PRINCIPAL WIRING

CONNECTIONS" on Page 3-42 for

detail of connection points J1, J2,

J3, C2, C3, and C5.

BIH52/MH52 Main Wiring Diagram (U.S. and Non-CE Export)

14C

BLK

BLOWER

SAFETY

DRAIN

SWITCH

12C

BLK

BLK COM

FOR UNITS WITH NO

SAFETY DRAIN SWITCH

ADD IN-LINE SPLICE

HI- LIM IT

11C

BLK

14C

BLK

WHITE

TO J3 PIN12

T2T1

TO C2 PIN1

TO C2 PIN3

TO C2 PIN12

13C

18C

BLK

OIL RETURN HEATER FRONT

GAS

VALVE

DRAIN

SAFETY

SWITCH

HI-LIMIT

COM

FO R UNI TS W I TH NO

ADD IN-LINE SPLICE

SAFETY DRAIN SWITCH

PROBE

TEM P

RED

WHITE

BLAC K

FULL VAT

TO J3 PIN6

TO J3 PIN2

TO J3 PIN9

COMPUTER GROUND (81C)

GND

VALVE

ALARM

(BURNER)

ORG

BLK

25V

GND

BLUE

BLK

GRN

BLK

ORG

WHT

LINE VOLTAGE (COM)

LINE VOLTAGE (L1)

DETAIL A-A

DETAIL

BLACK

RED

TO J1 PIN2

TO J1 PIN6

TO J1 PIN9

PWR GVAL24V

ForD

RLY

435

AL 12V

GV PWR

RLY

12 6

AIR

B/L

RLY

B/L

RLY

K3 K4

RLY

ForD

LT RT

BLK

ORG

BLK

GND

ORG

V2S

PWR

GND

V2D

SND

GND

SOUND DEVICE

WHT

BLUE

GRN

J1 J3

GND

25V

GREEN

BLUE

ALARM

VALVE

(BURNER)

PROBE

TEMP

DUAL VAT

COMPUTER OR CONTROLLER

TO J2

V1S

ALR

PW R

V1D

GND

WHITE WHITE

GAS

VALVE

WHITE

3-45

8050526D

OIL RETURN

HEATER FRONT

WHITE

GREEN

WHITE

ORANGE

BLACK

ALARM

VALVE

GROUND

(BURNER)

GROUND

25V

TO J1 PIN9

TO J1 PIN6

TO J1 PIN2

DUAL VAT ONLY

TEMP PROBE

RED

WHITE

HI-LIMIT

BLACK

COM

SAFETY DRAIN SWITCH

BLACK

GAS VALVE

14C

BLACK

13C 18C

FOR UNITS WITH NO

SAFETY DRAIN SWITCH

ADD IN-LINE SPLICE

BLACK

BLACK BLACK

BLACK

ADD IN-LINE SPLICE

SAFETY DRAIN SWITCH

FOR UNITS WITH NO

11C12C

BLACK

14C

GAS VALVE

BLACK

SAFETY DRAIN SWITCH

COM

BLACK TO J3 PIN9

HI-LIMIT

TO J3 PIN2

TO J3 PIN6

WHITE

RED

TEMP PROBE

RELAY

LEFT

DUAL DUAL

FULL

RIGHT

RELAY

J2 GND

V1S

ALARM

POWER

V1D

GND

BLUE

GREEN

25V

GROUND

ORANGE

(BURNER)

GROUND

VALVE

ALARM

SOUND DEVICE

TO J2

COMPUTER OR CONTROLLER

J3 OPPOSITE SIDE

J1 OPPOSITE SIDE

DETAIL

COMPUTER GND (81C)

BLACK

WHITE

GREEN

BLUE

GND GND

GND

V2D

PWR

A D

V2S

A S

TO J3 PIN12

DETAIL A-A

LINE VOLTAGE

LINE VOLTAGETO C2 PIN1

TO C2 PIN3

TO C2 PIN12

BLOWER

WHITE

GREEN

WHITE

T1 T2

(L1)

(COM)

BIH52/MH52 Main Wiring Diagram (CE)

Refer to "PRINCIPAL WIRING

CONNECTIONS" on Page 3-42 for

detail of conncection points J1, J2,

J3, C2, C3, and C5.

3-46

52C

4 2

30C

41C

13C

T-4

24V/50VA

LINE

RED

3 1

TO PIN 3

12C

RED

32C

45C

TO PIN 9

TO PIN 7

108C

11C

TO PIN 1

26C

MOTOR

TO PUMP

14C

T2T1

62C

92C

8050902C

SOLENOID

PUMP

10C

HEATER

PUMP

51C

27C

BIH52 Filter Box Wiring Diagram (U.S., CE, and Non-CE Export)

3-47

MH152 Transformer Wiring Diagram (U.S. and Non-CE Export)

COM

25C

2C GRN/YLW

7C ORG

3C WHT

11C WHT

WHT

BLUE

26C

WHT

2 31

10C BLK

79 810

456

12C

WHT

BLK

5C ORG

4C RED

8050504C

8C BLK

120V CONFIGURATION SHOWN

USE TERMINALS 11 AND 12 FOR 12V OUTPUT.

NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.

36C BLK

BLACK RED ORANGE WHITE

LINE

VOLTS

100 1

208

220

230

240

120 1

COM

3-48

MH152 Transformer Wiring Diagram (CE)

BRN

230V/1Ø/50HZ

INCOMING POWER

8C BLK

NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.

USE TERMINALS 11 AND 12 FOR 12V OUTPUT.

8050529B

4C RED

5C ORG

GRN/YLW

10C BLK

11C WHT

3C WHT

711 10 9 8

12C

WHT

62 3 4 5

1 32

26C

WHT

BLK

7C ORG

WHT

BLUE

2C GRN/YLW

25C NC NO

5 4

1 2

COM

BLUE

36C BLK

3-49

GREEN

TO BODY

CAUTION: THIS PLUG IS NOT BEING USED IN ITS

STANDARD 5-WIRE 120/208V NEMA L21-20P

CONFIGURATION. DO NOT CONNECT TO A STANDARD

120/208V 5-WIRE POWER SUPPLY.

WHITE

9C WHT

ORANGE

6C BLUE

4C RED

RED

BLACK

GREEN

1011 9 78

8C BLK

1245 6

12C WHT

BLK RED

HOOD

RELAY

10C BLK

1C BLK

11C WHT

3C WHT

7C ORG

1 2

2C GRN/YW

5C ORG

25C

5 4

1 2

COM

120V CONFIGURATION SHOWN

24C WHT

17C ORG

WHT

ORG

NEUTRAL

120

VAC

22C BLK

3 N

18C BLUE

1112 10 89 7

21 4 5

23C WHT

20C BLK

NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.

USE TERMINALS 11 AND 12 FOR 12V OUTPUT.

14C GRN/YW

16C RED

19C ORG

26C

WHT

36C

13C BLK

987

WHT

15C WHT

100

208

230

220

120

VOLTS

240

LINECOM

HOOD

RELAY

8050498D

BIH252/MH252 Transformer Box Wiring Diagram (U.S. and Non-CE Export)

3-50

8050499E

BIH352/MH352 Transformer Box Wiring Diagram (U.S. and Non-CE Export)

CAUTION: THIS PLUG IS NOT BEING USED IN ITS

STANDARD 5-WIRE 120/208V NEMA L21-20P

CONFIGURATION. DO NOT CONNECT TO A STANDARD

120/208V 5-WIRE POWER SUPPLY.

120V CONFIGURATION SHOWN

100

208

230

220

120

VOLTS

240

LINECOM

NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.

USE TERMINALS 11 AND 12 FOR 12V OUTPUT.

14C GRN/YLW

19C ORG

BLACK

ORANGE

WHITE

GREEN

4C RED

RED

6C BLUE

1211

8C BLK

ORG

WHT

GREEN

TO BODY

12C WHT

987

BLK

10C BLK

11C WHT

1C BLK

456

WHT3C WHT

N32

NEUTRAL

RED

HOOD

RELAY120

VAC

5C ORG

2C GRN/YLW

25C

36C BLK

WHT

26C

COM

34C

BLK

38C WHT

17C ORG

24C WHT

12 1011 9 8 7

20C BLK

23C WHT

22C

BLK

37C BLK

2 4 56

21C

WHT

39C WHT

31C ORG

1112

1 2

987

456

18C BLUE

15C WHT

28C GRN/YLW

7C ORG

16C RED

13C BLK

31 2

27C BLK

33C ORG

30C RED

32C BLUE

29C WHT

35C

WHT

HOOD

RELAY

3-51

8050500E

BIH452/MH452 Transformer Box Wiring Diagram (U.S. and Non-CE Export)

CAUTION: THIS PLUG IS NOT BEING USED IN ITS

STANDARD 5-WIRE 120/208V NEMA L21-20P

CONFIGURATION. DO NOT CONNECT TO A STANDARD

120/208V 5-WIRE POWER SUPPLY.

120V CONFIGURATION SHOWN

100

208

230

220

120

VOLTS

240

LINECOM

NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.

USE TERMINALS 11 AND 12 FOR 12V OUTPUT.

GREEN

TO BODY

HOOD

RELAY

RED

6C BLUE

GREEN

BLACK

WHITE

ORANGE

12C

WHT

RED

18C BLUE

24C

WHT

BLK

1C BLK

40C BLK

1 2

4C RED

8C BLK

5C ORG

20C BLK

22C BLK

13C BLK

41C WHT

4 5 6 1 2

19C ORG

WHT

16C RED

17C ORG

23C WHT

4 5 6

3C WHT

21C

WHT

7C ORG

15C WHT

2C GRN/YLW

14C GRN/YLW

ORG

WHT

NEUTRAL

120

VAC 39C

WHT

42C BLK29C WHT

30C RED

33C ORG

31C ORG

37C BLK

23N

38C WHT

1 2 4 5 6

52C WHT

28C GRN/YLW

36C BLK

COM

27C BLK

43C GRN/YLW

421 5 6

46C ORG

51C BLK

48C ORG

45C RED

44C WHT

1012 11 9 8 7 1012 11 9 8 7

HOOD

RELAY

1012 11 9 8 7

53C

WHT

1012 11 9 8 7

26C

WHT

25C

BLUE

34C

BLK

35C

WHT

32C

BLUE

49C

BLK

50C

WHT

42C

BLUE

3-52

BIH452/MH452 Transformer Box Wiring Diagram (CE)

NOTE: Also used for CE BIH252/MH252 and CE BIH352/MH352 Transformer Boxes.

36C BLK

6C BLUE

FRYER 1

18C BLUE

8050530D

FRYER 2 BRN

1 N3332

NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.

USE TERMINALS 11 AND 12 FOR 12V OUTPUT.

8C BLK

40C BLK

1C BLK

19C ORG

5C ORG

4C RED

7C ORG

14C GRN/YLW

22C BLK

13C BLK

41C WHT

20C BLK

17C ORG

16C RED

2C GRN/YLW

3C WHT

23C WHT

15C WHT

NC NO

1 2

COM

GRN/YLWBLUE

230V/1Ø/50HZ

FRYER 3 FRYER 4

46C ORG

51C BLK

37C BLK

31C ORG

33C ORG

30C RED

28C GRN/YLW

27C BLK

52C WHT

38C WHT

29C WHT

43C GRN/YLW

42C

BLUE

44C WHT

987

312

987

312

987

312

987

312

50C

WHT

42C BLK

45C RED

48C ORG

49C

ORG

32C

BLUE

35C

WHT

34C

BLK

12 11 10 9 78

1234 65

39C

WHT

12 11 10 9 78

1234 65

53C

WHT

26C

WHT

25C

BLUE

21C

WHT

12 11 10 9 78

1234 65

12 11 10 9 78

1234 65

WHT

24C

WHT

12C

WHT

4-1

CHAPTER 4: PARTS LIST

4.1 Accessories

11 12

ITEM PART # COMPONENT

1 803-0209 Brush, Frypot Cleaning

2 803-0197 Fryer’s Friend 27" (Clean-out Rod)

3 806-3068 Cover, Full-Vat Frypot

4 806-3407 Cover, Dual-Vat Frypot

* 826-0993SP Kit, Replacement Cover Handle

5 803-0132 Rack, Full-Vat Basket Support

6 803-0133 Rack, Dual-Vat Basket Support

8 826-0900 Kit, Chain Restraint

7 910-7443 Top Connecting Strip

9Coupling, Gas Line Female Quick-Disconnect

810-0070 ¾-inch

810-0073 1-inch

* 810-0478 Gas Line, Flexible, with Cut-Off Valve

10 813-0032 Bushing, Flexible Gas Line

11 812-1378 Drain Extension, Non-Filter Full Vat Fryer

12 812-1374 Drain Extension, Non-Filter Dual Vat Fryer

* 803-0022 Basket, Twin

* 826-1157 Kit, Fuse and Fuse Puller

* 803-0002 Powder, Filter – Approximately 100 Cups

* 803-0046 Cup, Plastic Filter Powder Measuring

* 803-0170 Filter Pack – 100 Sheets

* 803-0219 Pad, McDonald’s FP-III Universal Filter

* Not illustrated.

4-2

8.2 Cabinetry Components

8.2.1 BIH152 and MH152 Cabinet Components

11 21

BIH152

MH152

4-3

ITEM PART # COMPONENT

1 911-7688SP Side, BIH52 Left

2 912-7688SP Side, BIH52 Right

3 900-5521 Back, BIH152 Upper

4 900-5670 Back, BIH152 Lower

5Side, MH52 Left

911-7036 Before 6 Nov 2000

911-7688SP After 5 Nov 2000

6Side, MH52 Right

912-7036 Before 6 Nov 2000

912-7688SP After 5 Nov 2000

7Back, MH152 Lower

900-2654 Before 6 Nov 2000

900-5670 After 5 Nov 2000

8Back, MH152 Upper

900-2410 Before 6 Nov 2000

900-5521 After 5 Nov 2000

9 900-4180 Brace, BIH152/MH152 Top

10 900-5519 Brace, BIH152 Rear (and MH152 after 5 Nov 2000)

11 Channel, MH52 Cabinet Base Left and Right Side

900-7035 Before 6 Nov 2000

900-7687 After 5 Nov 2000

12 901-5526 Channel, BIH152 Base Left Side

13 902-5526 Channel, BIH152 Base Right Side

14 900-4389 Channel, BIH152 Base Rear

15 900-4179 Channel, MH152 Cabinet Base Front and Rear

16 806-8421 Rail Assembly, BIH152

17 910-5656 Leg, BIH152 Front

18 823-2579 Bracket, BIH152 Filter Motor Mount

19 Shield, MH152 Base

900-2541 Before 6 Nov 2000

200-0075 After 5 Nov 2000

20 900-2649 Cover, MH52 Rear Access (notch on right)

21 806-5209 Leg Pad Assembly

22 812-1326 Caster, BIH152 Rear

23 823-2844 Caster, BIH152 Front (on units built prior to Nov 2000, use 823-2582)

* 810-1414 Insert, BIH152 Square Leg (component of Item 23, adapts caster to leg)

24 810-0327 Caster, Rear (without brake)

25 Caster, Adjustable Front (with brake)

810-0326 Before 6 Nov 2000

810-0944 After 5 Nov 2000

26 809-0191 Washer, ¼-inch Lock

27 809-0131 Screw, ¼-20 x ¾-inch Hex Head

28 809-0412 Screw, #10 x ¾-inch Washer Hex Head (cabinet screw)

* Not illustrated.

4-4

4.2.2 BIH52 Cabinet Components (Batteries)

Detail of Gusset and

Filter Rail Construction

Detail of Base

Assembly Construction

NOTE: Items 26 and 27

are not used on CE units.

4-5

ITEM PART # COMPONENT

1 911-7688SP Side, Left Cabinet (all models)

2 912-7688SP Side, Right Cabinet (all models)

3 900-7714 Back, Upper Cabinet (BIH252, BIH452 and BIH552)

4 900-9424 Back, Upper Cabinet (BIH352 and BIH552)

5 900-7712 Back, Lower Cabinet (BIH252, BIH452 and BIH552)

6 900-9425 Back, Lower Cabinet (BIH352 and BIH552)

7 901-1810 Gusset, Left Cabinet (all models)

* 902-1810 Gusset, Right Cabinet (BIH252)

8 901-1948 Channel, Universal Side Support (all models)

9 911-4690 Rail, Left Top Filter (all models)

* 912-4690 Rail, Right Top Filter (all models)

10 910-5244 Rail, Universal Filter (all models)

11 900-1959 Bracket, Filter Lock Mounting (all models)

12 900-1957 Lock, Filter (all models)

13 809-0422 Screw, 10-32 x .4-inch Shoulder (all models)

14 809-0189 Washer, ¼-inch SS Flat

15 809-0053 Nut, 10-32 Hex

16 900-7687 Channel, Side Base (all models)

17 Channel, Rear Base

900-7686 BIH252

900-9420 BIH352

900-2390 BIH452

900-9555 BIH552

18 Channel, Front Base

900-4787 BIH352

900-2389 BIH452

9009556 BIH552

19 806-5209 Leg Pad Assembly (all models)

20 809-0191 Washer, ¼-inch Lock (all models)

21 809-0131 Screw, ¼-20 x ¾-inch Hex Head (all models)

22 810-0944 Caster with Brake, Front (all models)

23 810-0327 Caster, Rear (all models)

24 Shield

900-2452 BIH352

900-2453 BIH452

900-9601 BIH552

25 809-0412 Screw, #10 x ½-inch Hex Washer Head (cabinet screw, all models)

26 900-4798 Support, Long Cross (all models – not used on CE units)

27 900-2562 Support, Short Cross (all models – not used on CE units)

28 Brace, Top Front

900-7033 BIH252

900-9248 BIH352

900-2393 BIH452

900-9558 BIH552

29 Brace, Top Rear

900-7708 BIH252

900-7709 BIH352

* Not illustrated. LIST CONTINUED ON NEXT PAGE

4-6

4.2.2 BIH52 Cabinet Components (Batteries) (Continued)

ITEM PART # COMPONENT

900-2391 BIH452

900-9557 BIH552

30 900-7710 Post, Cabinet (all models)

31 900-7358 Divider, Cabinet (all models)

32 Post, Short Door

900-4797 All non-CE models.

900-2437 All CE models.

33 900-4799 Post, Long Door (BIH352, BIH452 and BIH552)

* 809-0413 Spacer, Door Post (1/4-inch ID x 4mm nylon washer)

* Not illustrated.

4.2.3 MH52 Cabinet Components (Batteries)

NOTE: MH52 cabinetry was standardized with BIH52 cabinetry beginning with units manufactured 6

November 2000 and later. All MH52 cabinetry components except base assembly parts on units

manufactured after 6 November 2000 are the same as those on BIH52 units of the same size.

Detail of Base

Assembly Construction

4 5

11 11

15 16

4-7

ITEM PART # COMPONENT

1Side, Left Cabinet (all models)

911-7036 Before 6 Nov 2000

911-7688SP After 5 Nov 2000

2Side, Right Cabinet (all models)

912-7036 Before 6 Nov 2000

912-7688SP After 5 Nov 2000

3Back, Lower Cabinet

Before 6 Nov 2000)

900-2652 MH252

900-2651 MH352

900-4915 MH452

900-9600 MH552

After 5 Nov 2000

900-7712 MH252, MH452, and MH552 (18-inches x 31-inches)

900-9425 MH352 and MH552 (18-inches x 46.5-inches)

4Back, Upper Cabinet, MH252 and MH552

900-2411 Before 6 Nov 2000 (10.2-inches x 31.1-inches)

900-7714 After 5 Nov 2000 (18.72-inches x 31.24-inches)

5Back, Upper Cabinet, MH352 and MH552

900-2412 Before 6 Nov 2000 (10.2-inches x 46.6-inches)

900-9424 After 5 Nov 2000 (18.72-inches x 46.88-inches)

*Back, Upper Cabinet, MH452

900-2413 Before 6 Nov 2000 (9.66-inches x 62.36-inches)

900-7714 After 5 Nov 2000 (18.72-inches x 31.24-inches)

6Brace, Top Front

900-7033 MH252

900-9248 MH352

900-2393 MH452

900-9558 MH552

*Brace, Top Rear (used only on units built after 05 Nov 2000)

900-7708 MH252

900-7709 MH352

900-2391 MH452

900-9557 MH552

7Post, Door (all models)

900-7032 Before 6 Nov 2000

900-4799 After 5 Nov 2000

* 809-0413 Spacer, Door Post (1/4-inch ID x 4mm nylon washer )

8Divider, Cabinet (all models)

900-7356 Before 6 Nov 2000

900-7358 After 5 Nov 2000

9Brace, Back Support (all models)

900-7053 Before 6 Nov 2000

900-7710 After 5 Nov 2000

10 Channel, Cabinet Base Left and Right Side (all models)

900-7035 Before 6 Nov 2000

900-6787 After 5 Nov 2000

* Not illustrated. LIST CONTINUED ON NEXT PAGE

4-8

ITEM PART # COMPONENT

11 Channel, Cabinet Base Front and Rear

MH252

900-7034 Before 6 Nov 2000

900-7686 After 5 Nov 2000

MH352

900-9249 Before 6 Nov 2000

900-9420 After 5 Nov 2000

MH452

900-4906 Before 6 Nov 2000

900-2390 After 5 Nov 2000

MH552

900-9611 Before 6 Nov 2000

900-9555 After 5 Nov 2000

12 Support, Center Base (MH452, MH552)

900-4907 Before 6 Nov 2000

200-0769 After 5 Nov 2000

13 Shield, Cabinet Base

MH252, MH452

900-2527 Before 6 Nov 2000 (18-inches x 25.2-inches) (MH452 uses 2)

200-0772 After 5 Nov 2000 (17.75-inches x 25.06-inches) (MH452 uses 2)

MH352

900-2528 Before 6 Nov 2000 (18-inches x 17.5-inches) plus 900-2527

200-0771 After 5 Nov 2000 (17.75-inches x 40.7-inches)

MH552

900-9623 Before 6 Nov 2000 (18-inches x 33-inches)

After 5 Nov 2000 uses 1 each of 200-0771 and 200-0772

14 806-5209 Leg Pad Assembly (all models)

15 810-0944 Caster with Brake, Front (all models)

16 810-0327 Caster, Rear (all models)

17 809-0191 Washer, ¼-inch Lock (all models)

18 809-0131 Screw, ¼-20 x ¾-inch Hex Head (all models)

19 900-2468 Cover, MH52 Rear Access (no notch)

20 900-2649 Cover, MH52 Rear Access (notch on right corner when viewed from rear)

21 900-2650 Cover, MH52 Rear Access (notch on left corner when viewed from rear)

22 900-5482 Cover, MH52 Rear Access (notch in center)

23 809-0412 Screw, #10 x ½-inch Hex Washer Head (cabinet screw, all models)

* Not illustrated.

4-9

THIS PAGE INTENTIONALLY LEFT BLANK

4-10

4.2.4 BIH52/MH52 Cap-N-Splash Assemblies, Fluecaps, Standoffs and Related Parts

11 12

25 26 27

19 20 21 22

23 24

NOTE: Items 19 through 27 are shown

disproportionately larger than other

items for clarity.

Fluecap

Assemblies

Cap-N-Splash

Assemblies

Standoffs

Basket Hangers and

Mounting Hardware

4-11

ITEM PART # COMPONENT

Fluecap Assemblies

1 910-2414 BIH152/MH152 (standard)

2 900-7921 BIH152/MH152 (for units with Cap-N-Splash)

3 823-2544 BIH252/MH252 (standard)

4 900-7926 BIH252/MH252 (for units with Cap-N-Splash)

5 823-2545 BIH352/MH352 (standard)

6 900-2927 BIH352/MH352 (for units with Cap-N-Splash)

7 823-2546 BIH452/MH452 (standard)

8 900-7928 BIH452/MH452 (for units with Cap-N-Splash)

9 823-2887 BIH552/MH552 (standard)

Cap-N-Splash Assemblies

10 823-2276 BIH152/MH152

11 823-2277 BIH252/MH152

12 823-2833 JBIH252 (Japanese units)

13 823-2278 BIH352/MH352

14 823-2879 JBIH352 (Japanese units)

* 823-2279 BIH452

Standoffs

15 900-2406 MH152

16 900-2407 MH252

17 900-2408 MH352

18 900-2409 MH452

Basket Hangers and Mounting Hardware

19 823-0782 Solid (old design)

20 823-1618 Solid (new design)

21 810-1401 Wire Form (with .255-inch mounting holes)

22 810-1403 Wire Form (with .330-inch mounting holes)

23 809-0171 Thumbscrew, ¼-20 x 1⅜-inch

24 809-0402 Thumbscrew, ¼-20 x ½-inch

25 809-0015 Nutsert, ¼-20 Square (for use on standard fluecap)

26 809-0535 T-Nut, ¼-20 x 7/16-inch (for use on Cap-N-Splash assembly)

27 809-0079 Nutsert, ¼-20 Round (for use on early-production Cap-N-Splash)

* Not illustrated.

4-12

4.2.5 BIH52/MH52 Control Panel Frames and Topcaps

BIH52/MH52

Control Panel Frames

BIH52

Topcaps

MH52

Topcaps

ITEM PART # COMPONENT

1 806-6137 BIH152/MH152 Control Panel Frame Assembly

2 806-4819 BIH252/MH252 Control Panel Frame Assembly

3 806-4820 BIH352/MH352 Control Panel Frame Assembly

4 806-5963 BIH452/MH452 Control Panel Frame Assembly

5 806-9750 BIH552/MH552 Control Panel Frame Assembly

6 824-0641 BIH152 Topcap

7 823-2657 JBIH152 Topcap (Japanese units)

8 824-0544 BIH252 Topcap

9 823-2652 JBIH252 Topcap (Japanese units)

10 824-0543 BIH352 Topcap

11 823-2651 JBIH352 Topcap (Japanese units)

12 824-0545 BIH452 Topcap

13 824-0775 BIH552 Topcap

14 824-0641 MH152 Topcap

15 824-0544 MH252 Topcap

16 824-0543 MH352 Topcap

17 824-0545 MH452 Topcap

4-13

4.2.6 BIH52/MH52 Door Components

11 12

Inside Face

of Door

Inside Face

of Door

ITEM PART # COMPONENT

1 806-3057SP Door Assembly with Magnet, BIH52/MH52 Complete

2 806-6545SP Door Assembly without Magnet, BIH52/MH52 Complete

3 810-1422 Handle, Wireform Door

4 826-1379 Screw, #10 x ½-inch Phillips Truss Head (Pkg of 10)

5 810-1508 Hinge, Universal Door

* 826-1371 Screw, #8 x ½-inch Hex Head (Pkg of 25) (for attaching Item 5 to cabinet)

6 106-0554 Pin Assembly, Door Hinge

7 809-0193 Washer, ¼-inch Nylon Flat

8 810-0275 Spring, Door Hinge

9Liner, Door

900-2485 BIH52/MH52 Universal Door (no cutout for magnet)

930-3667 BIH52/MH52 Door (with cutout for magnet)

10 824-0137 Panel, BIH52/MH52 Door

11 810-0066 Magnet (door-mounted, used with Item 1)

12 810-1105 Magnet (door post-mounted, used with Item 2)

* Not illustrated.

NOTE: Handle (Item 3), Hinge (Item 5), and Washer (Item 7) are not included in Door Assemblies

(Items 1 and 2). These components must be ordered separately.

4-14

4.3 Combustion System, Frypot, and Gas System Components

4.3.1 Blowers and Associated Parts

1 2 3 4

ITEM PART # COMPONENT

1Blower, Left (with 1.54-inch (3.91 cm) wide housing)

806-4354SP 100V, 50/60 Hz

826-1512 115V, 50/60 Hz

806-5841SP 230V, 50 Hz

2 826-1510 Blower, Left, 230V, 50/60 Hz (with 2.8-inch (7.11 cm) wide housing)

3Blower, Right (with 1.54-inch (3.91 cm) wide housing)

806-4697SP 100V, 50/60 Hz

826-1511 115V, 50/60 Hz

806-7060SP 230V, 50 Hz

4 826-1509 Blower, Right, 230V, 50 Hz (with 2.8-inch (7.11 cm) wide housing)

5 806-9703 Blower Assembly, Left 230V, 50 Hz (CE)

6 806-9705 Blower Assembly, Right 230V, 50 Hz (CE)

7 806-9689 Finger Guard/Air Flow Inhibitor Adapter (CE)

8 900-8699 Air Flow Inhibitor (CE)

9 809-0342 Wingnut, 8-32

10 826-1426 Shield, MH52 Blower Motor

* KIT-0155SP High Altitude Blower Kit (required above 5000 Ft, 1525 M)

* Not illustrated.

NOTE: Items 7, 8, and 9 are components of Items 5 and 6. In CE units, they replace the rotating air

shutter that is standard on 230V Blowers 826-1510 and 826-1509 (Items 2 and 4).

4-15

4.3.2 Ignition Sub-System Components

ITEM PART # COMPONENT

1 See Pg 4-28 Ignition Module, Full and Dual Vat (original design, with fuse)

2 See Pg 4-28 Ignition Module, Full Vat (new design, without fuse)

3 See Pg 4-28 Ignition Module, Dual Vat (new design, without fuse)

4Ignition Cable (with two 90º connectors, used with Item 1 only)

807-1878 19-inches long

807-1200 27-inches long

5 807-3367 Ignition Cable (with one 90º connector, used with Items 2 and 3 only)

6 806-6085 Wiring Assembly, Ignitor

7 806-6084 Wiring Assembly, Ignition Module

8 807-2263 Switch, Air Pressure (use 807-2262 in units with 100VAC power supply)

9Ignitor and Gasket Kit

826-0981 Natural Gas (G20, G25)

826-0982 Propane/Butane (G30, G31)

826-1002 Manufactured Gas

10 Orifice

810-1221 2.00 mm Propane/Butane (0-4999 Ft, 0-1524 M) (Japan)

810-1325 2.05 mm Propane/Butane (G30, G31) (0-4999 Ft, 0-1524 M)

810-0386 2.10 mm Propane/Butane (0-4999 Ft, 0-1524 M)

810-0413 2.16 mm Propane/Butane (G30, G31) (5000-6999 Ft, 1525-2133 M)

812-1028 2.20 mm Propane/Butane (G30, G31) (7000-10,999 Ft, 2134-3352 M)

812-1134 3.10 mm Natural Gas (G20, G25) (0-4999 Ft, 0-1524 M) (Japan)

810-0403 3.40 mm Natural Gas (G20, G25) (0-4999 Ft, 0-1524 M)

810-0437 3.60 mm Natural Gas (G20, G25) (5000-6999 Ft, 1525-2133 M)

812-1144 3.65 mm Natural Gas (G20, G25) (7000-8999 Ft, 2134-2743 M)

812-1145 3.70 mm Natural Gas (G20, G25) (9000-10,999 Ft, 2744-3352 M)

810-0642 5.95 mm Manufactured Gas (0-4999 Ft, 0-1524 M)

* 826-1196 Conversion Kit, Natural Gas (G20, G25) to Propane/Butane (G30, G31)

* 826-1197 Conversion Kit, Propane/Butane (G30, G31) to Natural Gas (G20, G25)

* Not illustrated.

4-16

4.3.3 Frypot Assembly Components

234 5

14 15 14

30 31

Full Vat Frypot

Components

(See Page 4-20 for

list of Service Frypot

Kits and Insulation

Kits.)

4-17

ITEM PART # COMPONENT

1 823-0969SP Plenum (NOTE: use 823-1048 on units equipped with Air Switch)

2 826-1372 Nut, ¼-20 Hex (Pkg of 10)

3 809-0435 Washer, ¼-inch x ¾-inch Flat

4 816-0057 Gasket, Plenum

5 900-1049 Retainer, Plenum Gasket

6 826-1371 Screw, #8 x ½-inch Hex Head (Pkg of 25)

7 826-1368 Nut, ¼-20 Serrated Flange

8 810-0500 Spacer, ¼-inch x 15/16-inch

9 823-11691 Retainer, Full Vat Left Outer Combustion Chamber Insulation

10 823-1169 Retainer, Full Vat Right Outer Combustion Chamber Insulation

11 812-0661 Insulation, Full Vat Combustion Chamber Outer

12 826-1340 Spacer, ¼-inch x 1 3/16-inch (Pkg of 10)

13 900-1031 Retainer, Sight Glass

14 812-0356 Gasket, Sight Glass

15 814-0048 Sight Glass

16 900-1210 Retainer, Full Vat Left Inner Combustion Chamber Insulation

17 900-1211 Retainer, Full Vat Right Inner Combustion Chamber Insulation

18 812-0457 Insulation, Full Vat Inner Combustion Chamber

19 900-3742 Retainer, Full Vat Frypot Outer Front Insulation

20 812-0353 Insulation, Full Vat Frypot Outer Front

21 824-0157 Seal, Full Vat Frypot Left

22 824-0158 Seal, Full Vat Frypot Right

23 812-0404 Insulation, Frypot Seal

24 Kit, Burner Replacement (for use on either side; includes Item 25)

826-1072 Natural and Propane Gas

826-1073 Manufactured Gas

25 812-0357 Insulation, Burner

26 823-17771SP Rail, Full Vat Right Burner

27 823-1777SP Rail, Full Vat Left Burner

28 812-1029 Insulation, Frypot Side

29 900-4452 Retainer, Frypot Side Insulation

30 812-0355 Insulation, Full Vat Rear Combustion Chamber

31 900-1222 Back, Left Full Vat Combustion Chamber

32 900-1223 Back, Right Full Vat Combustion Chamber

33 900-1221 Retainer, Full Vat Combustion Chamber Back

34 810-0406 Spacer, ¼-inch x 1 7/16-inch

35 930-0818 Bracket, Flue to Frypot Mounting

36 806-5859SP Flue Assembly, Full Vat

37 812-0993 Insulation, Frypot Upper

38 900-1515 Retainer, Frypot Upper Insulation

39 900-0857 Bracket, BIH52 Frypot Mounting

40 900-1401 Bracket, MH52 Frypot Mounting

41 809-0362 Screw, #8 x 1-inch Hex Washer Head

42 812-0706 Insulation, Burner Rail

* 813-0156 Plug, ½-inch NPT (for blocking off unneeded ports in service frypot)

* 813-0336 Plug, ½-inch NPT SS (for blocking off unneeded ports in service frypot)

* Not illustrated.

4-18

Dual Vat Frypot

Components

(See Page 4-20 for

list of Service Frypot

Kits and Insulation

Kits.)

2 3 4 5

11 3

12 13 14 13 15 16

17 18

20 21

4-19

ITEM PART # COMPONENT

1Plenum

823-0970SP Standard Dual Vat

823-1049 For use on units with Air Switch.

823-2181 For use on JBIH152 models only.

2 826-1372 Nut, ¼-20 Hex (Pkg of 10)

3 809-0435 Washer, ¼-inch x ¾-inch Flat

4 816-0057 Gasket, Plenum

5 900-1049 Retainer, Plenum Gasket

6 826-1371 Screw, #8 x ½-inch Hex Head (Pkg of 25)

7 826-1368 Nut, ¼-20 Serrated Flange

8 810-0500 Spacer, ¼-inch x 15/16-inch

9 823-0968 Retainer, Dual Vat Outer Combustion Chamber Insulation

10 812-0456 Insulation, Dual Vat Combustion Chamber Outer

11 826-1340 Spacer, ¼-inch x 1 3/16-inch (Pkg of 10)

12 900-1031 Retainer, Sight Glass

13 812-0356 Gasket, Sight Glass

14 814-0048 Sight Glass

15 823-0983 Retainer, Dual Vat Inner Combustion Chamber Insulation

16 812-0458 Insulation, Dual Vat Inner Combustion Chamber

17 930-3628 Retainer, Dual Vat Frypot Outer Front Insulation

18 812-0352 Insulation, Dual Vat Frypot Outer Front

19 824-0159 Seal, Dual Vat Frypot Left

20 824-0160 Seal, Dual Vat Frypot Right

21 812-0404 Insulation, Frypot Seal

22 Kit, Burner Replacement (for use on either side; includes Item 23)

826-1072 Natural and Propane Gas

826-1073 Manufactured Gas

23 812-0357 Insulation, Burner

24 823-2823SP Rail, Dual Vat Right Burner

25 823-2822SP Rail, Dual Vat Left Burner

26 812-1029 Insulation, Frypot Side

27 900-4452 Retainer, Frypot Side Insulation

28 809-0362 Screw, #8 x 1-inch Hex Washer Head

29 812-0354 Insulation, Dual Vat Rear Combustion Chamber

30 930-0789 Back, Dual Vat Combustion Chamber

31 900-0914 Retainer, Dual Vat Combustion Chamber Back

32 812-0688 Insulation, Dual Vat Gas Collector

33 930-0818 Bracket, Flue to Frypot Mounting

34 810-0406 Spacer, ¼-inch x 1 7/16-inch

35 806-5860SP Flue Assembly, Dual Vat

36 812-0993 Insulation, Frypot Upper

37 900-1515 Retainer, Frypot Upper Insulation

38 900-0857 Bracket, BIH52 Frypot Mounting

39 900-1401 Bracket, MH52 Frypot Mounting

40 812-0706 Insulation, Burner Rail

* 813-0156 Plug, ½-inch NPT BM (for blocking off unneeded ports in service frypot)

* 813-0336 Plug, ½-inch NPT SS (for blocking off unneeded ports in service frypot)

* Not illustrated.

4-20

4.3.4 Service Frypot Kits, Insulation Kits, and Miscellaneous Service Parts

Service Frypot Kits

The fully assembled service frypot kits listed below contain all components illustrated on Pages

4-16 and 4-18 except the plenum, and the plenum gasket retainer. The kits also contain two

Ignitor Gaskets (816-0059). These service frypot kits are ready for installation.

• 806-3876SP – Full Vat (Manufactured Gas)

• 806-4787SP – Full Vat (Natural Gas (G20/G25)

• 806-4789SP – Full Vat (Propane/Butane (G30/G31))

• 806-3878SP – Dual Vat (Manufactured Gas)

• 806-4788SP – Dual Vat (Natural Gas (G20/G25))

• 806-4790SP – Dual Vat (Propane/Butane Gas (G30/G31))

Insulation Kits, Complete

The insulation kits listed below contain all insulation illustrated on Pages 4-16 and 4-18,

respectively. The kits also contain two Ignitor Gaskets (816-0059), two Sight Glasses (814-

0048), two Plenum Gaskets (816-0057), one Upper Frypot Insulation Retainer (900-1515), and

all spacers, screws, nuts, and washers required for installing the insulation.

• 826-0929 – Full Vat

• 826-0930 – Dual Vat

Insulation Kits, Burner

• 826-0931 – Full Vat

This kit includes the components listed. Item numbers refer to illustration on Page 4-16.

812-0357 – Insulation, Burner (Item 25)

812-0457 – Insulation, Full Vat Inner Combustion Chamber (Item 18)

812-0355 – Insulation, Full Vat Rear Combustion Chamber (Item 30)

816-0057 – Gasket, Plenum (Item 4)

• 826-0932 – Dual Vat

This kit includes the components listed. Item numbers refer to illustration on Page 4-18.

812-0357 – Insulation, Burner (Item 23)

810-0458 – Insulation, Dual Vat Inner Combustion Chamber (Item 17)

812-0354 – Insulation, Dual Vat Rear Combustion Chamber (Item 29)

816-0057 – Gasket, Plenum (Item 4)

Miscellaneous Frypot Service Parts

• 210-0681 – Probe Guard

• 806-6142SP – Riser Assembly, Flue (replaces upper section of Flue Assemblies 806-5859SP

and 806-5860SP.)

• 900-2298 – Shutter, BIH152 Plenum

4-21

4.3.5 Gas Manifolds – Single BIH52/MH52 Units

BIH152 Manifold

10 5

1-piece MH152 Manifold

ITEM PART # COMPONENT

1 813-0165 Elbow, ½-inch NPT Street x 90º

2 813-0265 Nipple, ½-inch NPT x 2½-inch

3 813-0003 Tee, ½-inch NPT

4 813-0093 Nipple, ½-inch NPT x 4-inch

5 813-0062 Elbow, ½-inch NPT x 90º

6 900-5616 Mount, BIH152 Gas Line

7 900-5596 Mount, Valve Plate (used with Non-CE Gas Valves 810-0801/0802 only)

8 809-0107 Screw, 8-32 x ⅜-inch Slotted Round Head

9 900-8740 Mount, Valve Plate (used with CE Gas Valve 810-1715 only)

10 813-0022 Nipple, ½-inch NPT Close

11 813-0173 Union, ½-inch NPT

12 813-0496 Nipple, ½-inch NPT x 9.5-inch

13 813-0253 Nipple, ½-inch NPT x 10-inch

14 813-0320 Nipple, ½-inch NPT x 8-inch

15 900-5615 Support, BIH152 Gas Line

16 810-0959 Manifold, MH152 1-piece Gas

17 813-0469 Cap, ½-inch NPT Pipe (closes off unused port in full vat configurations)

18 813-0109 Nipple, ¾-inch NPT Close

* 810-1425 Fitting, ½-inch Quick Disconnect x ½-inch Female NPT

* Not illustrated.

4-22

4.3.6 Gas Manifolds – BIH52/MH52 Multi-Fryer Units

45 6

94110 12

17 18 19 20 19 21

OR 24a24 6

18 19

Typical Configuration for Systems

using non-CE Gas Valves

810-0801 or 810-0802

Typical Configuration for Systems

using CE Gas Valve 810-1715

35 34

30 33

Full Vat (left) and Dual Vat (right)

Manufactured Gas Configurations

(MH52 and BIH52)

1-piece Manifolds (used on MH52 units only)

4-23

NOTE: The drawings on the preceding page illustrate typical gas manifold configurations. Specific

configurations vary depending upon the number and types of fryers in a battery. The purpose of the

drawings is to illustrate all individual components that may be found in any given configuration.

Determination of which component to use in a particular application should be based upon careful

inspection of the existing components, including taking measurements when appropriate.

ITEM PART # COMPONENT

1 813-0087 Nipple, ½-inch NPT x 1½-inch (3.8 cm)

2 813-0003 Tee, ½-inch NPT

3 813-0156 Plug, ½-inch NPT Pipe

4 813-0173 Union, ½-inch NPT

5 813-0497 Nipple, ½-inch NPT x 12½-inch (31.8 cm)

6 813-0062 Elbow, ½-inch NPT x 90º

7 813-0320 Nipple, ½-inch NPT x 8-inch (20.3 cm)

8 813-0022 Nipple, ½-inch NPT x Close

9 813-0460 Nipple, ½-inch NPT x 3-inch (7.6 cm)

10 813-0031 Bushing, ¾-inch NPT to ½-inch Reducer

11 823-2260 Bracket, ¾-inch NPT Gas Manifold Mounting

12 813-0157 Plug, ¾-inch NPT Pipe

13 813-0168 Elbow, ¾-inch NPT x 90º Street

14 813-0110 Nipple, ¾-inch NPT x 1½-inch (3.8 cm)

15 813-0066 Elbow, ¾-inch NPT x 90º

16 813-0478 Nipple, ¾-inch NPT x 12½-inch (31.8 cm)

17 813-0271 Tee, ¾-inch NPT x ½-inch Branch

18 813-0386 Nipple, ¾-inch NPT x 12-inch (30.5 cm)

19 813-0387 Tee, ¾-inch NPT

20 813-0109 Nipple, ¾-inch NPT x Close

21 813-0479 Nipple, ¾-inch NPT x 11-inch (27.9 cm)

22 813-0068 Elbow, ¾-inch NPT x ½-inch NPT x 90º

23 813-0281 Nipple, ½-inch NPT x 5-inch (12.7 cm)

24 813-0515 Nipple, ½-inch NPT x 12-inch (30.5 cm)

24a 813-0360 Nipple, ½-inch x 14-inch (in CE BIH352-6 Natural Gas (G20/G25) units only)

25 813-0253 Nipple, ½-inch NPT x 10-inch (25.4 cm)

26 813-0265 Nipple, ½-inch NPT x 2½-inch (6.4 cm)

27 813-0112 Nipple, ¾-inch NPT x 2-inch (5.1 cm)

28 813-0476 Nipple, ¾-inch NPT x 14-inch (35.6 cm)

29 813-0096 Nipple, ½-inch NPT x 6-inch (15.2 cm)

30 900-0944 Plate, 1-inch NPT Gas Manifold Mounting

31 813-0202 Elbow, 1-inch NPT x 90º

32 813-0314 Tee, 1-inch NPT

33 813-0318 Nipple, 1-inch NPT x 3-inch (7.6 cm)

34 813-0138 Nipple, 1-inch NPT x Close

35 813-0371 Nipple, 1-inch NPT x 2-inch (5.1 cm)

36 809-0347 Nut, 1-inch NPT Retainer

37 810-0661 Manifold, 1-piece H252 Gas

38 810-0660 Manifold, 1-piece H352 Gas

39 813-0469 Cap, ½-inch NPT Pipe (closes off unused port in full vat configurations)

4-24

4.3.7 Gas Valves, Gas Lines, and Fittings

8910 11 12 13 14

15 16

18 19

26 28

30 30

4-25

ITEM PART # COMPONENT

1Gas Valve, Non-CE

810-0801 Natural Gas (G20/G25)

810-0802 Propane (LP) Gas (G30/G31)

2 810-0691 Vent Tube (used with Item 1)

3 810-1715 Gas Valve, Universal CE (G20/G25/G30/G31)

4 810-1041 Accessory Kit (2 straight and 2 elbow flanges, screws, O-rings, LP gas spring)

5 806-9678 Plug Assembly, CE Gas Valve (used with Item 3)

6 807-1229 Gas Valve, Manufactured Gas

7 810-1176 Tap, ⅛-inch NPT Pressure

8 813-0411 Plug, ⅛-inch NPT Allen-head Pipe

9 813-0304 Bushing, ½-inch to ¼-inch NPT Reducer

10 810-1006 Bushing, ¼-inch to ⅛-inch NPT Reducer

11 813-0004 Elbow, 90º x ⅛-inch NPT

12 813-0354 Elbow, 90º x ⅛-inch NPT x ⅛-inch Tube (Brass)

13 813-0302 Elbow, 90º x ⅜-inch Tube x ¼-inch Male NPT (Brass)

14 813-0502 Elbow, 90º Street x ¼-inch (Brass)

15 813-0340 Connector, ⅛-inch Tube to ⅛-inch Male NPT (Brass)

* 813-0014 Connector, ⅛-inch Tube to ⅛-inch Male NPT (Brass) (with Item 6 only)

16 810-1025 Connector, ⅜-inch Tube to ¼-inch Male NPT (Brass)

17 813-0507 Coupling, ¼-inch NPT (Brass)

18 813-0378 Cross Fitting, ½-inch Female NPT (Brass)

19 810-1026 Tee, ¼-inch NPT Street (Brass)

20 813-0495 Tee, ¼-inch Male NPT Branch (Brass)

21 813-0377 Tee, ⅛-inch Female NPT (Brass)

22 813-0016 Nipple, ⅛-inch NPT Close

23 813-0315 Nipple, ⅛-inch NPT x 1½-inch (4.8 cm)

24 813-0405 Nipple, ⅛-inch NPT x 2-inch (5.1 cm)

25 813-0471 Nipple, ¼-inch NPT x 1½-inch (4.8 cm)

26 900-3739 Gas Tube (Left), H52 FV Manufactured Gas (pre-formed)

27 810-0503 Compression Nut (Ferrule), ½-inch Manufactured Gas Tube

28 900-3737 Gas Tube (Right), H52 FV Manufactured Gas (pre-formed)

* 900-3735 Gas Tube (Left and Right), H52 DV Manufactured Gas (pre-formed)

29 Flexible Stainless Steel Gasline (Flexline), ⅜-inch OD

810-1353 9-inch (22.9 cm)

810-1354 12-inch (30.5 cm)

810-1355 15-inch (38.1 cm)

30 810-0494 Compression Nut (Ferrule), ⅜-inch Flexible Gas Line

*Enrichment Tube

811-0752 5½-inch (14 cm)

811-0756 8½-inch (21.6 cm)

811-0800 12½-inch (31.8 cm)

812-0742 18-inch (45.7 cm)

* Not illustrated.

4-26

4.4 Electronics

4.4.1 Computers, Controllers, and Associated Components

1 1 2

ABC DEF GHI JKL MNO PQR STU VW X YZ-*-

1234567890

4-27

ITEM PART # COMPONENT

1Computer, McDonald’s M100B Gas Fryer

806-7990E U.S. and Canada

806-8036E Non-CE Export with 6-second Melt Cycle

806-8041E Non-CE Export with 8-second Melt Cycle

806-8040 Factory-programmed in French

806-8100E CE Export

2Computer, McDonald’s M2000 Gas Fryer

106-0484E U.S. and Canada

106-0487E Non-CE Export with 6-second Melt Cycle

106-0489E Non-CE Export with 8-second Melt Cycle

106-0488E Factory-programmed in French

106-0492E CE Export

3Controller, McDonald’s Full Vat Gas Fryer Solid-State

806-3007 With 6-second Melt Cycle

806-3571 With 8-second Melt Cycle

4Controller, McDonald’s Dual Vat Gas Fryer Solid-State

806-3009 With 6-second Melt Cycle

806-3572 With 8-second Melt Cycle

5 810-0387 Knob, Replacement Control (for use on Solid-State Controllers)

6 806-2071 Cable, Computer/Controller to Interface Board

7 806-7545 Thermostat, High-Limit

8 806-4206 Probe Assembly, Temperature

* 826-1321 Retrofit Kit, Solid-State Controller to M100B Computer

* 826-1675 M100B to M2000 Speaker and Mount Retrofit Kit

* 807-1617 M2000 Speaker

* Not illustrated.

4-28

4.4.2 Component Boxes

IFB 806-3398 (Item 6) has only one fuse. If

used with 807-3365 or 807-3366 modules,

an in-line fuse should be added between the

module and the board.

Full vat units using one 807-3366 module

(Item 3) require only one latch relay (Item 5).

Full or dual vat units using two 807-1006,

807-2971, or 807-3365 modules require a

latch relay (Item 5) for each module.

IFB 106-0386 (Item 7) has two

fuses and may be used with any

of the ignition modules.

10 12

11 13

515

ITEM PART # COMPONENT

1 806-9849 Box Assembly, One-Piece Component

2 807-1006 Ignition Module, Full or Dual Vat (fuse-protected)

* 807-2971 Ignition Module, Full or Dual Vat (fuse-protected) (Australian units only)

3 807-3366 Ignition Module, Full Vat (unfused – use inline fuse 106-0531)

4 807-3365 Ignition Module, Dual Vat (unfused – use inline fuse 106-0531)

5 807-0833 Relay, 12V 5Amp Latch

6 806-3398 Interface Board (single fuse-protected) (use with 807-1006 only)

7 106-0386 Interface Board (double fuse-protected) (use with 807-3365 or 807-3366)

* 806-4973 Interface Board (used with 240V manufactured gas units only)

8 807-1926 Bushing, .875 Diameter Split

9 816-0217 Paper, Insulating (Items 9, 10, 11, 12 not used on BIH152 or Hong Kong units)

10 810-1164 Block, Terminal (See Item 9)

11 809-0354 Screw, 4-40 x ¾-inch Slotted Round Head (See Item 9)

12 809-0237 Nut, 4-40 Keps Hex (See Item 9)

13 807-1241 Spacer, Interface Board (.151-inch ID x ⅝-inch)

14 809-0250 Nut, 6-32 Keps Hex

15 807-0037 Tab, Push-On Terminal

16 809-0446 Spacer, Ignition Module (.260-inch ID x ½-inch)

17 809-0441 Screw, #7 x 1½-inch Slotted Washer Hex Head

* 806-3660 Sound Device, High Output (Use 807-1617 with M2000 Computers)

* 807-1359 Mount, Tie-Wrap (used on CE units only)

* Not illustrated.

4-29

4.4.2 Filter Box Components

120V FILTER BOX 100/120V DUAL-VOLTAGE

FILTER BOX

MULTI-VOLTAGE (CE)

FILTER BOX

11 12 13 14 11 12 13 14 11 12 13 14

86 7 96 7 106 7

222

ITEM PART # COMPONENT

1 900-5250 Box, Filter

2 807-0156 Connector, 9-Pin Female

* 807-2518 Plug, Mate-N-Lock Keying (used w/Item 2)

3 809-0360 Screw, #8 x ⅜-inch Hex Washer Slot Head

4 807-0012 Relay, Non-CE 18 Amp 1⁄3-HP 24V Coil

5 807-2434 Relay, CE 18 Amp 1⁄3-HP 24V Coil

6 809-0096 Screw, 6-32 x ⅝-inch Slot Head

7 809-0250 Nut, 6-32 Keps Hex

8 807-0800 Transformer, 120/24VAC 50/60Hz 50VA

9 807-2176 Transformer, Dual Voltage (100 or 120/24VAC) 50/60Hz 50VA

10 807-1999 Transformer, Multi-Voltage (208, 220, 230, 240/24VAC) 50/60Hz 50VA

11 816-0217 Paper, Insulating

12 810-1164 Block, Terminal

13 809-0354 Screw, 4-40 x ¾-inch Round Slot Head

14 809-0237 Nut, 4-40 Keps Hex

15 900-5530 Cover, Filter Box

16 810-0044 Plug, .875 Button

* Not illustrated.

NOTE: See Page 4-32 for associated wiring assemblies.

4-30

4.4.3 Transformer Box Components

7 5

109

17 18 19

BIH152

109

17 18 19

21 22

25 26

34 35

36 15 16

17 18 19

20 21 22

MH152 (CE)

BIH352/MH352

BIH452/MH452 (CE)

BIH452/MH452

BIH352/MH352 (CE)

37 18 19

MH152

BIH252/MH252

BIH252/MH252 (CE)

14 15 16

109

1312

14 15 16

1312

20 21 22

4-31

ITEM PART # COMPONENT

1Transformer (for use in BIH152 units)

807-1238 100/24VAC 50 Hz

807-0800 120/24VAC 50/60 Hz

2 807-0855 Transformer, 120/12VAC 50/60 Hz (for use in BIH152 units)

3 807-0012 Relay, 18 Amp 24VDC Coil

4 807-0273 Block, 16-Pin Terminal

5 807-1612 Clamp, ⅜-inch Strain Relief

6 807-0255 Jumper, Double

7 810-0045 Bushing, .875-inch Diameter

* 809-0362 Screw, 8-32 x 1-inch Hex Slotted Washer Head (for mounting Items 1-4)

8 900-5560 Shield, BIH152 Transformer

9 807-1683 Relay, 15 AMP 12VDC Coil

10 809-0103 Screw, 8-32 x ½-inch Slotted Truss Head

11 809-0050 Nut, 8-32 Hex

12 Transformer (for use in MH152 and BIH252/352/452/552 units)

807-2176 100-120/24VAC (used in U.S., Japanese, and Korean units)

807-1999 208-240/24VAC (used in CE and most export units)

13 809-0360 Screw, 8-32 x ⅜-inch Slotted Hex Washer Head

14 807-1973 Block, 4-Post Threaded Terminal (used in Non-CE units)

15 809-0131 Screw, ¼-20 x ¾-inch Hex Head

16 809-0071 Nut, ¼-20 Hex

* 809-0052 Nut, 10-24 Hex (for use on Item 14 and Item 36 terminal posts)

17 810-1163 Block, 3-Position Push-In Terminal (used in CE units)

18 809-0354 Screw, 4-40 x ¾-inch Slotted Round Head

19 809-0237 Nut, 4-40 Keps Hex

20 807-0070 Terminal, Lug

21 809-0103 Screw, 8-32 x ½-inch Slotted Truss Head

22 809-0247 Nut, 8-32 Keps Hex

23 900-2697 Box, MH152 Transformer

24 900-2708 Cover, MH152 Transformer Box Top

25 900-2703 Cover, MH152 Transformer Box Left

26 900-2709 Cover, MH152 Transformer Box Right

27 826-1374 Screw, #10 x ½-inch Self-Tapping Slotted Hex Washer Head (Pkg of 25)

28 900-5924 Box, BIH252/MH252 Transformer

29 900-5927 Cover, BIH252/MH252 Transformer Box Top

30 900-5928 Cover, BIH252/MH252 Transformer Box Left

31 900-5923 Cover, BIH252/MH252 Transformer Box Right

32 900-5925 Box, BIH352/MH352 Transformer Box

33 900-5929 Cover, BIH352/MH352 Transformer Box Top

34 900-5928 Cover, BIH352/MH352 Transformer Box Left

35 900-5930 Cover, BIH352/MH352 Transformer Box Right

36 807-2608 Block, 8-Post Threaded Terminal (used in Non-CE units)

37 810-1162 Block, 4-Position Push-In Terminal (used in CE units)

38 900-5926 Box, BIH452/MH452 Transformer

39 900-5931 Cover, BIH452/MH452 Transformer Box Top

40 900-5932 Cover, BIH452/MH452 Transformer Box Left

41 900-5930 Cover, BIH452/MH452 Transformer Box Right

* Not illustrated.

4-32

4.4.5 Wiring

Filter Box Wiring

ITEM PART # COMPONENT

1 806-8021 120V U.S. and 100/120V Non-CE Export Upper 9-Pin Plug Assembly

2 806-7494 120V U.S. Lower 9-Pin Plug Assembly

3 806-6725 230V CE Upper 9-Pin Plug Assembly

4 806-6719 100/120V Non-CE Export and 230V CE Lower 9-Pin Plug Assembly

5 810-1062 Cable, Filter Box Lower 9-Pin Plug to 807-2001 15-Pin (C2) Connector

6 807-2001 Cable, 810-1062 C2 Connector to Component Box Terminal Block

* 806-6728 Pump Motor to Filter Box Wiring Assembly

* WIR0287 120V U.S. Filter Box Internal Wiring

* WIR0233 100-250V CE and Non-CE Export Filter Box Internal Wiring

* Not illustrated.

Gas Valve Wiring

ITEM PART # COMPONENT

1 806-3941 Harness, Full Vat Gas Valve

2 806-3940 Harness, Dual Vat Gas Valve

3 806-9678 Plug Assembly, CE Gas Valve

4-33

Main Wiring Harnesses

U.S. and Non-CE harness (shown)

has two unterminated wires.

Unterminated wires.

CE harness has two unterminated

wires plus two additional wires with

push-on terminals.

ITEM PART # COMPONENT

807-1978 U.S. and Non-CE Export MH/BIH52 Main Wiring Harness

807-2168 CE MH/BIH52 Main Wiring Harness

Power Cords

ITEM PART # COMPONENT

1 806-9786 3-Wire without Plug, 450V (Non-CE Export)

2 806-5332 3-Wire with 3-Prong Molded Plug, (U.S., CE, and Non-CE Export)

3 806-6083 5-Wire with 4-Prong Twist-Lock Plug, 120V (U.S. and Non-CE Export)

4 807-1871 3-Wire with 3-Prong Twist-Lock Plug, 125V (Mexico and South America)

5 806-9285 3-Wire with 3-Prong Twist-Lock Plug, 250V (Far East and Pacific Rim)

6 807-1696 3-Wire with 3-Pin Sleeved Plug, 230V (CE)

* 807-1560 Strain Relief

* Not illustrated.

4-34

Transformer Box Wiring

806-8706 BIH252/MH252

Left Position (U.S. and Non-CE Export)

(Typical)

ITEM PART # COMPONENT

1Plug and Wire Assembly, Transformer Box 9-Pin Female

806-6077 MH152 (U.S. and Non-CE Export)

806-6597 MH152 (CE)

806-8706 BIH252/MH252, Left Position (U.S. and Non-CE Export)

806-8707 BIH252/MH252, Right Position (U.S. and Non-CE Export)

806-8719 BIH252/MH252, Right Position (CE)

806-8720 BIH252/MH252, Left Position (CE)

806-8708 1BIH352/MH352, Left Front Position (U.S. and Non-CE Export)

806-8709 2BIH352/MH352, Left Rear Position (U.S. and Non-CE Export)

806-8710 3BIH352/MH352, Right Position (U.S. and Non-CE Export)

806-8718 4BIH352/MH352, Right Position (CE)

806-8721 5BIH352/MH352, Left Front Position (CE)

806-8722 6BIH352/MH352, Left Rear Position (CE)

806-8723 BIH452/MH452, Right Front Position (CE)

Internal Wiring Bundles

* WIR0288 100-240V BIH152 (U.S., CE, and Non-CE Export)

* WIR0109 100-240V MH152 (U.S. and Non-CE Export)

* WIR0100 7100-240V BIH252/MH252 (U.S. and Non-CE Export)

* WIR0101 8100-240V BIH352/MH352 (U.S. and Non-CE Export)

* WIR0102 100-240V BIH452/MH452 (U.S. and Non-CE Export)

* WIR0144 230V MH152 (CE)

* WIR0141 9230V BIH252/MH252 (CE)

* WIR0142 10 230V BIH352/MH352 (CE)

* WIR0143 230V BIH452/MH452 (CE)

* Not illustrated.

NOTES:

1. Also used in Left Front Position of BIH452/MH452 (U.S. and Non-CE Export)

2. Also used in Left Rear Position of BIH452/MH452 (U.S. and Non-CE Export)

3. Also used in Right Rear Position of BIH452/MH452 (U.S. and Non-CE Export)

4. Also used in Right Rear Position of BIH452/MH452 (CE)

5. Also used in Left Front Position of BIH452/MH452 (CE)

6. Also used in Left Rear Position of BIH452/MH452 (CE)

7. Also used in BIH552 (U.S. and Non-CE Export)

8. Also used in BIH552 (U.S. and Non-CE Export)

9. Also used in BIH552 (CE)

10. Also used in BIH552 (CE)

4-35

4.5 Oil Handling System Components

4.5.1 Drain System Components

Square Drain Sections and Seal Components

910 12

13 15

67 8

Dual Vat Components

Full Vat Components

16 17

ITEM PART # COMPONENT

1 KIT-0257SP Clamp Assembly and Seal Kit

2 816-0420 Seal (Rubber Boot)

3 806-6374SP Clamp Assembly

4 823-2199 Dual Vat Left End Outer Section (4.12-inches/10.5 cm)

5 823-2193 Dual Vat Left End Inner Section (3.57-inches/9.1 cm)

6 823-2204 Dual Vat Outlet Section with 1 Bracket (11.55-inches/29.3 cm)

7 823-2192 Dual Vat Outlet Section with 2 Brackets (11.55-inches/29.3 cm)

8 823-2202 Dual Vat Drain Section with 2 Brackets (11.55-inches/29.3 cm)

9 823-2211 Dual Vat Closed Outlet Section with 1 Bracket (15.86-inches/40.3 cm)

10 823-2210 Dual Vat Closed Outlet Section with 2 Brackets (15.86-inches/40.3 cm)

11 823-2212 Dual Vat Right End Inner Section (3.57-inches/9.1 cm)

12 823-2194 Dual Vat Right End Outer Section (4.12-inches/10.5 cm)

13 823-2200 Full Vat Outlet Section with 2 Brackets (23.38-inches/59.4 cm)

14 823-2207 Full Vat Outlet Section with 3 Brackets (23.38-inches/59.4 cm)

15 823-2233 Full Vat Drain Section with 1 Bracket (15.39-inches/39.1 cm)

16 823-2197 Full Vat Left End Section (7.95-inches/20.2 cm)

17 823-2198 Full Vat Right End Section (7.95-inches/20.2 cm)

* 810-1372 Elbow, 90º Vent Tube (used with Items 4 and 16)

* Not illustrated.

NOTE: Item 5 is always used left of outlet section; Item 11 is always used right of outlet section.

4-36

Compression Washers

NOTE: Concave side of

washers must be mounted

face-to-face.

14b

1312

16 17

17 17

25 26

31 31

Dual Vat Valves

Detail of Valve

Each valve ships with these parts.

Replacement locknuts are available as

separate items.

Locknut

Steel Flat Washer

Plastic Washer

Drain Valves and Associated Components

14a

Full Vat Valves

4-37

ITEM PART # COMPONENT

1 810-1569 Valve, Full Vat 1.25-inch Drain (for use on MH52 units. See NOTE.)

2 810-1018 Valve, Full Vat 1.25-inch Drain (for use on BIH52 units)

3 810-1114 Valve, Dual Vat 1-inch Drain (for use on BIH52 units)

4 810-1338 Valve, Dual Vat 1-inch Drain (for use on MH52 units)

5 807-2103 Switch, Drain Safety (for use on Full Vat BIH52 units)

6 807-2104 Switch, Drain Safety (for use on Dual Vat BIH52 units)

7 816-0135 O-Ring (for use with Items 2 and 3)

8 806-8137 Bracket, Full Vat Drain Safety Switch

9 806-8194 Bracket, Left Dual Vat Drain Safety Switch

10 806-8195 Bracket, Right Dual Vat Drain Safety Switch

11 900-2841 Cover, Full Vat Drain Safety Switch

12 901-2348 Cover, Left Dual Vat Drain Safety Switch

13 902-2348 Cover, Right Dual Vat Drain Safety Switch

14a 900-2354 Bracket, Full Vat Drain Valve

14b 900-2355 Bracket, Dual Vat Drain Valve

15 816-0220 Insulation, Drain Safety Switch

16 809-0237 Nut, 4-40 Keps Hex

17 809-0539 Nut, ⅜-inch 2-Way Lock

18 809-0540 Nut, ½-inch 2-Way Lock

19 823-2371 Handle, Non-CE Full Vat BIH52 Drain Valve

20 810-0677 Grip, Handle

21 900-2521 Handle, CE Full Vat BIH52 Drain Valve

22 814-0047 Sleeve, Handle

23 810-1568 Handle with Lock, Drain Valve (for Full or Left Dual Vat MH52 Valve)

24 810-1569 Handle with Lock, Drain Valve (for Right Dual Vat MH52 Valve)

25 823-2360 Handle, Non-CE Dual Vat BIH52 Left Drain Valve

26 823-2361 Handle, Non-CE Dual Vat BIH52 Right Drain Valve

27 900-2509 Handle, CE Dual Vat BIH52 Left Drain Valve

28 901-5713 Handle, CE Dual Vat BIH152 Left Drain Valve

29 900-2503 Handle, CE Dual Vat BIH52 Right Drain Valve

30 902-5713 Handle, CE Dual Vat BIH152 Right Drain Valve

31 826-1382 Wingnut

32 900-2936 Retainer, Drain Valve ½-inch Nut

33 900-2934 Retainer, Drain Valve ⅜-inch Nut

34 810-1165 Washer, Teflon

NOTE: Item 1 includes Handle, 810-1568 (Item 23).

4-38

4.5.2 Filtration System Components

Base Assembly 806-8804SP

(Used on Japanese/Far East Units)

Base Assembly 806-8648SP

(Used on units built August 1997 and later.)

Base Assembly 106-0043SP

(Replaces Base Assembly 806-5985 used

on units built prior to August 1997)

NOTE: Items 1, 2, 3, and 4 are shown

assembled to base assemblies for

illustrative purposes. However, Base

Assemblies 106-0043SP, 806-8804SP,

and 806-8848SP do not include Items

1, 2, 3, and 4. These items must be

ordered separately.

Items 8 and 9 are used on all three

base assemblies.

15 16

NOTE: These types of base sides are no longer available.

They must be replaced with Items 13 and 14. Handles and

screws used with these base sides remain available.

Filter Base Assemblies and Component Parts

NOTE: These types of base sides are no

longer available. They must be replaced with

Items 13 and 14.

18 Lock bracket used on units

built before August 1997.

4-39

NOTE: In September 1999, significant changes were made to the design of the filter base

assemblies used in BIH52 fryers. The most visible change was the removal of the casters on all

assemblies except 806-8804SP (which is used in units manufactured for sale primarily in Japan).

The motor cover was also redesigned and a lower plumbing shield was added. Additionally, the

two-piece motor support (P/Ns 900-7469 and 900-7470) was replaced with a single, stronger

support.

In order to provide continued support for units built prior to August 1997, a new filter base assembly

with casters (P/N 106-0043SP) was created to replace the original 806-5895 filter base assembly,

which is no longer available.

Two additional modifications to the design of the base sides have been made since August 1997.

These include the replacement of the die-cast metal handles with handles formed into the sides, and

the replacement of the separate lock brackets with brackets that are also formed into the sides.

ITEM PART # COMPONENT

1 900-5477 Cover, Motor (September 1999 and later) (used with all three assemblies)

* 824-0558 Cover, Motor (Prior to September 1999)

2 900-1949 Standoff, Filter Wiring Box (used with all three assemblies)

3 900-7557 Cover, Suction Tube (used with all three assemblies)

4 900-9634 Shield, Filter Plumbing (used with all three assemblies)

5 810-0949 Caster, 2.5-inch Swivel (also used in original 806-5985 assembly)

6 806-9153 Side, Left Filter Base (used in 106-0043SP)

7 806-9150 Side, Right Filter Base (used in 106-0043SP)

8 823-2289 Support, Filter Pan (used in all three filter base assemblies)

9 900-5396 Support, Filter Motor (used in all three filter base assemblies)

10 826-1374 Screw, #10 x ½-inch Washer Hex Head (Pkg of 25)

11 810-0180 Handle, Plated Die-cast Metal

12 826-1360 Screw, 10-24 x 5/16-inch Round Slotted Head (Pkg of 25)

13 201-0757 Side, Left Filter Base (used in 806-8648SP)

14 202-0757 Side, Right Filter Base (used in 806-8648SP)

15 806-9154 Side, Left Filter Base (used in 806-8804SP)

16 806-9151 Side, Right Filter Base (used in 806-8804SP)

17 810-1211 Caster, BIH52 Rigid (used in 806-8804SP only)

18 900-1953 Bracket, Filter Lock (used on base assemblies prior to September 1999)

* 809-0440 Nut, 5/16-inch Keps Hex (used for securing casters to base assemblies)

* Not illustrated.

4-40

Filter Motor and Pump Plumbing

Standard BIH52 Filter Motor and Pump

September 1999 and Later

Standard BIH52 Filter Motor and Pump

Prior to September 1999

2022

BIH152 Filter Motor and Pump

4-41

ITEM PART # COMPONENT

1 826-1261 Pump, 4 GPM (15 LPM) (comes with Gasket 816-0093)

2Motor and Gasket Kit, Multi-Voltage

826-1721 100-120VAC (replaces earlier kits 826-1260, -1263, and -1268)

826-1713 200-250VAC (replaces earlier kits 826-1262, -1266, -1269, and -1270)

3 807-2484 Valve, Solenoid Vent

4 810-1404 Flexline, Oil Return (pump to rear manifold)

5 810-1373 Flexline, Pump Bypass

6 806-9437 Flexline, 15½-inch (39.5cm) Oil Return (See NOTE below)

7 813-0165 Elbow, ½-inch x 90º Street

8 813-0530 Tee, ½-inch x ¼-inch x ½-inch Reducing

9 813-0537 Nipple, ¼-inch x 2-inch

10 813-0543 Elbow, ¼-inch x 90º Street

11 813-0265 Nipple, ½-inch x 2½-inch

12 813-0460 Nipple, ½-inch x 3-inch

13 813-0304 Bushing, ½-inch to ¼-inch Reducing

14 813-0331 Elbow, ½-inch 3-way

15 810-1159 Flexline, 7½-inch Oil Return

16 Hose, Heated Oil Return

810-0945 100-120VAC

810-1037 208-250VAC

17 900-1958 Support, Oil Return

18 810-1003 Valve, 180º 3-way Ball

19 813-0022 Nipple, ½-inch x Close

20 813-0062 Elbow, ½-inch x 90º

21 813-0098 Nipple, ½-inch x 6½-inch

22 813-0087 Nipple, ½-inch x 1½-inch

23 900-5543 Mount, Motor

24 809-0131 Screw, ¼-20 x ¾-inch Hex Head

25 809-0191 Washer, ¼-inch Lock

26 809-0071 Nut, ¼-20 Hex

* 806-6728 Wiring Assembly, Pump Motor to Filter Box

* 816-0093 Gasket, Pump Motor

*Thermal Switch

807-1600 Baldor Motor, 120VAC

807-1601 Baldor Motor, 240VAC

807-1598 Magnatek Motor, 120VAC

807-1599 Magnatek Motor, 240VAC

* Not illustrated.

NOTE: Item 6 consists of 13-inch Flexline 810-1057 and two ⅞-inch to ½-inch Male Adapters

810-1668, which may be ordered as separate items.

4-42

Filter Pan Assemblies and Associated Components

1 2

10 10

4-43

ITEM PART # COMPONENT

1Pan Assembly, Filter (has screen alignment pins in pan bottom)

806-6423SP Standard

806-7377SP For use on Japanese/Far East (JBIH52) units.

2† 806-5618SP Pan Assembly, Filter (has no screen alignment pins in pan bottom)

3Cover, Filter Pan

823-2027 For use with 806-6423SP and 806-5618SP assemblies.

823-2321 For use with 806-7377SP units (has lower splash guard than 823-2027)

4 810-1405 Ring, Hold Down (for use with 806-6423SP and 806-7377SP assemblies)

5 810-1408 Ring, Hold Down (for use with 806-5618SP assembly)

6 900-8818 Screen, Sana Grid (9 x 17-inch/23 x 43cm, has alignment holes)

7 900-8819 Screen, Sana Grid (12 x 19.5-inch/30.5 x 49.5cm, has no holes)

8 823-2234SP Pan, Filter (has screen alignment pins in pan bottom)

9† 823-1979SP Pan, Filter (has no screen alignment pins in pan bottom)

10 809-0422 Screw, 10-32 x 7/16-inch Slotted Truss Head

11 810-1387 Retainer, Check Valve

12 900-5448 Strainer, Check Valve

13 810-0946 Spring, Check Valve

14 810-0948 Ball, Check Valve

15 810-1388 Tube, Check Valve

16 816-0181 O-Ring, Check Valve

17 823-2586 Cover, Filter Pan (for use with 823-2575SP)

18 824-0430 Screen, Crumb (used with 806-5618SP, 806-6423SP, and 806-7377SP)

19 823-2574 Ring, Hold Down (for use in 823-2575SP)

20 900-8829 Screen, San Grid (10 x 9-inch/23 x 25cm, for use in 823-2575SP)

21 823-2575SP Pan, Filter (for use in BIH152 units)

22 823-2578 Bracket, BIH152 Oil Return

23 810-0697 Disconnect, Male

24 826-1392 O-Ring, BIH152 Oil Return (Pkg of 5)

* 826-1490 Kit, Filter Pan Check Valve Service (consists of Items 11 through 16)

† Used on some early-production Japanese/Far East (JBIH52) units only.

* Not illustrated.

4-44

See Page 8-35 for Square

Drain components

Right Handle and Switch Assembly

(All components except for Items 4 and 14

are the same for Left Handle and Switch

Assembly)

Rear Flush Oil Return Components

Right Oil Return Valve Assembly

(All components except for Items 4 and 5

are the same for Left Oil Return Valve

Assembly)

Nut (furnished

with Item 8)

6 7

TYPICAL CONFIGURATION

(BIH252 Full Vat Left /Dual Vat Right shown)

4-45

ITEM PART # COMPONENT

1 807-2484 Valve, Solenoid Vent

2 810-1372 Elbow, 90º x ¼-inch NPT x ⅜-inch Tube

3 809-0601 Clip, Rod End Clevis

4Shaft, Rear Flush Valve

810-1767 For use in left oil return valve assemblies (see illustration below).

810-1766 For use in right oil return valve assemblies (see illustration below).

5Handle, Rear Flush Valve

901-2772 For use in left oil return valve assemblies.

902-2772 For use in right oil return valve assemblies.

6 813-0165 Elbow, 90º x ½-inch Street

7 813-0022 Nipple, ½-inch Close

8 810-0278 Valve, ½-inch Ball

9 806-9828SP Flexline Assembly, 9-inch Oil Return

10 813-0469 Cap, ½-inch Pipe

11 810-1360 Manifold, BIH252 Rear Flush Oil Return

12 810-1357 Manifold, BIH352 Rear Flush Oil Return

13 810-1378 Manifold, BIH452 Rear Flush Oil Return

14 Cover, BIH52 Rear Flush Oil Return Microswitch

901-2214 For use in left handle and switch assemblies.

902-2214 For use in right handle and switch assemblies.

15 809-0237 Nut, 4-40 Keps Hex

16 807-2103 Microswitch

17 810-1186 Cam, Filter System Microswitch

18 809-0414 Setscrew, 10-32 x ¼-inch

19 816-0220 Insulation, Microswitch

20 Handle, Rear Flush

823-2295 For use in Non-CE applications (see illustration below).

823-2259 For use in CE applications only (see illustration below).

21 812-1253 Cover, Rear Flush Handle

NOTE: Left and right refer to the fryer as viewed from the front when facing the fryer.

Shaft 810-1767

(Note orientation of flat

and 45° angle to left.)

Shaft 810-1766

(Note orientation of flat

and 45° angle to right.)

Full Vat or

Left Side of Dual Vat Right Side of Dual Vat

Handle 823-2295

(Note orientation of slot)

This handle is used in

non-CE applications.

NOTE: Handles are shown in

Valve OPEN/Filter ON position.

Handle 823-2259

(Note orientation of slot)

This handle is used in

CE applications.

McD H52 Service Manual Cover MH52 819 5423 Apr 02

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