Alliance Laundry Systems DT120FG, JC120FG, JT120FG, SC120FG, ST120FG Troubleshooting Manual

Drying Tumblers

120 Pound Capacity 170 Pound Capacity

Refer to Page 5 for Model Numbers

LOAD READY

LOW

AIR FLOW

H I G

H

L O

W

M E D

I U M

NON

REV

TEMPERATURE

REV

PUSH

PUSH TO

TO

COOLING

COOLING START

START

DRYING

10

15

50

40

60

60 0

0

0 30

30

5

10

10 20

20

Troubleshooting

www.comlaundry.com

T021C

Part No. 70410601

August 2007

Table of

Section 1 – Safety Information ...............................................................2

Locating An Authorized Service Person ...............................................3

Contents

Section 2 – Introduction..........................................................................4

Model Identification ..............................................................................4

Customer Service...................................................................................5

Serial Plate Location..............................................................................5

Safety Warnings and Decals..................................................................6

Safety Precautions for Servicing Tumblers...........................................6

Section 3 – Troubleshooting....................................................................7

1. Motor Does Not Start....................................................................8

2. Motor Overload Protector Cycles Repeatedly ..............................9

3. Motor Runs But Cylinder Does Not Turn...................................10

4. Motor Does Not Stop..................................................................11

5. Gas Burner Does Not Ignite........................................................12

6. Burner Ignites and Goes Out Repeatedly....................................14

7. Burner Shuts OFF Prematurely...................................................15

8. Burner Repeatedly Cycles Off on High Limit Thermostat.........16

9. Steam Valve or Burner Does Not Shut Off.................................17

10. Clothes Do Not Dry ....................................................................18

11. Tumbler Overheating ..................................................................19

12. Burner Not Burning Properly......................................................20

13. Loading Door Opens During Operation......................................21

14. Tumbler Runs But No Steam to Coils – Steam Models .............22

15. Water In Steam Line – Steam Models ........................................23

16. Tumbler Will Not Start, Time On Drying Timer, Door Closed .24

17. Motor Runs But Will Not Heat...................................................26

18. Cylinder Turns, But Will Not Heat.............................................27

Section 4 – Adjustments........................................................................29

19. Drive Belt Tension......................................................................29

20. Cylinder Belt Tension.................................................................30

21. Fan Belt Tension .........................................................................30

22. Cylinder Clearance......................................................................31

the expressed written consent of the publisher.

70410601 1

Section 1

Safety Information

Throughout this manual and on machine decals, you will find precautionary statements (i.e. “CAUTION,” “WARNING,” and “DANGER”) followed by specific instructions. These precautions are intended for the personal safety of the operator, user, servicer, and those maintaining the machine.

a DANGER

Danger indicates the presence of a hazard that will cause severe personal injury, death or substantial property damage if the danger is ignored.

a WARNING

Warning indicates the presence of a hazard that can cause severe personal injury, death or substantial property damage if the warning is ignored.

a CAUTION

Caution indicates the presence of a hazard that will or can cause minor personal injury or property damage if the caution is ignored.

Additional precautionary statements (i.e. “IMPORTANT” and “NOTE”) are followed by specific instructions.

IMPORTANT

The word “IMPORTANT” is used to inform the reader of specific procedures where minor machine damage will occur if the procedure is not followed.

NOTE

The word “NOTE” is used to communicate installation, operation, maintenance or servicing information that is important but not hazard related.

In the interest of safety, some general precautions relating to the operation of this machine follow.

WARNING

• Failure to install, maintain and/or operate this product according to the manufacturer’s instructions may result in conditions which can produce serious injury, death and/or property damage.

• Do not repair or replace any part of the product or attempt any servicing unless specifically recommended or published in this Service Manual and unless you understand and have the skills to carry out the servicing.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the product is properly grounded and to reduce the risk of fire, electric shock, serious injury or death.

W006R2

2 70410601

Safety Information

IMPORTANT INFORMATION: During the lifetime of your tumbler, it may require service. The information contained in this manual was written and is intended for use by qualified service technicians who are familiar with the safety procedures required in the repair of your tumbler, and who are equipped with the proper tools and testing equipment.

WARNING

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the tumbler before servicing.

• Never start the tumbler with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.

W240

WARNING

Repairs that are made to your products by unqualified persons can result in hazards due to improper assembly or adjustments subjecting you or the inexperienced person making such repairs to the risk of serious injury, electrical shock or death.

W007

CAUTION

If you or an unqualified person perform service on your product, you must assume the responsibility for any personal injury or property damage which may result. The manufacturer will not be responsible for any injury or property damage arising from improper service and/or service procedures.

NOTE: The WARNING and IMPORTANT instructions appearing in this manual are not meant to cover all possible conditions and situations that may occur. It must be understood that common sense, caution and carefulness are factors which CANNOT be built into this tumbler. These factors MUST BE supplied by the person(s) installing, maintaining or operating the tumbler.

Always contact your dealer, distributor, service agent or the manufacturer on any problems or conditions you do not understand.

Locating An Authorized Service Person

:

Alliance Laundry Systems is not responsible for personal injury or property damage resulting from improper service. Review all service information before beginning repairs.

Warranty service must be performed by an authorized technician, using authorized factory parts. If service is required after the warranty expires, Alliance Laundry Systems also recommends contacting an authorized technician and using authorized factory parts.

W008

70410601 3

Section 2

Introduction

Model Identification

Information in this manual is applicable to these models:

Gas Steam/Thermal Oil

AT120FG

DC120FG

DT120FG

JC120FG

JT120FG SC120FG ST120FG

AT170FG DC170FG DT170FG

JC170FG

JT170FG SC170FG ST170FG

AT120CSH DC120CSH DT120CSH

JC120CSH JT120CSH

SC120AT

SC120CSH

ST120AT

ST120CSH

AT170CSH DC170CSH DT170CSH

JC170CSH

JT170CSH SC170CSH ST170CSH

4 70410601

Customer Service

If literature or replacement parts are required, contact the source from whom the machine was purchased or contact Alliance Laundry Systems at (920) 748-3950 for the name and address of the nearest authorized parts distributor.

For technical assistance, call (920) 748-3121.

Serial Plate Location

When calling or writing about your product, be sure to mention model and serial numbers. Model and serial numbers are located on serial plate as shown.

Introduction

Junction

Box

Cover

Serial

Plate

120 Pound Models

TMB1497S

Junction

Box

Cover

Serial

Plate

Wiring

Diagram

TMB1499S

170 Pound Models

70410601 5

Introduction

Safety Warnings and Decals

SAFETY WARNINGS and decals have been provided in key locations to remind you of important precautions for the safe operation and maintenance of your tumbler. Please take the time to review these warnings before proceeding with service work.

All decals have been designed and applied to withstand washing and cleaning. Decals should be checked periodically to be sure they have not been damaged, removed, or painted. Refer to the Parts Manual for ordering replacement decals.

Safety Precautions for Servicing Tumblers

• Disconnect electrical service.

• Shut off supply gas valve before servicing gas components.

• Access panel MUST be reinstalled after inspection or servicing of tumbler is completed.

• Use a non-corrosive leak detecting compound to check all pipe connections for gas leaks. DO NOT USE AN OPEN FLAME TO CHECK FOR GAS LEAKS!

• Belt guard MUST be reinstalled after inspection or servicing of tumbler is completed.

• Contactor box cover MUST be reinstalled after inspection or servicing of electric and/or reversing tumbler is completed.

• Loading door switch MUST be operational before putting tumbler into service.

• Junction box cover MUST be reinstalled after inspection or servicing of tumbler is completed.

6 70410601

Section 3

Troubleshooting

WARNING

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the tumbler before servicing.

• Close gas shut-off valve to gas tumbler before servicing.

• Close steam valve to steam tumbler before servicing.

• Never start the tumbler with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.

IMPORTANT: Refer to wiring diagram for aid in testing tumbler components.

W002

70410601 7

Troubleshooting

1. Motor Does Not Start

Motor Does

Not Start

Is there

broken, loose,

or incorrect

wiring?

Yes

Refer to wiring

diagram.

Is the

electrical power

off or circuit

breaker fuse

blown?

No

Is the

loading door

switch not

closed or switch

inoperative?

No

Is the

door switch

improperly

adjusted?

Yes

Check power

supply, or replace

Close door, panel

Yes

or test switch and

inoperative.

Refer to

Installation

Manual

switch adjustment.

fuses.

replace if

for door

No

Is the

transformer

inoperative?

No

Is the

motor relay

inoperative?

No

Are trunnion bearings

binding?

No

Yes

Test and replace

if necessary.

Test relay and replace

if inoperative.

Replace

trunnion

bearings.

Are

No

Is the start

circuit not

complete?

No

Is the motor

inoperative?

No

8 70410601

Yes

Press start switch

or test switch and replace if

inoperative.

Have motor tested

and replace if

inoperative.

idler bearings

binding?

No

Is timer

improperly

set?

No

Is timer

inoperative?

Yes

Replace

bearings.

Turn drying timer

clockwise to

desired setting.

Test timer and

replace if

inoperative.

TMB2115S

2. Motor Overload Protector Cycles Repeatedly

Motor Overload

Protector

Cycles

Repeatedly

Is voltage

correct?

No

Yes

Installation

Manual

requirements.

Troubleshooting

Refer to

for

electrical

Is clothes

load too

large?

No

Is clothes

cylinder

binding?

No

Is wiring

adequate?

No

Is make-up

air adequate?

Yes

Remove part of

load.

Check cylinder

for binding.

Check with

local power

company to

ensure that

wiring is

adequate.

Refer to

Installation

Manual

make-up air

requirements.

for

No

Clean lint

Is there lint

buildup around

tumbler or poor

maintenance?

No

70410601 9

Yes

Is there

broken, loose

or incorrect

wiring?

accumulation

on and around

the motors.

Yes

Refer to wiring

diagram.

TMB1904S

Troubleshooting

3. Motor Runs But Cylinder Does Not Turn

Motor Runs But Cylinder

Does Not Turn

Is cylinder

belt broken

or loose?

No

Is cylinder

binding?

No

Is motor

drive pulley

loose?

No

Yes

Replace or

adjust cylinder

belt.

Check cylinder

for binding.

Tighten drive

pulley bushing

screws.

Is drive belt

broken or

loose?

10 70410601

Yes

Replace or

adjust drive

belt.

TMB2116S

4. Motor Does Not Stop

Motor Does

Not Stop

Troubleshooting

Is the door

switch not

working

properly?

No

Is wiring

incorrect?

No

Is timer

inoperative?

Yes

Test switches and

replace if inoperative.

Refer to

Manual

switch adjustment.

Refer to wiring

Test timer and

inoperative.

Installation

for proper

diagram.

replace if

No

Is motor

contactor

inoperative?

70410601 11

Yes

Test motor

contactor and

replace if

inoperative.

TMB2117S

Troubleshooting

5. Gas Burner Does Not Ignite

Burner Does

Not Ignite

Is there

an improper or

inadequate exhaust

system?

Yes

Refer to

Installation

Manual

exhaust system

requirements.

for

Are the

orifices

incorrect?

No

Tumbler is equipped

for type of gas

Yes

specified on serial

plate. If orifices are

different from that

specified on serial

plate, obtain and

install correct orifices.

No

Are there

blown fuses or

tripped circuit breakers

in external electric

supply line?

No

Is

drying timer

not selected or

inoperative?

No

Is

thermostat

inoperative?

Yes

Check fuses or circuit breaker.

Set drying timer

or replace if inoperative.

Test thermostat

and replace if

inoperative.

Is there

lint

buildup?

No

Is there

inadequate

ductwork and

make-up

air?

No

Is the

airflow switch

inoperative?

Yes

Clean lint

compartment. Check

damper for lint

accumulation. Check

ductwork for lint

buildup.

Refer to

Installation

Manual

that ductwork and

make-up air

openings are sized

accurately.

Yes

Test switch

and replace

if inoperative.

to ensure

No

Is

there an

insufficient gas

supply?

No

12 70410601

Yes

Open partially closed gas

shut-off valve, or correct low

gas pressure. Check

manifold pressure and

adjust to pressure specified

on serial plate. If pressure

cannot be obtained, have

your local gas company

check main gas pressure.

Is airflow switch out of adjustment?

No

Yes

Refer to

Manual

switch adjustment.

Installation

for airflow

Continued on

5. Gas Burner Does Not Ignite (continued)

Troubleshooting

Continued from

door panel

not closed

properly?

No

Is

there broken,

loose or incorrect

wiring?

No

Open lint door panel,

Ye s

place lint door and

panel back on

tumbler (ensuring a

tight fit).

Ye s

Refer to

wiring diagram.

Is fan rotation

improper?

Ye s

May be due to

improper wiring

resulting in low

air flow. Refer to

Installation

Manual.

Is

there an

inoperative

igniter?

No

Is the igniter

control

inoperative?

No

Are valve coils

inoperative?

Ye s

Te st igniter

and replace if

inoperative.

Te st igniter control

and replace if

inoperative.

Check valve coils

and replace if

necessary.

No

70410601 13

TMB2118S-b

Troubleshooting

6. Burner Ignites and Goes Out Repeatedly

Burner Ignites and

Goes Out Repeatedly

Is there

insufficient

gas pressure?

No

Are the

burner ports

plugged?

No

Check gas supply

Yes

and pressure.

Low flame will

not maintain

sensor conductivity.

Check burner tubes

for build-up.

Does

tumbler have

improper orifices?

No

Is

there inadequate

make-up air?

Tumbler is

equipped for type

of gas specified on

Yes

serial plate. If

orifices are different

from that specified

on serial plate,

obtain and install

correct orifices.

Installation Manual

for make-up air

requirements.

Refer to

Is high limit

or cabinet limit

thermostat

inoperative?

No

Is the

exhaust system

improper or

inadequate?

No

Yes

Test thermostat

and replace if

inoperative.

Refer to

Installation Manual

for exhaust system

equirements.

TMB2119S

14 70410601

7. Burner Shuts OFF Prematurely

Burner shuts off

prematurely

Troubleshooting

Is there

improper or

inadequate

exhaust and/or

make-up air?

No

Is there

insufficient

gas supply?

No

Is tumbler

not properly

equipped for

type of gas

used?

No

Refer to

Installation Manual

Ye s

for exhaust and

make-up air

requirements.

Open partially

Ye s

closed gas shut-off

valve or correct low

pressure.

Tumbler is

equipped

for type of gas

specified on serial

Ye s

plate. If orifices are

different from that

specified on serial

plate, obtain and

install proper

orifices.

Is there

broken, loose

or incorrect

wiring?

No

Is there

Improper fan

rotation?

Ye s

wiring diagram

located inside contactor box.

May be due to

improper wiring

Ye s

resulting in low

air flow. Refer

to Installation

Refer to

Manual.

Is burner

flame

improperly

adjusted?

Ye s

Refer to

Installation Manual

for burner flame

adjustment.

No

Is high limit

thermostat

cycling off?

Ye s

Refer to

Paragraph 8.

No

TMB2120S

70410601 15

Troubleshooting

8. Burner Repeatedly Cycles Off on High Limit Thermostat

Burner repeatedly cycles off on high

limit thermostat

Is external

exhaust system

longer than

recommended or is

there inadequate

make-up air?

No

Is lint screen

clogged?

No

Is there lint

in tumbler

ducts?

No

Is there lint

in external

exhaust

system?

Refer to

Yes

Installation

Manual

exhaust and

make-up air

requirements.

Remove screen

and clean. Lint

Yes

screen and

compartment

should be cleaned

after every eight

hour shift.

Clean tumbler

ducts.

Disassemble

exhaust

system and

clean.

for

Is high limit

thermostat

cycling at too

low a

temperature?

No

Is lint door

panel not

closed

properly?

No

Is there

improper fan

rotation?

Yes

Replace

thermostat.

Remove lint door

panel, place lint

door panel back on

tumbler (ensuring a

tight fit).

May be due to

improper wiring

resulting in low air

flow. Refer to

Installation

Manual.

3 Phase power:

reverse L1 and L2

incoming power, check for proper

rotation.

No

16 70410601

TMB2122S

9. Steam Valve or Burner Does Not Shut Off

Steam Valve or

Burner Does Not Shut Off

Troubleshooting

Are there

impurities on gas

or steam valve

seat, preventing

valve from

closing?

No

Is wiring

correct?

No

Is drying timer

inoperative?

Yes

Replace gas

valve or

disassemble

and clean

steam valve.

Refer to wiring

diagram.

Replace

timer.

TMB2121S

70410601 17

Troubleshooting

10. Clothes Do Not Dry

Clothes Do Not

Dry

Is there

enough heating

time allocated for

the load?

No

Is the

heat source

inoperative?

No

Is there

too much water in

articles being

dried?

Yes

Start cycle again

with enough time to

dry load.

Refer to

Flowchart 17

Remove excess

.

water.

Does heat

source shut off

prematurely?

No

Is

the drying

selector

improperly

set?

No

Is

the voltage

incorrect?

No

Yes

Refer to

Flowchart 17

Set selector

for higher

setting.

Refer to

Manual

Installation

for electrical

requirements.

.

No

Is

the clothes

load too

large?

No

Is the

exhaust system

improper or

inadequate?

No

Yes

Remove part of

load. Maximum load is 120 pound dry weight (cotton

load) for 120

pound Tumbler,

etc.

Refer to

Manual

system equirements.

Installation

for exhaust

Is there

inadequate

make-up

air?

No

Is there

improper fan

rotation?

Yes

Refer to

Manual

air requirements.

Yes

resulting in low air

Installation

for make-up

May be due to

improper wiring

flow. Refer to

Installation

Manual

.

TMB2123S

18 70410601

11. Tumbler Overheating

Tumbler

Overheating

Troubleshooting

Gas Models: Does tumbler

have incorrect main

burner orifices?

No

Gas Models:

Is gas pressure

too high or low?

No

Steam Models:

Is steam solenoid

valve stuck open.

Ye s

Obtain and install

correct orifices.

Adjust gas pressure

as specified on

serial plate.

Clean solenoid valve

and replace if

necessary.

Is the

exhaust system

restricted or

inadequate?

No

Is the

thermostat

inoperative?

Ye s

Remove obstruction

or lint build up from

exhaust ductwork.

Refer to Installation

Manual for exhaust

system

requirements.

Replace

thermostat.

No

Is the

make-up air

inadequate?

Ye s

Refer to Installation

Manual for make-up

air requirements.

No

Clean lint

compartment. Check

Is there

lint buildup?

Ye s

damper for lint

accumulation. Check

ductwork for lint

buildup.

No

TMB2124S

70410601 19

Troubleshooting

12. Burner Not Burning Properly

Burner Not Burning

Properly

Are burner air

shutters incorrectly

adjusted?

No

Is there lint/dirt

in burner tube?

No

Is the gas

pressure too high

or low?

No

Does

the tumbler have

incorrect orifices?

No

Yes

Installation

Manual

flame adjustment.

Yes

Disassemble

burner and

blow out the dirt.

Check serial

plate on back of

tumbler for

correct gas

Tumbler is equipped

for the type of gas specified on serial

plate. If orifices are

different from that

specified on serial

plate, obtain and

install correct

orifices.

Refer to

for proper

pressure.

Is

the airflow

switch not

functioning

properly?

No

Is there

inadequate

make-up

air?

No

Is there

improper fan

rotation?

Yes

Replace airflow

switch.

Refer to

Installation Manual

for make-up air

requirements.

May be due to

improper wiring

resulting in low air

flow. Refer to

Installation

Manual

.

Is the

exhaust duct

restricted or

blocked?

No

20 70410601

Yes

Disassemble

and clean

exhaust system.

TMB2125S

13. Loading Door Opens During Operation

Loading Door

Opens During

Operation

Troubleshooting

Is tumbler

improperly

leveled?

No

Is clothes load

too large?

No

Is door strike

adjusted

incorrectly?

Yes

Refer to

Manual

Remove part of load

and restart tumbler.

Installation

for leveling

leg adjustment.

Refer to

Installation Manual

for strike

adjustment.

TMB2126S

70410601 21

Troubleshooting

14. Tumbler Runs But No Steam to Coils – Steam Models

Tumbler runs but

no steam to

coils - Steam

Models

Are valves

closed?

No

Is steam trap

blocked?

No

Is solenoid valve

inoperative?

No

Yes

Check all valves in

supply and return

lines, make sure

they are open.

Remove trap and

clean. Replace if

inoperative.

Check operation

of solenoid valve.

Is check valve

incorrectly

installed?

No

Is strainer

clogged?

22 70410601

Yes

Check for inlet and

outlet markings on

check valve and

invert if necessary.

Remove strainer

and clean.

TMB2127S

15. Water In Steam Line – Steam Models

Water in steam

line - Steam

Models

Troubleshooting

Is steam

piping

installed

incorrectly?

No

Is trap

functioning

improperly?

Yes

Refer to

Installation

Manual

requirements.

Check trap for size

and capacity. If trap is

dirty or sluggish clean thoroughly or replace.

Check return line for

high back pressure.

for

steam

TMB1887S

70410601 23

Troubleshooting

16. Tumbler Will Not Start, Time On Drying Timer, Door Closed

Tumbler Will Not Start, Time On Drying Timer,

Door Closed

Is there

line voltage

into

transformer?

No

Check electrical

service to tumbler

(fuses/circuit breaker).

Is there 120

volts out of

door switch?

Yes

Is

there control

(120 VAC)

voltage out of

transformer?

No

Replace

transformer.

Is there

120 volts at

terminal 3 of

control relay?

Yes

Is there

blown

control circuit

fuse?

Yes

Replace

fuse.

Is there

120 volts

across coil

terminals of

control relay?

No

Yes

Is there 120

volts into

door switch?

No

Check for broken wire

between fuse and door

switch.

Is there

120 volts on

terminal 1 of

control relay?

Yes

No

Check for broken

Is

Yes

24 70410601

door switch

actuator

functioning

properly?

No

Adjust

actuator.

door switch.

wire or poor connection at harness plug.

Replace

No

120 volts on terminal B of drying timer?

No

Is there

No

Replace

timer.

No

Replace

relay.

Continued on

Troubleshooting

16. Tumbler Will Not Start, Time On Drying Timer, Door Closed (continued)

Continued from

120 volts into

push-to-start

switch?

No

Check for broken

wire from control

relay terminal 1.

Yes

Press

push-to-start

switch. Is there

120 volts out of

push-to-start

switch?

No

Replace

push-to-start

switch.

Yes

Check for broken

wire or poor

connection at

harness plug.

Is there

120 volts

across fan

contactor

coil?

No

Yes

Replace fan

contactor.

TMB2128S-b

70410601 25

Troubleshooting

17. Motor Runs But Will Not Heat

Motor Runs But

Will Not Heat

Is igniter

sparking?

Yes

Is green wire from IEI control

connected to

ground

terminal?

Yes

No

IEI control

in safety lockout?

Open and

close door.

No

Connect green

wire to ground

Is

Yes

terminal.

No

Is

resistance of

high voltage

lead greater than 28,000

ohms or less

than 10,500

ohms?

Yes

Replace high voltage lead.

No

Is

igniter gap

not 5/32 inch

(.397 cm) or is

ceramic

cracked?

Yes

Regap or

replace igniter.

Replace

IEI control.

No

Is gas

shut-off

valve turned

on?

Yes

Is 120 volts

present on

black wire from

IEI control?

Yes

Is there an

open circuit

on gas valve

coil?

No

Yes

Turn on gas

shut-off valve.

Replace IEI

control.

Replace gas

valve.

TMB2129S

26 70410601

18. Cylinder Turns, But Will Not Heat

Cylinder Turns,

But Will Not Heat

Troubleshooting

Is airflow

light

glowing?

No

Is gas

shut-off valve

open?

Yes

Is

120 volts

present at

output terminal

of main

thermostat?

Yes

No

Yes

Is fan turning

counter-clockwise

as viewed from

Open gas

shut-off valve.

Check for

broken or

loose wire to

ignition

control.

the front?

No

Yes

Reverse any two of the

electrical service leads at the

fan motor contactor.

Is

120 volts

present at

terminal 4

of relay?

No

Refer to

for makeup air and exhaust

duct requirements.

Yes

Installation Manual

Replace

relay.

Is

120 volts

present across

coil terminals

of relay?

Yes

Is

No

Is

120 volts

present at input

terminal of main

thermostat?

No

Is

120 volts present at terminal 6

of relay?

No

70410601 27

Yes

Replace main

thermostat.

Check for

Yes

broken or

loose wire to

main

thermostat.

120 volts present at output terminal of stove

high limit

thermostat?

No

Is

120 volts

present at input

terminal of stove

high limit

thermostat?

No

Yes

Replace stove

Yes

Continued on

broken or loose

wire to relay.

high limit

thermostat.

TMB2130S-a

Troubleshooting

18. Cylinder Turns, But Will Not Heat (continued)

Continued from

120 volts

present on red

wire of fan

motor?

Is 120 volts

present at

output terminal of

airflow switch?

Check for broken

Yes

or loose wire to

stove high limit

thermostat.

No

Yes

Check for broken or

loose wire to

exhaust high limit

thermostat.

No

Is 120 volts

present at input

terminal of airflow

switch?

No

Is 120 volts

present at output terminal of exhaust high limit

thermostat?

No

Yes

Replace airflow

Check for broken

or loose wire to

airflow switch.

switch.

Is 120 volts

present on

brown wire of

fan motor?

No

Is

120 volts present

on output terminal

of fan contactor

aux contact?

No

Is

120 volts present

on input terminal

of fan contactor

aux contact?

Yes

Replace

fan motor.

Check for broken or

Yes

loose wire to fan

motor.

Yes

Replace fan

contactor.

Is 120 volts

present at input

terminal of exhaust

high limit

thermostat?

No

28 70410601

Replace exhaust

Yes

thermostat.

high limit

No

Check for broken or

loose jumper wire to

contactor contacts.

TMB2130S-b

Section 4

Adjustments

WARNING

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the tumbler before servicing.

• Close gas shut-off valve to gas tumbler before servicing.

• Close steam valve to steam tumbler before servicing.

• Never start the tumbler with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.

W002

19. Drive Belt Tension

Refer to Figure 1.

NOTE: If cylinder belts will be adjusted, service them before drive belt.

NOTE: To find the proper tension, apply light thumb pressure midway between the sheave and motor pulley, and adjust until the belt can be depressed approximately 1/2 inch (13 mm).

Side

Bracket

a. Support corner drive guard and remove screws

holding corner guard to rear of tumbler.

b. Support drive guard cover and remove screws

holding guard to rear of tumbler.

c. Reinstall drive guard.

d. Loosen the two side bracket attaching screws.

e. Turn the adjusting nuts clockwise until proper

tension is reached.

f. Tighten all nuts and screws.

Side

Bracket

Attaching

Screw

Motor

Mounting

Bracket

Adjusting

Nuts

Adjusting

Tube

T237P

Figure 1

70409601 29

Adjustments

WARNING

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the tumbler before servicing.

• Close gas shut-off valve to gas tumbler before servicing.

• Close steam valve to steam tumbler before servicing.

• Never start the tumbler with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.

W002

20. Cylinder Belt Tension

NOTE: To find the proper tension, apply light thumb pressure midway between the cylinder sheave and the step pulley, and adjust until the belt can be depressed approximately 1/2 inch (13 mm).

a. Support corner drive guard and remove screws

holding corner guard to rear of tumbler.

b. Support drive guard cover and remove screws

holding guard to rear of tumbler.

c. Loosen the four jackshaft assembly attaching

screws. Refer to Figure 2.

d. Loosen adjusting nuts on outer eyebolt and

rotate bottom nut clockwise until proper tension is reached. Refer to Figure 1.

e. Retighten all nuts and screws.

f. Readjust drive belt.

IMPORTANT: Adjusting the cylinder belt tension WILL AFFECT the drive belt tension. You MUST check and readjust the drive belt tension after adjusting the cylinder belt tension.

Jackshaft

Assembly

Attaching

Screws

21. Fan Belt Tension

Refer to Figure 3.

NOTE: To find the proper tension, apply light thumb pressure midway between the fan motor pulley and the fan pulley, and adjust until the belt can be depressed approximately 1/2 inch (13 mm).

a. Support corner drive guard and remove screws

holding corner guard to rear of tumbler.

b. Support drive guard cover and remove screws

holding guard to rear of tumbler.

c. Loosen the two mounting bracket attaching

screws.

d. Raise or lower eye bolt until proper tension is

reached.

e. Retighten all nuts and screws.

Fan

Belt

Fan

Motor

Pulley

Eye

Bolt

Mounting

Fan

Pulley

Jackshaft Assembly

T317P

Figure 2

30 70409601

Figure 3

Bracket Attaching

Screws

T213SE1A

WARNING

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the tumbler before servicing.

• Close gas shut-off valve to gas tumbler before servicing.

• Close steam valve to steam tumbler before servicing.

• Never start the tumbler with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.

Adjustments

W002

22. Cylinder Clearance

The clearance between the cylinder rim and front panel must be adjusted so the cylinder is centered within the front panel opening when the cylinder is fully loaded and is turning. However, the adjustment should be made when the cylinder is empty.

NOTE: If the cylinder is not properly adjusted, the cylinder rim will rub against the front panel.

a. Open loading door. b. Check the gap between the center of the front

panel top flange and the cylinder rim. Proper adjustment is when the gap is 8/32 inch ± 3/32 inch. Refer to Figure 4. Perform steps “a” through “g” to adjust the cylinder rim/front panel flange clearance.

c. Check the cylinder fore/aft clearance between

the inside front of the cylinder and the edge of the front panel flange. Proper adjustment is when the gap is 9/32 inch ± 1/32 inch. Refer to Figure 4. Perform steps “h” through “m” to adjust the cylinder fore/aft clearance.

Cylinder Rim/Front Panel Flange Clearance Adjustment

a. Support corner drive guard and remove screws

holding corner guard to rear of tumbler.

b. Support drive guard cover and remove screws

holding guard to rear of tumbler.

c. Loosen rear bearing mounting screws. Refer to

Figure 5.

d. Loosen the locknuts on rear adjustment screws.

Refer to Figure 5.

e. Turn the adjusting screws in or out as necessary

to obtain proper clearance between cylinder rim and front panel.

f. After the cylinder is properly adjusted, tighten

the adjusting screw locknuts and the rear bearing mounting screws.

g. Install drive guard cover.

NOTE: If adjusting the trunnion housing fails to correct the clearance, the problem is probably due to a worn trunnion shaft or defective bearings.

Cylinder Fore/Aft Clearance Adjustment

h. Support corner drive guard and remove screws

holding corner guard to rear of tumbler.

i. Support drive guard cover and remove screws

holding guard to rear of tumbler.

j. Loosen setscrews in the front bearing assembly

collar and rear bearing assembly collar. Refer to Figure 5.

k. Move cylinder assembly in or out as necessary

to obtain proper clearance between the cylinder and the front panel.

l. After the cylinder is properly adjusted, tighten

setscrews in the front and rear bearing assembly collars.

m. Install drive guard cover.

NOTE: Turning the adjusting screws clockwise will raise the cylinder and turning them counterclockwise will lower the cylinder. Turn both screws evenly to adjust top and bottom clearance. Turn one or the other adjusting screw in or out to adjust side clearance.

70409601 31

Adjustments

Cylinder

Rim

9/32" ± 1/32"

Inside

Front of

Cylinder

8/32" ± 3/32"

Cylinder Rim /

Front Panel

Flange

Clearance

Rear

Bearing Mounting

Screw

Rear

Adjusting

Screw

Front

Panel Flange

(Top Shown)

Figure 4

Adjusting

Locknut

Fore / Aft

Clearance

T218S

Screw

TMB1500S

Front

Adjusting

Screw

Rear

Bearing Assembly

Front

Bearing Assembly

Collar

Figure 5

32 70409601