Conair 106 Users Manual

106 to the manual d21d55d7-b85f-47bc-9e55-251987975200

2015-02-03

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Page Count: 97

Hopper Temperature

Controller

Process Air Heater, 30 to 270 kW.

For use with Conair Carousel Plus Series W Dryers and HADs.

Corporate Office: 412.312.6000 lInstant Access 24/7 (Parts and Service): 800.458.1960 l Parts and Service: 814.437.6861

USER GUIDE

UGD031/0106

www.conairnet.com

INTRODUCTION • Purpose of the User Guide • How the guide is organized • Your responsibilities as a user • ATTENTION:

Read this so no one gets hurt • How to use the lockout device • DESCRIPTION • What is the HTC process air

heater? • Typical applications • How it works • Specifications: HTC Carousel Plus process air dryer • Specifications:

HTC models 600 - 5000 • Specifications:HTC for HAD • INSTALLATION • Unpacking the boxes • Preparing for instal-

lation • Installation of the HTC control models 30, 60,and 90 • Installation of the HTC control model 120 • Installation of

the HTC control models 180 and 270 • Location and mounting of the HTC heater assembly models 30, 60, and 90 •

Location and mounting of the HTC heater assembly model 120 • Location and mounting of the HTC heater assembly mod-

els 180 and 270 • Connecting the HTC heater assembly to the dryer or blower and hopper • Installing the isolation valves

• Connecting the power on models HTC 180 and 270 • Connecting the control wiring on models 180 and 270 •

Please record your equipment’s

model and serial number(s) and

the date you received it in the

spaces provided.

It’s a good idea to record the model and serial number(s) of your equipment and

the date you received it in the User Guide. Our service department uses this infor-

mation, along with the manual number, to provide help for the specific equipment

you installed.

Please keep this User Guide and all manuals, engineering prints and parts lists

together for documentation of your equipment.

Date:

Manual Number: UGD031/0106

Serial Number(s):

Model Number(s):

DISCLAIMER: The Conair Group, Inc., shall not be liable for errors contained in this User Guide or

for incidental, consequential damages in connection with the furnishing, performance or use of

this information. Conair makes no warranty of any kind with regard to this information, including,

but not limited to the implied warranties of merchantability and fitness for a particular purpose.

Table of Contents

1-1 Introduction

Purpose of the user guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

How the guide is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Your responsibilities as a user. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

ATTENTION: Read this so no one gets hurt . . . . . . . . . . . . . . . . . . . 1-4

How to use the lockout device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

2-1 Description

What is the HTC process air heater? . . . . . . . . . . . . . . . . . . . . . . . .2-2

Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

How it works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Specifications: HTC Models 600 - 5000 . . . . . . . . . . . . . . . . . . . . . 2-6

Specifications: HTC for Hot Air Dryers (HAD) . . . . . . . . . . . . . . . . . . 2-7

3-1 Installation

Unpacking the boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Preparing for installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Installation of the HTC control models HTC 30, 60, and 90 . . . . . . . 3-3

Installation of the HTC control model HTC 120 . . . . . . . . . . . . . . . . 3-4

Installation of the HTC control models HTC 180 and 270. . . . . . . . . 3-4

Location and mounting of the HTC heater assembly

models 30, 60, and 90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Location and Mounting of the HTC heater assembly

model HTC 120. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Table of Contents l i

Location and mounting of the HTC heater assembly

models 180 and 270. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Connecting the HTC heater assembly to the dryer or blower

and hopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Installing the isolation valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Connecting the power on models HTC 180 and 270 . . . . . . . . . . . . 3-8

Connecting the control wires on models HTC 180 and 270. . . . . . 3-10

Connecting the RTD sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Testing the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

4-1 Operation

The HTC process air heater: control panel DC. . . . . . . . . . . . . . . . . 4-2

HTC DC control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Control function flow charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Control function descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

HTC DC control alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Initial operation (for HAD only). . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Initial operation (for Carousel Plus dryer HTC) . . . . . . . . . . . . . . . . 4-21

Autotuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Normal operation to start heating . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Normal operation to stop heating . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

5-1 Maintenance

Preventative maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . 5-2

6-1 Troubleshooting

Before beginning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

A few words of caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

ii l Table of Contents

DIAGNOSTICS

How to identify the cause of a problem . . . . . . . . . . . . . . . . . . . . . 6-4

Shut down alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Passive alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

REPAIR

Replacing fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Checking heater solid state relays. . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Checking or replacing temperature sensors . . . . . . . . . . . . . . . . . 6-11

Replacing the heating elements . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Replacing the air flow differential pressure switch . . . . . . . . . . . . 6-14

AAppendix

We’re here to help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

How to contact customer service . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Before you call... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Equipment guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Performance warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Warranty limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

AD Addendum

Blower installation and maintenance . . . . . . . . . . . . . . . . . . . . . . AD-1

Table of Contents l iii

✐

Note: This addendum applies only if you have purchased a Conair Hot

Air Dryer (HAD).

iv l Table of Contents

Introduction

Purpose of the user guide. . . . . . . . . . . . . . 1-2

How the guide is organized. . . . . . . . . . . . . 1-2

Your responsibilities as a user. . . . . . . . . . . 1-3

ATTENTION:

Read this so no one gets hurt . . . . . . . . 1-4

How to use the lockout device. . . . . . . . . . . 1-5

SECTION

Introduction l 1-1

Introduction

✐

Purpose of the User Guide

This User Guide describes the Conair Hopper Temperature Controller

(HTC) process air heater and explains step-by-step how to install, oper-

ate, maintain and repair this equipment.

Before installing this product, please take a few moments to read the User

Guide and review the diagrams and safety information in the instruction

packet. You also should review manuals covering associated equipment in

your system. This review won’t take long, and it could save you valuable

installation and operating time later.

How the Guide is Organized

Symbols have been used to help organize the User Guide and call your

attention to important information regarding safe installation and operation.

Symbols within triangles warn of conditions that could be hazardous to users or

could damage equipment. Read and take precautions before proceeding.

Numbers indicate tasks or steps to be performed by the user.

A diamond indicates the equipment’s response to an action performed by the user.

An open box marks items in a checklist.

A circle marks items in a list.

Indicates a tip. A tip is used to provide you with a suggestion that will help you with

the maintenance and the operation of this equipment.

Indicates a note. A note is used to provide additional information about the steps

◆

❒

•

✒

1-2 l Introduction

Introduction l 1-3

Your Responsibility as a User

You must be familiar with all safety procedures concerning installation, opera-

tion and maintenance of this equipment. Responsible safety procedures include:

•Thorough review of this User Guide, paying particular attention

to hazard warnings, appendices, and related diagrams.

•Thorough review of the equipment itself, with careful attention

to voltage sources, intended use, and warning labels.

•Thorough review of instruction manuals for associated equipment.

•Step-by-step adherence to instructions outlined in this User Guide.

Introduction

ATTENTION:

Read this so no one gets hurt

We design equipment with the user’s safety in mind. You can avoid the potential

hazards identified on this machine by following the procedures outlined below and

elsewhere in the User Guide.

WARNING: Improper installation, operation, or

servicing may result in equipment damage or

personal injury.

This equipment should be installed, adjusted, and serviced by qualified

technical personnel who are familiar with the construction, operation,

and potential hazards of this type of machine.

All wiring, disconnects, and fuses should be installed by qualified elec-

trical technicians in accordance with electrical codes in your region.

Always maintain a safe ground. Do not operate the equipment at power

levels other than what is specified on the machine serial tag and data

plate.

WARNING: Voltage hazard

This equipment is powered by three-phase alternating current,

as specified on the machine serial tag and data plate.

A properly sized conductive ground wire from the incoming power

supply must be connected to the chassis ground terminal inside the

electrical enclosure (control center). Improper grounding can result in

severe personal injury and erratic machine operation.

Always disconnect and lock out the incoming main power source before

opening the control center or performing non-standard operating proce-

dures, such as routine maintenance. Only qualified personnel should

perform troubleshooting procedures that require access to the control

center while power is on.

1-4 l Introduction

Introduction

Introduction l 1-5

How to Use the Lockout Device

CAUTION: Before performing maintenance or repairs on this product,you should disconnect and lockout electri-

cal power sources to prevent injury from unexpected energization or start-up. A lockable device has been pro-

vided to isolate this product from potentially hazardous electricity.

Lockout is the preferred method of isolating machines or equipment from energy sources. Your Conair product

is equipped with the lockout device pictured below. To use the lockout device:

11Stop or turn off the equipment.

22Isolate the equipment from the electric power. Turn the rotary

disconnect switch to the OFF, or “O” position.

33Secure the device with an assigned lock or tag. Insert a lock or tag

in the holes to prevent movement.

44The equipment is now locked out.

WARNING: Before removing lockout devices and returning switches to the

ON position, make sure that all personnel are clear of the machine,tools

have been removed, and all safety guards reinstalled.

To restore power to the heater,turn the rotary disconnect back to the ON position:

11Remove the lock or tag.

22Turn the rotary disconnect switch to the ON or “I”position.

O OFF

1-6 l Introduction

Description l 2-1

Description

What is the HTC process air heater?. . . . . . . 2-2

Typical applications. . . . . . . . . . . . . . . . . . 2-3

How it works . . . . . . . . . . . . . . . . . . . . . . 2-4

Specifications: HTC models 600 - 5000. . . . . 2-6

Specifications: HTC for Hot Air Dryers (HAD) . 2-7

SECTION

Description

What is the HTC Process Air

Heater?

The HTC process air heater is designed to control the temperature of dry air as

it enters a material hopper. This process air heater can be set to increase, or

“raise”, the temperature of air that was dehumidified at a central dryer or from

a blower as part of hot air drying.

The HTC includes a control center, heater box with electric heating elements,

an airflow differential pressure switch, and an RTD temperature probe(s).

The differential pressure switch places the HTC in standby mode to save energy

and prevent heating element damage when air flow is not present.

2-2 l Description

Description l 2-3

Description

Typical Applications

Carousel Plus “W” Dryer

The HTC process air heater is designed for use with a dehumidifying device

that supplies dry air, such as a central dehumidifying dryer in which the process

heaters (if present) have been disabled, or with a stand alone blower for hot air

drying.

The HTC can be used successfully in applications that require:

•Drying temperatures up to 350°F (176.7°C) (250°F [121.1°C] on HAD

models).

•The ability to dry multiple materials requiring different drying temperature

setpoints in a central drying system. (Requires separate HTCs / hoppers.)

•The ability to easily take a hopper “off-line” for cleaning without shutting

down the entire central drying system.

Hot Air Dryer (HAD)

The HTC process air heater,for use with a hot air dryer such as a Conair model

HAD, connects plant air motivated by a Conair blower assembly to a material dry-

ing hopper.

The HTC for HAD can be used successfully in applications that require:

•Drying temperatures up to 250°F (121.1°C).

•Non-hygroscopic materials that are in pellet or flake form (not powder).

•Open loop drying (not recirculated).

The HTC does not have an integral blower to circulate the hot air, so it can not be

used as a stand-alone material preheater. It must be combined with a Conair

Carousel Plus Series “W” dryer or HAD.

2-4 l Description

How it Works

The HTC process air heater works a lot like the thermostat and heater in your

house. The RTD probe measures the temperature of the air entering the hopper.

If this air is not warm enough to properly dry the material in the hopper, the

RTD sends a message to the temperature controller which tells the heater to

begin heating. The heating elements inside the heater enclosure heat until the

RTD probe senses that the air entering the hopper is at the setpoint entered by

the user.

The HTC has a process protection RTD (over-temperature safety). The temper-

ature controller shuts off power to the heating elements if they get too hot and

an alarm is generated.

An air flow differential pressure switch detects air flow by sensing the natural

drop of pressure due to flow through the heater. This prevents damage to the

heater elements or material in the hopper on loss of air flow.

The temperature controller alarms if the heating elements are heating too hot. It

also alarms if the heating elements are not heating enough.

How the HTC Works

Heaters

Startup /

Shutdown

For Startup:

1. With heaters in

Standby, turn on

blower or dryer.

2. Enable heaters.

For Shutdown:

1. Switch heaters to

Standby.

2. Wait 60 seconds

before turning off

blower or dryer.

Enable

Standby

Temperature Controller

Control Center

Hopper Inlet

Heater Box

Heating Element

Process Temperature RTD

Process Protection RTD

Description l 2-5

How it Works (continued)

How the HAD Works

1 Centrifugal Blower Assembly

2 Control Center

3 Electric Heater Assembly

4 Hose (15 ft)

5 Insulated Hose (3 ft)

6 RTD Process Temperature

7 RTD Process Protection

8 Outlet Filter Sock

Description

Specifications: HTC MODELS 600 - 5000

2-6 l Description

MODEL HTC HTC-30H* HTC-60H* HTC-90H* HTC-120H* HTC-180H* HTC-270H*

Carousel Plus dryer model W600 W800 W1000 W1600 W2400 W3200 W5000

Performance characteristics

Temperature range 150° - 375° F {66° - 191° C}

Flow rate cfm 300 400 500 800 1200 1600 2500

Pressure drop@flow rate

inches WC†3.0 1.8 2.3 4.0 3.8 5.9 6.4

{mm} WC†{76.2} {45.7} {58.4} {101.6} {96.5} {149.9} {162.6}

Dimensions inches {cm} and weight lb {kg}

Heater box dimensions

Inlet size (OD) 8 8 12 12 12 12

Outlet size selection (OD) 8 8 12 12 12 12

A - Height 31.4 {79.8} 27.5 {69.9} 27.0 {68.6} 31.0 {78.7} 34.0 {86.4} 36.4 {92.5}

B - Width 10.1 {25.7} 13.6 {34.5} 16.0 {40.6} 16.0 {40.6} 18.0 {45.7} 24.2 {61.5}

C - Depth 10.7 {27.2} 10.9 {27.7} 10.9 {27.7} 16.0 {40.6} 17.0 {43.2} 17 {43.2}

D - Height of discharge 1.75 1.5 2.0 1.0 2.0 1.0

nozzle above the heater box {4.4} {3.8} {5.1} {2.5} {5.1} {2.5}

E - Height of inlet nozzle 10.6 7.1 8 10 13 15.4

below the heater box {26.9} {18.0} {20.3} {25.4} {33.0} {39.1}

Installed weight lb {kg}‡38 {17} 37 {17} 78 {35} 93 {43} 102 {46} 131 {59}

Control center dimensions

Height - F 24.0 {61.0} 24.0 {61.0} 36.0 {91.4} 48.0 {122.0} 60.0 {152.4} 60.0 {152.4}

Width - G 24.0 {61.0} 24.0 {61.0} 30.0 {76.2} 36.0 {91.4} 42.0 {106.7} 42.0 {106.7}

Depth - H 10.0 {25.4} 10.0 {25.4} 10.0 {25.4} 10.0 {25.4} 12.0 {30.5} 12.0 {30.5}

Clearance for heat sink - I 3.0 {7.6} 3.0 {7.6} 3.0 {7.6} 3.0 {7.6} 3.0 {7.6} 3.0 {7.6}

Installed weight lb {kg} 150.0 {68.0} 150.0 {68.0} 180.0 {81.6} 250.0 {113.0} consult Conair consult Conair

Voltage Full Load Amps

400 V/3 phase/50-60 Hz 43.3 86.6 129.9 173.2 259.8 389.7

480 V/3 phase/50-60 Hz 37.7 75.4 113.1 150.8 226.2 339.3

575 V/3 phase/50-60 Hz 30.1 60.2 90.3 120.4 180.6 270.0

SPECIFICATION NOTES:

*The HTC model number reflects the kilowatts of each unit. For example, HTC-60 has a 60 kilowatt heater.

†The unit of measure WC is water column.

‡Weights are approximate.

Specifications may change without notice. Consult a Conair representative for the most current information.

TPDS022-0106

Description l 2-7

Specifications: HTC for Hot Air Dryers (HAD)

Description

MODEL HTC HTC-30B* HTC-30A* HTC-60A* HTC-90A* HTC-120A* HTC-180A*

Hot air dryer model 600 800 1000 1600 2400 3200 5000

Performance characteristics

Temperature range 120° - 250° F {49° - 121° C}

Flow rate cfm 300 400 500 800 1200 1600 2500

Pressure drop@flow rate

inches WC†3.0 5.0 3.2 5.4 6.1 6.4 8.0

{mm} WC†{76.2} {127} {81.2} {137.2} {155.0} {163.0} {203.2}

Dimensions inches {cm} and weight lb {kg}

Heater box dimensions

Inlet size (OD) 5 5 8 8 8 12

Outlet size selection (OD) 5 5 8 8 8 12

A - Height 31.4 {79.8} 27.5 {69.9} 27.5 {69.9} 32.0 {81.3} 31.0 {79.0} 34.0 {86.3}

B - Width 10.1 {25.7} 13.6 {34.5} 13.6 {34.5} 15.9 {40.4} 16.0 {40.6} 18.0 {45.7}

C - Depth 10.7 {27.2} 10.7 {27.2} 10.9 {28.0} 16.0 {40.6} 17.0 {43.2} 20.0 {50.8}

D - Height of discharge 0 {0} 5.9 {15.0} 2.0 {5.1} 1.0 {2.5} 2.0 {5.1} 1.0 {2.5}

nozzle above heater box

E - Height of inlet nozzle

below the heater box 8.0 {20.3} 11.4 {30.0} 8.0 {20.3} 11.0 {27.9} 13.0 {33.0} 13.0 {33.0}

Installed weight lb {kg} 37 {17} 58 {26} 78 {35} 93 {42} 102 {46} 131 {59}

Control center dimensions

F - Height 24.0 {61.0} 24.0 {61.0} 24.0 {61.0} 36.0 {91.4} 48.0 {122.0} 60.0 {152.4}

G - Width 24.0 {61.0} 24.0 {61.0} 24.0 {61.0} 30.0 {76.2} 36.0 {91.4} 42.0 {106.7}

H - Depth 10.0 {25.4} 10.0 {25.4} 10.0 {25.4} 10.0 {25.4} 10.0 {25.4} 12.0 {30.5}

I - Clearance for heat sink 3.0 {7.6} 3.0 {7.6} 3.0 {7.6} 3.0 {7.6} 3.0 {7.6} 3.0 {7.6}

Installed weight lb {kg} 150.0 {68.0} 150.0 {68.0} 150.0 {68.0} 180.0 {81.6} 250.0 {113.0} consult Conair

Voltage Current Amps

400V/3 phase/50-60 Hz 43.3 43.3 86.6 129.9 173.2 259.8

460 V/3 phase/50-60 Hz 37.7 37.7 75.4 113.1 150.8 226.2

575 V/3 phase/50-60 Hz 30.1 30.1 60.2 90.3 120.4 180.6

SPECIFICATION NOTES:

* The HTC model number reflects the kilowatts of each unit. For example, HTC-60 has a 60 kilowatt heater.

† The unit of measure WC is water column.

Specifications may change without notice. Consult a Conair representative for the most current information.

TPDS024-0106

2-8 l Description

Installation l 3-1

Installation

Unpacking the boxes . . . . . . . . . . . . . . . . . 3-2

Preparing for installation . . . . . . . . . . . . . . 3-3

Installation of the HTC control models

HTC 30, 60 and 90. . . . . . . . . . . . . . . . 3-3

Installation of the HTC control model

HTC 120. . . . . . . . . . . . . . . . . . . . . . . 3-4

Installation of the HTC control models

HTC 180 and 270. . . . . . . . . . . . . . . . . 3-4

Location and mounting of the HTC heater

assembly models 30, 60, and 90 . . . . . . 3-5

Location and mounting of the HTC heater

assembly model HTC 120 . . . . . . . . . . . 3-5

Location and mounting of the HTC heater

assembly models 180 and 270. . . . . . . . 3-5

Connecting the HTC heater assembly

to the dryer or blower and hopper . . . . . 3-6

Installing the isolation valves . . . . . . . . . . . 3-7

Connecting the power on models

HTC 180 and 270. . . . . . . . . . . . . . . . . 3-8

Connecting the control wires on

models HTC 180 and 270. . . . . . . . . . . 3-10

Connecting the RTD sensors . . . . . . . . . . . 3-11

Testing the installation. . . . . . . . . . . . . . . 3-15

SECTION

Installation

3-2 l Installation

Unpacking the Boxes

The HTC process air heater comes in two boxes. Depending on the model and

options ordered, the boxes could include:

Standard Equipment

•Heater assembly;

•Control center;

•1 insulated hose;

•1 non-insulated hose;

•4 hose clamps;

•2 RTD probes (1 process and 1 process protection);

•Blower (HAD models only).

Optional Equipment

•1 RTD probe (1 setback).

1Carefully remove all components from their shipping containers.

2Remove all packing material, protective paper, tape, and plastic.

3Carefully inspect all components to make sure no damage occurred during

shipping, and that you have all the necessary hardware.

4Take a moment to record serial numbers and electrical power specifications

in the blanks provided on the back of the the User Guide’s title page. The infor-

mation will be helpful if you ever need service or parts.

5You are now ready to begin installation. Follow the preparation steps on the

next page.

Installation

l 3-3

Description

Preparing for Installation

The HTC process air heater is easy to install, if you prepare the mounting area

properly.

1Make sure the mounting area provides:

❒❒ A grounded power source supplying the correct current for your

HTC model. All models require three-phase power. Check the HTC’s

serial tag for the correct amps, voltage, and cycles. Field wiring

should be completed by qualified personnel to the planned location for

the HTC. All electrical wiring should comply with your region’s elec-

trical codes.

❒❒ Minimum clearance for safe operation and maintenance.

The HTC control center should be mounted so that its display panel

can be seen and touched easily by an operator.

❒❒ Process air lines installed from the dryer to the HTC location. For

easy maintenance, we recommend using flexible hose to make the final

connection between the process outlet of the dryer or blower and the

HTC.

Installation of the HTC Control

Models HTC 30, 60, and 90

CAUTION: You are responsible for the structural integrity of this

installation.

NOTE: The HTC control is shipped mounted on the left side of the

floor stand on models 30, 60, and 90 (see figure to the right).

NOTE: If, by using your own provisions, you change the mounting

arrangement of the control center to a wall mount unit, it must be

mounted 6 inches off of the wall to provide clearance for the heat

sink.

✐

HTC Control

Center

3-4 l Installation

Installation of the HTC Control

Model HTC 120

CAUTION: You are responsible for the structural integrity of this

installation.

1Securely bolt the HTC control to the left side of the floor stand. Use the

supplied locking fasteners to securely mount the HTC control center to the floor

stand to prevent vibration-induced loosening.

NOTE: If, by using your own provisions, you change the mounting arrangement of the con-

trol center to a wall mount unit, it must be mounted 6 inches off of the wall to provide

clearance for the heat sink.

Installation of the HTC Control

Models HTC 180 and 270

CAUTION: You are responsible for the structural integrity of this installation.

1Move the control center into

its final location for operation

(see figure to the right). The

control center must be posi-

tioned close enough to the hop-

per to allow connection of the

RTD temperature probe.

The control center can be

mounted to a wall, the hopper

frame, or a floor stand with cus-

tomer provided provisions.

Note: If, by using your own provisions, you change the mounting arrangement of the control

center to a wall mount unit, it must be mounted 6 inches off of the wall to provide clear-

ance for the heat sink.

✐

HTC Control Center

(Free-Standing)

✐

HTC Control

Center

✐

Note: If the length of the

process and process protection

RTD is too short for your instal-

lation, contact Conair Parts

Department (800.458.1960) to

purchase an extension cable.

From outside the United States,

call 814.437.6861.

CAUTION: Always disconnect

and lock out the main power

sources before making electrical

connections. Electrical connec-

tions should be made only by

qualified personnel.

CAUTION: Check the discon-

nect with a volt meter to insure

that the power is off.

Installation l 3-5

Location and Mounting of the HTC

Heater Assembly Models HTC 30,

60 and 90

CAUTION: You are responsible for the structural integrity of this installation.

Note: The HTC heater assembly is shipped mounted to the back of the floor stand on

Models 30, 60 and 90 (see Figure to the right).

The heater is prewired to the control box on HTC Models 30, 60, and 90.

Location and Mounting of the HTC

Heater Assembly Model HTC 120

CAUTION: You are responsible for the structural integrity of this installation.

1Securely bolt the HTC heater assembly to the back of the floor stand (see

figure to the right). Use the locking fasteners provided to securely mount the

heater assembly to the floor stand to prevent vibration induced loosening.

The heater is prewired to the control box on HTC Model 120.

Location and Mounting of the HTC

Heater Assembly Models HTC 180

and 270

CAUTION: You are responsible for the structural integrity of this installation.

1Securely bolt the HTC heater assembly to the back of the floor stand (see

figure to the right). Use the locking fasteners provided to securely mount the

heater assembly to the floor stand to prevent vibration induced loosening.

2Refer to the wiring diagram to make the wiring connections for the heater

and control box. Also, see page 3-8, “Connecting the Power.” Only a quali-

fied electrician should make the wiring connections between the control and the

heater. The customer must supply the appropriately sized wire and conduit to

make connections.

✐

HTC Heater

IMPORTANT: Always refer to

the wiring diagrams that came

with your heater before making

electrical connections.

Description

Connecting the HTC Heater

Assembly to the Dryer or Blower

and Hopper

The inlet of the HTC heater assembly should be plumbed to the air source (usually

a blower or central dehumidification dryer). This inlet hose should be at least the

size of the heater inlet (lower) connection size (hoses provided). Also, the hose

should be as short and straight as possible to prevent unnecessary frictional losses.

This hose is the un-insulated and will normally be at ambient temperature plus 50

to 90°F. This hose should be properly supported so no weight will be on the

heater inlet connection.

The connection between the heater assembly outlet and the hopper should

be made with the supplied insulated hose. The insulation is important from

an energy standpoint and for personnel protection. Be careful not to block

off any heater sensor mounting locations.

Make sure all hoses are securely clamped to

prevent wasteful leaking. The hoses should be

routed neatly and supported where possible to

prevent undue stress on the heater and hopper

assemblies. Also, the bends should be made

with gradual radiuses. Sharp turns will cause

undue pressure drop.

✒TIP: Units with elliptical or oval shaped inlets or outlets require forming the hose to fit

this shape. When tightening the hose clamp, position the screw head on the long radius

portion of the duct.

Connect the filter sock or optional dust collector or cyclone to the hopper dis-

charge. Verify the connections are secure and do not leak.

NOTE: Do not allow the

flexible hoses to kink or

crimp.

✐

3-6 l Installation

Description

Installation l 3-7

Installing the Isolation Valves

NOTE: Isolation valves should be installed when multiple hoppers are connected

to a single dryer or blower.

1Turn the disconnect dial on the control center door to the Off or “O” posi-

tion. Lock out the main power (see Page 1-5 for complete lock out informa-

tion).

2Install one isolation valve in the return air line. Secure the hoses on the

valve with hose clamps.

3Install the other isolation valve in the delivery air line. Secure the hoses on

the valve with hose clamps.

O OFF

✐

3-8 l Installation

Connecting the Power on models

HTC 180 and 270

The electrical connection consists of bringing power into the control center and

wiring the heater power from the control center to the heater assembly. The incom-

ing power should match the rated nameplate power required on the serial tag on the

control center. This power should be clean and have a voltage variation of no more

than +/- 5% of the nameplate voltage. Unless the actual voltage is equal to the

nameplate voltage, the actual kW output of the HTC will vary slightly. The output

varies with the square of the voltage difference.

CAUTION: Always disconnect and lock out the main power sources before mak-

ing electrical connections. Electrical connections should be made only by quali-

fied personnel.

CAUTION: Check the disconnect with a volt meter to insure that the power is off.

1Disconnect and lock out the main power sources before making electrical

connections. Electrical connections should be made only by qualified personnel.

2Turn the disconnect dial on the control center door to the Off or “O” posi-

tion. Turn the captive screw, and swing the control center door open.

Insert the main power

cable through a knockout in the side of the control center.

Secure the power cable with a rubber compression fitting or strain relief or use

conduit. Verify that the incoming power is securely attached to the control center

and there is no strain on the incoming power.

Connect the power wires

to the three terminals at the top of the power disconnect

holder.

5Connect the ground wire to the ground lug.

Note: The connection between the heater and control center should be made with

properly sized conductors and properly protected with appropriate conduit (cus-

tomer supplied). The routing should be neat and away from potential mechanical

damage. The terminations should be landed on the terminals in the control center

and heater junction area. These terminations should be regularly checked to pre-

vent loosening and shorting to ground.

✐

IMPORTANT: Always refer

to the wiring diagrams that

came with your heater

before making electrical

connections.

O OFF

Installation l 3-9

Description

Connecting the Power (continued)

on models HTC 180 and 270

Insert the supplied heater power

wire through a knockout in the side or

bottom of the control center. Secure the wire with a rubber compression fit-

ting or strain relief if conduit is not used.

7Connect the heater power wires to the control center’s terminal block and

heater ground wire to the ground lug as shown.

Insert the other end of heater power

wire through the knockout in the side

of the heater assembly. Secure the wire with a rubber compression fitting or

strain relief if conduit is not used.

9Connect the heater power wires to the top terminals of the heater assem-

bly’s terminal block and heater ground wires to the ground lug as shown.

Power Wires

(Gray - Customer

Supplied)

Ground Wires

(Green - Customer

Supplied)

Ground Wires

(Green/Yellow)

Insert the Power

Wires Here

IMPORTANT: Always refer to

the wiring diagrams that

came with your heater before

making electrical connec-

tions.

3-10 l Installation

Connecting the Control Wires

Models HTC 180 and 270

Refer to the wiring diagram that came with your control.

2Insert the supplied control wires encased in conduit through a knockout in

the side or bottom of the HTC control center.

3Connect the high temperature and pressure switch wires to the control

center's terminal block.

4Insert the other end of the control wires through the knockout in one side

of the HTC heater assembly terminal box.

5Connect the high temperature and pressure switch wires to the heater

assembly terminal block.

Note: The connection between the heater and control center should be made with

properly sized conductors and properly protected with appropriate conduit (cus-

tomer supplied). The routing should be neat and away from potential mechanical

damage. The terminations should be landed on the terminals in the control center

and heater junction area. These terminations should be regularly checked to pre-

vent loosening and shorting to ground.

IMPORTANT: Always refer to the proper wiring diagram supplied with your

equipment before making electrical connections.

CAUTION: Always disconnect and lock out the main power sources before

making electrical connections. Electrical connections should be made only by

qualified personnel.

O OFF

✐

Installation l 3-11

Description

Connecting the RTD Sensors

The lower RTD could be the return air sensor for the

setback option if installed or the process protection

sensor depending on the configuration of the system.

The routing of the sensor cables should be neat and

not parallel with the power connections. When a sen-

sor cable must cross over power wiring, the intersec-

tion should be made at right angles to reduce the RFI

noise transmitted to the sensor cable.

Process Temperature RTD Probe

The RTD sensor connections should be made to the control center via the upper

female connections in the side of the control center. The process temperature RTD

is to be located in the hopper delivery air inlet. The connection is 1/8 NPT. The

sensor should be located ¼ to ¾ of the way in to the diameter of the inlet to obtain

the best temperature reading. The controller uses this RTD to monitor and control

the setpoint temperature.

CAUTION: Always disconnect and lock out the main power sources before mak-

ing electrical connections. Electrical connections should be made only by quali-

fied personnel.

1Turn the disconnect dial on the control center door to the Off or “O” posi-

tion. Lock out the main power (see Page 1-5 for complete lock out informa-

tion).

Insert the process RTD probe into the delivery

air inlet on the hopper.

Center the end of the

probe in the inlet so that the tip does not touch

the inlet tube walls. Tighten the nuts to lock the

RTD probe in place.

IMPORTANT: Always refer

to the wiring diagrams that

came with your heater

before making electrical

connections.

O OFF

(continued)

Connecting the RTD Sensors (continued)

Route the process temperature RTD cable to the control center. Plug the con-

nector into receptacle in the side of the control center labeled “Process”. Hand

tighten the connector. Coil any excess cable and secure it with a wire tie.

Process Protection RTD Probe

The optional process protection RTD probe is a safety sensor that prevents the

heater from overheating in case of a process temperature sensor failure or insulated

hose failure.

The process protection RTD sensor senses the temperature leaving the heater

assembly to prevent damage to the process or the product in the hopper. It gener-

ates an alarm (A-49 or A-50) and shuts the heater off if the air temperature exceeds

the process protection setpoint. The element for this sensor is to be mounted in the

heater assembly outlet nozzle before the insulated hose is connected.

CAUTION: Always disconnect and lock out the main power sources before making

electrical connections. Electrical connections should be made only by qualified

personnel.

1Turn the disconnect dial on the control center door to the Off or O posi-

tion. Lock out the main power (see Page 1-5 for complete lock out informa-

tion).

Insert the process protection RTD probe into the heater assembly outlet noz-

zle.

Center the end of the probe in the outlet so that the tip does not touch the

inlet tube walls. Tighten the nuts to lock the RTD probe in place.

3-12 l Installation

O OFF

Process

Protection

RTD

Probe

Description

Installation l 3-13

Connecting the RTD Sensors (continued)

Route the process protection RTD cable to the control center. Plug the con-

nector into the receptacle in the side of the control center labeled “Protection”.

Hand tighten the connector. Coil any excess cable and secure it with a wire tie.

Process Setback RTD Probe (Optional)

The optional process setback RTD probe is a sensor in the outlet of the hopper and

is normally supplied with a closed loop dehumidifying dryer system. The purpose

of the setback option is to reduce the energy consumption and prevent over drying

when material stops flowing through the hopper.

CAUTION: Always disconnect and lock out the main power sources before mak-

ing electrical connections. Electrical connections should be made only by quali-

fied personnel.

1Turn the disconnect dial on the control center door to the Off or O posi-

tion. Lock out the main power (see Page 1-5 for complete lock out informa-

tion).

Insert the process setback RTD probe into the hopper outlet.

Center the end

of the probe in the process air outlet of the hopper so that the tip does not touch

the outlet tube walls. Tighten the nuts to lock the RTD probe in place.

O OFF

Typical Hopper

Process

Setback RTD

Location

Process Air

Outlet

(continued)

✐

Note: If the length of the setback

RTD is too short for your installation,

contact Conair Parts Department

(800.458.1960) to purchase an

extension cable. From outside the

United States, call 814.437.6861.

3-14 l Installation

Connecting the RTD Sensors (continued)

Route the process setback RTD cable to the control center. Plug the connector

into the lower receptacle in the side of the control center. Hand tighten the con-

nector. Coil any excess cable and secure it with a wire tie.

Installation l 3-15

Description

Testing the Installation

You have completed the HTC installation. Now it’s time to make sure everything

works.

1Make sure there is no material in the hopper. If there is a loader or vacuum

receiver mounted on the hopper, disconnect the material inlet hose at the source.

2Perform the following safety checks:

•Make sure all components are securely mounted;

•Make sure all hoses are connected to the proper locations and secured

with hose clamps;

•Make sure all sensors are properly installed and secured:

•Make sure all wiring is secure and away from potential mechanical dam-

age;

•Make sure the air filter is clean and has a minimum of 6 in. (15.2 cm)

clearance without any flow obstructions; and

•Make sure the hopper outlet is free from obstructions that would cause

back pressure in the drying hopper.

3Perform a resistance test. Check the resistance leg to leg and leg to ground to

make sure that each heater and blower are wired correctly. The three legs

should have equal resistance +/- 5%. The resistance to ground should be 20

megohms or higher.

4Turn on the main power to the HTC. Make sure the disconnect dial is in the

ON position. This powers up the control and the display lights will illuminate.

For Hot Air Dryer (HAD) Models Only

5Bump (rapidly start and stop) the blower motor and verify the motor is

turning in the correct rotation according to the labels on the motor. If the

rotation is incorrect, shut off and lock out power and switch any two of the

three power legs on the line side of the disconnect provided with the blower.

6Check the discharge damper setting. The handle on the outlet of the blower

is connected to the discharge damper. This is required to be set to the proper

position to determine the proper airflow for the heater/hopper. Adjust the dis-

charge damper until the blower pressure is 20 to 30 in. W.C.

(continued)

O OFF

NOTE: See the blower specifi-

cations sheet in the appendix

for design supply pressure.

✐

3-16 l Installation

Testing the Installation (continued)

7Adjust the setpoint to the desired hopper inlet temperature. Use the

Setpoint Adjust ▲or ▼buttons to set the temperature. Move the heater enable

switch to the enable position. The temperature should stabilize around the set-

point and not significantly overshoot the set temperature.

8If everything is working properly, the heater’s LED flashes and the tem-

perature climbs towards the setpoint.

For Carousel Plus Dryers

5Reference the dryer manual and verify the dryer’s blower is running in the

correct direction and the dryer is ready for operation.

6Start the dryer.

7Adjust the setpoint to the desired hopper inlet temperature. Use the

Setpoint Adjust ▲or ▼buttons to set the temperature. Move the heater enable

switch to the enable position. The temperature should stabilize around the set-

point and not significantly overshoot the set temperature.

8If everything is working properly, the heater’s LED flashes and the tem-

perature climbs towards the setpoint.

Heaters

Startup /

Shutdown

For Startup:

1. With heaters in

Standby, turn on

blower or dryer.

2. Enable heaters.



For Shutdown:

1. Switch heaters to

Standby. 

2. Wait 60 seconds

before turning off

blower or dryer.

Enable

Standby

Setpoint Adjust

Buttons

SECTION

Operation

The HTC process air heater: control

panel DC . . . . . . . . . . . . . . . . . . . . . . 4-2

HTC DC control functions . . . . . . . . . . . . . . 4-3

Control function flow charts . . . . . . . . . . . . 4-3

Control function descriptions . . . . . . . . . . . 4-6

HTC DC control alarms . . . . . . . . . . . . . . . 4-19

Initial operation (for HAD only) . . . . . . . . . 4-20

Initial operation (for Carousel Plus

dryer HTC) . . . . . . . . . . . . . . . . . . . . 4-21

Autotuning . . . . . . . . . . . . . . . . . . . . . . . 4-22

Normal operation to start heating. . . . . . . . 4-24

Normal operation to stop heating . . . . . . . . 4-25

Operation l 4-1

Heaters

Startup /

Shutdown

For Startup:

1. With heaters in

Standby, turn on

blower or dryer.

2. Enable heaters.



For Shutdown:

1. Switch heaters to

Standby. 

2. Wait 60 seconds

before turning off

blower or dryer.

Enable

Standby

4-2 l Operation

The HTC Process Air Heater: Control Panel DC

Heater

Enable/Standby

Also is used to reset

shut down alarms (see

“Troubleshooting”

Section 6) and to

“Autotune” the con-

troller (see

“Autotuning” Section

4).

Setpoint

Display

Shows the set-

point value.

Increment/Decrement

Buttons

Used to increase or decrease values.

Actual

Display

Shows the actual

temperature value.

Acknowledge Alarm Button

Under an alarm condition, pushing the

Acknowledge button once turns off the

horn and displays the alarm message.

Pushing the Acknowledge button a sec-

ond time turns off the alarm LED.

Scroll Button

Press to scroll

through the

closed loop menu

list. Pressing the

Scroll button

moves you down

the list.

HTC DC Control Functions

HTC functions are values that you can set or monitor. Press the Scroll button until

the function you want to set or monitor appears in the LED display.

Control Function Flow Charts

The following flow charts provide a quick summary of the control functions. For

an explanation of each control function, see Control Function Descriptions.

Operation l 4-3

Operation

POWER ON

1888 888

2 sec All LEDs On

2 dC 004

2 sec Software Version

3res in



(Default Screen)

4250 250

Process Setpoint and Actual Temp (Default Screen)

Press + or - to change setpoint.

Press Scroll Button for Process Deviation Alarm Setpoint (Dev)

55dEv

+ or - Deviation Band

Press + or - to change setpoint.

Press Scroll to enter the value

Process Screens Process Protection Screens

Press Scroll Button and + key at the Press Scroll Button and + key at the

same time for 2 sec to get in. same time again for 2 sec to get in.

To get out at any time Press Scroll To get out at any time Press Scroll

button and - key at the same time button and - key at the same time

2 Min timer then return to the default screen

6Pro cES 16 Pro tEc

Press Scroll again to view next screen Press Scroll again to view next screen

7375 Hi.L

Process High Limit

17 Act 250

Protect Temperature

Press Scroll again to view next screen Press Scroll again to view next screen

83 Lbb

Process Loop Break Band

18 625 H.Al

Protect Hi Alarm SP

Press Scroll again to view next screen Press Scroll again to view next screen

910 Lbt

Process Loop Break Time

19 10 H.dL

Protect Hi Alarm Delay

Press Scroll again to view next screen Press Scroll again to view next screen

10 385 H.AL

Process High Alarm Setpoint

20 300 d.AL

Differential Alarm SP

Press Scroll again to view next screen Press Scroll again to view next screen

11 50 Pb

Process Prop

21 80 d.dL

Differential Alarm Delay

Press Scroll again to view next screen

12 16 int

Process Integral

Press Scroll again to view next screen

Press Scroll again to view the first screen

13 2dEr

Process Derivative

Press Scroll again to view next screen

14 tun OFF

Process Autotune

Press + Key to Start Autotune

Press Scroll again to view next screen

15 F unt

Units degrees F or degrees C

Press + Key to toggle between F and C

Press Scroll again to view the first screen



Press Scroll Button again for Setback

Return Temperature Setpoint

5A 180 Srt

Press Scroll Button again for Process

Setback Temperature Setpoint

5B 140 PSt

Press Scroll to enter the value

(Optional)

Press + or - to change setpoint.

Press Scroll to enter the value

Press + or - to change setpoint.

4-4 l Operation

Operation

Setup Screens Test Mode Screens

Press Scroll Button and + key at the

same time for 10 sec to get in.

To get out at any time Press Scroll To get out at any time Press Scroll

button and - key at the same time button and - key at the same time

SEt uP 43 tE St

Press Scroll again to view next screen Press Scroll again to view next screen

tyP Res

Controller Type

44 in.1 OFF

Digital Input 1 status

Press Scroll again to view next screen Press Scroll again to view next screen

Prt ON

Process Protection Install

Press Scroll again to view next screen

47 in.4 ON

Digital Input 4 status

Press Scroll again to view next screen

50 ou.3 OFF

Press + key to jog output 3

Press Scroll again to view next screen

52 ou.5 OFF

Press + key to jog output 5

Press Scroll again to view next screen

53 ou.6 OFF

Press + key to jog output 6

Press Scroll again to view the first screen

* The test mode screens become

visable if tSt (screen 41) is turned on.

Setback Setup Screens

Press Scroll Button and + key at the

same time again for 2 sec to get in.

To get out at any time Press Scroll

button and - key at the same time

Set bAc

Press Scroll again to view next screen

Stb OFF

Setback Install

tSt OFF

Goto Test Mode

Press Scroll again to view next screen

Ld.d OFF

Load Default

Press + Key to Load Default

Press Scroll again to view the first screen

ret 250

Press Scroll again to view next screen

20 ban

Press Scroll again to view next screen

10 sls

Press Scroll again to view next screen



Ldr 0

Press Scroll again to view next screen



2 P.dL

Press Scroll again to view next screen

35A

10 A.dL

Press Scroll again to view next screen

Add res

0 500

24 501

2 502

4 504

23 503

Id 1

Not applicable to the HTC

Press Scroll again to view next screen



45 in.2 OFF

Digital Input 1 status

Press Scroll again to view next screen

34A

Sbt OFF

Press Scroll again to view next screen



34B

SbL OFF

Press Scroll again to view next screen



Operation l 4-5

4-6 l Operation

General Screens

SCREEN 1

SCREEN 2

SCREEN 3

SCREEN 4

Setpoint Actual

SCREEN 5

888

Function

Control Function Descriptions

888

dC 004

res in

250 250

20 dEv

Once the power is turned on, this screen is

displayed for 2 seconds while the control

performs its self-checking process. All

LEDs are illuminated during this 2-second

interval.

After the self-checking process is com-

plete, this screen flashes for 2 seconds and

displays the software version.

After the software version is displayed,

this screen appears for 2 seconds and iden-

tifies that the control is setup for a wheel

dryer (2) or HAD.

This is the default screen. It shows the

process air temperature setpoint and the

actual temperature measured at the inlet to

the drying hopper. The “+/-” buttons can

be used to change the setpoint. Holding the

“+/-” buttons in will cause the number to

ramp up or down faster the longer the but-

ton is held. The display will return to the

default screen from anyplace in the menu

structure if nothing is done for 10 minutes.

This is the process deviation temperature

alarm setpoint screen. It is used to set the

deviation temperature band around the

process temperature setpoint. The range is

5 - 20°F (2.8 - 11.1°C). The “+/-” buttons

can be used to change the setpoint. If the

temperature goes outside the band, the

control will display a passive alarm (P1).

Operation l 4-7

General Screens

SCREEN 5A

SCREEN 5B

Function

Control Function Descriptions (continued)

Setback Screen 1 (Setback Setpoint).

When setback is enabled, this is the hopper

outlet temperature at which the setback

becomes active.

Setback Screen 2 (Process Setpoint). The

process setpoint is the temperature the con-

trol tries to maintain when functioning in

the setback mode.

180 Srt

140 PSt

NOTE: Setback is optional.

✐

Operation

To access the process screens, press the

“Scroll” and “+” buttons at the same time

and hold for two seconds . To get out of

the Process screens at any time, press the

Scroll and “-” buttons at the same time.

After two minutes, you will be returned to

the Default screen.

This is the process header screen. It indi-

cates that all items below it pertain to the

process temperature control.

This is the process high limit screen. It is

used to set the high limit for the process

temperature setpoint. The “+/-” buttons

can be used to change this value. If set at

250°F, the operator cannot set the process

setpoint above 250°F.

This is the process loop break band screen.

It is used to set the temperature band for

the loop break alarm. The “+/-” buttons

can be used to change the setpoint. If out-

side the deviation band, if the actual tem-

perature does not move toward the setpoint

by this value in the time value in screen 9,

a loop break alarm will occur.

Process Screens

SCREEN 6

SCREEN 7

SCREEN 8

Pro

Function

Control Function Descriptions (continued)

cES

250 Hi.L

3Lbb

4-8 l Operation

Operation

Operation l 4-9

This is the process loop break time screen.

It is used to set the temperature band time

for the loop break alarm. The “+/-” but-

tons can be used to change the temperature

band time. When the actual temperature is

outside the deviation band, if the tempera-

ture is not moving toward the setpoint at a

rate greater than or equal to the value in

screen 8, page 4-8, for the time value in

this screen (sec.), then the heater will

alarm on loop break. Once the actual tem-

perature is within the deviation band, the

loop break is ignored.

This is the process alarm high temperature

setpoint screen. It is used to set the tem-

perature at which the process high temper-

ature shutdown alarm (A1) will shutdown

the heater and display the alarm. The “+/-”

buttons can be used to change the setpoint.

This is the process proportional band

screen. It is used to change the propor-

tional band value for the process control

loop. The “+/-” buttons can be used to

change the proportional band setpoint.

This is the process integral screen. It is

used to change the integral value for the

process control loop. The “+/-” buttons

can be used to change the integral value

setpoint.

This is the process derivative screen. It is

used change the derivative value for the

process control loop. The “+/-” buttons

can be used to change the derivative value

setpoint.

(continued)

Process Screens

SCREEN 9

SCREEN 10

SCREEN 11 *

SCREEN12 *

SCREEN 13 *

Function

Control Function Descriptions (continued)

10 Lbt

250 H.AL

50 Pb

16 int

2dEr

*These parameters will be

automatically adjusted

by the autotune proce-

dures. Conair does not

recommend they be

adjusted individually.

4-10 l Operation

Process Screens

SCREEN 14

SCREEN 15

Function

Control Function Descriptions (continued)

This is the process heater autotune screen.

(See page 4-22 for detailed information on

the autotune function.) The autotune pro-

cedure should be performed when setting

up the system the first time or if the con-

trol is inconsistent. Autotuning may take a

minute or so to complete. When finished,

the display will read “don”. The new PID

values are automatically saved (to screens

11, 12, and 13).

This is the temperature units screen. It is

used to change the temperature display

from °F to °C or °C to °F.

tun OFF

Funt

Operation l 4-11

Operation

Function

Control Function Descriptions (continued)

Process

Protection

Screens *

SCREEN 16

Protection

SCREEN 17

SCREEN 18

When at screen 6, page 4-8, (or the process

screens), to access the process protection

screens, press the “Scroll” and “+” buttons

at the same time and hold for two seconds

from the Process screens. To get out of the

Process protection screens at any time, press

the “Scroll” and “-“ buttons at the same

time. (Refer to the flow charts on pages 4-4

and 4-5.)

This is the process protection header

screen. It indicates that all items below it

pertain to the process protection actual

temperature and alarms.

This screen shows the actual temperature

measured at the process protection RTD.

This is the process protection high temper-

ature alarm setpoint screen. If the actual

process protection temperature exceeds

this setpoint for the length of the process

protection high alarm delay (screen 19,

page 4-12), the process protection alarm

(A49) will trigger and the heater will shut-

down. For example if the actual process

protection temperature exceeds 625°F

(330°C) for 10 seconds, the heater will

execute a shutdown alarm. The +/- buttons

can be used to change the setpoint.

ProtEc

Act 250

625 H.AI

(continued)

* Accessed from the Process

Screens.

4-12 l Operation

Function

Control Function Descriptions (continued)

Process

Protection

Screens

SCREEN 19

SCREEN 20

SCREEN 21

This is the process protection high alarm

delay screen. It is used to set the delay

time for the process protection high tem-

perature alarm. If this time delay is

exceeded, the heater will execute a shut-

down alarm (A49). The “+/-” buttons can

be used to change the setpoint.

This is the process differential alarm set-

point screen. If the actual process protec-

tion temperature (screen 17, page 4-11)

minus the actual process temperature

(screen 4, page 4-6) exceeds this setpoint

for the length of the process differential

alarm delay (screen 21), this alarm (A50)

will trigger and the heater will shutdown.

For example if the actual process protec-

tion temperature is 450°F (232.2°C) and

the actual process temperature is 124°F

(51.1°C) for 180 seconds (default) or the

time set on Screen 21, the heater will exe-

cute a shutdown alarm (A50). The “+/-”

buttons can be used to change the setpoint.

This is the process differential alarm delay

screen. This screen is used to change the

process differential alarm delay time. The

“+/-” buttons can be used to change the

setpoint.

180 d.dL

10 H.dL

325 d.AL

* Accessed from the Process

Screens.

Operation

Operation l 4-13

Function

Control Function Descriptions (continued)

DC Resin Setup

Screen

SCREEN 30

SCREEN 31

SCREEN 32

To access the DC resin setup screens, press

the Scroll and “+” buttons at the same time

and hold for two seconds from the Process

Protection screens (screen 16). To get out

of the DC resin setup screens at any time,

press the Scroll and “-“ buttons at the same

time.

This is the setback option setup screen. It

indicates that all items below it pertain to

the setback option.

This shows the actual return air tempera-

ture measured at the hopper outlet.

This shows the setback return band setting.

The value is used to determine when the

setback mode is disabled,once the dryer

has gone into the setback mode. This

example indicates a 20° band width, which

means when your hopper outlet tempera-

ture is 20° below your setpoint, the dryer

will come out of setback mode.

Set bAc

ret 250

20 ban

4-14 l Operation

Function

Control Function Descriptions (continued)

DC Resin Setup

Screen

SCREEN 33

SCREEN 34

SCREEN 34A

SCREEN 34B

This is the setback load rate setpoint. (Not

available at this time.)

This is the load rate reading. (Not available

at this time.)

This is the setback on temperature. It turns

the setback on temperature option on or

off.

This controls the setback on load rate func-

tion. It turns the setback on load rate

option on or off. (Not available at this

time.)

10 sls

Ldr 0

Sbt OFF

SbL OFF

Operation

Operation l 4-15

Function

Control Function Descriptions (continued)

DC Resin Setup

Screen

SCREEN 35

SCREEN 35A

This is the process heater alarm delay. It

is used to delay the process heater alarm.

This number is the delay time in seconds

that an alarm will occur on loss of process

heat.

This is the airflow alarm delay. It is used

to delay the airflow alarm. This number is

the delay time in seconds that an alarm

will occur on loss of airflow.

2P.dL

10 A.dL

4-16 l Operation

Function

Control Function Descriptions (continued)

Setup Screens

SCREEN 36

SCREEN 37

SCREEN 38

Screen 39

Screen 41

Screen 42

To access the setup screens, press the

Scroll and “+” buttons at the same time

and hold for ten seconds from the Process

screens. To get out of the setup screens at

any time, press the Scroll and “-“ buttons

at the same time.

This is the initial setup screen. It indicates

that all items below it pertain to the heater

setup.

This screen indicates the hardware to the

controller. It will say “Res”.

This screen turns the process protection off

and on. The HTC is shipped with this

function set to “On” unless the HTC is

sold with an HAD.

For HAD and “W” dryer models only.

This screen turns the setback “On” or

“Off”. The HTC is shipped with function

set to “On” if the setback option is

installed.

This screen lets you access the Test

Mode.To access the test mode screens,

press "+" button when you are in the test

screen. To get out of the test mode screens

at any time, press the Scroll and "-" but-

tons at the same time.

This screen returns the control board to the

factory default settings (not necessarily for

a specific model). Conair does not recom-

mend using this function unless instructed

to by a Conair Service Technician.

Set uP

tyP Res

Prt ON

Stb OFF

tSt OFF

Ld.d OFF

The setting on screen 42

should not be changed with-

out the direction of Conair

Service Personnel.

Control Function Descriptions (continued)

Test Mode

Screens

SCREEN 43

SCREEN 44 *

SCREEN 45

SCREEN 47

Function

To access the test mode screens, press "+"

button when you are in the test screen

(screen 41). To get out of the test mode

screens at any time, press the Scroll and "-"

buttons at the same time.

This is the Test Mode screen. While in the

test mode, you can see the status of the

inputs and outputs and you can toggle the

outputs on or off by pressing the up and

down arrow keys on the control.

This screen shows the state of digital input 1.

If the input is open, "OFF" will be displayed.

If the input is closed, "ON" will be dis-

played. Digital input 1 on a heater is the

process high temperature switch. This

switch is closed during normal operation. It

opens when it detects a high temperature

inside the process heater tube.

This is the heat enable/disable screen. It

shows the state of digital input 2. If the

input is open, "OFF" will be displayed. If

the input is closed, "ON" will be displayed.

This is the differential pressure (flow switch)

screen. It shows the state of digital input 4.

If the input is open, "OFF" will be displayed.

If the input is closed, "ON" will be dis-

played.

(continued)

in.1 OFF

tE St

in.4 ON

Operation l 4-17

Operation

in.2 ON

*See the supplied electrical draw-

ings to associate instruments to

inputs.

4-18 l Operation

Control Function Descriptions (continued)

Test Mode

Screens *

SCREEN 50

SCREEN 52

SCREEN 53

Function

This is the output 3 screen. Press the "+"

key to jog output 3. Output 3 on a heater

is the process heater solid-state relay sig-

nal. Pressing the "+" key will cause the

process solid-state relays to fire. You can

observe the solid-state relay LED to check

this output. Since the isolation contactor is

open, the heater does not come on because

it does not have power.

This is the output 5 screen. Press the "+"

key to jog output 5. Output 5 on a heater

is the process heater power isolation con-

tactor signal. Pressing the "+" key will

cause the isolation contactor to close.

Watch the isolation contactor pull in to

check this output. Since the solid-state

relays are not on, the heaters does not

come on because they do not have power.

This is the output 6 screen. Press the "+"

key to jog output 6. Output 6 on a heater

is the alarm horn. Pressing the "+" key

will cause the alarm horn to sound.

ou.3 OFF

ou.6 OFF

ou.5 OFF

* Outputs 1, 2, and 4 are not used

in the HTC.

Operation l 4-19

Operation

HTC DC Control Alarms

PASSIVE ALARMS

Passive alarms flash the alarm code and display process temperature until the

alarm condition goes away, or it becomes a shutdown alarm.

Code Description Alarm LED

P1 Process Temperature Deviation Blinking Red

SHUTDOWN ALARMS

Shutdown alarms flash the alarm code and display process temperature. The HTC

process air heater should stop when the process temperature is below 150°F

(65.6°C) but should still flash the alarm code until the Acknowledge Alarm button

is pressed. If the alarm condition is still active, the HTC cannot start, it will flash

the alarm code again. If the alarm condition is not active, the display should return

to the normal default screen display and the HTC is ready to run.

Alarms place the control in “standby” mode. After the alarm is corrected and

acknowledged, cycle the heater Standby/Enable switch to “Standby” then back to

“Enable” to restart the process control.

Code Description Alarm LED

A1 Process High Temperature Solid Red

A2 Process Temperature Loop Break Solid Red

A3 Process Heater Box High Temperature Solid Red

A10 RTD Integrity Solid Red

A39 EEProm Write Error-Internal Control Solid Red

Board Problem

A49 Process Protection High Alarm Solid Red

A50 Process Differential Alarm Solid Red

4-20 l Operation

Initial Operation (For HAD Only)

1Hopper material: Fill the hopper with the material to be heated.

2Blower inlet filter: Verify that the area around the inlet filter is clean and free

of debris. This will extend the time between service of this filter.

3Air discharge from the hopper: Verify that the sock filter hose connection to

the dust collector connections are secure and do not leak.

4Setting of damper after material: The damper valve will need to be opened

to adjust the flow back down to 20 in. W.C. on the pressure gauge. This setting

is a suggested setting. If the airflow in the hopper is carrying over material out

of the hopper, then the flow rate may be adjusted downward by closing the

damper. If the airflow is too low then the heater will go into stand by. If the

airflow is too high, the setpoint might not be achievable.

WARNING: Fire potential - The electric heating elements are exposed to the air

going into the hopper. It is important that there is no debris in this air stream. Under

no circumstances should the HTC be run in a dirty air stream as material passing

through the heater could ignite embers and shoot sparks into the hopper, which could

catch fire.

5Auto tuning: When the unit is fully assembled and ready for operation, it

should be tuned to the actual system that it is connected to with material in the

hopper. Follow the auto tuning procedure detailed on page 4-22 of this manual.

6Hopper residence time: The material throughput rate must be determined by

the size of the hopper, the drying time required, and the extent of drying desired

for the product.

Initial Operation (For Carousel Plus

Dryer HTC)

1Hopper material: Fill the hopper with the material to be heated.

WARNING: Fire potential - The electric heating elements are exposed to the air

going into the hopper. It is important that there is no debris in this air stream. Under

no circumstances should the HTC be run in a dirty air stream as material passing

through the heater could ignite embers and shoot sparks into the hopper, which could

catch fire.

2Auto tuning: When the unit is fully assembled and ready for operation, it

should be tuned to the actual system that it is connected to with material in the

hopper. Follow the auto tuning procedure detailed on page 4-22 of this manual.

3Hopper residence time: The material throughput rate must be determined by

the size of the hopper, the drying time required, and the extent of drying desired

for the product (see page 4-20).

Operation l 4-21

Operation

4-22 l Operation

Autotuning

Follow the procedure below to “Autotune” the HTC.

1Use the selector switch and put the HTC control into “Standby”.

2Adjust the setpoint to a “Normal” setting.

3Establish the normal operating air flow.

4Access the Process menu by pressing and holding the Scroll and Plus

keys for 2 seconds until “Process” is displayed.

5Press the Scroll key until “Tune Off” is displayed.

6Press the Plus key and “Tune Set” is displayed. If the control remains on

screen 6, the difference between the setpoint and the actual temperature is not

at least the required minimum.

7Enable the heater after the system stabilizes. The following will display

when autotuning starts.

8When autotune is complete, “Tune Done” is displayed and the heater is

placed in the Standby mode.

9Note the “Pb”, “int”, and “dEr” values (screens 11, 12, and 13).

Pro cES

tun OFF

tun SEt

tun Hr.u

tun don

✒Tip: Conair recommends

that the autotune should

be run from a cold start.

The minimum temperature

difference between the

start temperature and the

autotune and setpoint tem-

perature you will be run-

ning should be 50ºC

(122ºF).

Operation l 4-23

Autotuning (continued)

10 To return to the normal control, cycle the heater to Standby and then

back to Enable.

11 If “Tune Error 1” is displayed, the autotune was not successful and the

process must be repeated. The most likely reason for this error is that the

difference between the starting temperature and the autotune tempera-

ture was not at least 50ºC (122ºF).

tun Er.1

Operation

Normal Operation To Start Heating

1Determine what the HTC’s setpoint must be for your process and material.

2Make sure there is material in the hopper.

3Start the dryer or process blower to begin air flow. Set the proper flow on

the blower if equipped.

4Turn on the main power to the HTC.Make sure the HTC’s disconnect dial

is in the ON position. This powers up the control and the display lights will

illuminate.

5Set the drying temperature. Press the Adjust Setpoint ▲ or t buttons to

select the temperature.

7Turn the heater switch to “Enable” to start heating.

O OFF

Heaters

Startup /

Shutdown

For Startup:

1. With heaters in

Standby, turn on

blower or dryer.

2. Enable heaters.



For Shutdown:

1. Switch heaters to

Standby. 

2. Wait 60 seconds

before turning off

blower or dryer.

Enable

Standby

Setpoint Adjust

Buttons

4-24 l Operation

Operation

Operation l 4-25

Normal Operation To Stop Heating

1Turn the heater to “Standby”.

IMPORTANT: Always turn off the HTC BEFORE the dryer or process blower.

2Allow the HTC to cool to below 100°F (37.8°C).

3Turn off the blower or dryer.

4Be sure to disconnect and lockout the main power if you have stopped the

HTC to perform maintenance or repair.

CAUTION: Improper shut down can cause damage to your heater.

Heaters

Startup /

Shutdown

For Startup:

1. With heaters in

Standby, turn on

blower or dryer.

2. Enable heaters.



For Shutdown:

1. Switch heaters to

Standby. 

2. Wait 60 seconds

before turning off

blower or dryer.

Enable

Standby

4-26 l Operation

Maintenance

Preventative maintenance checklist . . . . . . . 5-2

SECTION

Maintenance

Maintenance l 5-1

5-2 l Maintenance

Preventative Maintenance

Checklist

The HTC process air heater requires little maintenance. We recommend the fol-

lowing maintenance schedule and tasks.

• Whenever you change material or process

❒❒Change the HTC setpoint if it must be changed.

• Daily or weekly as needed

❒❒Inspect the inlet and outlet hoses.

Tighten the hose clamps if loose. Replace the hose if worn or damaged.

❒❒Inspect the filter (if equipped).

Clean or replace the filter as necessary.

• Monthly or as often as needed

❒❒Inspect the main power wires, heater wires and conduit, and RTD

probe wires for damage and wear.

Replace any damaged or worn wire or conduit.

❒❒Check for any damage to the control panel.

Replace if damaged.

❒❒Check for damage to the heater box.

Replace if damaged.

❒❒Clean dirt from exterior surfaces with a cloth dampened with water.

Troubleshooting

Before beginning. . . . . . . . . . . . . . . . . . . . 6-2

A few words of caution . . . . . . . . . . . . . . 6-3

DIAGNOSTICS

How to identify the cause of a problem . . . . 6-4

Shut down alarms . . . . . . . . . . . . . . . . . . 6-5

Passive alarms . . . . . . . . . . . . . . . . . . . . 6-8

REPAIR

Replacing fuses . . . . . . . . . . . . . . . . . . . . 6-9

Checking heater solid state relays . . . . . . . 6-10

Checking or replacing temperature

sensors . . . . . . . . . . . . . . . . . . . . . . 6-11

Replacing the heating elements . . . . . . . . 6-12

Replacing the air flow differential

pressure switch. . . . . . . . . . . . . . . . . 6-14

SECTION

Troubleshooting

Troubleshooting l 6-1

Before Beginning

You can avoid most problems by following the recommended installation and

maintenance procedures outlined in this User Guide. If you do have a problem,

this section will help you determine what caused it and how to fix it.

Before you start disassembling the HTC process air heater be sure to:

❏Diagnose causes from the control panel.

1Press the Acknowledge Alarm button to silence the alarm.

2Address the alarm message and fix the problem.

3Move the heater switch from Enable to Standby.

4Cycle the heater switch from Standby to Enable to restart normal con-

trol. If the alarm reappears the problem was not fixed.

If the alarm is a passive alarmyou will see Pin the screen title display.

If the alarm is a shut down alarm you will see Ain the screen title

display.

❏Diagnose causes from the control panel.

You can locate any problem from the front of the heater.

Heaters

Startup /

Shutdown

For Startup:

1. With heaters in

Standby, turn on

blower or dryer.

2. Enable heaters.



For Shutdown:

1. Switch heaters to

Standby. 

2. Wait 60 seconds

before turning off

blower or dryer.

Enable

Standby

Acknowledge

Alarm Button

Scroll

Button

6-2 l Troubleshooting

Before Beginning (continued)

❏Find the wiring and equipment diagrams that were shipped with your heater. These dia-

grams are the best reference for correcting a problem. The diagrams also will note any custom

features, such as special wiring or alarm capabilities, not covered in this User Guide.

Troubleshooting

A Few Words of Caution

The HTC process air heater is equipped with numerous safety devices. Do

not remove or disable them. Improper corrective action can lead to hazardous

conditions and should never be attempted to sustain production.

WARNING: Only qualified service personnel should examine and correct

problems that require opening the dryer’s control center or using electri-

cal wires to diagnose the cause.

WARNING: High voltage.Always stop the HTC process air heater, discon-

nect and lock out the main power source before troubleshooting or per-

forming repairs.

CAUTION: Hot surfaces. Always protect yourself from hot surfaces inside

and outside of the heater.

Troubleshooting l 6-3

See warnings

below.Open the

control center to

check fuses and

heater contactors.

6-4 l Troubleshooting

How to Identify the Cause of a

Problem

Most heater malfunctions are indicated by an illuminated Alarm light on the HTC

process air heater control panel.

A problem can trigger two types of alarms:

•Shut Down: The heater has automatically shut down because it detected a

serious problem that could damage your material or dryer.

•Passive: The heater continues to operate, but warns of a problem that could

prevent correct heating of your material. If ignored, this problem could lead to

a condition that will shut down the dryer.

When the alarm light is displayed:

1Press the Acknowledge Alarm button to silence the alarm (see page

4-2).

2Find the error message in the diagnostics table of this Troubleshooting

section.

3Cycle the heater switch from Enable to Standby and then back to

Enable to clear and restart normal control. If the alarm reappears, the

problem was not fixed.

Heaters

Startup /

Shutdown

For Startup:

1. With heaters in

Standby, turn on

blower or dryer.

2. Enable heaters.



For Shutdown:

1. Switch heaters to

Standby. 

2. Wait 60 seconds

before turning off

blower or dryer.

Enable

Standby

Alarm Light

Acknowledge Alarm

Button

Troubleshooting

Shut Down Alarms

If the red Acknowledge Alarm LED is solid, the alarm is a shutdown alarm.

The heater will shutdown automatically to prevent damage to the equipment

or personnel.

Possible cause

The process high temperature is not at

least 10°F (5.6°C) above the setpoint.

The RTD temperature probe is not

installed correctly.

The air lines are restricted or loose.

SSR has failed.

Output on the board has failed.

Process RTD is loose or has fallen out.

The process heater has failed.

The air lines are restricted or loose.

Output on the board failed “Open”.

Drying or setback setpoint is too low.

Solution

Increase the process high temperature.

Make sure the RTD temperature probe

tip is in the center of the hopper inlet

tube.

Straighten any crimps in the hoses.

Tighten any loose hoses.

Replace the SSR.

Replace the board.

Check the process RTD and tighten if

needed.

Check the heater fuses, and resistance

across each leg of the process heater.

Straighten any crimps in the hoses.

Tighten any loose hoses.

Replace the board.

Adjust the setpoint.

Add additional cooling, either a pre-

cooler or an aftercooler, to the circuit.

Problem

A1 Process High

Temperature – If the process

temperature exceeds the

process high temperature set-

point, it shuts down the dryer.

Defaults are set to 385°F

(196.1°C) for 20 sec. for CP

HTCs, and 360°F (182.2°C)

for 20 sec. for HADs.

A2 Process Temperature

Loop Break – If the process

temperature is outside of the

operator entered deviation,

alarm band (see Process High

Temperature Deviation passive

alarm) and the process tem-

perature is not moving

towards the setpoint at a rate

greater than specified. It shuts

down the dryer. Defaults are

set at 3°F (1.7°C) over 20 sec.

(continued)

Troubleshooting l 6-5

6-6 l Troubleshooting

Shut Down Alarms (continued)

Problem

A3 Process Heater High

Temperature – The snap switch

in the process heater tube

opens due to excessive temper-

ature.

A10 RTD Integrity – If a

RTD is faulty.

A39 EEProm Write Error.

Possible cause

There is an air flow blockage or loose

hoses.

The isolation contactor failed in the

closed position.

The heater solid state relays (SSRs)

failed.

No air flow or the airflow is reversed.

The connection in the electrical enclo-

sure for the RTD is loose.

The connection of the RTD plug on the

control board is loose.

One of the RTDs has failed.

The RTD is enabled but wired incorrect-

ly.

Internal control board problem.

Solution

Remove the blockage.

Tighten any loose hoses.

Replace the isolation contactor.

Replace the failed heater solid state

relays (SSRs).

Turn on the blower.

Reverse the connection points of the

hoses.

Check the operation of the differential

pressure switch.

Check the RTD plug connection and

tighten if needed.

Check the plug connection and tighten if

needed.

Replace the RTD.

Move the wires to the proper terminals

(see the wiring diagrams supplied with

the unit).

Replace the control board.

Troubleshooting l 6-7

Shut Down Alarms (continued)

Problem

A49 Process Protection

High Temperature – If the

process protection temperature

exceeds the process protection

high temperature setpoint, it

shuts down the dryer. Defaults

are set to 600°F (315.6°C) for

10 sec. for larger HTCs and

400°F (204.4°C) for 10 sec.

for smaller HTCs.

A50 Process Protection

Differential Temperature – If

the process protection differen-

tial temperature exceeds the

process protection differential

temperature setpoint, it shuts

down the dryer. Defaults are

set to 175°F (325°C) for

180 sec. (see screen 21, page

4-12).

Possible cause

The Process RTD temperature probe is

not installed correctly.

The air lines are restricted or loose.

The Process RTD or Process Protection

RTD temperature probe is not installed

correctly.

The air lines are restricted or loose.

Solution

Make sure the RTD temperature probe

tip is in the center of the hopper inlet

tube or heater manifold.

Straighten any crimps in the hoses.

Tighten any loose hoses.

Make sure the RTD temperature probe

tip is in the heater outlet (see page 3-10).

Straighten any crimps in the hoses.

Tighten any loose hoses.

Troubleshooting

Passive Alarms

If the red Alarm LED is blinking, the alarm is a passive alarm. The heater contin-

ues to operate, but this problem could prevent correct heating of your material.

Note that once the Acknowledge Alarm button is pressed once, the blinking red

LED becomes solid. A passive alarm will go away when the alarm condition is

cleared.

Problem

P1 Process Temperature

Deviation – The process tem-

perature exceeds the deviation

band as entered for the speci-

fied time. Default values are

10°F (6°C) for 5 sec.

Possible cause

One of the solid state relays (SSRs) has

failed.

The process RTD is loose or has fallen

out.

The air hose connections are loose.

The heater has failed.

Solution

Replace the failed solid state relays

(SSR).

Check the process RTD and tighten if

needed.

Tighten all air hose connections.

Replace the failed heating element (see

page 6-12).

6-8 l Troubleshooting

Troubleshooting

Troubleshooting l 6-9

Replacing Fuses

1Disconnect and lockout the main power supply.

2Open the control center.

3Check the fuse. If necessary, pull the fuse out and replace it with a fuse of the

same type and rating.

Fuse Blocks

To locate the appropriate fuse

and replacement part, refer to

the wiring diagrams that

came with your HTC. IMPORTANT: Always refer

to the wiring diagrams that

came with your heater to

locate specific electrical

components. Illustrations in

the User Guide are intended

to be representative only.

O OFF

Checking Heater Solid State Relays

1Disconnect and lockout the main power supply.

2Open the control center door.

3Locate the process solid state relays (SSRs). Refer to the wiring diagrams that

came with your heater.

4Check the resistance using an ohmmeter.

6-10 l Troubleshooting

IMPORTANT: Always refer

to the wiring diagrams that

came with your heater to

locate specific electrical

components. Illustrations in

the User Guide are intended

to be representative only.

Solid state relays

Check the resistance between

the terminal screws. If ohms

equal zero, replace the relays.

O OFF

Terminal Screws

Troubleshooting

Troubleshooting l 6-11

Checking or Replacing Temperature

Sensors

The HTC process air heater uses RTD sensors to monitor the process temperature

in the hopper inlet, the setback temperature in the hopper outlet, and the process

protection temperature in the heater outlet.

To check or replace an RTD sensors:

1Disconnect and lockout the main power supply.

2Locate the RTD sensors.

3Check the sensor positions and conditions. Temperature readings will be

incorrect if the sensors are touching the wall of an air hose or pipe or if the sen-

sor or wiring is damaged. The tip of the sensor should be centered within the

air hose or pipe. Sensor wires should be attached to the appropriate connection

points on the heater’s control center.

4To check with ohm meter, measure the resistance across the RTDs. The

resistance should be approximately 110 ohm at room temperature.

5Replace the sensor, if necessary.

Typical loca-

tion of the

Process RTD

at the hopper

inlet.

IMPORTANT:Always refer

to the wiring diagrams

that came with your

heater to locate specific

electrical components.

Illustrations in the User

Guide are intended to be

representative only.

O OFF

6-12 l Troubleshooting

Replacing the Heating Elements

1Disconnect and lockout the main power.

2Gain access to the heating elements by removing screws that

secure the heating element cover to the enclosure.

3Remove the heating element cover by tilting

the top away from the enclosure slightly, then

lifting the cover up and away from the enclosure.

4Refer to the “Testing the Installation” section

(page 3-13) and determine which heater(s) is

not functioning.

5Remove the screws securing the electrical

cover plate to the heating element enclosure.

Remove the electrical cover plate.

6Note the connection points then disconnect the heating element leads from

the terminals on the terminal block.

IMPORTANT:Always refer

to the wiring diagrams

that came with your

heater to locate specific

electrical components.

Illustrations in the User

Guide are intended to be

representative only.

O OFF

Screws to Remove

- Large Heaters

Heater

Wires

Heater

Connection

Junction Box

Troubleshooting

Troubleshooting l 6-13

Replacing the Heating

Elements (continued)

7Remove the hose clamp securing the

insulated hose to the outlet of the heat-

ing element. Remove the hose.

8Remove the hose clamps securing the

heating element to the heater inlet.

9Remove the internal hose clamp.

10 Lift the heating element out of the enclosure.

11 Slide the insulation off the heater,or make a cut the entire length of

the insulation sleeve to aid removal.

12 Check the ID mark on the side of the heating element for kW rating

and voltage. The ID mark is on the outside of the tube near the end with the

lead wires. Make sure the kW and voltage is the same as the replacement

heating element.

13 Slide the original insulation over the new heater or, if the insulation was

cut for removal, wrap the cut insulation sleeve around the new heater and

secure it with duct tape.

14 Set the new heating element into the enclosure. Secure the heating ele-

ment to the heater inlet with the original three (3) hose clamps.

15 Connect the insulated outlet hose the the outlet of the heating element.

Secure the hose with the original hose clamp.

16 Route the heating element leads to the terminal block. Connect the heat-

ing element leads to the original terminals on the terminal block. Reinstall

the electrical cover plate.

17 Reinstall the heating element cover on the enclosure.

18 Test the system to insure that the new heating element is functioning cor-

rectly (see Page 3-13, Step 3).

Clamps

Remove

Clamp

✐

Note: For larger units (above 60

kW), it may be necessary to

remove the front heaters to

access the rear heaters.

Replacing the Air Flow Differential

Pressure Switch

If the air flow differential pressure switch fails to detect the pressure drop between

the heater inlet and outlet, it should be replaced.

1Stop the heater, disconnect and lockout the main power.

2Gain access to the heating elements by removing screws that

secure the heating element cover to the enclosure.

3Remove the heating element cover by tilting

the top away from the enclosure slightly, then

lifting the cover up and away from the enclo-

sure.

4Note their location then remove the two

wires connected to the pressure switch.

5Note their locations then disconnect the

hose coming from the heater outlet from

the low pressure side of the switch and the

hose coming from the heater inlet from

the high pressure side of the switch.

6-14 l Troubleshooting

O OFF

IMPORTANT:Always refer

to the wiring diagrams

that came with your

heater to locate specific

electrical components.

Illustrations in the User

Guide are intended to be

representative only.

Troubleshooting

Troubleshooting l 6-15

Replacing the Air Flow Differential

Pressure Switch (continued)

6Remove the mounting hardware securing the

pressure switch to the heating element enclosure.

7Align the new pressure switch with the mount-

ing holes and secure it to the heating enclosure

using the original mounting hardware.

8Connect the hose coming from the heater outlet

to the low pressure side of the switch and the

hose coming from the heater inlet to the high

pressure side of the switch.

9Connect the two wires to their original location on the pressure switch.

10 Test the system to insure that the new air flow differential switch is detect-

ing the pressure drop between the heater inlet and outlet.

11 Reinstall the heating element cover on the enclosure.

12 Connect the hose coming from the heater outlet to the low pressure side

of the switch and the hose coming from the heater inlet to the high pres-

sure side of the switch.

13 Connect the two wires to their original location on the pressure switch.

14 Test the system to insure that the new air flow differential switch is detect-

ing the pressure drop between the heater inlet and outlet.

6-16 l Troubleshooting

We’re Here to Help

Conair has made the largest investment in customer support in the plastics indus-

try. Our service experts are available to help with any problem you might have

installing and operating your equipment. Your Conair sales representative also

can help analyze the nature of your problem, assuring that it did not result from

misapplication or improper use.

How to Contact Customer Service

To contact Customer Service personnel, call:

NOTE: Normal operating hours are 8:00 AM - 5:00 PM. After hours emergency

service is available at the same phone number.

From outside the United States, call: 814-437-6861

You can commission Conair service personnel to provide on-site service by con-

tacting the Customer Service Department. Standard rates include an on-site hourly

rate,with a one-day minimum plus expenses.

Before You Call...

If you do have a problem, please complete the following checklist before

calling Conair:

❒Make sure you have all model, control type from the serial tag, and parts list

numbers for your particular equipment. Service personnel will need this infor-

mation to assist you.

❒Make sure power is supplied to the equipment.

❒Make sure that all connectors and wires within and between control systems

and related components have been installed correctly.

❒Check the troubleshooting guide of this manual for a solution.

❒Thoroughly examine the instruction manual(s) for associated equipment, especial-

ly controls. Each manual may have its own troubleshooting guide to help you.

❒Check that the equipment has been operated as described in this manual.

❒Check accompanying schematic drawings for information on special considerations.

Additional manuals and prints for

your Conair equipment may be

ordered through the Customer

Service or Parts Department for a

nominal fee, or visit the product

section of the Conair website

www.conairnet.com.

Appendix l A-1

✐

A-2 l Appendix

Equipment Guarantee

Conair guarantees the machinery and equipment on this order, for a period as

defined in the quotation from date of shipment, against defects in material and

workmanship under the normal use and service for which it was recommended

(except for parts that are typically replaced after normal usage, such as filters,

liner plates, etc.). Conair’s guarantee is limited to replacing, at our option, the part

or parts determined by us to be defective after examination. The customer assumes

the cost of transportation of the part or parts to and from the factory.

Performance Warranty

Conair warrants that this equipment will perform at or above the ratings stated in

specific quotations covering the equipment or as detailed in engineering specifica-

tions, provided the equipment is applied, installed, operated and maintained in the

recommended manner as outlined in our quotation or specifications.

Should performance not meet warranted levels, Conair at its discretion will

exercise one of the following options:

•Inspect the equipment and perform alterations or adjustments to satisfy

performance claims. (Charges for such inspections and corrections will be

waived unless failure to meet warranty is due to misapplication, improper

installation, poor maintenance practices or improper operation.)

•Replace the original equipment with other Conair equipment that will meet

original performance claims at no extra cost to the customer.

•Refund the invoiced cost to the customer. Credit is subject to prior notice by the

customer at which time a Return Goods Authorization Number (RGA) will be

issued by Conair’s Service Department. Returned equipment must be well crated

and in proper operating condition, including all parts. Returns must be prepaid.

Purchaser must notify Conair in writing of any claim and provide a customer receipt

and other evidence that a claim is being made.

Warranty Limitations

Except for the Equipment Guarantee and Performance Warranty stated

above, Conair disclaims all other warranties with respect to the equipment,

express or implied, arising by operation of law, course of dealing, usage of

trade or otherwise, including but not limited to the implied warranties of

merchantability and fitness for a particular purpose.

Blower Installation and

Maintenance

This addendum will assist you in installing and maintaining your HAD blower.

By following the general instructions presented, you will prolong the life of the

equipment, while preventing unexpected downtime.

Receiving

All shipments are F.O.B. It is, therefore, in the interest of the buyer to carefully

inspect all shipments before they are accepted from the freight carrier. Upon

delivery, be sure that all items listed on the bill of lading and packing list

(inserted in the plastic envelope attached to the shipment) have been received.

Partial shipments are sometimes made.

The units are skidded, boxed, or crated to fully comply with rail or trucking

requirements for shipment. Accessories are sometimes shipped separately due

to handling space requirements.

Although all equipment is carefully inspected and prepared for shipment at the

factory, damage to the fan and/or drive parts may occur due to rough handling

during shipment.

Any shortage, breakage, or damage noticed at time of delivery should be indi-

cated to the carrier's representative. Damage noticed after delivery should be

reported to the carrier at once. Request their inspection of the shipment and fill

out a concealed damage inspection report.

Addendum l AD-1

✐

Note: This addendum

applies only if you have

purchased a Conair Hot

Air Dryer (HAD).

AD-2 l Addendum

Handling

Small units should be handled carefully and lifted only by the base, never by

the shaft, coupling, motor, or housing. Large units should be lifted by the base

or by the lifting eyes. Precautions should be taken to avoid dropping or jarring

the equipment as this can cause damage to the shaft or wheel, which is not visi-

bly noticeable, but can cause vibration problems.

Installation

Fans and motors should be mounted on structurally sound foundations.

Concrete is the best, however, other types designed properly are acceptable.

Equipment should be leveled on the foundation and shimmed or grouted in

place. This will prevent putting the fan structure into a bind by bolting it down

on an uneven surface.

As a general rule, if vibration isolators are used, the fan should first be bolted to

a structural steel base and the isolation takes place between the structural steel

base and the foundation. This prevents the fan base from floating due to uneven

weight distribution and/or drive forces when mounted directly to vibration iso-

lators.

✒TIP: Extended Storage - Units

that will be held in storage for a

period of up to two (2) years

should have special provisions so

operation-readiness can be

maintained. Motors should be

equipped with internal space

heaters kept on continuously.

Units should be crated and cov-

ered with polyethylene film. In

addition, impellers should be

hand-rotated once a month. For

best results, keep the units shel-

tered in a cool, dry location.

Wiring the Starter

The electrical connection consists of bringing power to the starter on the blower

assembly. The incoming power should match the rated nameplate power

required on the serial tag on the blower. This power should be clean and have

a voltage variation of no more that +/- 5% of the nameplate voltage.

CAUTION: Always disconnect and lock out the main power sources before mak-

ing electrical connections. Electrical connections should be made only by quali-

fied personnel.

CAUTION: Check the disconnect with a volt meter to insure that the power is off.

1Disconnect and lock out the main power sources before making electrical

connections. Electrical connections should be made only by qualified person-

nel.

Remove the cover from the main power control box on the blower assembly.

Route the main power

cable through the power control box. Secure the

power cable with a rubber compression fitting or strain relief, or use conduit.

Verify that the incoming power is securely attached to the blower assembly and

there is no strain on the incoming power wires.

Connect the power wires

to the three terminals on the upper side of the starter

power disconnect.

5Connect the ground wire to the ground lug.

Addendum l AD-3

✐

IMPORTANT: Always refer to the

wiring diagrams that came with

your blower before making electri-

cal connections.

Power Wires

(Black- Customer

Supplied)

Ground Wire

(Green - Customer

Supplied)

Note: The connections at the starter

should be made with properly sized

conductors and properly protected

with appropriate conduit. The rout-

ing should be neat and away from

potential mechanical damage. The

terminations should be landed on the

terminals on the starter. These ter-

minations should be regularly

checked to prevent loosening and

shorting to ground.

Before Start-up

Before start-up, the following should be verified.

1Fasteners - All foundation bolts, wheel hub setscrews, wheel locking bolts,

and bearing locking collars must be tight.

2Bearings - Check the bearings and make certain they are properly lubricated.

3Fan Wheel - Turn over the rotating assembly by hand to insure that it runs

free and does not bind or strike the fan housing. If the wheel strikes the

housing, the wheel may have to be moved on the shaft.

4Motor - Check the electrical wiring to the motor. The current characteristics

of the supply line must agree with the motor nameplate rating. The motor

should be wired and fused in accordance with the National Electric Code

(NEC) and local codes.

5Ducts - Duct connections from the fan to the duct work must not be distort-

ed. Ducts should never be supported by the fan. All duct joints should be

sealed to prevent air leaks. All debris should be removed from the ductwork

and the fan.

6Resistance Check- Check the resistance leg to leg and leg to ground to make

sure that the starter is wired correctly. The three legs should have equal resist-

ance +/- 5%. The resistance to ground should be 20 megohms or higher.

AD-4 l Addendum

IMPORTANT: Always refer to the

wiring diagrams that came with

your blower before checking electri-

cal connections.

Start-up

1Using the Start/Stop button, ”Jog" the motor

to check for proper wheel rotation. The motor

should be started in accordance with the manufac-

turer's recommendations. Arrows on the fan indi-

cate the proper direction of rotation and airflow.

2Throttle the blower discharge

damper ¼ open. (It is shown

fully open in this photo.)

3The fan may now be brought

up to speed. Watch for anything

unusual such as vibration, over-

heating of bearings and motor,

etc.

4Throttle the discharge damper until the pressure is 15-20" WC.

5Check the motor amperage against the nameplate amperage to

make sure the motor is not overloading.

Addendum l AD-5

Start/Stop

Button

Discharge

Damper

Fully Closed

Fully Open

Balance and Vibration

All fan impellers are dynamically balanced prior to installation in the fan

assembly. After assembly, fans supplied with motors are test run and fine-tune

balanced to reduce vibration levels to acceptable limits as shown in table below

(from AMCA Standard 204-96).

After field installation, fans will need to be checked prior to commissioning to

assure that the vibration levels do not change significantly from those achieved

at the factory. It is recommended that the velocity values in the table below are

not exceeded by more than 10% when field installed.

Fan Application Category Rigid Mounted Flexible Mounted

mm/sec (in./sec) mm/sec (in./sec)

BV-3 3.8 (0.15) 5.1 (0.20)

The installed vibration level of any fan is not solely dependent on the balance

grade. Installation factors such as the mass and stiffness of the supporting sys-

tem will influence the "as installed" vibration level (refer to AMCA Publication

202, Troubleshooting).

AD-6 l Addendum

General Maintenance

1Inspection - A definite time schedule for inspecting all rotating parts and

accessories should be established. The frequency of inspection depends on

the severity of operation and the locality. Inspections might be weekly at

first in order to set up the schedule.

2Alignment - The shaft must not be cocked in the bearings. Misalignment

can cause overheating, wear to dust seals, bearing failure, and vibration.

3Hardware - Check the tightness of all bolts and setscrews.

4Lubrication - Check the fan and motor bearings and add lubricant if neces-

sary. Be careful not to over grease as this can damage bearing seals.

5Air Flow - Make sure there is no debris or unnecessary obstructions to air-

flow in the outlet or inlet ductwork.

6Bearings - On high-speed fans, the bearings tend to run hot. Therefore, do

not replace a bearing because it feels hot to the touch. Place a pyrometer or

contact thermometer against the pillow block and check the temperature.

Pillow block and flange mount bearings can have housing surface tempera-

tures of 200°F (93°C) before the cause of overheating should be investigated.

7Wheel - Inspect the wheel blades for accumulation of dust and dirt. Clean

thoroughly with a stream of water jet, compressed air, or a wire brush. This

will help prevent an unbalanced condition. If the blades are aluminum, be

careful not to damage them. Cover the bearings so water does not enter the

pillow block. The wheel should have proper clearances to prevent the blades

from striking the housing. Make sure the wheel is rotating in the proper

direction. Never run the fan at a higher speed or temperature than is shown

on the fan nameplate. Contact Conair with any questions.

Addendum l AD-7

CAUTION: Wear eye protection. If you use compressed air to clean the equip-

ment, you must wear eye protection and observe all OSHA and other safety

regulations pertaining to the use of compressed air.

Fan Bearing Maintenance

For most applications, a lithium base grease (such as Mobilith AW2) conform-

ing to a NLGI Grade 2 consistency should be used. This type of grease inhibits

rust, is water resistant, and has a temperature range of -30 to 200°F (-34.3 to

93.3°C), with intermittent highs of 250°F (121°C). For extreme duty and high-

er temperature applications, use Mobilith SHC220 synthetic hydrocarbon

grease.

When greasing bearings, it is important not to over-grease. This is especially

true if the bearings are equipped with extended grease lines and the bearings are

not visible. In this case, more bearing failures occur due to over-greasing than

under-greasing. It is best to give the bearing just one "shot" of grease periodi-

cally if the bearings are not visible. When the bearings are visible, pump in

grease until a small bead of grease forms around the bearing seals. It is very

important that fan bearing greasing take place while the fan is operating.

AD-8 l Addendum

CAUTION: Caution should be taken while working on and near rotating equip-

ment to avoid personal injury.

Motor Maintenance

Lubricate the motor bearings to the manufacturer's recommendations.

Lubrication recommendations are included with the packet attached to the fan.

Should this packet be missing, the following will apply:

Integral Horsepower Ball Bearings Motors: Motors having pipe plugs or

grease fittings should be re-lubricated while warm and at standstill. Replace

one (1) pipe plug on each end shield with a grease fitting. Remove the other

plug for grease relief. On low pressure, grease, run, and lubricate until the new

grease appears at the grease relief. Allow the motor to run for ten (10) minutes

to expel any excess grease. Replace the pipe plugs. Motors not having pipe

plugs or grease fittings can be re-lubricated by removing the end shield, clean-

ing the grease cavity, and refilling three-fourths or circumference of the cavity.

Recommended Re-lubrication Intervals (General Guide Only)

Horse Power Standard Duty Severe Duty Extreme Duty

Range8 hr/day 25 hr/day Very Dirty

Dirty-Dusty High Ambients

1.5 - 7.5 5 yrs. 3 yrs. 9 mos.

10 - 40 3 yrs. 1 yr. 4 mos.

50 - 150 1 yr. 9 mos. 4 mos.

Recommended Motor Greases

Polyrex EM - Exxon Oil Company

SRI #2 - Chevron Oil Company

Addendum l AD-9

Vibration Level of Replacement

Impellers

All replacement impellers are dynamically balanced by the manufacturer prior

to shipment. Occasionally, an impeller that has been factory-balanced will yield

poor balance/vibration results when installed and operated. This does not mean

that the impeller was incorrectly balanced at the factory. It can result from dif-

ferences between test-stand conditions and operating conditions. A factory test

stand has different bearings, bearing spans, structural response, stiffness,

mechanical impedance, and by necessity, running speeds. The test stand cannot

duplicate the actual "fan system" and its response. For these reasons, the "fan

system" vibration levels must be checked after installing a replacement

impeller. Refer to the "Balance and Vibration" section for acceptable vibration

levels.

AD-10 l Addendum

Addendum l AD-11

Blower Troubleshooting

In the event that trouble is experienced in the field, the following Troubleshooting

Table lists the most common blower difficulties. These points should be checked

before contacting Conair Customer Service.

Problem

The blower does not meet

capacity or pressure ratings.

Excessive vibration and/or

noise.

Possible cause

Total resistance of system is higher than

anticipated.

Dampers or variable inlet vanes are not

properly adjusted.

Poor fan inlet or outlet conditions.

Air leaks in system.

Damaged wheel.

Incorrect direction or rotation.

Unstable foundation, fan bolted to an

uneven foundation, not shimmed or grout-

ed properly.

Foreign material in fan causing unbal-

ance.

Solution

Reduce the system restrictions by short-

ening the hoses, reducing the number of

turns, and/or increasing the plenum size.

Open the damper to increase the flow;

close the damper to decrease flow.

Clear all obstructions from the air inlet

and outlet.

If an inlet filter is used, clean or replace

the filter as needed.

Seal all possible air leaks in the system.

Replace the damaged wheel.

Reverse the electrical connections at the

motor.

Reinstall the unit following the installa-

tion instructions detailed in the

"Installation Instructions" on page AD-2.

Clean the fan and fan housing.

(continued)

AD-12 l Addendum

Blower Troubleshooting (continued)

Problem

Excessive vibration and/or

noise (continued).

Possible cause

Worn bearings.

Damaged wheel or motor.

Broken or loose bolts and setscrews.

Bent shaft.

Fan wheel or driver unbalanced.

120 cycle magnetic hum due to electrical

input.

Fan delivering more than rated capacity.

Loose dampers or variable inlet vanes.

Fan rotation in wrong direction.

Vibration transmitted to the fan from

some other source.

Solution

Replace the worn bearings.

Replace the damaged wheel and/or

motor.

Tighten or replace all loose bolts and/or

setscrews as needed.

Replace the motor.

Balance the wheel or driver following

factory instructions.

Check for high or unbalanced voltage.

Reduce the flow by throttling the dis-

charge damper.

Tighten any loose dampers or inlet

vanes.

Reverse the electrical connections at the

motor starter.

Make sure the fan is properly isolated

from the rest of the system.

Addendum l AD-13

Blower Troubleshooting (continued)

Problem

Overheated bearings.

Possible cause

Too much grease.

Damaged wheel or driver.

Bent shaft.

Abnormal end thrust.

Dirt in bearings.

Solution

Remove and excess grease (see "Fan

Bearing Maintenance" [page AD-8] and

"Motor Maintenance" [page AD-9] for

lubrication instructions).

Replace the damaged wheel or driver.

Replace the motor.

Make sure all spacers and shims are in

good condition. Replace as necessary.

Clean and lubricate the bearings (see

"Fan Bearing Maintenance" [page AD-8]

and "Motor Maintenance" [page AD-9]

for lubrication instructions).

Ordering Spare Parts

Contact Conair's Parts Department and supply the following information:

1Conair order number/serial number.

2Fan serial number stamped on nameplate.

3Fan code and model stamped on nameplate.

4Fan arrangement.

5Description of the part required.

6Part number,if the part is a casting.

7Special materials, paints, and / or coatings.

Wheel: Be sure to indicate direction of rotation as viewed from drive side,

type of wheel, and the operating speed.

Shaft: Length and diameter.

Motors: The name of the motor manufacturer, motor model number, and

serial number from the motor nameplate must be supplied to Conair

for repairs or replacement.

AD-14 l Addendum

Addendum l AD-15

Specifications: Hot Air Dryer (HAD) Blower

Hot Air Dryer model (HAD) 600 800 1000 1600 2400 3200 5000

RECOMMENDED MODEL HTC* HTC-30B†HTC-30B†HTC-30A†HTC-60A†HTC-90A†HTC-120A†HTC-120A†

Performance characteristics

Flow rate cfm 300 400 500 800 1200 1600 2500

Disc. pressure @flow rate

inches WC‡25 32 30 30 28 30 33

{mm} WC‡{635} {813} {762} {762} {711} {762} {838}

Motor Hp kW 5 {3.7} 7.5 {5.6} 7.5 {5.6} 10 {7.5} 15 {11.2} 25 {18.6}

Dimensions inches {cm} and weight lb {kg}

Outlet size selection (OD) 5 5 8 8 8 12

A - Height 42 {107} 42 {107} 42 {107} 42 {107} 42 {107} 42 {107}

B - Width 33 {84} 33 {84} 33 {84} 33 {84} 33 {84} 33 {84}

C - Length 39 {99} 39 {99} 42 {107} 42 {107} 80 {203} 82 {208}

Weight

Installed weight lb {kg}

250 {113} 320 {145} 380 {172} 500 {227} 700 {317} 900 {408}

Voltage Full Load Amps

400V/3 phase/50 Hz 9.1 13.2 13.2 16.8 25.2 40.8

460 V/3 phase/60 Hz 7.6 11 11 14 21 34

575 V/3 phase/60 Hz 6.1 9 9 11 17 27

Noise level

with standard soundproofing < 90 dbA @ 5 ft.

SPECIFICATION NOTES:

* For single hopper system.

† The HTC model number reflects the kilowatts of each unit. For example, HTC-60 has a 60 kilowatt heater.

‡The unit of measure WC is water column.

Weights are approximate.

Specifications may change without notice. Consult a Conair representative for the most current information.

TPDM024-0106

Conair 106 Users Manual

106 to the manual d21d55d7-b85f-47bc-9e55-251987975200

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