Alliance Laundry Systems 75 User manual

www.comlaundry.com Part No. M411433R1
October 2001
T012c
T012C
Service
Drying Tumblers
75 Pound Capacity
634 Liter Capacity
Refer to Page 5 for Model Numbers

M411433 1
© Copyright 2001, Alliance Laundry Systems LLC
All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form or by any means without
the expressed written consent of the publisher.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Table of Contents
Section 1 – Safety Information
Locating An Authorized Service Person..................4
Section 2 – Introduction
Model Identification.................................................5
Customer Service.....................................................6
Serial Plate Location................................................6
Safety Warnings and Decals ....................................7
Safety Precautions for Servicing Tumblers .............7
How A Tumbler Works ...........................................8
Section 3 – Troubleshooting
1. Motor Does Not Start......................................11
2. Motor Overload Protector Cycles Repeatedly 12
3. Motor Runs But Cylinder Does Not Turn.......12
4. Motor Does Not Stop......................................12
5. Heating Element Does Not Heat
Or Burner Does Not Ignite..............................13
6. Igniter Glows, Flame Sensor Opens But No
Ignition - Gas Models .....................................15
7. Burner Ignites And Goes Out Repeatedly
- Gas Models ...................................................15
8. Heating Element Or Burner Shuts-off
Prematurely.....................................................16
9. Heating Element Or Burner Repeatedly
Cycles Off On High Limit Thermostat ...........16
10. Heating Element Or Burner
Does Not Shut-off ..........................................17
11. Clothes Do Not Dry ........................................17
12. Tumbler Overheating......................................17
13. Burners Not Burning Properly - Gas Models .18
14. Cylinder Door Opens During Operation.........18
15. Tumbler Runs But No Steam To Coils
- Steam Models ...............................................18
16. Water In Steam Line - Steam Models.............19
17. Troubleshooting Electronic Control Models ..19
18. Tumbler Will Not Start, Time On Drying Timer,
Door Closed (Manual Timer Models).............20
19. Motor Runs, Time On Drying Timer But No
Heat .................................................................21
20. Igniter Does Not Glow....................................22
21. Igniter Glows Constantly ................................22
22. Igniter Glows, Cycles Off But Burner Does Not
Ignite ...............................................................22
23. Igniter Does Not Spark ...................................23
Section 4 – Grounding
Grounding Instructions ..........................................25
Section 5 – Service Procedures
24. Control Panel ..................................................27
25. Push-to-Start Switch .......................................27
26. Cooling, Drying, or Run Light........................27
27. Relay (Manual Timers Models)......................29
28. Resistor 208 or 240 Volt/60 Hertz..................29
29. Cooling or Drying Timer ................................29
30. Cooling or Drying Timer Motor .....................30
31. Coin Meter ......................................................31
32. Coin Meter Timer Motor ................................32
33. Coin Meter Run or Heat Switch .....................32
34. Electronic Control (MM Models)...................33
35. Reversing/nonreversing Switch ......................33
36. Battery (MM Model) ......................................33
37. Control Thermostat.........................................35
38. Thermistor.......................................................37
39. Gas Valve........................................................38
40. Diode Logic Board..........................................38
41. Main Coil ........................................................38
42. Igniter Bracket ................................................38
43. Sensor..............................................................40
44. Igniter..............................................................40
45. Ignition Control...............................................40
46. Gas Valve........................................................40
47. Main Coil ........................................................41
48. Burner Tube ....................................................41
49. Contactors And Terminal Block .....................41
50. Heater Element ...............................................42
51. Stove High Limit Thermostat .........................44
52. Cabinet High Limit Thermostat......................45
53. High Limit Thermostat ...................................46
54. Steam Coils.....................................................46
55. Loading Door Assembly.................................47
56. Loading Door Hinge .......................................47
57. Loading Door Handle .....................................48
58. Front Panel......................................................49
59. Loading Door Switch......................................50
60. Loading Door Switch Rod ..............................50
61. Airflow Switch Assembly...............................51
62. Wire-Way Cover.............................................51
63. Drive Guard ....................................................52

2M411433
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
64. Drive Belt........................................................52
65. Drive Chain.....................................................53
66. Idler Housing Assembly .................................53
67. Idler Sprocket..................................................56
68. Sheave.............................................................56
69. Drive Sprocket/Pulley.....................................56
70. Idler Shaft........................................................56
71. Cylinder Sprocket/Upper Sheave....................57
72. Cylinder Assembly..........................................57
73. Trunnion Housing Assembly ..........................58
74. Trunnion Shaft Assembly ...............................59
75. Motor And Fan Assembly...............................60
76. Cylinder Drive Motor .....................................62
77. Reversing Control Electrical Components......64
Section 6 –Adjustments
78. Leveling Legs..................................................67
79. Main Gas Burner Air Inlet Shutters................68
80. Airflow Switch................................................69
81. Loading Door Switch......................................71
82. Loading Door Strike .......................................72
83. Drive Belt Tension..........................................72
84. Drive Tension..................................................75
85. Cylinder Clearance..........................................76

M411433 3
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Section 1
Safety Information
Throughout this manual and on machine decals, you will find precautionary statements (“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.
aDANGER
Danger indicates the presence of a hazard that will cause severe personal injury, death, or substantial property
damage if the danger is ignored.
aWARNING
Warning indicates the presence of a hazard that can cause severe personal injury, death, or substantial property
damage if the warning is ignored.
aCAUTION
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 (“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.
• 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 that you understand and have the
skills to carry out.
• 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.
W006R1
WARNING

4M411433
Section 1 Safety Information
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
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.
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.
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
WARNING
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.
W008
CAUTION
:

M411433 5
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Section 2
Introduction
Model Identification
Information in this manual is applicable to these models:
Gas Steam Electric
ATB75CG
DCB75CG
DCB75FG
DTB634
DTB75CG
DTB75EG
DTB75FG
JCB75CG
JT75CG
JT75EG
JTB75CG
JTB75EG
SCB75CG
ST75CG
STB75CG
STB75EG
STB634
ATB75CSH
DCB75CSH
DCB75CSL
DTB75CSH
DTB75CSL
JCB75CSH
JCB75CSL
JT75CSH
JT75CSL
JTB75CSH
JTB75CSL
SCB75CSH
SCB75CSL
ST75CSH
ST75CSL
STB75CSH
STB75CSL
DCB75CE
DTB75CE
JCB75CE
JT75CE
JTB75CE
SCB75CE
ST75CE
STB75CE

6M411433
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Customer Service
If literature or replacement parts are required, contact
the source from whom the machine was purchased or
contact Alliance Laundry Systems at [phone]
for the name and address of the nearest authorized
parts distributor.
For technical assistance, call [phone].
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(s) as shown.
T419IE3B

M411433 7
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
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 Parts Manual for
ordering replacement decals.
Safety Precautions for Servicing Tumblers
•Disconnect electrical service.
•Shut off supply gas valve before servicing gas
components.
•Control panel and access panel MUST be
reinstalled after inspection or servicing of
tumbler is completed.
•Use a non-corrosive leak detection solution to
check all pipe connections for gas leaks. DO NOT
USE AN OPEN FLAME TO CHECK FOR GAS
LEAKS!
•Chain/Drive guard MUST be reinstalled after
inspection or servicing of tumbler is completed.
•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.

8M411433
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
How A Tumbler Works
The tumbler uses heat, air and movement to dry loads of laundry.
When the motor is started, the exhaust fan pulls air in through the air intake and over the heat source
(burner flame for gas, heating element for electric, and coil for steam).
The heated air moves into the cylinder, where it is circulated through the laundry by the tumbling action
of the cylinder.
The air then passes through the lint filter, exhaust fan, and is vented to the outdoors.
NOTE: In Energy Saver Models, some of the exhaust air is recirculated. Refer to illustration on page 9.
Fresh Air
Combustion Air
Mixed Air
Exhaust Air T008CE1A
Standard Models

M411433 9
Section 2 Introduction
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
T007CE1A
Fresh Air
Combustion Air
Mixed Air
Recirculating Air
Exhaust Air
Energy Saver Models

M411433 11
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
Section 3
Troubleshooting
IMPORTANT: Refer to appropriate wiring diagram for aid in testing tumbler components.
1. MOTOR DOES NOT START
POSSIBLE CAUSE TO CORRECT
Electrical power off or fuses blown. •Check power and fuses, replace fuses if necessary
Loading door not closed or inoperative door switch. •Close door, or test switch and replace if inoperative.
Door switch improperly adjusted. •Refer to Adjustment Section for door switch adjustment.
Trunnion shaft assembly binding in
trunnion housing bearings. •Replace trunnion housing bearings.
Start circuit not completed. •Press start switch, or test switch and replace if
inoperative.
Idler shaft binding in idler housing bearings. •Replace bearings.
Inoperative motor. •Have motor tested and replace if inoperative.
Non-Metered Models: Timer improperly set. •Turn drying timer clockwise to desired setting.
Non-Metered Models: Inoperative timer. •Test timer and replace if inoperative.
Metered Models: Improper coins inserted in
accumulator. •Check that proper coins are inserted.
Metered Models: Accumulator knob improperly
set after coins were inserted. •Turn knob clockwise to its full limit of travel.
Metered Models: Inoperative run switch
(accumulator). •Test run switch and replace if inoperative.
Broken, loose, or incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.

12 M411433
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
2. MOTOR OVERLOAD PROTECTOR CYCLES REPEATEDLY
3. MOTOR RUNS BUT CYLINDER DOES NOT TURN
4. MOTOR DOES NOT STOP
POSSIBLE CAUSE TO CORRECT
Incorrect voltage. •Refer to the Installation Manual (supplied with tumbler)
for electrical requirements.
Clothes load too large. •Remove part of load.
Cylinder is binding. •Check cylinder for binding. Refer to Adjustment Section
for cylinder adjustment.
Inadequate wiring. •Check with electrician to ensure that wiring is adequate.
Inadequate make-up air. •Refer to Installation Manual (supplied with tumbler) for
make-up air requirements.
Poor housekeeping. •Clean lint accumulation on and around the motor.
Broken, loose, or incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.
POSSIBLE CAUSE TO CORRECT
Motor drive pulley loose. •Tighten setscrews.
Sheave loose. •Tighten setscrews.
Broken or loose belt. •Replace or adjust belt. Refer to Adjustment Section for
proper belt adjustment.
Broken or loose drive chain. •Replace or adjust chain. Refer to Adjustment Section for
proper chain adjustment.
Cylinder is binding. •Check cylinder for binding. Refer to Adjustment Section
for proper cylinder adjustment.
POSSIBLE CAUSE TO CORRECT
Inoperative door switch or switch is out-of-
adjustment. •Test switch and replace if inoperative. Refer to Adjustment Section for proper switch adjustment.
Non-Metered Models: Inoperative timer. •Test timer and replace if inoperative.
Metered Models: Inoperative accumulator. •Test accumulator and replace if inoperative.
Incorrect wiring. •Refer to wiring diagram located on the back of tumbler or
in literature packet.

M411433 13
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust system. •Refer to the Installation Manual (supplied with tumbler)
for exhaust system requirements.
Blown fuses or tripped circuit breakers. •Check fuses or circuit breakers.
Drying timer not selected or inoperative. •Set drying timer or replace if inoperative.
Inoperative thermostat. •Test thermostat and replace if inoperative.
Electric Models:
Inoperative heating elements. •Check heat contactors and elements. Replace if necessary.
Gas Models:
Insufficient gas supply. •Open partially closed gas shut-off valve, or correct low gas pressure. Check inlet pressure and compare to
pressure specified on serial plate. If pressure cannot be
obtained, contact gas supplier.
Gas Models:
Incorrect orifices. •Tumbler is equipped for type of gas specified on serial plate. If orifices are different from that specified on serial
plate, obtain and install proper orifices.
Gas Models: (IEI Ignition)
Inoperative igniter. •Test igniter and replace if inoperative.
Gas Models: (IEI Ignition)
Inoperative igniter control. •Test igniter control and replace if inoperative.
Gas Models:
Inoperative Main Coil •Test main coil and replace if inoperative.
Gas Models:
Inoperative Redundant Coil •Test redundant coil and replace complete gas valve if inoperative.
Gas Models: (Glow Bar Ignition)
Inoperative igniter. •Test igniter and replace if inoperative.
Gas Models: (Glow Bar Ignition)
Inoperative sensor. •Test sensor and replace if inoperative.
Gas and Electric Models:
Inoperative high limit thermostat. •Test thermostat and replace if inoperative.
(continued on next page)

14 M411433
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE (cont.)
POSSIBLE CAUSE TO CORRECT
Gas and Electric Models:
Inoperative airflow switch •Clean lint compartment after every eight hour shift.
•Check back draft damper for foreign objects, lint
accumulation, or other causes that may prevent damper
from opening.
•Check ductwork for lint build-up. Refer to Installation
Manual (supplied with tumbler) to ensure that ductwork
and make-up air openings are sized properly.
•Check exhaust outlet. If a screen has been improperly
installed on the outlet, it may be clogged with lint or
frozen over in winter.
Gas and Electric Models:
Airflow switch out of adjustment. •Refer to Adjustment Section for airflow switch adjustment.
Lint door panel not closed properly. •Open lint door panel, place lint door panel back on
tumbler (ensuring a tight fit) then latch.
Broken, loose, or incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.

M411433 15
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
6. IGNITER GLOWS, FLAME SENSOR OPENS BUT NO IGNITION - GAS MODELS
(White Rodgers Glow-bar Ignition)
7. BURNER IGNITES AND GOES OUT REPEATEDLY - GAS MODELS
(Glow-Bar Ignition)
POSSIBLE CAUSE TO CORRECT
Insufficient gas supply. •Is manual shut-off valve in full open position? Check gas
pressure.
Gas flow, but no ignition. •Gap between igniter and burner must be 1/8 –1/4 inch.
No gas flow through gas valve. •Check for 80 –120 Volts between red and white wires on
gas valve.
•If correct voltage is present and redundant coil does not
click open, replace complete gas valve.
•If correct voltage is not present, replace diode logic board.
•If correct voltage is present and redundant coil clicks
open, check for 40 –60 Volts across the purple wires on
the main coil after the igniter cycles off.
•If voltage is present and main coil does not click open,
replace main coil.
•If no voltage is present, replace diode logic board.
POSSIBLE CAUSE TO CORRECT
Burner heat not holding sensor contacts open. •Replace sensor.
Insufficient gas pressure. •Check gas supply and pressure. A low flame will not
maintain radiation to sensor.
Burner ports plugged or dirty. •Check burner tubes for build-up.
Improper or inadequate exhaust system or make-up
air. •Refer to Installation Manual (supplied with tumbler) for exhaust and make-up air requirements.
Inoperative high limit thermostat. •Test thermostat and replace in inoperative.
Improper orifices. •Tumbler is equipped for type of gas specified on serial
plate. If orifices are different from that specified on serial
plate, obtain and install proper orifices.

16 M411433
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
8. HEATING ELEMENT OR BURNER SHUTS-OFF PREMATURELY
9. HEATING ELEMENT OR BURNER REPEATEDLY CYCLES OFF ON HIGH LIMIT
THERMOSTAT
POSSIBLE CAUSE TO CORRECT
Improper or inadequate exhaust and/or make-up air
system. •Refer to Installation Manual (supplied with tumbler) for exhaust and make-up air requirements.
Gas Models: Insufficient gas supply •Open partially closed gas shut-off valve, or correct low
pressure.
Gas Models: Tumbler not properly equipped for
type of gas used. •Tumbler is equipped for type of gas specified on serial plate. If orifices are different from that specified on serial
plate, obtain and install proper orifices.
Gas Models: Improperly adjusted burner flame. •Refer to Adjustment Section for burner flame adjustment.
Gas Models: (Glow-Bar Ignition) Sensor contact
closing. •Replace sensor.
Cycling off on limit thermostat. •Refer to Paragraph 9.
Broken, loose or incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.
POSSIBLE CAUSE TO CORRECT
External exhaust system is longer than
recommended or inadequate make-up air. •Refer to Installation Manual (supplied with tumbler) for exhaust and make-up air requirements.
Clogged lint screen. •Remove screen and clean. Lint screen and compartment
should be cleaned after every eight hour shift.
Lint in tumbler ducts. •Clean tumbler ducts
Lint in external exhaust system. •Disassemble exhaust system and clean.
High limit thermostat cycling at too low a
temperature. •Replace thermostat.
Lint door panel not closed properly. •Remove lint door panel, place lint door panel back on
tumbler (ensuring a tight fit) then latch.

M411433 17
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
10. HEATING ELEMENT OR BURNER DOES NOT SHUT-OFF
11. CLOTHES DO NOT DRY
12. TUMBLER OVERHEATING
POSSIBLE CAUSE TO CORRECT
Gas Models:
Impurities on gas valve seat, preventing valve from
closing.
•Replace gas valve.
Inoperative drying timer, relay or contactor. •Replace timer, relay or contactor.
Incorrect wiring. •Refer to wiring diagram located on back of tumbler or in
literature packet.
POSSIBLE CAUSE TO CORRECT
Heat source inoperative. •Refer to Paragraph 5.
Too much water in articles being dried. •Remove excess water.
Clothes load too large. •Remove part of load.
Improper or inadequate exhaust system. •Refer to Installation Manual (supplied with tumbler) for
exhaust requirements.
Heat source shuts-off prematurely. •Refer to Paragraph 8.
Drying timer improperly set. •Set selector for higher setting.
Incorrect voltage. •Refer to Installation Manual (supplied with tumbler) for
electrical requirements.
Inadequate make-up air. •Refer to Installation Manual (supplied with tumbler) for
make-up air requirements.
POSSIBLE CAUSE TO CORRECT
Gas Models: Incorrect main burner orifices. •Replace orifices.
Gas Models: Gas pressure too high. •Gas pressure must be as specified on serial plate.
Inadequate make-up air. •Refer to Installation Manual (supplied with tumbler) for
make-up air requirements.
Lint accumulation. •Remove lint.
Restricted or inadequate exhaust system. •Remove obstruction or lint build-up from exhaust
ductwork. Refer to the Installation Manual (supplied
with tumbler) for exhaust system requirements.
Inoperative thermostat. •Replace thermostat.

18 M411433
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
13. BURNERS NOT BURNING PROPERLY - GAS MODELS
14. CYLINDER DOOR OPENS DURING OPERATION
15. TUMBLER RUNS BUT NO STEAM TO COILS - STEAM MODELS
POSSIBLE CAUSE TO CORRECT
Burner air shutters incorrectly adjusted. •Refer to Adjustment Section for proper flame adjustment.
Dirt in burners. •Disassemble burners and blow out the dirt.
Gas pressure too high. •Check serial plate on back of the tumbler for correct gas
pressure.
Incorrect orifices. •Tumbler is equipped for type of gas specified on serial
plate. If orifices are different from that specified on serial
plate, obtain and install proper orifices.
Restricted or blocked exhaust duct. •Disassemble and clean exhaust system.
Airflow switch not functioning properly. •Check adjustment and replace airflow switch if necessary.
POSSIBLE CAUSE TO CORRECT
Door strike improperly adjusted. •Refer to Adjustment Section for door strike adjustment.
Tumbler improperly leveled. •Refer to Adjustment Section for leveling leg adjustment.
POSSIBLE CAUSE TO CORRECT
Valves closed. •Check all valves in supply and return lines, make sure
they are open.
Blocked steam trap. •Remove trap and clean. Replace if inoperative.
Inoperative solenoid valve. •Check operation of solenoid valve.
Incorrect installation of check valve. •Check for inlet and outlet markings on check valve, and
invert is necessary.
Clogged strainer. •Remove strainer and clean.
Inoperative timer or thermostat. •Test timer or thermostat, replace if inoperative.

M411433 19
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
16. WATER IN STEAM LINE - STEAM MODELS
17. TROUBLESHOOTING ELECTRONIC CONTROL MODELS
POSSIBLE CAUSE TO CORRECT
Incorrect installation of steam piping. •Refer to Installation Manual (supplied with tumbler) for
steam requirements.
Trap functioning improperly. •Check trap for size and capacity. If trap is dirty or
sluggish, clean thoroughly or replace. Check return line
for high back pressure.
PROBLEM POSSIBLE CAUSE TO CORRECT
Display shows “PF”
(MM models) Tumbler has not been run in last six days. Power tumbler for at least two continuous days to recharge battery.
A custom cycle has not been
programmed into memory. Enter a custom cycle into memory.
Discharged battery. If tumbler has been powered for at least two
continuous days, replace battery.
Door Open light and
display flash with door
closed
Door switch needs adjustment. Adjust and test door switch.
Door switch faulty. Replace door switch.
Electrical service connected
incorrectly. Check service connections to terminal block in junction box. For 120 or 240 Volt tumblers,
neutral wire must be connected to terminal
marked “NEUT”. On single phase tumblers, hot
wire must be connected to terminal marked “L1”.
A ground wire must be secured to the ground
screw in the junction box.
Display shows “SH”
and signals sounds Temperature at sensor is over 191°F (88.3°C). Allow tumbler to cool and press ON/SELECT pad. If display still shows “SH”, replace sensor.
Temperature sensor shorted. Replace temperature sensor.
Display shows “OP”
and signal sounds
three minutes after
tumbler is started
Temperature at sensor is under 24°F
(-4.4°C). If the temperature of the tumbler is above 24°F (-4.4°C), replace temperature sensor.
Temperature sensor open. Replace temperature sensor.

20 M411433
Section 3 Troubleshooting
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
WARNING
© Copyright, Alliance Laundry Systems LLC –DO NOT COPY or TRANSMIT
18. TUMBLER WILL NOT START, TIME ON DRYING TIMER, DOOR CLOSED
(MANUAL TIMER MODELS)
REPLACE
RELAY CHECK FOR BROKEN WIRE
FROM CONTROL
RELAY TERMINAL 1
REPLACE
PUSH-TO-START
SWITCH CHECK FOR
BROKEN WIRE
OR POOR
CONNECTION
AT HARNESS PLUG
CHECK FOR
LINE VOLTAGE
INTO DOOR SWITCH
CHECK FOR
LINE VOLTAGE
OUT OF
DOOR SWITCH
CHECK FOR
LINE VOLTAGE AT
TERMINAL 3 OF
CONTROL RELAY
CHECK FOR
LINE VOLTAGE
TO MOTOR
CHECK FOR
LINE VOLTAGE ACROSS
COIL TERMINALS
OF CONTROL RELAY
HAS SWITCH ROD
MECHANICALLY
ACTUATED
DOOR SWITCH?
CHECK FOR
LINE VOLTAGE ON
TERMINAL B
OF DRYING TIMER
CHECK FOR
LINE VOLTAGE ON
TERMINAL 1 OF
CONTROL RELAY
CHECK FOR
LINE VOLTAGE INTO
PUSH-TO-START
SWITCH
PRESS
PUSH-TO-START
SWITCH. CHECK FOR
LINE VOLTAGE OUT
OF PUSH-TO-START
SWITCH
ADJUST
DOOR SWITCH
ROD
REPLACE
DOOR
SWITCH
CHECK FOR
BROKEN
WIRE
OR POOR
CONNECTION
AT
HARNESS
PLUG
CHECK
ELECTRICAL SERVICE
TO TUMBLER
(Fuses/Circuit Breaker)
REPLACE
MOTOR
REPLACE
TIMER
YES
NO
YESYES
NO NO
YES
NO
NO
NO
YES YES YES YES
NO NO NO
NO
YES