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JDF-2S, JDF-4S
JDF-4D, JDF-4SB

SERVICE & REPAIR MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644

To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts
Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at
www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and
manual updates. For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.
49179.0000C 02/14 ©2013 Bunn-O-Matic Corporation

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers
and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor.
2) All other equipment - 2 years parts and 1 year labor plus added warranties as specified below:
a) Electronic circuit and/or control boards - parts and labor for 3 years.
b) Compressors on refrigeration equipment - 5 years parts and 1 year labor.
c) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis - parts
and labor for 4 years or 40,000 pounds of coffee, whichever comes first.
These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be
commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the
applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured
by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation,
improper maintenance or repair, non periodic cleaning and descaling, equipment failures related to poor water quality,
damage or casualty. In addition, the warranty does not apply to replacement of items subject to normal use including but
not limited to user replaceable parts such as seals and gaskets. This warranty is conditioned on the Buyer 1) giving BUNN
prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Office
Box 3227, Springfield, Illinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an
authorized BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under
warranty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN are not authorized to make
modifications to this warranty or to make additional warranties that are binding on BUNN. Accordingly, statements by such
individuals, whether oral or written, do not constitute warranties and should not be relied upon.
If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts and/or labor (during the
applicable parts and labor warranty periods specified above) to repair the defective components, provided that this repair
is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for
the equipment.
THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS
EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S SOLE OPTION
AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.
In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of
use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities
or services, or any other special, incidental or consequential damages.
392, A Partner You Can Count On, Air Infusion, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with
the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design,
Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet
Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment
Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com,
Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality
in Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, Velocity Brew, Air Brew, Beverage Bar Creator, Beverage
Profit Calculator, Brew better, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital Brewer Control, Element, Milk Texturing Fusion, Nothing Brews Like a BUNN, Pouring Profits, Signature Series, Sure Tamp, Tea
At Its Best, The Horizontal Red Line, Ultra are either trademarks or registered trademarks of Bunn-O-Matic Corporation.
The commercial trifecta® brewer housing configuration is a trademark of Bunn-O-Matic Corporation.

49179 070913

INTRODUCTION
Safety first!
To avoid electrical shock, unplug dispenser from power source before servicing inside.
Basic Maintenance
In order to maintain proper machine operation, a Preventative Maintenance schedule must be performed on a
regular basis.
The following procedures pretain to all versions in the JDF family of machines unless otherwise noted.

CONTENTS

Warranty....................................................................................................................................2
User Notices..............................................................................................................................3
Site Preparation ........................................................................................................................3
Preventive Maintenance
Recommended Daily Cleaning ............................................................................................4
Preventive Maintenance Schedule........................................................................................5
Troubleshooting.........................................................................................................................6
Service.....................................................................................................................................12
Electrical Schematics...............................................................................................................50

USER NOTICES
All notices on this equipment are written for your protection. All notices are to be kept in good condition.
Replace any unreadable or damaged labels.

SITE PREPARATION

A minimal clearance is required between the dispenser sides and the wall or another appliances.For optimum
performance, do not allow warm air from surrounding machines blow on the JDF dispenser. Leave some space
so the dispenser can be moved for cleaning.

49179 110613

Recommended Daily Cleaning Instructions
The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic
equipment. Do NOT clean this equipment with a water jet device.

1. Open dispenser door. Lift up on 2. Close door, place an empty con- 3. Dispense from each station unproduct containers to discontil clear water flows from the
tainer under the dispense noznect them from the machine inzles.
dispense nozzle.
let.

4. Open dispenser door and recon- 5. Remove dispense nozzles and 6. With a warm/soapy cloth, wipe
nect all product containers.
drip tray. Wash all parts in warm
down interior of cabinet and
soapy water.
splash panel area behind dispensing nozzles.

7. Replace drip tray and dispense
nozzles.

8. Dispense from each station until finished product flows from
the dispense nozzles.

49179 110613

REQUIRED REGULAR MAINTENANCE:
When performing Daily-Weekly Cleaning procedures, inspect o-rings, seals, and bushings for signs of wear or
damage and replace immediately.
Check and/or replace every 6 months or as required:
39690.0000
Pump Tube Replacement Kit (Includes items indented below)
28755.1011 Tube, Norprene .25" ID x 17.0" lg
32732.0000 Clamp .39"/.48"
32656.0000 Fitting, Elbow .25" Barb x .38" Barb
21275.0003 Clamp .57"/.70"
34325.0032 Hose, Flex .38" ID x 5.25" lg

49179 110613

TROUBLESHOOTING
A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems
encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic
Technical Service Department.
•
•
•
•
•
•
•

Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.
All electronic components have high voltage ac and low voltage dc potential on their terminals. Shorting of
terminals or the application of external voltages may result in board failure.
Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If
an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a
terminal or crimp.
Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are
energized for more than ten minutes without a supply of water.
The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will
help to avoid twists and kinks in the tubing.
Make certain that all plumbing connections are sealed and electrical connections tight and isolated.
This unit is heated at all times. Keep away from combustibles.

WARNING – •
•
•
•
PROBLEM

Exercise extreme caution when servicing electrical equipment.
Unplug the dispenser when servicing, except when electrical tests are specified.
Follow recommended service procedures
Replace all protective shields or safety notices
PROBABLE CAUSE

1. Cabinet cooling fan.
Cold Water Circulation
Dispense stations not working.
Note: Cooling failure or excessive
cabinet temperatures for more than 4
hours will result in dispense lockout 2. Bath recirculation pump.
or no dispense.
Note: Reset fault/timer by unplugging unit.

REMEDY
Replace fan (24vdc).
Note: Fan receives power when the
dispenser is powered.
A) If not running, check refrigeration
switch and wiring for proper continuity.
B) Check for 120V or 230V AC at
pump. Replace pump.

3. Restricted water flow to cabinet Check for kinked hose.
water coil and bath.

49179 110613

TROUBLESHOOTING (Continued)
PROBLEM

PROBABLE CAUSE

1. Compressor ON/OFF switch.
Refrigeration
Dispense stations not working.
Note: Cooling failure or excessive
bath and cabinet temperatures for 2. Dirty condenser filter or fins.
more than 4 hours will result in dispense lockout or no dispense.
3. Condenser fan not running.

REMEDY
Check for "ON" position or no continuity - replace switch.
Clean filter and fins or replace condenser filter. (Filter not supplied on
some machines).
A) Check for 120V or 230V AC. Replace fan motor or check fan blades
for obstructions.
B) Check compressor LED on circuit
board. If ON, relay coil should have
power (120 or 230 VAC).

4. Compressor relay not activating. Check compressor relay coil for 120
or 230vac.
NOTE: Always check power with
coil attached. If compressor LED is
ON and no 120 or 230vac - replace
board. If yes, 120 or 230vac - replace
relay.
Note: Relay contacts are normally
open.
5. Compressor not running.

Check compressor thermal overload
(N/C). If open check for dirty condenser filter or adequate ventilation
and space around machine.

6. Compressor running and not Check refrigeration system for leaks
cooling.
and proper charge.
Dispenser Locked Out
Dispense stations not working.

1. Check Dispense Lockout switch.

(A) Set switch to ON position.
(B) Check switch and harness for
proper continuity.

Cooling system failure.

1. Refrigeration or cold water recir- Check all previous items that pretain
culation system.
to refrigeration or cold water recirculation

49179 110613

TROUBLESHOOTING (Continued)
PROBLEM

PROBABLE CAUSE

Dispense station not working

1. Dispense Lockout switch set to Place switch in ON position.
OFF position.
2. Dispense switch failed

All stations dispense concentrate Main water supply
only
Frozen bath

REMEDY

Check switch and harness for proper
continuity.
Check for ON position.
A) Compressor relay/contacts shorted - replace relay.
B) Recirculating pump - replace or
check for kinked flex line.

Inlet water valve failed

A) Check for 120V or 230V power
when dispensing. If yes, replace
valve. If no, check harness for proper
continuity. Then replace circuit board
if needed.

49179 110613

TROUBLESHOOTING (Continued)
PROBLEM

PROBABLE CAUSE

REMEDY

Dispense station
concentrate only

Water solenoid

Replace solenoid (24vdc) or check
wire connection between water valve
and main control board.

Dispense station
water only

Concentrate out

Replace refill concentrate container
or BIB

Product pump not pumping

Check for proper counterclockwise
rotation of pump rollers. If counterclockwise, replace pump tubing.
If clockwise, wire connection to
pump is reversed. Switch wires on
terminals.

Pump not turning

A) Check speed setting on circuit
board and increase speed (turn
clockwise)
B) Check for d.c. power to pump
motor. If yes, replace motor assy. If
no, check harness for proper continuity. Then replace circuit board if
needed.

49179 110613

TROUBLESHOOTING (Continued)
PROBLEM

PROBABLE CAUSE

REMEDY

Water leak filling drip tray or around 1. Initial fill/setup
dispense deck area

Some expansion normal. May fill
drip tray during initial ice block
formation

2. Dispense deck

Inspect or replace fittings clamps,
o-rings, solenoids and quick disconnect fittings.
NOTE: Dispense deck area slopes
to drain tube that leads to the drip
tray.

3. Water pressure greater than Install water pressure regulator and
100psi
reduce to 50 psi.
Water leaking beneath machine

1. Bath tank overflow.

A) Check all internal water connections.
B) Check internal plumbing connections.

2. Condensation from cabinet cool- Check for routing of condensation
ing coil.
tube to water bath.
Erratic spray during dispense

Dispense nozzle mixer missing or Replace mixer.
broken

Dispense nozzle dripping water

Dispense solenoid.

Replace dispense deck solenoid.

49179 110613

TROUBLESHOOTING (Continued)
PROBLEM

PROBABLE CAUSE

REMEDY

Unit is not working

1. Step-down transformer.

Check for 120/24 or 230/24 vac. If
no 24vac reading, replace step-down
transformer.

2. Main control board.

If 24 vac present and no LED’s lit,
replace control board..

Difficulty brixing and/or weak bever- 1. Product viscosity or too cold.
age

Thorough thaw of product before use
(35° - 40°)

2. Low water pressure.

Maintain 20 psi or higher and a minimum flow rate of 1 fl oz/sec.

3. High water pressure.

Over 100 psi, install a pressure regulator and set to 50 psi.

4. Dispense valve adjustment set- A) Perform 3 second water dispense
ting.
test. Factory setting is 1.0 oz/sec.
Acceptable water flow rate is .-0.8
to 1.5 oz/sec depending on the mix
ratio (4+1).
B) Adjust water to proper mix ratio.
Once water is set, adjust motor speed
to achieve brix %.
5. Brix ratio.

Check for proper brix ratio per product using Total Dispense method and
or refractometer method.

Difficulty brixing and/or weak bever- 1. Pump tubing.
age

Inspect, clean, or replace tubing
and pump rotor/rollers for ease of
rotation.

2. Use of portable water pump.

A) Follow plumbing requirements for
pressure and flow rate.
B) Source another portable pump
or water supply that meets requirements.

Difficulty brixing bag-in-box

Vacuum leak

Inspect all lines and connections
from bag-in-box connector to bottle
adapter assembly.

49179 110613

SERVICE

This section provides procedures for testing and replacing various major components used in this dispenser
should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any
problem.
WARNING - Inspection, testing, and repair of electrical equipment should be performed only by qualified service
personnel. The dispenser should be disconnected from the power source when servicing, except when electrical
tests are required and the test procedure specifically states to connect the dispenser to the power source.
COMPONENT ACCESS
WARNING - Disconnect the dispenser from the power source before the removal of any panel or the replacement
of any component.
All components are accessible by opening the door, removal of the door panels, dispenser top covers,
hopper(s), hopper support plate, splash guard, splash panel w/drip tray, lower front access panel and rear access cover.
Refer to the contents listing for component location.
INDEX
Access Panels...................................................................................................................................13
Dispense Platform Removal..............................................................................................................14
Ballast...............................................................................................................................................15
Cabinet Fan.......................................................................................................................................16
Compressor......................................................................................................................................17
Compressor Switch...........................................................................................................................23
Condenser Fan..................................................................................................................................24
Control Board (Main)........................................................................................................................25
Control Board (Portion Control Models)...........................................................................................26
Circulation Pump..............................................................................................................................29
Dispense Platform Switch.................................................................................................................30
Dispense Pump.................................................................................................................................31
Dispense Motor.................................................................................................................................32
Dispense Valve..................................................................................................................................33
Dispense Switches............................................................................................................................34
Cold Water Dispense Switch.............................................................................................................35
Dispense Membrane Switches..........................................................................................................36
Cold Water Membrane Switch...........................................................................................................37
EMI Filter...........................................................................................................................................38
Lamp.................................................................................................................................................39
Lamp Holder.....................................................................................................................................39
LED Lamp.........................................................................................................................................40
Rectifier............................................................................................................................................41
Relay.................................................................................................................................................42
Resistor............................................................................................................................................43
Solenoid (Cold Water).......................................................................................................................44
Solenoid (Inlet).................................................................................................................................45
Temperature Probe...........................................................................................................................46
Temperature Sensor..........................................................................................................................47
Transformer......................................................................................................................................48
Transformer-Lited Doors...................................................................................................................49
Circuit Board Triac Map.....................................................................................................................50
Schematic Wiring Diagrams..............................................................................................................51
12

49179 012214

SERVICE(CONT.)
ACCESS PANELS
Location:
All access panels are similar through the whole JDF family (JDF-4S shown). Before removing panels, make
sure power is OFF to the machine and water is disconnected accept where indicated in testing procedures. Retain
all screws and other attaching hardware for re-assembly.
JDF-4S shown

FIG. 1 ACCESS PANELS

49179 110613

SERVICE(CONT.)
DISPENSE PLATFORM REMOVAL
1.
2.
3.
4.
5.
6.

Remove concentrate dispense tips by turning 1/4 turn to the left, then pull straight down.
Lift and remove product shelf to access dispense platform(s).
Remove front thumb screw holding dispense platform(s).
Disconnect 12 pin connector above dispense platform in rear.
Disconnect 3/8” water line at quick disconnect.
Remove dispense platform(s) by pulling forward.

JDF-2S shown

The JDF-4S uses 2 of the two head dispense platforms.
FIG. 2 DISPENSE PLATFORM REMOVAL

49179 110613

SERVICE (CONT.)
5. Remove the wire to the ballast from the back of
each bracket.
6. To disengage the ballast wire from the bracket, push
a 1/16” allen wrench (or equivalent tool) into the
front hole that lines up with the wire in the back.
Pull the wire out.
7. Repeat for each bracket.
8. White jumper must remain in place on the back of
the light socket.
9. Remove screws from each ballast. Remove the green
ground wire from the ballast bracket by removing
the bracket’s bottom screw.
10. Install the single ballast (wires on the bottom) onto
the ballast bracket using 2 of the screws previously
removed.
11. Attach ballast wires to the back of bulb sockets by
pushing wires into holes in back of socket.
Note: Attach black wires to the top sockets, and blue
wires to the bottom sockets. Reference electrical schematic if needed.
12. Snap all 4 bulb sockets back onto light panel. Reinstall fluorescent bulbs.
13. Attach green ground wire to the bottom hole of the
ballast bracket using 1 screw.
14. Plug in 3-pin connector into the door harness.
15. To replace door cover, re-connect the dispense
switch harness to door harness. Fasten with 5
screws.
16. Reconnect power to the unit. Test operation.

Ballast (JDF-2S,4S)
JDF-2S shown

FIG. 3 BALLAST

P1684.40

Location:
The door lamp ballast is located inside the dispenser
door mounted in the center of the door rear cover.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect a black and blue wire from one set of
lamp sockets.
3. Connect an ohmmeter to the end of each wire.
4. Check for continuity between the two wires.
If continuity is present as described, the ballast is
operating properly.
If continuity is not present as described, replace the
ballast.
5. Check for continuity between the other pair of black
and blue wires.
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove door cover by taking out the 5 screws and
unplug the dispense switch harness from the door
harness. Set door cover and screws aside.
3. Disconnect the 3-pin connector from the ballasts
to the door harness.
4. Remove fluorescent bulbs from the brackets. Pull
off the four snap-in light sockets from the light
panel.

FIG. 4 BALLAST TERMINALS
15

P1219

49179 110613

SERVICE (CONT.)
Cabinet Fan (all Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the four screws attaching the fan and cover
assembly.
3. Gently pull the cover forward and disconnect the
2-pin connector from the main wiring harness.
4. Remove the fan from the cover assembly and discard
the old fan.
5. Install the new fan to the cover assembly using
screws previously removed.
6. Reconnect the fan to the 2-pin connector on the
main wiring harness.
7. Install the fan and cover assembly to the cabinet
using screws previously removed.
8. Reconnect power to the dispenser.

JDF-2S shown

FIG. 5 CABINET FAN

P1684.40

Location:
The cabinet fan is located inside the dispenser cabinet
mounted in the center behind the fan guard cover.

RED
2

Test Procedure:
1. Disconnect the dispenser from the power source.
2. Remove the four screws attaching the fan and cover
assembly.
3. Gently pull the cover forward and disconnect the
2-pin connector from the main wiring harness.
4. Check for continuity between the two wires on the
fan.
If continuity is present as described, the fan is operating properly.
If continuity is not present as described, replace the
fan.

BLK

FIG. 6 CABINET FAN TERMINALS

P1219

49179 110613

SERVICE (CONT.)
LG Compressor (JDF-2S,4S,4D)

Test Procedures:
Compressor Relay: Refer to FIG. 8

JDF-4S shown

FIG. 7 COMPRESSOR

1. Disconnect the dispenser from the power source.
2. Remove compressor terminal cover retainer (1).
3. Connect a voltmeter across the white wire and the
blue/black wire. Connect the dispenser to the power
source.
The indication must be:
(a) 120 volts ac for two wire 120 volt models or
(b) 230 volts ac for two wire 230 volt models.
5. Disconnect the dispenser from the power source.
If voltage is present as described, proceed to the following test procedures.
If voltage is not present as described, refer to the Contactor and check the contactor.
6. Disconnect the white wire from the compressor
relay.
7. Remove relay from the compressor.
8. Check for continuity across the terminal and the
pin socket on the rear of the relay.
If continuity is present as described, the compressor
start relay is operating properly.
If continuity is not present as described, replace relay.

P1684.40

Location:
The compressor is located at the top of the dispenser
frame.

Compressor:
1. Remove relay and yhermal overload protector.
2. Check for continuity across the bottom pin on the
compressor and the left top pin on the compressor.
If continuity is present as described, the electrical part
of the compressor is operating properly.
If continuity is not present as described, replace the
compressor.

GRN Wire

Thermal Overload Protector:
1. Check for continuity across the terminals on the
thermal overload protector (3).
If continuity is present as described, the thermal overload protector is operating properly.
If continuity is not present as described, replace the
thermal overload protector.

P4298.20

FIG. 8 COMPRESSOR THERMAL
OVERLOAD PROTECTOR LOCATION
1. Compressor Terminal Cover
2. Compressor Relay
3. Thermal Overload Protector

49179 110613

SERVICE (CONT.)
Compressor (Cont.)
Removal and Replacement:
Compressor Relay: Refer to FIG. 8
1. Remove the terminal cover (1)
2. Disconnect the white wire from the compressor
relay.
3. Pull relay (2) off of the compressor pins and discard.
4. Push new relay onto the compressor pins.
5. Refer to Fig. 9 and reconnect the wires.
6. Reinstall terminal cover (1).

WHI Wire

Compressor Thermal Overload Protector: Refer to
FIG. 8
1. Remove terminal cover (1).
2. Disconnect the BLU/BLK wire of the harness from
the thermal overload protector.
3. Remove relay (2).
4. Remove overload protector (3) and discard overload
protector.
5. Install new overload protector (3) on to the compressor.
6. Install relay (2).
7. Refer to Fig. 10 and reconnect the thermal overload
protector wires.
8. Reinstall terminal cover (1).

FIG. 9 RELAY TERMINALS

Plugs into Relay

BLU/BLK Wire

FIG. 10 THERMAL OVERLOAD PROTECTOR
TERMINALS
6. Install new compressor over the four studs in the
dispenser chassis with the fill valve to the right side
of the dispenser.
7. Secure compressor to the dispenser chassis using
four .25-20 keps nuts and washers.
8. Reconnect tubes from the condenser and the accumulator to the compressor.
9. Reinstall transformer.
10. Evacuate the system.
11. Recharge 120V and 230V system with:

Compressor Assy:
NOTE: Before removal of any refrigeration component
the refrigerant in the system must be reclaimed by a
licensed refrigeration repair person.
NOTE: When replacing the compressor it is recommended that the dryer also be replaced.
1. Disconnect the tubes from the condenser and the
accumulator.
2. Disconnect the compressor wiring harness from
the dispenser main wiring harness.
3. Remove the four .25-20 keps nuts and washers
securing the compressor to the chassis. Set nuts
and washers aside for reassembly.
4. Disconnect and remove the transformer.
5. From the right side of the dispenser lift the compressor assembly over the four studs in the chassis
and remove compressor.

JDF-2S - 9 oz. Type R134A refrigerant.
Design Pressures: High 255 - Low 36 psi
JDF-4S & 4D - 10 oz. Type R134A refrigerant.
Design Pressures: High 335 - Low 88 psi
NOTE: The charging of the system must be done by a
licensed refrigeration repair person.
NOTE: Refer to Wiring Diagrams when reconnecting
wires to Compressor, Thermal Overload Protector and
Start Relay.

49179 110613

SERVICE (CONT.)
GD Compressor (JDF-2S,4S,4D)

Test Procedures:
Compressor Start Relay: Refer to FIG. 12
WARNING: The compressor capacitor must be properly
discharged before proceeding. This is most commonly
done on low voltage capacitors by shorting across the
terminals with a screwdriver.

JDF-4S shown

FIG. 11 COMPRESSOR

1. Disconnect the dispenser from the power source.
2. Remove compressor terminal cover retainer (4).
3. Connect a voltmeter across the white wire and the
blue/black wire. Connect the dispenser to the power
source.
The indication must be:
(a) 120 volts ac for two wire 120 volt models or
(b) 230 volts ac for two wire 230 volt models.
5. Disconnect the dispenser from the power source.
If voltage is present as described, proceed to the following test procedures.
If voltage is not present as described, refer to the Contactor and check the contactor.
6. Disconnect the two black wires from the compressor start relay.
7. Remove relay from the compressor.
8. Check for continuity across the upper left terminal
and the right pin socket on the rear of the relay.
If continuity is present as described, the compressor
start relay is operating properly.
If continuity is not present as described, replace relay.

P1684.40

Location:
The compressor is located at the top of the dispenser
frame.

Compressor:
1. With the compressor start relay (1) removed, disconnect the black wire from the compressor.
2. Check for continuity across the terminal on the
compressor and the left pin on the compressor.
If continuity is present as described, the electrical part
of the compressor is operating properly.
If continuity is not present as described, replace the
compressor.

FIG.12 COMPRESSOR THERMAL
OVERLOAD PROTECTOR LOCATION

P4040.40

1. Compressor Start Relay
2. Wiring Harness Strain Relief
3. Thermal Overload Protector
4. Compressor Terminal Cover

49179 110613

SERVICE (CONT.)
Compressor (Cont.)
Removal and Replacement:
Compressor Start Relay: Refer to FIG. 12
1. Remove the terminal cover (4)
2. Disconnect the wires from the compressor start
relay.
3. Pull relay (1) off of the compressor pins and discard.
4. Push new relay onto the compressor pins.
5. Refer to Fig. 26 and reconnect the wires.
6. Reinstall terminal cover (4).

BLU/BLK
GRN
WHI

FIG. 13 RELAY TERMINALS

Compressor Thermal Overload Protector: Refer to
FIG. 12
1. Remove terminal cover (4).
2. Disconnect the BLU/BLK wire of the harness from
the thermal overload protector.
3. Disconnect the BLK wire from the Compressor’s
upper terminal.
4. Remove overload protector (3) and start relay as
an assembly.
5. Remove overload protector (3) and discard overload
protector.
6. Install new overload protector (3) on to the relay
(1).
7. Install relay (1) and overload protector (2) on the
compressor terminal bracket.
8. Refer to Fig. 27 and reconnect the thermal overload
protector wires.
9. Reinstall terminal cover (4).

Plugs into Relay

FIG. 14 THERMAL OVERLOAD PROTECTOR
TERMINALS
5. From the right side of the dispenser lift the compressor assembly over the four studs in the chassis
and remove compressor.
6. Install new compressor over the four studs in the
dispenser chassis with the fill valve to the right side
of the dispenser.
7. Secure compressor to the dispenser chassis using
four .25-20 keps nuts and washers.
8. Reconnect tubes from the condenser and the accumulator to the compressor.
9. Reinstall transformer.
10. Evacuate the system.
11. Recharge 120V and 230V system with:

JDF-2S - 9 oz. Type R134A refrigerant.
Design Pressures: High 255 - Low 36 psi
JDF-4S & 4D - 10 oz. Type R134A refrigerant.
Design Pressures: High 335 - Low 88 psi

1. Disconnect the tubes from the condenser and the
accumulator.
2. Disconnect the compressor wiring harness from
the dispenser main wiring harness.
3. Remove the four .25-20 keps nuts and washers
securing the compressor to the chassis. Set nuts
and washers aside for reassembly.
4. Disconnect and remove the transformer.

NOTE: The charging of the system must be done by a
licensed refrigeration repair person.
NOTE: Refer to Wiring Diagrams when reconnecting
wires to Compressor, Thermal Overload Protector and
Start Relay.
20

49179 110613

SERVICE (CONT.)
Compressor (JDF-4SB)

Test Procedures:
Compressor Start Relay: Refer to FIG. 16
WARNING: The compressor capacitor must be properly
discharged before proceeding. This is most commonly
done on low voltage capacitors by shorting across the
terminals with a screwdriver.
1. Disconnect the dispenser from the power source.
2. Remove compressor terminal cover retainer (4).
3. Connect a voltmeter across the white wire and the
blue/black wire. Connect the dispenser to the power
source.
The indication must be:
(a) 120 volts ac for two wire 120 volt models or
(b) 230 volts ac for two wire 230 volt models.
5. Disconnect the dispenser from the power source.
If voltage is present as described, proceed to the following test procedures.
If voltage is not present as described, refer to the Contactor and check the contactor.
6. Disconnect the two black wires from the compressor start relay.
7. Remove relay from the compressor.
8. Check for continuity across the upper left terminal
and the right pin socket on the rear of the relay.
If continuity is present as described, the compressor
start relay is operating properly.
If continuity is not present as described, replace relay.

P1684.40

FIG. 15 COMPRESSOR

Location:
The compressor is located at the top of the dispenser
frame.
230V shown
1

FIG. 16 COMPRESSOR THERMAL
OVERLOAD PROTECTOR LOCATION

P4068

1. Compressor Start Relay
2. Wiring Harness Strain Relief
3. Thermal Overload Protector
4. Compressor Terminal Cover
5. Cable 230V only
6. Capcitor 230V only
7. Cover, Capacitor 230V only

49179 110613

SERVICE (CONT.)
Compressor (Cont.)
Removal and Replacement:
Compressor Start Relay: Refer to FIG. 16
1. Remove the terminal cover (4)
2. Disconnect the wires from the compressor start
relay.
3. Pull relay (1) off of the compressor pins and discard.
4. Push new relay onto the compressor pins.
5. Refer to Fig. 16 and reconnect the wires.
6. Reinstall terminal cover (4).

BLU/BLK
GRN
WHI
BLU from Capacitor
BRN from Capacitor

FIG. 17 RELAY TERMINALS

Compressor Thermal Overload Protector: Refer to
FIG. 16
1. Remove terminal cover (4).
2. Disconnect the WHI/ORN wire of the harness from
the thermal overload protector.
3. Disconnect the BLK wire from the Compressor’s
upper terminal.
4. Remove overload protector (3) and start relay as
an assembly.
5. Remove overload protector (3) and discard overload
protector.
6. Install new overload protector (3) on to the relay
(1).
7. Install relay (1) and overload protector (2) on the
compressor terminal bracket.
8. Refer to Fig. 17 and reconnect the thermal overload
protector wires.
9. Reinstall terminal cover (4).

Plugs into Relay

FIG. 18 THERMAL OVERLOAD PROTECTOR
TERMINALS
4. Disconnect and remove the transformer.
5. From the right side of the dispenser lift the compressor assembly over the four studs in the chassis
and remove compressor.
6. Install new compressor over the four studs in the
dispenser chassis with the fill valve to the right side
of the dispenser.
7. Secure compressor to the dispenser chassis using
four .25-20 keps nuts and washers.
8. Reconnect tubes from the condenser and the accumulator to the compressor.
9. Reinstall transformer.
10. Evacuate the system.
11. Recharge 120V and 230V system with:

JDF-4SB - 10 oz. Type R134A refrigerant.
Design Pressures: High 335 - Low 88 psi

49179 110613

SERVICE (CONT.)
Compressor Switch (all Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the cover or splash panel to gain access
to the switch.
3. Gently disconnect the wiring harness from the
switch.
4. Remove the switch from the mounting bracket and
discard.
5. Install the new into the mounting bracket.
6. Reconnect the wiring harness to the new switch.
7. Install covers or panels previously removed.
8. Reconnect power to the dispenser.

JDF-4S shown

P1684.40

FIG. 19 COMPRESSOR SWITCH
Location:
On models JDF-2S and 4S, early models had the switch
located on the back of the dispenser next to the water
inlet. On later models JDF-2S, 4S, 4D and 4SB, the
switch is located on the front left of the dispenser
behind the splash panel.

RED/BLK
BLK

P1219

FIG. 20 COMPRESSOR SWITCH TERMINALS

Test Procedure:
1. Disconnect the dispenser from the power source.
2. Remove the two wires from the switch terminals.
3. Check for continuity across the switch terminals
with the switch in the “ON” position. Continuity
must not be present when the switch is in the “OFF”
position.
If continuity is present as described, reconnect the
wires to the switch terminals.
If continuity is not present as described, replace the
switch.

49179 110613

SERVICE (CONT.)
Condenser Fan (all Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the four screws attaching the fan and cover
assembly to the refrigeration cabinet.
3. Gently pull the cover assembly forward and disconnect the 2-pin connector from the fan to the main
harness.
4. Remove the fan from the cover assembly and discard.
5. Install the new fan onto the cover assembly.
6. Reconnect the wiring harness to the new fan.
7. Install fan and cover assembly using four screws
previously removed.
8. Reconnect power to the dispenser.

JDF-4S shown

P1684.40

FIG. 21 CONDENSER FAN
Location:
The condenser fan is located inside the main frame
below the compressor assembly.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect the 2-pin from the fan to the main wiring
harness.
3. Check for continuity across the fan terminals.

BLU/BLK
WHI

If continuity is present as described, reconnect the
wires to the fan terminals.
If continuity is not present as described, replace the
fan.

P1219

FIG. 22 CONDENSER FAN TERMINALS

49179 110613

SERVICE (CONT.)
Control Board, Main (all Models)
Removal and Replacement:
1. Remove the four #6-32 screws securing the control
board to the component bracket.
2. Disconnect all the plugs on the main wiring harness
from the connectors on the control board.
3. Remove the spacers from the control board and
discard.
4. Install the spacers on to the new control board
5. Reconnect all plugs on the main harness to the
connectors on the control board.
6. Install new control board on the component bracket
using four #6-32 screws.
NOTE: Verify all ground wires are connected to the
grounding stud and secured with nuts.

JDF-4S shown

FIG. 23 CONTROL BOARD

P3250.25

Location:
The Main Control Board is located on the electrical
component enclosure behind the splash panel.
Test Procedure:
Power Supply Circuitry:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, back probe check the voltage
across pins 1 & 3 of the J6 connector on the wiring harness. Connect the dispenser to the power
source. The indication must be 24 volts ac.
3. Disconnect the dispenser from the power source.
If voltage is present as described, proceed to step 4.
If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).

JDF-4S

4. Disconnect the dispenser from the power source.
5. With a voltmeter, back probe check the voltage
across pins 1 & 3 of the J12 connector on the
wiring harness. Connect the dispenser to the power
source. The indication must be 24 volts ac.
6. Disconnect the dispenser from the power source.
If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).

JDF-2S
FIG. 24 CONTROL BOARD CONNECTORS
25

49179 110613

SERVICE (CONT.)
Portion Control Board (JDF-2S,4S)
Removal and Replacement:
1. Remove the five screws securing the door cover to
the door frame.
2. Carefully pull the cover forward and disconnect
all switch harnesses from the connectors on the
control board.
3. Remove the four #6-20 screws securing the control
board to the light panel.
4. Remove the spacers from the control board and
discard the old board.
5. Install the spacers on to the new control board.
6. Install new control board on the light panel using
four #6-20 screws.
7. Position the door cover to the door frame and
reconnect all switch harnesses to the connectors
on the control board.
8. Secure the door cover to the frame with the five
screws previously removed.

P4034.25

FIG. 25 PORTION CONTROL BOARD
Location:
The Portion Control Board is located inside the door
cover mounted on the bracket.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, back probe check the voltage
across pins 1 & 5 of the J6 connector on the wiring harness. Connect the dispenser to the power
source. The indication must be 24 volts ac.
3. Disconnect the dispenser from the power source.

J-8

J-7

If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).

J-9

J-6
J-1
J-2
J-3
J-4
J-5
J-6
J-7
J-8
J-9

Cold Water Switch
Left Left Dispense Switch
Left Middle Dispense Switch
Right Middle Dispense Switch
Right Right Dispense Switch
Main Harness
N/A
N/A
N/A

J-5
J-3

J-4

J-1

J-2

FIG. 26 CONTROL BOARD CONNECTORS

49179 110613

SERVICE (CONT.)
Push Button Control Board (JDF-4D)
Removal and Replacement:
1. Remove the five screws securing the door cover to
the door frame.
2. Carefully pull the cover forward and disconnect
all switch harnesses from the connectors on the
control board.
3. Remove the four #6-20 screws securing the control
board to the light panel.
4. Remove the spacers from the control board and
discard the old board.
5. Install the spacers on to the new control board.
6. Install new control board on the light panel using
four #6-20 screws.
7. Position the door cover to the door frame and
reconnect all switch harnesses to the connectors
on the control board.
8. Secure the door cover to the frame with the five
screws previously removed.

R
WE
PO
NG
OLI
CO

P4081.25

FIG. 27 PUSH BUTTON CONTROL BOARD
Location:
The Push Button Control Board is located inside
the door cover mounted on the bracket.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, back probe check the voltage
across pins 1 & 5 of the J6 connector on the wiring harness. Connect the dispenser to the power
source. The indication must be 24 volts ac.
3. Disconnect the dispenser from the power source.

J-7

J-9

If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).
J-11
J-1
J-6
J-7
J-9
J-10
J-11

J-10

N/A
Main Harness
N/A
Rinse Switch
Dispense Nozzles (Disable)
Dispense Switches

J-6

FIG. 28 CONTROL BOARD CONNECTORS

49179 110613

SERVICE (CONT.)
Portion Control Board (JDF-4D)
Removal and Replacement:
1. Remove the five screws securing the door cover to
the door frame.
2. Carefully pull the cover forward and disconnect
all switch harnesses from the connectors on the
control board.
3. Remove the four #6-20 screws securing the control
board to the light panel.
4. Remove the spacers from the control board and
discard the old board.
5. Install the spacers on to the new control board.
6. Install new control board on the light panel using
four #6-20 screws.
7. Position the door cover to the door frame and
reconnect all switch harnesses to the connectors
on the control board.
8. Secure the door cover to the frame with the five
screws previously removed.

R
WE
PO
NG
OLI
CO

P4081.25

FIG. 29 PORTION CONTROL BOARD
Location:
The Portion Control Board is located inside the door
cover mounted on the bracket.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, back probe check the voltage
across pins 1 & 5 of the J6 connector on the wiring harness. Connect the dispenser to the power
source. The indication must be 24 volts ac.
3. Disconnect the dispenser from the power source.

J-7
J-8

If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).
J-6
J-1
J-2
J-3
J-4
J-5
J-6
J-7
J-8
J-9

Cold Water Switch
Left Left Dispense Switch
Left Middle Dispense Switch
Right Middle Dispense Switch
Right Right Dispense Switch
Main Harness
N/A
N/A
N/A

J-5

J-2

J-3

J-4

J-1

J-9

FIG. 30 CONTROL BOARD CONNECTORS

49179 110613

SERVICE (CONT.)
Circulation Pump (all Models)
Removal and Replacement:
1. Remove dispense platform(s) for ease of taking out
recirculating pump.
2. Remove left and right side panels.
3. Remove silicone condensation hose out of bath
tank along side recirculating pump.
4. Disconnect pump motor and condenser fan wires
(1/4” spade terminals).
5. Remove 2 screws left and right side of the condenser
mounting bracket. Remove condenser fan assembly
out the right side of the machine.
6. Release recirculating pump holding bracket right
side (2 nuts).
7. Lift up on recirculating pump and maneuver out
the right side of the machine
FIG. 31 CIRCULATION PUMP
Location:
The Circulation Pump is located on top of the water
bath tank cover.

RED/BLK to
Compressor Switch
WHI to Transformer

Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter .
If voltage is present as described, proceed to step 4.
If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).

FIG. 32 CIRCULATION PUMP

P3250.25

49179 110613

SERVICE (CONT.)
Dispense Platform Switch (all Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Loosen the two #8-32 screws securing the component mounting bracket to the dispenser base.
3. Disconnect the two black wires from the switch.
4. Press the locking tabs of the old switch and remove
from the component mounting bracket.
5. Press the new switch into the component mounting
bracket.
6. Connect the two black wires to the switch terminals
as shown below.
7. Position the component mounting bracket in the dispenser base and secure with two #8-32 screws.
8. Return power to the dispenser.

JDF-2S shown

FIG. 33 DISPENSE PLATFORM SWITCH

BLK to J5-3

Location:
The Dispense Platform Switch is located below the
dispenser in the front center and is mounted on the
component mounting bracket.

BLK to J5-4

Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, back probe check across the two
black wires on the switch.
3. Return power to the dispenser. The indication must
be 24 volts ac.
4. Disconnect the dispenser from the power source.

P1640

FIG. 34 SWITCH TERMINALS

If voltage is present as described, proceed to step 5.
If voltage is not present as described, refer to the Wiring
Diagrams and check back to the control board, J5.
5. With an ohmmeter, chech for continuity between
the terminals shown in Fig. 34.
Continuity must be present when the switch is in the
ON position.
If continuity is not present, replace the switch.

49179 110613

SERVICE (CONT.)
Dispense Pump (all Models except JDF-4D)
5. Install the new pump tube around the rotor and
position into the rear housing with the clamp resting on the top edge.
6. Install the front housing to be flush with the rear
housing.
7. Position the pump assembly back on the platform
and secure with four #8-32 x 2.45 screws previously
removed.
8. Repeat for remaining pumps.

FIG. 35 DISPENSE PUMP
Location:
The Dispense Pumps are located on the platform
assembly.
Removal, Inspection, and Replacement:
1. Loosen the four #8-32 x 2.45 screws securing the
pump assembly to the platform.
2. Pry the two halves of the pump housing apart to
reveal the pump tube and the rotor.
3. Inspect the pump tubing for signs of wear and
replace every six months or as needed.
4. Inspect the pump rotor for signs of wear and replace
if necessary.

P1640

FIG. 36 DISPENSE PUMP COMPONENTS

49179 110613

SERVICE (CONT.)
Dispense Motor (all Models)
Removal and Replacement:
1. Disconnect the two wires from the dispense motor.
2. Loosen the four #8-32 screws securing the motor
to the platform assembly and remove the motor.
3. Inspect the gasket and rubber bushings for signs
of wear and replace if necessary.
4. Position the new motor into place with the gasket
and bushings onto the platform. Secure with four
#8-32 screws previously removed.
5. Reconnect the two wires to the motor as shown in
Fig. 38.

FIG. 37 DISPENSE MOTOR
Location:
The Dispense Motors are located on the rear of the
platform assembly.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, check the voltage across the two
wire terminals of the motor assembly. Connect the
dispenser to the power source. The indication must
be 24 volts ac.
3. Disconnect the dispenser from the power source.
If voltage is present as described, replace the motor.
If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).

FIG. 38 DISPENSE MOTOR CONNECTORS

49179 110613

SERVICE (CONT.)
Dispense Valve (all Models)
Removal and Replacement:
1. Disconnect the two wires from the dispense
valve.
2. Remove the #6-32 screw and plate securing the
water manifold tube to the valve.
3. Loosen the two #6-32 screws securing the valve
to the platform assembly and remove the valve.
4. Install the new valve onto the platform and secure
with two #6-32 screws previously removed.
5. Inspect the o-ring on the manifold tube connector
for signs of wear and replace if necessary.
6. Connect the water manifold tube to the valve and
secure in place with the plate and #6-32 screw
previously removed.
7. Reconnect the two wires to the valve as shown in
Fig. 40.

FIG. 39 DISPENSE VALVE
Location:
The Dispense Valves are located at the front of the
platform assembly.

Dispense Station
#1 WHI/VIO
Dispense Station
#2 WHI/ORN

Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, check the voltage across the two
wire terminals of the valve solenoid. Connect the
dispenser to the power source. The indication must
be 24 volts ac.
3. Disconnect the dispenser from the power source.

Dispense Station
#3 WHI/VIO
Dispense Station
#4 WHI/ORN
YEL to Control Board

If voltage is present as described, replace the valve.
If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness back
to the transformer (See TRANSFORMER).
P3503

FIG. 40 DISPENSE VALVE CONNECTORS

49179 110613

SERVICE (CONT.)
Dispense Switches (JDF-2S, JDF-4S)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the five screws attaching the dispenser
door cover to the door and move the door cover
to gain access to the switches.
3. Disconnect the wires on the dispense switch to be
removed from the door wiring harness.
4. Compress the clips inside the door on the dispense
switch and gently push the switch through the
opening.
5. Push new switch into the opening and spread the
clips to hold the switch in the door.
6. Reconnect the wires to the dispense switch from
door wiring harness.
7. Reinstall the door cover and secure with the five
screws previously removed.
8. Refer to Fig. 42 when reinstalling wires.

FIG. 41 DISPENSE SWITCHES
Location:
The dispense switches are located on the lower
outside of the dispenser door.

BLK

Test Procedure:
1. Disconnect the dispenser from the power source.
2. Remove the five screws attaching the dispenser
door cover to the door and move the door cover
to gain access to the switches.
3. With a voltmeter, check the voltage across the two
wires for each dispense switch. Connect the dispenser to the power source. The indication must
be +5 volts dc.

RED
BLK
GRN
Station #2
BLK
ORN

Station #1
BLK

If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness.

YEL
Station #4

4. Check for continuity across the terminals (top right
to top left) of the dispense switch with the switch in
the “ON” position. Continuity must not be present
when the switch is in the “OFF” (released) position.

Station #3

P1449

FIG. 42 DISPENSE SWITCH TERMINALS

If continuity is present as described, reconnect the door
wiring harness, the switch is operating properly.
If continuity is not present as described, replace the
switch.
34

49179 110613

SERVICE (CONT.)
Cold Water Dispense Switch (JDF-4S only)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the five screws attaching the dispenser
door cover to the door and move the door cover
to gain access to the switches.
3. Disconnect the wires on the dispense switch from
the door wiring harness.
4. Compress the clips inside the door on the dispense
switch and gently push the switch through the
opening.
5. Push new switch into the opening and spread the
clips to hold the switch in the door.
6. Reconnect the wires to the dispense switch from
door wiring harness.
7. Reinstall the door cover and secure with the five
screws previously removed.
8. Refer to Fig. 44 when reinstalling wires.

FIG. 43 COLD WATER DISPENSE SWITCH
Location:
The cold water dispense switch is located on the
lower outside of the dispenser door.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Remove the five screws attaching the dispenser
door cover to the door and move the door cover
to gain access to the switch.
3. With a voltmeter, check the voltage across the two
wires for the dispense switch. Connect the dispenser
to the power source. The indication must be +5
volts dc.

BLK
BLU

If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the Wiring
Diagrams and check the dispenser wiring harness.
4. Check for continuity across the terminals (top right
to top left) of the dispense switch with the switch in
the “ON” position. Continuity must not be present
when the switch is in the “OFF” (released) position.

P1449

FIG. 44 COLD WATER SWITCH TERMINALS

If continuity is present as described, reconnect the door
wiring harness, the switch is operating properly.
If continuity is not present as described, replace the
switch.
35

49179 110613

SERVICE (CONT.)
Dispense Membrane Switch (all Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Open the dispenser door.
3. Remove the four #8-32 screws securing the lower
door panel and remove the panel.
4. Disconnect the six pin harness from the switch
board.
5. Carefully peel the membrane switch from the front
of the switch bezel.
6. Remove any excess adhesive from the bezel surface.
7. Remove the backing from the new membrane
switch.
8. Feed the membrane switch harness through the
openning and apply the new membrane switch to
the switch bezel.
9. Connect the switch harness to the control board.

TE
WA

FIG.45 MEMBRANE SWITCHES
Location:
The dispense buttons are located on the lower
outside of the dispenser door and actuate switches on
the dispense switch board located on the inside of the
door.

#1
#2
#3
#4
#5

Test Procedures:
NOTE: Before continuing, check that the ribbon cable
is properly connected to the control board and not a
pin off in either direction.
1. Disconnect the dispenser from the power source.
2. Remove the rear panel and disconnect ribbon
cable.
3. Check for continuity of the switches using pin #1as
common.
Common
ON/STOP
Large
Medium
Small

PORTION CONTROL

If continuity is not present when the appropriate switch
is pressed, the Membrane Switch must be replaced.
If continuity is present, chech the short harness going
to J6 on the Control Board.

FIG. 46 MEMBRANE SWITCH

49179 110613

SERVICE (CONT.)
Cold Water Dispense Membrane Switch (all Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Open the dispenser door.
3. Remove the four #8-32 screws securing the lower
door panel and remove the panel.
4. Disconnect the three pin harness from the switch
board.
5. Carefully peel the membrane switch from the front
of the switch bezel.
6. Remove any excess adhesive from the bezel surface.
7. Remove the backing from the new membrane
switch.
8. Feed the membrane switch harness through the
openning and apply the new membrane switch to
the switch bezel.
9. Connect the switch harness to the control board.

TE
WA

FIG.47 MEMBRANE SWITCHES
Location:
The dispense buttons are located on the lower
outside of the dispenser door and actuate switches on
the dispense switch board located on the inside of the
door.

#1
#2

Common
Cold Water

D
OL

TE
WA

If continuity is not present when the appropriate switch
is pressed, the Membrane Switch must be replaced.
If continuity is present, chech the short harness going
to J6 on the Control Board.

COLD WATER DISPENSE

FIG. 48 MEMBRANE SWITCH

49179 110613

SERVICE (CONT.)
EMI Filter (all Models)
Removal and Replacement:
1. Disconnect the wires from the EMI Filter.
2. Remove the two #8-32 screws and nuts securing
the EMI Filter.
3. Remove and discard EMI Filter.
4. Install new EMI Filter using two #8-32 screws and
nuts to secure EMI Filter to its former location.
5. Refer to Fig. 50 when reconnecting the wires.

JDF-4S shown

FIG. 49 EMI FILTER
Location:
The EMI Filter is located on the electrical component
mounting bracket on the lower front of the dispenser
behind the splash panel.

118.0 kΩ - 118.5 kΩ
Across either pair

Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect the two black wires and two white wires
on the EMI Filter from the power cord and the main
wiring harness.
3. Check for resistance between the two black leads
on the EMI Filter.

FIG. 50 EMI FILTER CONNECTORS

If resistance is present as described the EMI Filter is
operating properly.
If resistance is not present as described, replace the
EMI Filter.

49179 110613

SERVICE (CONT.)
Lamps, Holders and Ballast(s) (Early Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the five #10-32 screws securing the door
cover to the door and move the cover aside to gain
access to the light panel.
3. Rotate the lamp to remove from the lamp holders.
4. Pry the lamp holder from light panel.
5. Cut the two wires from the ballast as close the lamp
holder as possible and remove the lamp holder.
6. Strip the ends of the wires from the ballast and
install the into the new lamp holder.
7. Snap the new lamp holder into the holes on the
light panel.
8. Replace the lamps and install the door cover using
the five screws previously removed.

FIG. 51 LAMPS & HOLDERS
Location:
The lamps and lamp holders are located on the door
light panel behind the door cover.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Remove the five #10-32 screws securing the door
cover to the door and move the cover aside to gain
access to the light panel.
3. Rotate the lamp to remove from the lamp holders.
4. Check for continuity across terminals on each end
of the lamp.
If continuity is present as described, continue to step 5.
If continuity is not present as described replace the lamp.

FIG. 52 LAMP HOLDERS

5. Check for 24VDC supplied to ballast (dual ballast
black to red, single ballast white to red).
If voltage is present as described, replace ballast. If
voltage is not present as described, refer to the Wiring
Diagrams and check the wiring harness back to the
transfomer/rectifier.
39

49179 110613

SERVICE (CONT.)
LED Lamps (JDF-2S, JDF-4S)

Removal and Replacement:
1. Disconnect power from the dispenser.
2. Remove the five #6-32 screws securing the door
cover to the door.
3. Carefully lower the door cover and disconnect the
lamp terminals from the LED regulator board.
4. Remove and discard the faulty LED board.
5. Install a new LED regulator board exposing the
adhesive backing.
6. Refer to Fig. 54 and reconnect wires to the LED
regulator board.
7. Replace the door cover and secure with the five
#6-32 screws.
8. Return power to the dispenser.

LED regulator board

FIG. 53 LED DOOR LIGHTS
Location:
The LED door lights are located inside the dispenser
door.
Test Procedures:
No illumination at all: First verify that the dispense
lockout switch has not been turned off!
1. Disconnect power from the dispenser.
2. Check the voltage across the black and red leads ofJ2
or J3 at the LED regulator board with a voltmeter.
Reconnect power to the dispenser. The indication
must be 24 volts dc.
3. Disconnect power from the dispenser.

J3
J2
J1

If voltage is present as described, the LED regulator
board is working correctly.
If voltage is not present as described, go to step 4.

White to brown
unregulated +30VDC

FIG. 54 LED DOOR LIGHT WIRING

4. Check for supply voltage (unregulated +30VDC)
across brown wire and white wire at J1 of the
regulator board. (FIG 54).
If voltge is present as described, replace LED regulator
board.
If voltage is not present as described, check the wiring
back to the main CBA.

49179 110613

SERVICE (CONT.)
Rectifier (JDF-2S, JDF-4S)
Removal and Replacement:
1. Disconnect the wires from the rectifier.
2. Remove the #10-32 screw securing the rectifier.
3. Remove the rectifier and discard.
4. Secure new rectifier with #10-32 screw.
5. Refer to Fig. 56 and reconnect the wires.

BLU from Door Harness (+)
WHI/GRN to Transformer (~ AC)
WHI/BLK to Transformer (~ AC)
WHI from Door Harness (-)

FIG. 56 RECTIFIER TERMINALS

FIG. 55 RECTIFIER
Location:
The rectifier is located on the electrical component
mounting bracket on the lower front of the dispenser
behind the splash panel.
Test Procedures:
1. Disconnect the dispenser from the power
source.
2. Remove the blue wire and the white wire from the
rectifier.
3. Check the voltage across the (+) and (-) terminals
on the rectifier with a voltmeter. Connect the dispenser to the power source. The indication must
be approximately 24 volts dc.
4. Disconnect the dispenser from the power
source.
If voltage is present as described, the rectifier is operating properly.
If voltage is not present as described, refer to the
dispenser wiring diagram and check the wiring back
to the transformer.
41

49179 110613

SERVICE (CONT.)
Relay (all Models)
4. Disconnect the blue/black wire and the red/black
wires from relay terminals #4 and #6.
5. Connect the dispenser to the power source.
6. Turn on power and check for continuity across
terminals on relay.
If continuity is present as described, disconnect the
dispenser from power source and reconnect wires to
terminals #4 and #6, the relay is working.
If continuity is not present as described, do the same
continuity test across terminals #2 and #8. If continuity is present between terminals #2 and #8, reconnect
wires to terminals #4 and #6 instead of #2 and #8.
If continuity is not present as described, replace the
relay.
FIG. 57 RELAY

Removal and Replacement:
1. Disconnect the wires from the relay.
2. Remove the two #8-32 locking screws securing the
relay and mounting bracket to the chassis. Remove
and discard relay.
3. Install the new relay to the mounting bracket and
then on the chassis using two #8-32 locking screws.
4. Refer to Fig. 58 to reconnect the wires.

Location:
The relay (or contactor) is located inside the dispenser chassis on the lower outside of the component
bracket.
Test Procedures:
1. Disconnect the dispenser from the power source.
2. With a voltmeter, check the voltage across the white
wire and the white/black wire. Connect the dispenser
to the power source. The indication must be:
a) 120 volts ac for 120 volt models.
b) 230 volts ac for 230 volt models.
3. Disconnect the dispenser from the power source.

Terminal #1
BLK from
Main Harness

Terminal #0
WHI from
Main Harness

Terminal #8
BLK from
Main Harness

If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the Wiring Diagram and check the dispenser wiring harness.
If harness has continuity, replace Control Board.

Terminal #2
Terminal #4

Terminal #6
WHI/ORN from
Main Harness

FIG. 58 RELAY TERMINALS

49179 110613

SERVICE (CONT.)
Resistor (all 230V Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Disconnect the resistor from the relay and discard.
3. Install new resistor to the relay as shown below.
4. Return power to the dispenser.

FIG. 59 RESISTOR
Location:
The resistor is located on the relay at the electrical
component mounting bracket on the lower front of the
dispenser behind the splash panel.
Test Procedures:
1. Disconnect the dispenser from the power source.
2. Remove the resistor from the relay.
3. Check the resistance across the terminals of the
resistor with a ohmmeter. The indication must be
approximately 36k ± 5%.
4. Disconnect the dispenser from the power source.

FIG. 60 RESISTOR TERMINALS

P3864

If resistance is present as described, the resistor is
operating properly.
If resistance is not present as described, replace the
resistor.

49179 110613

SERVICE (CONT.)
Solenoid - Cold Water (JDF-4S only)

6. Check the solenoid valve for coil action. Connect
the dispenser to the power source. Press the Cold
Water dispense switch and listen carefully in the
vicinity of the solenoid valve for a “clicking” sound
as the coil magnet attracts.
7. Disconnect the dispenser from the power source.
If the sound is heard as described and water will not
pass through the solenoid valve, there may be a blockage in the tank water outlet before the solenoid valve
or, the solenoid valve may require inspection for wear,
and removal of waterborne particles.
If the sound is not heard as described, replace the
solenoid valve.
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Turn off the water supply to the dispenser.
3. Remove the two wires from the solenoid valve.
4. Disconnect the water line from the solenoid valve.
5. Remove the #10-32 screws securing the solenoid
valve to the chassis frame. Remove solenoid valve.
6. Using the #10-32 screws install new solenoid valve
to the chassis frame.
7. Reconnect the water lines to solenoid valve.
8. Refer to schematic wiring diagrams when reconnecting the wires.

FIG. 61 COLD WATER DISPENSE SOLENOID
Location:
The Cold Water dispense solenoid is located at the
inside rear of the chassis frame.
Test Procedures:
1. Disconnect the dispenser from the power source.
2. Disconnect the two wires from the solenoid valve.
Press the Cold Water dispense switch on front of
the door.
3. With a voltmeter, check the voltage across the two
wires. Connect the dispenser to the power source.
The indication must be:
a) 120 volts ac for two wire 120 volt models, three
wire 120/208 volt, and 120/240 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 230 volts ac for two wire 230 volt models.
4. Disconnect the dispenser from the power source.

WHI/VIO to Control Board

If voltage is present as described, proceed to #5
If voltage is not present as described, refer to Wiring
Diagrams and check dispenser wiring harness.
5. Check for continuity across the solenoid valve coil
terminals.
WHI to Control Board

If continuity is present as described, reconnect the two
wires to the solenoid.
If continuity is not present as described, replace the
solenoid valve.

FIG. 62 COLD WATER SOLENOID
TERMINALS
44

49179 110613

SERVICE (CONT.)
Solenoid - Inlet (all Models)
If the sound is heard as described and water will not
pass through the solenoid valve, there may be a blockage in the water line before the solenoid valve or, the
solenoid valve may require inspection for wear, and
removal of waterborne particles.
If the sound is not heard as described, replace the
solenoid valve.

FIG. 63 INLET SOLENOID VALVE

Removal and Replacement:
1. Remove the two wires from the solenoid valve.
2. Turn off the water supply to the dispenser.
3. Disconnect the water lines to and from the solenoid
valve.
4. Remove the two #8-32 screws securing the solenoid to the dispenser base. Remove solenoid.
5. Install new solenoid valve on the dispenser base
and secure with the two #8-32 screws.
6. Securely fasten the water lines to and from the
solenoid valve.
7. Refer to Schematic Wiring Diagrams when reconnecting the wires.

P1445.40

Location:
The inlet solenoid is located inside on the rear of
the dispenser base.
Test Procedures:
1. Disconnect the dispenser from the power
source.
2. Disconnect the two wires from the solenoid
valve.
3. Check for continuity across the solenoid valve coil
terminals.

BRN to Control Board

WHI to Control Board

120V 1.2 kΩ
230V 3.84 kΩ

If continuity is present as described, reconnect the two
wires to the solenoid.
If continuity is not present as described, replace the
solenoid valve.
4. Check the solenoid valve for coil action. Connect
the dispenser to the power source. Listen carefully
in the vicinity of the solenoid valve for a “clicking”
sound as the coil magnet attracts.
5. Disconnect the dispenser from the power source.

P1217

FIG. 64 INLET SOLENOID VALVE TERMINALS

49179 110613

SERVICE (CONT.)
Temperature Probe (all Models)
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the top rear cover.
3. Disconnect the two pin connector from the dispenser main wiring harness.
4. Remove the temperature probe by firmly pullingup on the tube at the tank lid. This will disengage
the grommet from the tank lid.
5. Slide a new grommet on to the new temperature
probe.
6. Insert the temperature probe through the hole
in the tank lid and press the grommet firmly and
evenly so that the groove in the grommet fits into
the tank lid.
7. Reconnect the two pin connector to the dispenser
main wiring harness.
FIG. 65 TEMPERATURE PROBE

BLKor ORN pin 1
WHI pin 2

Location:
The temperature probe is located on the top of the
tank assembly.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Remove the top rear cover.
3. With a voltmeter, back probe the connector from
the temperature probe.
4. Connect the dispenser to the power source.
5. See the chart for voltage readings.
6. For continuity check, disconnect the dispenser
from the power source.
7. Disconnect the two pin connector from the dispenser main wiring harness.
8. With an ohmmeter, check for continuity across
the pins for the black and white wires.
9. See the chart for resistance/voltage readings. Alternate check: Leave two pin connector plugged
in, place dc voltmeter across two pin connector in
parallel, check voltage with dispenser running.
10. Verify wiring to probe.
11. If readings are not present as described, replace
the temperature probe.
NOTE: Some meters have difficulty measuring a sensor either rapidly rising or falling in temperature.

FIG. 66 TEMPERATURE PROBE
TEMP

RESISTANCE

VOLTAGE

SHORTED

0Ω

0VDC

32° F
0.0° C

31.2k - 34k Ω

3.0VDC

77° F
25.0° C

9.8k - 10.2k Ω

1.5VDC

OPEN

INFINITE

5.0VDC

NOTE: ALL FIGURES LISTED ABOVE ARE APPROXIMATE.
46

49179 012214

SERVICE (CONT.)
Temperature Sensor (all Models)

Removal and Replacement:
1. Remove the left side housing panel.
2. Disconnect the plug on the temperature sensor
leads from the connector on the dispenser main
harness.
3. Open the cabinet door and remove the product
containers.
4. Remove the cabinet fan and fan guard assembly.
5. Clip off the connector and pull the temperature
sensor from the top left rear of the cabinet and
discard.
6. Push new temperature sensor wires into the grommet at the top left rear of the cabinet and secure to
sensor mounting clip.
7. Refer to Fig. 68 and connect the wires to the new
plug.
8. Connect the sensor plug to the connector from the
main harness.
9. Reinstall the cabinet fan and guard assembly.
10. Reinstall the left side housing panel.

FIG. 67 TEMPERATURE SENSOR
Location:
The Temperature Sensor is located inside the cabinet
between the fan and the water coil.
Test Procedures:
1. Remove the left side housing panel.
2. Connect a voltmeter across the two leads of the
temperature sensor (leave plug connected);
The indication must be:
a) Approx. 1.4 vdc @ 71° F
b) Approx. 2.6 vdc @ 32° F

1. BLK to GRY J7-1
(Control Board) Positive
2. BLK to WHI/BLK J7-2
(Control Board) Negative

If voltage reading is 0v, the Control Board is not supplying the necessary 5v and should be replaced. If the
reading stays at 5vdc, replace sensor.
2

Alternate Test:
2. Disconnect the plug on sensor leads and check
resistance as indicated in chart.

FIG. 68 TEMPERATURE SENSOR

If resistance reading is not within the range listed in
chart, replace sensor.

TEMP

RESISTANCE

VOLTAGE

SHORTED

0Ω

0VDC

32° F
0° C

1.5k Ω

2.5VDC

77° F
25.0° C

350 Ω

1.1VDC

OPEN

INFINITE

5.0VDC

NOTE: ALL FIGURES LISTED ABOVE ARE APPROXIMATE.
47

49179 020514

SERVICE (CONT.)
Transformer (all Models)

Removal and Replacement:
1. Loosen the two #8-32 screws securing the component bracket to the dispenser housing base.
2. Pull component bracket out the front of the dispenser
far enough so the transformer can be disconnected
from the main wiring harness.
3 Remove the two #6-32 keps nuts securing the
transformer to the component bracket.
5. Remove and discard the transformer.
6. Install new transformer on the component bracket
and secure with two #6-32 keps nuts.
7. Refer to Fig. 70 and connect the transformer to the
main wiring harness.
8. Place the component bracket into position and
tighten the two #8-32 screws.

P3864

FIG. 69 TRANSFORMER

Location:
The transformer is located on the electrical component mounting bracket on the lower front of the
dispenser behind the splash panel.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Check the voltage across black wire and the white
wire from the main harness. Connect the dispenser
to power source. The indication must be:
a) 120 volts ac for two wire 120 volt models, three
wire 120/208 volt and three wire 120/240 volt
models.
b) 240 volts ac for two wire 240 volt models.
c) 230 volts ac for two wire 230 volt models.
4. Disconnect the dispenser from the power source.

WHI from
WHI/BLU to Control
Board J6-1,J12-1

Power Cord
BLK from
Power Cord

If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to the Wiring
Diagrams and check the main wiring harness.
5. Check the voltage between J6-1 and J6-3 at the
control board. Connect the dispenser to the power
source. The indication must be 24 volts ac.
If voltage is present as described the transformer is
operating properly.
If voltage is not present as described, replace the
transformer.

BLU to Control
Board J6-3,J12-3
P1647

FIG. 70 TRANSFORMER TERMINALS

49179 110613

SERVICE (CONT.)
Transformer - Lited Doors (JDF-2S, JDF-4S)

Removal and Replacement:
1. Loosen the two #8-32 screws securing the component bracket to the dispenser housing base.
2. Pull component bracket out the front of the dispenser
far enough so the transformer connector can be
disconnected from the main wiring harness.
3 Disconnect the transformer four pin connector from
the four pin plug on the main wiring harness.
4. Remove the two #6-32 keps nuts securing the
transformer to the component bracket.
5. Remove and discard the transformer.
6. Install new transformer on the component bracket
and secure with two #6-32 keps nuts.
7. Connect the four pin connector on the transformer
to four pin plug on the main wiring harness.
8. Place the component bracket into position and
tighten the two #8-32 screws.

P3864

FIG. 71 TRANSFORMER

Location:
The transformer is located on the electrical component mounting bracket on the lower front of the
dispenser behind the splash panel.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect the four pin plug from the main harness
from the four pin connector on the transformer.
3 Check the voltage across black wire pin 1 and the
white wire pin 2 on the plug from the main harness. Connect the dispenser to power source. The
indication must be:
a) 120 volts ac for two wire 120 volt models, three
wire 120/208 volt and three wire 120/240 volt
models.
b) 240 volts ac for two wire 240 volt models.
c) 230 volts ac for two wire 230 volt models.
4. Disconnect the dispenser from the power source.

WHI/GRN - T8
WHI/BLK - T12

WHI - 120V T2, 240V T6

If voltage is present as described reconnect the plug
and the connector and proceed to #5.
If voltage is not present as described, refer to the Wiring
Diagrams and check the main wiring harness.

BLK - TI
P1647

FIG. 72 TRANSFORMER TERMINALS

5. Check the voltage between J3-5 and J3-6 on the
six pin connector at the control board. Connect the
dispenser to the power source. The indication must
be 24 volts ac.
If voltage is present as described the transformer is
operating properly.
If voltage is not present as described, replace the
transformer.
49

49179 110613

Triac Map

1. Compressor Relay Q25
2. Station 2 Water Q27

3. Station 1 Water Q28

4. Station 1 Concentrate Q23

5. Station 2 Concentrate Q18
6. Station 3 Concentrate Q17
7. Station 4 Concentrate Q13

2
6

8. Station 3 Water Q7

9. Cold Water Valve Q11
10. Inlet Water Valve Q10
11. Station 4 Water Q8

5
11

49179 012214

SOL

MEDIUM

LARGE

DISPENSE
STATION
#1

PUSH BUTTON OPTION

DISPENSE
STATION
#1

STATIC
SHIELD

J2-5
SMALL

J2-1

STOP/PLUS

DISPENSE

YEL

VIO

YEL

RED

STATIC
SHIELD

120 VOLTS AC
or
220-230 VOLTS AC
2 WIRE
SINGLE PHASE

DISPENSE
STATION
#2

WHI/ORN

ORN

AUXILLARY
CONTROL BOARD

SOL

RIGHT
DISPENSE

PUMP

MOTOR

RED
ORN

VIO
WHI/ORN
YEL

J6-5

J6-1

RED
ORN

VIO
WHI/ORN
YEL

WHI/VIO

RED/BLK

L
I
N
E

BLK

WHI/BLK

BLK

J11-1

BLK
RED
BLU
YEL
ORN

DISPENSE
LOCKOUT
SWITCH

BRN

BLK

J11-5

J12-3

J12-1

J6-3

J6-1

J2-6

J2-1

BLU

WHI/BLU

BLU

WHI/BLU

RED
ORN
VIO
YEL
WHI/ORN
WHI/VIO

L
O
A
D

J8-1 J8-2

L
I
N
E

BLK
WHI

YEL

J5-4

J5-1

J9-1
J9-2

J7-1
J7-2

J3-1
J3-2

TRANSFORMER
BLU
WHI/BLU

REFRIGERATION
SWITCH

RED/BLK

WHI

BLK

GRN

PUMP

L
O
A
D

WHI RECIR.

WHI/VIO

WHI

CONDENSOR FAN
BLU/BLK

WHI

RIGHT
DISPENSE

RED/BLK

PTC
ASSY 1

MEDIUM

Models with Membrane Switches

WHI/VIO

PUMP

LEFT
DISPENSE

RED

LEFT
DISPENSE

BLU/BLK

LARGE

START

J3-1
STOP/PLUS
DISPENSE

J3-5
SMALL

RUN

3
5

COMPRESSOR
MOTOR

J4-1

GRN/YEL-16

COMPRESSOR ASSY

J4-5

LIMIT
THERM.

J1-1

BLU/BLK

J1-3

WHI
BLK
WHI/BLK
BRN
J1-1

WHI/BLU

J5-1

GRN

BLK
BRN
DISPENSE
LOCKOUT
SWITCH

GRN or YEL
RED
BLK
BLK

Chassis
Ground

BLK

1
LEFT
DISPENSE
SWITCH

PROGRAM
SWITCH

BLK

CABINET
THERMISTOR

RIGHT
DISPENSE
SWITCH

Chassis
Ground

GRN

RED

A B

EMI
FILTER
A

FAN

WHI

GND L1 N

BLK

L1 N

WHI

Models with Mechanical Switches

RED
BLK

WHI

WATER BATH
THERMISTOR

SOL

WATER INLET
VALVE

BLK or ORN
WHI

GRY
WHI/BLK

RED
WHI/RED

BRN

TRANSFORMER

J5-5

GRN/YEL
BRN/WHI

BLK

BLU

YEL

WHI

BRN
BLU
WHI/GRN

BLK

Models with Dual Dispense Option

YEL

J1-5
WHI

BLK

WHI
BRN
GRN

_
+

WHI
BRN
GRN

Door
Ground

RED

BLK

RED
BLK

Models with Lited Doors

J2-1

J3-1

J1-1

Regulator
Board

WHI

CONTROL P C BOARD

BRN

SCHEMATIC WIRING DIAGRAM JDF-2S

RED
BLK

BLK
BLK

RED

_
+
RED

220-230V
MODELS

_
+

120V
MODELS

ELECTRICAL SCHEMATIC DIAGRAM for JDF-2S
(Models with LED Lited Doors)

49179 110613

SOL

LEFT
DISPENSE

PUMP

YEL

VIO

LARGE

DISPENSE
STATION
#1

PUSH BUTTON OPTION

STATIC
SHIELD

J2-5

SMALL

DISPENSE
STATION
#1

MEDIUM

YEL

RED

STATIC
SHIELD

120 VOLTS AC
or
230 VOLTS AC
2 WIRE
SINGLE PHASE

DISPENSE
STATION
#2

WHI/ORN

ORN

AUXILLARY
CONTROL BOARD

SOL

RIGHT
DISPENSE

PUMP

MOTOR

L
O
A
D

RED
ORN

VIO
WHI/ORN
YEL

J6-5

J6-1

RED
ORN

L
I
N
E

BLK

WHI/BLK

BLK
RED
BLU
YEL
ORN

BLU

WHI/BLU

BLU

WHI/BLU

RED
ORN
VIO
YEL
WHI/ORN
WHI/VIO

J11-5

J11-1

J12-3

J12-1

J6-3

J6-1

J2-6

J2-1

L
O
A
D

DISPENSE
LOCKOUT
SWITCH

Chassis
Ground

C
O
N
T
R
O
L
P
C
B
O
A
R
D

L
I
N
E

BLK

J5-4

J5-1

J9-1
J9-2

J7-1
J7-2

RED
WHI/RED

BRN

GRN

BLK

CABINET
THERMISTOR

FAN

WHI

Models with Mechanical Switches

RED
BLK

WHI

WATER BATH
THERMISTOR

SOL

WATER INLET
VALVE

GRN or YEL
RED
BLK
BLK

BLK
WHI

GRY
WHI/BLK

BLK

WHI

J3-1
J3-2

TRANSFORMER
BLU
WHI/BLU

REFRIGERATION
SWITCH

RED/BLK

WHI

BLK

BLK
RED
BLU
YEL
ORN

RED/BLK

WHI/VIO

GRN

PUMP

WHI/BLU

BLU

LEFT
DISPENSE
SWITCH
GRN

RED

A B

EMI
FILTER

RIGHT
DISPENSE
SWITCH

GRN/YEL

GND L1 N

BRN/WHI

TRANSFORMER

WHI RECIR.

WHI/VIO

WHI

CONDENSOR FAN
BLU/BLK

WHI

RIGHT
DISPENSE

RED/BLK

MEDIUM

Models with Membrane Switches

WHI/VIO

RED

LARGE

5
PTC
ASSY 1

3
6

RUN

BLU/BLK

LEFT
DISPENSE

GRN/YEL-16

COMPRESSOR
MOTOR

J1-1

COMPRESSOR ASSY

J4-1

LIMIT
THERM.

J4-5

WHI

BLU/BLK

J1-3

BLK

START

J3-5
SMALL

J2-1

STOP/PLUS

DISPENSE

J1-1

WHI
BLK
WHI/BLK
BRN
J1-5

BLK
BLK

BRN
BLU
WHI/GRN

Models with Dual Dispense Option

J5-1

WHI
BLK

230V
MODELS

Chassis
Ground

3
DOOR
(Single Ballast)

Chassis
Ground
DOOR
HARNESS

WHI

˜
RECTIFIER
+
µ

BALLAST

WHI/GRN

WHI/BLK

BLU
BLU

SCHEMATIC WIRING DIAGRAM JDF-2S

J5-5

GRN
BLU or BRN
GRN
WHI
BLU or BRN
GRN
WHI
RED

BLK
1

LOAD

LINE

BLK
WHI

WHI

WHI/BLK

WHI
WHI
WHI/GRN

L1 N

BLK
BLK

J3-1
STOP/PLUS
DISPENSE

WHI

TRANSFORMER

DISPENSE
LOCKOUT
SWITCH

Chassis
Ground

3
DOOR
(Dual Ballast)

GRN
WHI
BRN
1

BALLAST

BLK
RED
WHI
WHI

WHI

WHI
BRN
1

BALLAST

BLK
RED
WHI
WHI

120V
MODELS

WHI

ELECTRICAL SCHEMATIC DIAGRAM for JDF-2S
(Models with Flourescent Lited Doors)

49179 110613

ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S
(Models with LED Lited Doors)
120V
MODELS

220-230V
MODELS

L1 N

GND L1 N
GRN/YEL

GRN

BRN
BLU

SCHEMATIC WIRING DIAGRAM JDF-4S

BLK

WHI

EMI
FILTER
A

TRANSFORMER
BLK

WHI/BLU

L
I
N
E

TRANSFORMER
BLU

L
O
A
D

WHI/BLU

L
I
N
E

COMPRESSOR ASSY
BLU/BLK

WHI
RUN

WHI/VIO

MOTOR

WHI

REFRIGERATION
SWITCH

CONDENSOR FAN

RED/BLK

BLK
WATER INLET
VALVE

K1
WHI RECIR.

ORN

PUMP

WHI/VIO

VIO
WHI/ORN
YEL
STATION 2
DISPENSE
YEL

YEL

RED
ORN

WHI/ORN

SOL

RED
ORN
VIO
YEL
WHI/ORN
WHI/VIO

VIO
WHI/ORN
YEL

J2-1

RED

STATION 4
DISPENSE
RED

VIO

PUMP

ORN

PUMP

WHI/VIO

VIO
WHI/ORN
YEL
STATION 3
DISPENSE

WHI/VIO

STATION 4
DISPENSE
YEL

SOL

YEL

PNK
BLU
GRY

RED
ORN

WHI/ORN

SOL

TAN

WHI/GRN
GRN
PNK
GRY
BLU
TAN

RED
WHI/RED

J7-1
J7-2

GRY
WHI/BLK

J9-1
J9-2

BLK or ORN
WHI

CABINET
THERMISTOR

t
WATER BATH
THERMISTOR

Models with Lited Doors
Models with Mechanical Switches

BLU

J6-3
J12-1

BLU

J12-3

BLK
RED
BLU
YEL
ORN

J11-1

J5-4

GRN or GRY
RED
BLK
BLK

BLK
RED
BLU
YEL
ORN

AUXILLARY
CONTROL BOARD

BLK

DISPENSE
STATION
#2

DISPENSE
STATION
#3

COLD
WATER
SWITCH

J8-1 J8-2

RED

Regulator
Board

STATION 1
DISPENSE
SWITCH

RED
BLK

DISPENSE
STATION
#1

120 VOLTS AC
or
220-230 VOLTS AC
2 WIRE
SINGLE PHASE

DISPENSE
STATION
#2

DISPENSE
STATION
#3

COLD
WATER
SWITCH

RED
BLK

J1-1

BLK

BRN

DISPENSE
STATION
#4

DISPENSE
LOCKOUT
SWITCH

YEL

STATIC
SHIELD

YEL

STATIC
SHIELD

J3-1

GRN

DISPENSE
STATION
#4

DISPENSE

STATIC
SHIELD

DISPENSE

STATIC
SHIELD

J2-1

YEL

STATIC
SHIELD

PUSH BUTTON OPTION

STATIC
SHIELD

STATION 2
DISPENSE
SWITCH

BLK
DISPENSE
STATION
#1

WHI

SMALL

MEDIUM

LARGE

STATIC
SHIELD

STOP/PLUS

STATIC
SHIELD

DISPENSE

SMALL

LARGE

MEDIUM

STOP/PLUS

SMALL

MEDIUM

LARGE

STOP/PLUS

LARGE

SMALL

MEDIUM

STOP/PLUS

STATIC
SHIELD

RED
BLK

YEL

BLK
STATIC
SHIELD

ORN

BLK
J11-5

K
RE

J5-5

J5-1

J1-3

J1-1

J4-5

J4-1

J3-5

J3-1

J2-5

J2-1

J6-5

STATION 3
DISPENSE
SWITCH

Models with Membrane Switches
J6-1

BLK

YEL
ORN
BLU

J15-4
J5-1

RED
BLK

STATION 4
DISPENSE
SWITCH

8
J15-1

J6-1

COLD WATER
DISPENSE
SWITCH
BLU

J13-6

WHI/BLU

FAN

J13-1

WHI/GRN
GRN
12

RED
BLK

J2-6

RED
ORN
12

STATION 3
DISPENSE

WHI

SOL

J3-1
J3-2

CONTROL P C BOARD

STATION 1
DISPENSE

WHI/VIO

J1-5

GRN

J1-1

RED

BRN
WHI/VIO

STATION 2
DISPENSE

WHI
BLK
WHI/BLK
BRN

PUMP

STATION 1
DISPENSE

RED/BLK

BRN

BLU/BLK

RED/BLK

PTC
ASSY 1

VIO

WHI

SOL

BLK

COLD WATER
VALVE

WHI/BLK

BLK

BLU/BLK

SOL

BLK

WHI

WHI/VIO

WHI

BLK

START

GRN/YEL-16

PUMP

COMPRESSOR
MOTOR

LIMIT
THERM.

RED

A B

WHI
WHI

L
O
A
D

BLK

BLU

DISPENSE
LOCKOUT
SWITCH

WHI
BRN
GRN

PROGRAM
SWITCH

WHI
BRN
GRN

BLK

Chassis
Ground

Door
Ground

49179 110613

LARGE

WHI/VIO

PUMP

SOL

STATION 3
DISPENSE

RED

STATION 3
DISPENSE

SOL

STATION 1
DISPENSE

PUMP

STATION 1
DISPENSE
RED

YEL

VIO

YEL

VIO

DISPENSE
STATION
#1

STATIC
SHIELD

DISPENSE
STATION
#2

SOL

STATION 4
DISPENSE

PUMP

STATION 4
DISPENSE

SOL

STATION 2
DISPENSE

PUMP

WHI/ORN

ORN

WHI/ORN

ORN

STATIC
SHIELD

DISPENSE
STATION
#3

STATIC
SHIELD

MOTOR

WHI

COLD
WATER
SWITCH

STATIC
SHIELD

COLD
WATER
SWITCH

STATIC
SHIELD

RED
ORN

VIO
WHI/ORN
YEL

WHI/VIO

RED
ORN

VIO
WHI/ORN
YEL

WHI/VIO

CONDENSOR FAN

BLU/BLK

AUXILLARY
CONTROL BOARD

YEL

RED

YEL

RED

STATION 2
DISPENSE

RED/BLK

PTC
ASSY 1

RUN

J1-3

COMPRESSOR
MOTOR

J6-5

J6-1

DISPENSE
STATION
#4

STATIC
SHIELD

BLK
RED
BLU
YEL
ORN

WHI/GRN
GRN

PNK
BLU
GRY

TAN

RED
ORN

BLK
RED
BLU
YEL
ORN

BLU

WHI/BLU

BLU

WHI/BLU

WHI/GRN
GRN
PNK
GRY
BLU
TAN

RED
ORN
VIO
YEL
WHI/ORN
WHI/VIO

RED/BLK

BLK

J11-5

J11-1

J12-3

J12-1

J6-3

J6-1

J13-6

J13-1

J2-6

J2-1

120 VOLTS AC
or
230 VOLTS AC
2 WIRE
SINGLE PHASE

RED/BLK

VIO
WHI/ORN
YEL

WHI/VIO

GRN

PUMP

WHI RECIR.

REFRIGERATION
SWITCH

WHI

BLU

BLU
WHI/BLU

BLK
WHI

WHI

WATER BATH
THERMISTOR

RED
BLK

BLK

GRN or GRY
RED
BLK
BLK

BLK

STATION 1
DISPENSE
SWITCH

STATION 2
DISPENSE
SWITCH

STATION 3
DISPENSE
SWITCH

STATION 4
DISPENSE
SWITCH

GRN

RED

YEL

ORN

BLK

COLD WATER
DISPENSE
SWITCH

A B

EMI
FILTER

BLU

CABINET
THERMISTOR

FAN

Models with Mechanical Switches

YEL
ORN
BLU

BLK
WHI

GRY
WHI/BLK

RED
WHI/RED

SOL

WATER INLET
VALVE

SOL

DISPENSE
LOCKOUT
SWITCH

J5-4

J5-1

J15-4

J15-1

J9-1
J9-2

J7-1
J7-2

J3-1
J3-2

BRN

L
I
N
E

COLD WATER
VALVE

WHI/VIO

L
O
A
D

WHI

BLK

Chassis
Ground

C
O
N
T
R
O
L
P
C
B
O
A
R
D

L
I
N
E

TRANSFORMER

L
O
A
D

TRANSFORMER

GRN/YEL

GND L1 N

230V
MODELS

BLK

GRN

BLK

BRN
BLU
WHI

L1 N

BLK

WHI/BLU

WHI/BLK

WHI/VIO
J1-1

BLU/BLK

LARGE

WHI
BLK
WHI/BLK
BRN
J1-5

LIMIT
THERM.

MEDIUM

WHI

GRN/YEL-16

WHI/VIO

MEDIUM

PUSH BUTTON OPTION

DISPENSE

J4-5

BLK

WHI

BLK

BLU/BLK

LARGE

Chassis
Ground

3
DOOR
(Single Ballast)

Chassis
Ground
DOOR
HARNESS

WHI

˜
RECTIFIER
+
µ
GRN
VIO or BRN
GRN
WHI
VIO or BRN
GRN
WHI
RED

120V
MODELS

BALLAST

WHI/GRN

WHI/BLK

BLU
BLU

COMPRESSOR ASSY

LARGE

Models with Membrane Switches

J2-1

STOP/PLUS

J2-5
SMALL

J3-1
STOP/PLUS
DISPENSE

MEDIUM

BLK
BLK

BLK
1

LOAD

LINE

BLK
WHI

WHI

WHI/BLK

WHI
WHI
WHI/GRN

START

J3-5
SMALL

J4-1
STOP/PLUS
DISPENSE

SMALL

J1-1
DISPENSE
DISPENSE

J5-5
SMALL

J5-1
STOP/PLUS
DISPENSE

MEDIUM

WHI

TRANSFORMER

DISPENSE
LOCKOUT
SWITCH

Chassis
Ground

3
DOOR
(Dual Ballast)

GRN
WHI
BRN
1

BALLAST

BLK
RED
WHI
WHI

WHI

WHI
BRN
1

BALLAST

BLK
RED
WHI
WHI

SCHEMATIC WIRING DIAGRAM JDF-4S

WHI

ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S
(Models with Flourescent Lited Doors)

49179 110613

ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D
120V
MODELS

SCHEMATIC WIRING DIAGRAM JDF-4D

230V
MODELS

L1 N

GND L1 N
GRN/YEL

GRN

BRN
BLU

(Press & Release Models)

BLK

WHI

EMI
FILTER
A

TRANSFORMER
L
I
N
E

WHI/BLU

L
O
A
D

L
I
N
E

BLK

COMPRESSOR
MOTOR

RUN

WHI
PTC
ASSY 1

COLD WATER
VALVE

WHI/BLK

WHI/VIO

WHI
REFRIGERATION
SWITCH

RED/BLK

BLK

J1-1

GRN

STATION 2
PUMP
DISPENSE

VIO
ORN
RED
PNK
ORN
WHI/GRN

STATION 3
PUMP
DISPENSE

SOL

STATION 3
DISPENSE

SOL

STATION 4
DISPENSE

SOL

VIO
ORN
RED
PNK
ORN
WHI/GRN

WATER INLET
VALVE

WHI/VIO
WHI/ORN
YEL
TAN
BLU
GRY

BRN

J3-1
J3-2

J2-1

J2-6

STATION 4
PUMP
DISPENSE

STATION 2
DISPENSE

J1-5

STATION 1
PUMP
DISPENSE

WHI
BLK
WHI/BLK
BRN

PUMP

RED/BLK

WHI/VIO

WHI RECIR.

WHI/VIO
WHI/ORN
YEL
TAN
BLU
GRY

J13-1

C
O
N
T
R
O
L
P
C
B
O
A
R
D

WHI

SOL
RED
WHI/RED

J7-1
J7-2

GRY
WHI/BLK

J9-1
J9-2

BLK
WHI

MOTOR

SOL

WHI

SOL

CONDENSOR FAN
BLU/BLK

BLU/BLK

WHI

RED
BLK

FAN

RED
BLK

FAN

1
BLK

BLK

WHI

BLK

START

GRN/YEL-16

LIMIT
THERM.

STATION 1
DISPENSE

WHI

COMPRESSOR ASSY
BLU/BLK

WHI

TRANSFORMER
BLU

A B

WHI

WHI/BLU

BLK
L
O
A
D

BLK

BLU

CABINET
THERMISTOR

t
WATER BATH
THERMISTOR

J8-1

WHI-22
BLK-22

1
CLOCK

J13-6

6
J15-1
WHI/BLU
BLU

J6-1
J6-3

WHI/BLU

J12-1

BLU

J12-3

BLK
RED
BLU
YEL
ORN

J11-1

J15-4
J5-1

J5-4

BLK
BLK

Models with Membrane Switches
WHI/GRN
BLU
TAN
WHI/ORN
WHI/VIO

J6-1

J10-1

AUXILLARY
CONTROL BOARD
J6-5

BLK
RED
BLU
YEL
ORN

J11-5

J8-1
J10-7

J8-6
J9-1
BLK
J9-4
1

RINSE
SWITCH

POWER
LED

DISPENSE
SWITCH
#1

DISPENSE
SWITCH
#2

DISPENSE
NOZZLE
#1

DISPENSE
SWITCH
#3

DISPENSE
NOZZLE
#2

COOLING
LED

DISPENSE
LOCKOUT
SWITCH

BLK

STATIC
SHIELD

DISPENSE
SWITCH
#4

DISPENSE
NOZZLE
#3

DISPENSE
NOZZLE
#4

120 VOLTS AC
or
230 VOLTS AC
2 WIRE
SINGLE PHASE

WHI/VIO
WHI/ORN
TAN
BLU
WHI/GRN

49179 110613

ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D
120V
MODELS

SCHEMATIC WIRING DIAGRAM JDF-4D

220-230V
MODELS

L1 N

GND L1 N
GRN/YEL

GRN

BRN
BLU

(Portion Control Models)

BLK

WHI

EMI
FILTER
A

TRANSFORMER
L
I
N
E

WHI/BLU

L
O
A
D

L
I
N
E

BLK

COMPRESSOR
MOTOR

RUN

WHI
PTC
ASSY 1

COLD WATER
VALVE

WHI/BLK

WHI/VIO

WHI
REFRIGERATION
SWITCH

RED/BLK

BLK

RED/BLK

J1-1

GRN

STATION 2
PUMP
DISPENSE

VIO
ORN
RED
PNK
ORN
WHI/GRN

STATION 3
PUMP
DISPENSE

WATER INLET
VALVE

STATION 3
DISPENSE

SOL

STATION 4
DISPENSE

SOL

WHI/VIO
WHI/ORN
YEL
TAN
BLU
GRY

BRN

J3-1
J3-2

J2-1

J2-6

CONTROL P C BOARD

SOL

VIO
ORN
RED
PNK
ORN
WHI/GRN

STATION 4
PUMP
DISPENSE

STATION 2
DISPENSE

J1-5

STATION 1
PUMP
DISPENSE

RED/BLK

WHI
BLK
WHI/BLK
BRN

PUMP

WHI/VIO

WHI RECIR.

WHI/VIO
WHI/ORN
YEL
TAN
BLU
GRY

WHI

SOL
RED
WHI/RED

J7-1
J7-2

GRY
WHI/BLK

J9-1
J9-2

BLK
WHI

MOTOR

SOL

WHI

SOL

CONDENSOR FAN
BLU/BLK

BLU/BLK

WHI

RED
BLK

FAN

RED
BLK

FAN

1
BLK

BLK

WHI

BLK

START

GRN/YEL-16

LIMIT
THERM.

STATION 1
DISPENSE

WHI

COMPRESSOR ASSY
BLU/BLK

WHI

TRANSFORMER
BLU

A B

WHI

WHI/BLU

BLK
L
O
A
D

BLK

BLU

CABINET
THERMISTOR

t
WATER BATH
THERMISTOR

J8-1

WHI-22
BLK-22

1
CLOCK

J13-1

J13-6

6
J15-1
WHI/BLU
BLU

J6-1
J6-3

WHI/BLU

J12-1

BLU

J12-3

BLK
RED
BLU
YEL
ORN

J11-1

J15-4
J5-1

J5-4

BLK
BLK

Models with Membrane Switches
WHI/GRN

J6-1

J8-1

J10-1
POWER LED

BLU
TAN
WHI/ORN
WHI/VIO

J6-5

BLK
RED
BLU
YEL
ORN

J11-5

J8-6
J10-7
COOLING LED
J9-1

DISPENSE
STATION
#1

DISPENSE
STATION
#2

DISPENSE
STATION
#3

DISPENSE
NOZZLE
#1

DISPENSE
NOZZLE
#2

DISPENSE
NOZZLE
#3

COLD
WATER
SWITCH

J5-5
SMALL

LARGE

J5-1

RINSE
SWITCH

MEDIUM

J1-1

J1-3
STATIC
SHIELD

J9-4

STOP/PLUS

STATIC
SHIELD

DISPENSE

J4-5
LARGE

SMALL

MEDIUM

J4-1

J3-5
STATIC
SHIELD

STOP/PLUS

SMALL

MEDIUM

J3-1
LARGE

STATIC
SHIELD

STOP/PLUS

J2-5
SMALL

LARGE

MEDIUM

STOP/PLUS

J2-1

AUXILLARY
CONTROL BOARD

BLK

DISPENSE
LOCKOUT
SWITCH

BLK

STATIC
SHIELD

DISPENSE
STATION
#4

DISPENSE
NOZZLE
#4

120 VOLTS AC
or
220-230 VOLTS AC
2 WIRE
SINGLE PHASE

WHI/VIO
WHI/ORN
TAN
BLU
WHI/GRN

49179 110613

ELECTRICAL SCHEMATIC DIAGRAM
for JDF-4S-SB
120V
MODELS

L1 N

GND L1 N
GRN/YEL

GRN

230V
MODELS

BRN
BLU

SCHEMATIC WIRING DIAGRAM JDF-4S-SB

BLK

WHI/BLU

BLK
L
O
A
D

L
I
N
E

WHI

MAIN POWER
ON/OFF
SWITCH

TRANSFORMER
BLU
WHI/BLU

L
O
A
D

L
I
N
E

BLK

COMPRESSOR
MOTOR

RUN

WHI
START
3

CONDENSOR FAN
WHI

RED

PUMP

STATION 2
DISPENSE
VIO

RED

PUMP

GRN

ORN
WHI/VIO

VIO
WHI/ORN
YEL

SOL

STATION 2
DISPENSE
YEL

YEL

SOL

WHI/ORN

WHI/VIO

VIO
WHI/ORN
YEL

RED
ORN

WATER INLET
VALVE

RED
ORN
VIO
YEL
WHI/ORN
WHI/VIO

J2-1

RED

PUMP

STATION 4
DISPENSE
VIO

RED

PUMP

ORN
WHI/VIO

VIO
WHI/ORN
YEL
STATION 3
DISPENSE

WHI/VIO

SOL

STATION 4
DISPENSE
YEL

YEL

SOL

WHI/ORN

TAN

PNK
BLU
GRY

RED
ORN

WHI/GRN
GRN
PNK
GRY
BLU
TAN

J3-1
J3-2

RED
WHI/RED

J7-1
J7-2

GRY
WHI/BLK

J9-1
J9-2

BLK or ORN
WHI

BLU
WHI/BLU
BLU

CABINET
THERMISTOR

t
WATER BATH
THERMISTOR

BLK

BLK
BLK
BLK
BLK
BLK

J13-6

J6-1

YEL
ORN
BLU

J5-1

J12-1
J5-4

J12-3

GRN
RED
BLK
BLK

J11-5

DISPENSE
LOCKOUT
SWITCH

BLK

DISPENSE

BLK

6
STATIC
SHIELD

DISPENSE
STATION
#3
DISPENSE

6
STATIC
SHIELD

DISPENSE
STATION
#2

RED
BLK

DISPENSE

BLK

DISPENSE
STATION
#4

YEL
RED
GRN
BLK
BLK

BLK
BLK
BLK
BLK
BLK

STATIC
SHIELD

YEL
BLK

ORN

J15-4

J6-3

ORN
BLK

J11-1

120 VOLTS AC
or
230 VOLTS AC
2 WIRE
SINGLE PHASE

FAN

J15-1
WHI/BLU

RED
BLK

J13-1

WHI/GRN
GRN
12

WHI

SOL

J2-6

RED
ORN
12

STATION 3
DISPENSE

BRN

CONTROL P C BOARD

STATION 1
DISPENSE

WHI/VIO

RED/BLK

BLK

STATION 1
DISPENSE

WHI

BLK

REFRIGERATION
SWITCH

RED/BLK
RECIR.
PUMP

BLK

RED/BLK
K1

WHI

MOTOR

BLK

BLU/BLK
BLU/BLK

WHI

SOL

J1-5

PTC
ASSY 1

WHI/VIO

WHI
BLK
WHI/BLK
BRN

COLD WATER
VALVE

WHI/BLK

J1-1

GRN/YEL-16

LIMIT
THERM.

BLK
WHI

WHI

COMPRESSOR ASSY
BLU/BLK

BLK
WHI

A B

WHI

TRANSFORMER
BLU

BLK

WHI

EMI
FILTER
A

6
STATIC
SHIELD

DISPENSE
STATION
#1

GRN
BLK

DISPENSE

49179 110613

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