Service
Drying Tumblers
50 Pound Capacity
Refer to Page 5 for Model Numbers
TMB795C
www.comlaundry.com
Part No. 70269301
January 2003
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
Wiring Diagram .......................................................6
Safety Warnings and Decals ....................................7
Safety Precautions for Servicing Tumblers .............7
How A Tumbler Works ...........................................8
Section 3 –Troubleshooting
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
Motor Does Not Start.........................................9
Motor Overload Protector Cycles Repeatedly .10
Motor Runs But Cylinder Does Not Turn. ......10
Motor Does Not Stop.......................................10
Heating Element Does Not Heat or Burner
Does Not Ignite ................................................11
Igniter Does Not Shut Off After Gas Ignition —
Gas Burner .......................................................13
Heating Element or Burner Shuts off
Prematurely ......................................................13
Heating Element or Burner Repeatedly Cycles
Off On High Limit Thermostat ........................14
Heating Element or Burner Does Not
Shut-off
14
Clothes Do Not Dry .........................................14
Tumbler Overheating.......................................15
Burners Not Burning Properly
— Gas Models .................................................15
Loading Door Opens During Operation ..........15
Tumbler Runs But No Steam To Coils
— Steam Models..............................................16
Water In Steam Line — Steam Models ...........16
Troubleshooting Electronic Control Models ...17
Tumbler Will Not Start, Time on
Drying Timer, Door Closed .............................18
Motor Runs, Time on Drying Timer
But No Heat .....................................................19
No Main Burner Flame, Igniter Does
Not Spark .........................................................20
Steam OM Models: No Heat with cycle selected,
unit running and calling for heat......................21
OM and RM Models: No Start with cycle
selected, start button pressed and door closed .22
22. OM Models: No Display after selecting one of
the ON/SELECT keys......................................23
23. Electric OM Models: No Heat with cycle
selected, unit running and calling for heat .......24
24. Gas OM Models: No Heat with cycle selected,
unit running and calling for heat......................25
25. OM Models: No fan motor rotation with cycle
selected and start pressed .................................26
26. OM Reversing Models: No cylinder rotation or
reversing capabilities .......................................27
27. CD Models: No start with vend satisfied and start
button pressed in ..............................................28
28. CD Models: No Heat with vend satisfied and unit
running .............................................................29
29. CD Models: No start with vend satisfied and start
button pushed ...................................................30
Section 4 –Grounding
Grounding Instructions ..........................................31
Section 5 –Service Procedures
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
Controls ...........................................................33
Push-to-Start Switch ........................................33
Cooling, Drying, or Run Light ........................33
Coin Meter .......................................................34
Coin Meter Timer Motor .................................34
Coin Meter Run or Heat Switch ......................34
Igniter...............................................................36
Ignition Control ...............................................36
Gas Valve.........................................................36
Burner Tube .....................................................36
Contactors and Terminal Block .......................38
Heater Element ................................................38
Stove High Limit Thermostat ..........................40
Cabinet High Limit Thermostat.......................41
High Limit Thermostat ....................................42
Thermistor .......................................................42
Steam Coils......................................................42
Loading Door Assembly..................................43
Door Hinge ......................................................43
Loading Door Handle ......................................43
Front Panel.......................................................44
Airflow Switch ................................................45
Drive Guard .....................................................45
Drive Belt ........................................................45
(continued)
© Copyright 2003, 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.
70269301
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1
54.
55.
56.
57.
58.
59.
60.
Drive Belt.........................................................46
Idler Shaft ........................................................47
Trunnion Housing Assembly ...........................48
Trunnion Shaft Assembly ................................49
Motor and Fan Assembly.................................50
Fan And Motor Assembly ...............................52
Cylinder Drive Motor ......................................53
Section 6 –Adjustments
61.
62.
63.
64.
65.
66.
2
Leveling Legs ..................................................55
Main Gas Burner Air Inlet Shutters.................56
Airflow Switch.................................................57
Loading Door Strike ........................................59
Drive Belt Tension...........................................59
Cylinder Clearance ..........................................62
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
DANGER
DANGER indicates the presence of a
hazard that will cause severe personal
injury, death, or substantial property
damage if the danger is ignored.
WARNING
WARNING indicates the presence of a
hazard that can cause severe personal
injury, death, or substantial property
damage if the warning is ignored.
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
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 (“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.
70269301
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3
Section 1 Safety Information
IMPORTANT INFORMATION: During the
lifetime of a 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 a 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.
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
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.
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.
W008
4
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70269301
Section 2
Introduction
Model Identification
Information in this manual is applicable to these models†:
Gas
AT050L
AT050N
GT050L
GU050L
GU050N
HA050L
HA050N
HT050L
HT050N
HU050L
HU050N
LT050L
LT050N
LU050L
LU050N
PA050L
PA050N
PT050L
PT050N
PU050L
PU050N
SA050L
SA050N
ST050L
ST050N
SU050L
SU050N
UA050L
UA050N
UT050L
UT050N
UU050L
UU050N
Steam
AT050S
GU050S
HT050S
HU050S
PT050S
PU050S
ST050S
SU050S
UT050S
UU050S
Electric
GT050E
GU050E
HT050E
HU050E
LU050E
PT050E
PU050E
ST050E
SU050E
UT050E
UU050E
†Includes models with control suffixes:
BC - basic electronic, coin
MT - manual timer
RM - reversing OPL micro
BL - basic electronic, central pay
NC - NetMaster coin
RT - reversing manual timer
BX - basic electronic, prep for coin NR - NetMaster card
ZC - NetMaster coin network ready
BY - basic electronic, prep for card NX - NetMaster prep for coin
ZR - NetMaster card network ready
CD - rotary coin drop
NY - NetMaster prep for card
ZX - NetMaster prep for coin network ready
CX - prep for coin drop
OM - OPL micro
ZY - NetMaster prep for card network ready
CY - prep for card
70269301
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5
Section 2 Introduction
Customer Service
Wiring Diagram
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.
The wiring diagram is located in the contactor box.
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 found on serial plate on the rear of
machine and inside door.
SERIAL
PLATE
TMB803N
6
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70269301
Section 2 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 Parts Manual for
ordering replacement decals.
Safety Precautions for Servicing Tumblers
Prior to servicing tumbler:
• Disconnect electrical service and “lockout” to
prevent unintentional connection.
• Shut off supply gas valve.
• Allow machine to cool prior to servicing.
After servicing tumbler:
• Control/access panels must be reinstalled.
• Motor/drive/belt guards must be reinstalled.
• Contactor/junction/accessory box covers must be
reinstalled.
• 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!
• The loading door switch, lint door switch and
airflow switch must be operating properly.
70269301
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7
Section 2 Introduction
How A Tumbler Works
Fresh Air
Combustion Air
Mixed Air
Exhaust Air
TMB1748S
The tumbler uses heat, air and movement to dry loads of laundry.
When the motor is started, the exhaust fan pulls fresh 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.
8
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
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.
Lint door not closed or inoperative lint door switch. • Close lint door, confirm switch is positioned to actuate
with door closed.
Trunnion shaft assembly binding in
• Replace trunnion housing bearings.
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 or relay.
• Test timer and relay and replace if inoperative.
Metered Models: Improper coins inserted in
• Check that proper coins are inserted.
accumulator.
Metered Models (CD models): Accumulator knob • Turn knob clockwise to its full limit of travel.
improperly set after coins were inserted.
Metered Models (CD models): Inoperative run
• Test run switch and replace if inoperative.
switch (accumulator).
Broken, loose, or incorrect wiring.
• Refer to wiring diagram located inside contactor box.
70269301
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9
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.
W002
2. MOTOR OVERLOAD PROTECTOR CYCLES REPEATEDLY
POSSIBLE CAUSE
TO CORRECT
Incorrect voltage.
• Refer to the Installation Manual for electrical
requirements.
• Remove part of load.
• Check cylinder for binding. Refer to Adjustment Section
for cylinder adjustment.
• Check with an electrician to ensure that wiring is
adequate.
• Refer to Installation Manual for make-up air
requirements.
• Clean lint accumulation on and around the motor.
• Refer to wiring diagram located inside contactor box.
Clothes load too large.
Clothes cylinder is binding.
Inadequate wiring.
Inadequate make-up air.
Poor maintenance.
Broken, loose, or incorrect wiring.
3. MOTOR RUNS BUT CYLINDER DOES NOT TURN.
POSSIBLE CAUSE
TO CORRECT
Motor drive pulley loose.
Sheave loose.
Broken or loose belt.
Cylinder is binding.
•
•
•
•
Confirm key is in place, tighten setscrews.
Confirm key is in place, tighten setscrews and bushing.
Replace or adjust belt.
Check cylinder for binding. Refer to Adjustment Section
for proper cylinder adjustment.
Cylinder turn counterclockwise when viewed from • Switch power leads L1 and L2 to correct rotation.
front of machine. (3 Phase models only)
4. MOTOR DOES NOT STOP
POSSIBLE CAUSE
TO CORRECT
Inoperative door switch.
Non-Metered Models: Inoperative timer or relay.
Metered Models: Inoperative accumulator.
Incorrect wiring.
Inoperative motor relay or motor contactor.
•
•
•
•
•
10
Test switch and replace if inoperative.
Test timer and relay and replace if inoperative.
Test accumulator and replace if inoperative.
Refer to wiring diagram located inside contactor box.
Check relay/contactor and replace if inoperative.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE
POSSIBLE CAUSE
TO CORRECT
Improper or inadequate exhaust or make-up air
system.
Blown fuses or tripped circuit breakers.
Drying timer not selected or inoperative.
“No Heat” selected on control.
Inoperative control relay.
Inoperative thermistor.
• Refer to the Installation Manual for exhaust and makeup air requirements.
• Check fuses or circuit breakers.
• Set drying timer or replace if necessary.
• Select temperature option.
• Test relay and replace if inoperative.
• Test thermistor by removing harness from thermistor
terminals. Check resistance across terminals, should read
approximately 50,000 Ohms at 77°F. Resistance should
decrease with a temperature increase. Replace thermistor
if inoperative.
• Check heat contactors and elements. Replace if necessary.
Electric Models:
Inoperative heating elements or contactors.
Gas Models:
Insufficient gas supply.
Gas Models:
Incorrect orifices.
Gas Models:
Inoperative gas valve coils.
Gas Models: Inoperative igniter.
Gas Models: Inoperative igniter control.
• 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.
• Tumbler is equipped for type of gas specified on serial
plate at 0-2,000 feet altitude. Refer to Installation
Manual.
• Test coils and replace if available as a service part,
otherwise replace valve.
• Test igniter and replace if inoperative.
• Test igniter control and replace if inoperative.
(continued on next page)
70269301
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11
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.
W002
5. HEATING ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE (continued)
POSSIBLE CAUSE
TO CORRECT
Gas and Electric Models:
Inoperative high limit thermostat.
Gas and Electric Models:
Inoperative airflow switch.
• Test thermostat and replace if inoperative.
Gas and Electric Models:
Airflow switch out of adjustment.
Lint door panel not closed properly.
Broken, loose, or incorrect wiring.
12
• 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 to ensure that ductwork and make-up air
openings are sized properly.
• Check exhaust outlet. If a screen has been installed on the
outlet, it may be clogged with lint or frozen over in winter.
NEVER install a screen over the exhaust outlet.
• Refer to Adjustment Section for airflow switch
adjustment.
• Open lint door panel. Place lint door panel back on
tumbler ensuring a tight fit.
• Refer to wiring diagram located inside contactor box.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
6. IGNITER DOES NOT SHUT OFF AFTER GAS IGNITION — GAS BURNER
POSSIBLE CAUSE
TO CORRECT
Tumbler not properly equipped for type of gas
being used.
• Tumbler is equipped for type of gas specified on serial
plate at 0-2,000 feet altitude. Refer to Installation
Manual.
• Open partially closed gas shut-off valve, or correct low
gas pressure.
• Refer to Adjustment Section for recommended burner
flame adjustment.
• Check assembly for correct alignment.
• Test igniter control and replace if inoperative.
• Refer to wiring diagram located inside contactor box.
Insufficient gas supply.
Improperly adjusted burner flame.
Electrode assembly incorrectly installed.
Inoperative igniter control.
Incorrect wiring.
7. HEATING ELEMENT OR BURNER SHUTS OFF PREMATURELY
POSSIBLE CAUSE
TO CORRECT
Improper or inadequate exhaust and/or make-up air
system.
Gas Models:
Insufficient gas supply.
Gas Models:
Tumbler not properly equipped for type of gas
used.
Gas Models:
Improperly adjusted burner flame.
Cycling off on high limit thermostat.
Broken, loose or incorrect wiring.
• Refer to Installation Manual for exhaust and make-up air
requirements.
• Open partially closed gas shut-off valve, or correct low
pressure.
• Tumbler is equipped for type of gas specified on serial
plate at 0-2,000 feet altitude. Refer to Installation
Manual.
• Refer to Adjustment Section for burner flame adjustment.
70269301
• Refer to Paragraph 8.
• Refer to wiring diagram located inside contactor box.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
13
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.
W002
8. HEATING ELEMENT OR BURNER REPEATEDLY CYCLES OFF ON HIGH LIMIT
THERMOSTAT
POSSIBLE CAUSE
TO CORRECT
External exhaust system is longer than
recommended or inadequate make-up air.
Clogged lint screen.
• Refer to Installation Manual for exhaust and make-up air
requirements.
• Remove screen and clean. Lint screen and compartment
should be cleaned after every eight hour shift.
• Clean tumbler ducts.
• Disassemble exhaust system and clean.
• Replace thermostat.
Lint in tumbler ducts.
Lint in external exhaust system.
High limit thermostat cycling at too low a
temperature.
Lint door panel not closed properly.
Backdraft damper not operating.
• Open lint door panel, place lint door panel back on
tumbler ensuring a tight fit.
• Check for foreign objects, lint accumulation or other
possible obstructions.
9. HEATING ELEMENT OR BURNER DOES NOT SHUT-OFF
POSSIBLE CAUSE
TO CORRECT
Gas Models:
Impurities on gas valve seat, preventing valve
from closing.
Inoperative drying timer, relay or contactor.
Incorrect wiring.
• Replace gas valve.
• Replace timer, relay or contactor.
• Refer to wiring diagram located inside contactor box.
10. CLOTHES DO NOT DRY
POSSIBLE CAUSE
TO CORRECT
Heat source inoperative.
Too much water in articles being dried.
Clothes load too large.
Improper or inadequate exhaust system.
Heat source shuts-off prematurely.
Drying timer improperly set.
Incorrect voltage.
Inadequate make-up air.
•
•
•
•
•
•
•
•
14
Refer to Paragraph 5.
Remove excess water.
Remove part of load.
Refer to Installation Manual for exhaust requirements.
Refer to Paragraph 7.
Set selector for higher setting.
Refer to Installation Manual for electrical requirements.
Refer to Installation Manual for make-up air
requirements.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
11. TUMBLER OVERHEATING
POSSIBLE CAUSE
TO CORRECT
Gas Models:
Incorrect main burner orifices.
Gas Models:
Gas pressure too high.
Inadequate make-up air.
• Replace orifices. Refer to the Installation Manual for
burner orifice requirements.
• Gas pressure must be as specified on serial plate.
• Refer to Installation Manual 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 for exhaust
system requirements.
Inoperative thermistor.
• Test thermistor by removing harness from thermistor
terminals. Check resistance across terminals, should read
approximately 50,000 Ohms at 77°F. Resistance should
decrease with a temperature increase. Replace thermistor
if inoperative.
Inoperative cabinet limit or burner limit thermostat. • Check thermostats with Ohm meter and replace if open.
12. BURNERS NOT BURNING PROPERLY — GAS MODELS
POSSIBLE CAUSE
TO CORRECT
Burner air shutters incorrectly adjusted.
Dirt in burners.
Gas pressure too high or too low.
• Refer to Adjustment Section for proper flame adjustment.
• Disassemble burners and blow out the dirt.
• Check serial plate on back of the tumbler for correct gas
pressure.
• Tumbler is equipped for type of gas specified on serial
plate at 0-2,000 feet altitude. Refer to Installation
Manual.
• Refer to Installation Manual for proper make-up air
requirements.
• Disassemble and clean exhaust system.
Incorrect orifices.
Make-up air inadequate or pressured.
Restricted or blocked exhaust duct.
13. LOADING DOOR OPENS DURING OPERATION
POSSIBLE CAUSE
TO CORRECT
Door strike improperly adjusted.
Tumbler improperly leveled.
• Refer to Adjustment Section for door strike adjustment.
• Refer to Adjustment Section for leveling leg adjustment.
70269301
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15
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.
W002
14. TUMBLER RUNS BUT NO STEAM TO COILS — STEAM MODELS
POSSIBLE CAUSE
TO CORRECT
Valves closed.
• 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.
• Check for inlet and outlet markings on check valve, and
invert if necessary.
• Remove strainer and clean.
• Test timer. Test thermistor by removing harness from
thermistor terminals. Check resistance across terminals,
should read approximately 50,000 Ohms at 77°F.
Resistance should decrease with a temperature increase.
Replace either if inoperative.
Blocked steam trap.
Inoperative solenoid valve.
Incorrect installation of check valve.
Clogged strainer.
Inoperative timer or thermistor.
15. WATER IN STEAM LINE — STEAM MODELS
POSSIBLE CAUSE
TO CORRECT
Incorrect installation of steam piping.
Trap functioning improperly.
• Refer to Installation Manual for steam requirements.
• Check trap for size and capacity. If trap is dirty or sluggish
clean thoroughly or replace. Check return line for high
back pressure.
16
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
16. TROUBLESHOOTING ELECTRONIC CONTROL MODELS
PROBLEM
POSSIBLE CAUSE
Door Open light and
Door switch faulty.
display flash with door Lint panel switch faulty.
closed
Electrical service connected
incorrectly.
Display shows “SH”
and signals sounds
Display shows “OP”
and signal sounds
three minutes after
tumbler is started
70269301
Temperature at sensor is over 191°F
(88.3°C).
Temperature sensor shorted.
Temperature at sensor is under 24°F
(-4.4°C).
Temperature sensor open.
TO CORRECT
Replace door switch.
Replace lint panel switch.
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.
Allow tumbler to cool and press ON/SELECT
pad. If display still shows “SH”, replace sensor.
Replace temperature sensor.
If the temperature of the tumbler is above 24°F
(-4.4°C), replace temperature sensor.
Replace temperature sensor.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
17
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.
W002
17. TUMBLER WILL NOT START, TIME ON DRYING TIMER, DOOR CLOSED
(Manual Timer Models)
CHECK FOR
24 VOLTS
INTO
DOOR
SWITCH
YES
CHECK FOR
24 VOLTS
OUT OF
DOOR
SWITCH
NO
YES
NO
CHECK
ELECTRICAL
SERVICE
TO TUMBLER
(Transformer/
Fuses)
CHECK FOR
24 VOLTS ON
TERMINAL 5 OF
CONTROL RELAY
YES
CHECK POWER
SUPPLY TO
TUMBLER AND
WIRES TO RELAY
NO
CHECK FOR
24 VOLTS ON
TERMINAL B
OF DRYING TIMER
NO
REPLACE
LINT PANEL
SWITCH
CHECK FOR
24 VOLTS INTO
PUSH-TO-START
SWITCH
YES
YES
NO
CHECK
LINT PANEL
SWITCH FOR
BROKEN WIRE
OR POOR
CONNECTION
AT HARNESS
PLUG
YES
NO
REPLACE
RELAY
NO
CHECK FOR
24 VOLTS
ACROSS COIL
TERMINALS OF
CONTROL RELAY
REPLACE
TIMER
PRESS
PUSH-TO-START
SWITCH. CHECK FOR
24 VOLTS OUT
OF PUSH-TO-START
SWITCH
YES
CHECK FOR
24 VOLTS TO
MOTOR RELAY
COIL
YES
NO
NO
CHECK FOR
LINE VOLTAGE
IN AND OUT OF
RELAY
CHECK FOR
24 VOLTS AT
YES
TERMINAL 3 OF
CONTROL
RELAY
HAS
LINT PANEL
SWITCH
BEEN
ACTUATED?
HAS
DOOR SWITCH
BEEN
ACTUATED?
YES
YES
NO
REPLACE
DOOR
SWITCH
18
CHECK FOR
24 VOLTS
OUT OF
LINT PANEL
SWITCH
NO
CHECK FOR
BROKEN WIRE
FROM CONTROL
RELAY TERMINAL 5
YES
CHECK MOTOR
CONNECTIONS
PER WIRING
DIAGRAM
NO
CORRECT
WIRING
REPLACE
PUSH-TO-START
SWITCH
YES
CHECK FOR
LINE VOLTAGE
AT MOTOR
TERMINALS
YES
CHECK FOR
BROKEN WIRE
OR POOR
CONNECTION
AT HARNESS PLUG
REPLACE
MOTOR
NO
CHECK
CONNECTIONS
AND HARNESS
CONTINUITY
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
18. MOTOR RUNS, TIME ON DRYING TIMER BUT NO HEAT
POWER INTO
POWER OUT OF
TEMPERATURE NO TEMPERATURE
CONTROL
CONTROL
BOARD
BOARD
NO
COIN SWITCH B
NORMALLY CLOSED
(CD MODELS)
YES
YES
CHECK
THERMISTOR
AND CABLE,
IF OK REPLACE
TEMPERATURE
CONTROL BOARD
CHECK THE
IGNITION
CIRCUIT
CHECK FOR
BROKEN OR
LOOSE WIRE AT
HARNESS PLUG
YES
YES
NO
ADJUST
AIRFLOW
SWITCH
YES
POWER ACROSS
COIL TERMINALS OF
CONTROL RELAY
YES
REPLACE
CONTROL RELAY
POWER OUT OF
BURNER
HIGH LIMIT
THERMOSTAT
YES
YES
YES
POWER INTO
AIRFLOW
SWITCH
CHECK FOR
LOOSE OR
BROKEN WIRE
FROM CABINET
LIMIT
REPLACE
BURNER
HIGH LIMIT
THERMOSTAT
POWER INTO
CABINET
HIGH LIMIT
THERMOSTAT
CHECK FOR
BROKEN WIRE
FROM
MOTOR SWITCH
YES
YES
NO
NO
NO
AIRFLOW
SWITCH
CLOSED
NO
REPLACE
SWITCH B OR
ACCUMULATOR
NO
CHECK FOR
BROKEN WIRE
FROM AIRFLOW
SWITCH
POWER OUT OF
AIRFLOW
SWITCH
YES
LOOSE OR
BROKEN WIRE TO
TEMPERATURE
CONTROL BOARD
NO
REPAIR
WIRE
70269301
POWER ON
TERMINAL 6 OF
CONTROL RELAY
(MANUAL TIMER
MODELS)
YES
POWER INTO
BURNER
HIGH LIMIT
THERMOSTAT
NO
NO
POWER ON
TERMINAL 4 OF
CONTROL RELAY
(MANUAL TIMER
MODELS)
COIN SWITCH B
COMMON
(CD MODELS)
POWER OUT OF
CABINET
HIGH LIMIT
THERMOSTAT
NO
YES
CHECK FOR
LOOSE OR
BURNED
CONNECTION
AT HARNESS
PLUGS
REPLACE
THERMOSTAT
REPLACE
AIRFLOW
SWITCH
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
19
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.
W002
19. NO MAIN BURNER FLAME, IGNITER DOES NOT SPARK
IGNITER
SPARKING
NO
IEI CONTROL IN
SAFETY LOCKOUT
RESET BY OPENING
AND CLOSING DOOR
NO
YES
YES
GREEN WIRE
FROM
IEI CONTROL
CONNECTED TO
GROUND
TERMINAL?
OPEN AND
CLOSE DOOR
NO
RESISTANCE OF
HIGH VOLTAGE LEAD
GREATER THAN 25,000
OHMS OR LESS THAN
5,000 OHMS
NO
IGNITER GAP IS
NOT 5/32 IN.
NO
(.397 CM)
OR CERAMIC
CRACKED
YES
REPLACE
HIGH VOLTAGE
LEAD
REPLACE
IEI
CONTROL
YES
RE-GAP OR
REPLACE
IGNITER
CONNECT
GREEN WIRE TO
GROUND TERMINAL
YES
GAS SHUT-OFF
VALVE
OPEN?
NO
OPEN GAS
SHUT-OFF
VALVE
NO
REPLACE
IEI
CONTROL
YES
24 VOLTS
PRESENT ON
WHITE/BLACK
WIRE FROM
IEI CONTROL
YES
CHECK GAS
VALVE COILS
REPLACE
AS REQUIRED
20
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
20. STEAM OM MODELS: NO HEAT WITH CYCLE SELECTED, UNIT RUNNING AND CALLING
FOR HEAT
120 Volt/60 Hertz/1 Phase and 208-240 Volt/60 Hertz/1 Phase Nonreversing
460-480 Volt/60 Hertz/3 Phase and 208-240 Volt/60 Hertz/3 Phase Reversing and Nonreversing
Step Problem
If No, then
1
2
3
Is there voltage at H2-13? If yes, continue to next step.
Is there voltage at H2-6? If yes, continue to next step.
Is there voltage at H2-5? If yes, continue to next step.
4
Is there voltage to the input of the motor relay? If yes,
continue to next step.
Is there voltage to the output of the motor relay?
Is there voltage to the input of the motor switch? If yes,
continue to next step.
Is there voltage to the output of the motor switch? If yes,
continue to next step.
Is there voltage across the steam valve coil? If yes,
continue to next step.
Unit operational. If unit still doesn’t heat, check steam
supply.
Replace micro control.
Correct wiring between H2-6 and H2-13.
Check for proper thermistor operation. Replace micro
control if necessary.
Correct wiring between motor relay and micro control.
5
6
7
8
9
70269301
Replace motor relay.
Correct wiring to motor switch.
Replace motor.
Correct wiring to steam valve coil.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
21
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.
W002
21. OM AND RM MODELS: NO START WITH CYCLE SELECTED, START BUTTON PRESSED AND
DOOR CLOSED
120 Volt/60 Hertz/1 Phase Gas and Steam Nonreversing
208-240 Volt/60 Hertz/1 or 3 Phase Steam Nonreversing
208-240 Volt/60 Hertz/3 Phase Electric Nonreversing
460-480 Volt/60 Hertz/3 Phase Gas, Electric and Steam Nonreversing
Step Problem
If No, then
1
Correct wiring to transformer primary. Check fuses.
2
3
4
5
6
7
8
9
10
11
12
13
22
Is there voltage to the primary of the transformer? If yes,
continue to next step.
Is there 24 VAC across terminals 2 & 3 of transformer
secondary? If yes, continue to next step.
Is there voltage to the COM terminal of the door switch?
If yes, continue to next step.
Is there voltage to the N.O. terminal of the door switch? If
yes, continue to next step.
Is there voltage to the COM terminal of the lint panel
switch? If yes, continue to next step.
Is there voltage to the N.O. terminal of the lint panel
switch? If yes, continue to next step.
Is there voltage to terminal H2-8 on the micro control? If
yes, continue to next step.
Is there voltage at terminal H2-7 on the micro control? If
yes, continue to next step.
Is there voltage across the coil of motor relay? If yes,
continue to next step.
Is there voltage to the input of the motor relay? If yes,
continue to next step.
Is there voltage to the output of the motor relay? If yes,
continue to next step.
Does the motor operate? If yes, continue to next step.
Unit operational.
Replace transformer.
Correct wiring between door switch and transformer.
Check fuse.
Check door switch for proper operation. Replace if
necessary.
Correct wiring between lint panel switch and loading door
switch.
Check lint panel switch for proper operation. Replace if
necessary.
Correct wiring between micro control and lint panel
switch.
Replace micro control.
Correct wiring between motor relay and micro control.
Correct wiring between motor relay and supply voltage.
Replace motor relay.
Replace motor.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
22. OM MODELS: NO DISPLAY AFTER SELECTING ONE OF THE ON/SELECT KEYS
120 Volt/60 Hertz/1 Phase Gas and Steam Nonreversing
208-240 Volt/60 Hertz/1 Phase Gas and Steam Nonreversing
208-240 Volt/60 Hertz/3 Phase Gas and Steam Reversing/Nonreversing
208-240 Volt/60 Hertz/3 Phase Electric Reversing/Nonreversing
460-480 Volt/60 Hertz/3 Phase Gas, Electric and Steam Reversing/Nonreversing
Step Problem
If No, then
1
Correct wiring between transformer and supply voltage.
Check fuses.
Replace transformer.
2
3
4
5
6
Is there voltage across the primary of the transformer? If
yes, continue to next step.
Is there 24 VAC across terminals 1 & 4 of transformers
secondary? If yes, continue to next step.
Is there 24 VAC across terminals H3-3 and H3-4 on the
micro control? If yes, continue to next step.
Is there voltage to the input of the fuse on the micro
control? If yes, continue to next step.
Is there voltage to the opposite side of the fuse on the
micro control? If yes, continue to next step.
Replace micro control.
70269301
Correct wiring between H3 and transformer.
Replace micro control.
Check fuse making sure it is not blown. Replace if
necessary.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
23
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.
W002
23. ELECTRIC OM MODELS: NO HEAT WITH CYCLE SELECTED, UNIT RUNNING AND
CALLING FOR HEAT
460-480 Volt/60 Hertz/3 Phase and 208-240 Volt/60 Hertz/3 Phase Reversing and Nonreversing
Step Problem
1
2
3
If No, then
18
Replace micro control.
Correct wiring between H2-6 and H2-13.
Check for proper thermistor operation. Replace micro
control if necessary.
Is there voltage to terminal 14 of the motor relay? If yes, Correct wiring between motor relay and micro control.
continue to next step.
Is there voltage to terminal 13 of the motor relay? If yes, Replace motor relay.
continue to next step.
Is there voltage at white/brown fan motor centrifugal
Correct wiring between relay and motor switch.
switch?
Is there voltage at orange/brown fan motor centrifugal
Replace motor.
switch?
Is there voltage to cabinet limit black wire?
Correct wiring between fan motor centrifugal switch and
cabinet limit thermostat.
Is there voltage out of cabinet limit white wire?
Replace thermostat.
Is there voltage to airflow switch orange wire (common
Correct wiring between cabinet limit and airflow switch.
terminal)?
Is there voltage to the N.O. terminal of the airflow switch? Check for proper airflow. Replace airflow switch.
If yes, continue to next step.
Is there voltage to the input of the stove limit? If yes,
Correct wiring between stove limit and airflow switch.
continue to next step.
Is there voltage to the output of the stove limit? If yes,
Check for proper airflow. Replace stove limit if necessary.
continue to next step.
Is there voltage across coil of HC1?
Correct wiring to HC1.
Is there voltage to terminals T1, T2 and T3 of HC1? If yes, Correct wiring between HC1 and supply.
continue to next step.
Is there voltage to terminals L1, L2 and L3 of HC1?
Replace HC1.
Is there voltage across the elements? If yes, then continue Correct wiring to the elements.
to next step.
Do the elements produce heat? If yes, continue to Step 16. Check for opens or shorts in the elements.
19
NOTE: If elements are glowing a bright red/orange, there
is not enough airflow.
Unit operational.
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Is there voltage at H2-13? If yes, continue to next step.
Is there voltage at H2-6? If yes, continue to next step.
Is there voltage at H2-5? If yes, continue to next step.
(continued)
24
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
24. GAS OM MODELS: NO HEAT WITH CYCLE SELECTED, UNIT RUNNING AND CALLING FOR
HEAT
120 Volt/60 Hertz/1 Phase and 208-240 Volt/60 Hertz/1 Phase Nonreversing
460-480 Volt/60 Hertz/3 Phase and 208-240 Volt/60 Hertz/3 Phase Reversing and Nonreversing
Step Problem
If No, then
1
2
Replace micro control.
Correct wiring between H2-6 and H2-13 on the micro
control.
Check for proper thermistor operation. Replace micro
control if necessary.
Correct wiring between motor relay and micro control.
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Is there voltage at H2-13? If yes, continue to next step.
Is there voltage at H2-6 of the micro control?
If yes, continue to next step.
Is there voltage at H2-5 of the micro control?
If yes, continue to next step.
Is there voltage to input of the motor relay? If yes,
continue to next step.
Is there voltage to the output of the motor relay? If yes,
continue to next step.
Is there voltage to the input of fan motor switch? If yes,
continue to next step.
Is there voltage out from the fan motor switch? If yes,
continue to next step.
Is there voltage to the input of the cabinet limit? If yes,
continue to next step.
Is there voltage to the output of the cabinet limit? If yes,
continue to next step
Is there voltage to COM terminal of the airflow switch?
If yes, continue to next step.
Is there voltage to the N.O. terminal of the airflow switch?
If yes, continue to next step.
Is there voltage to the input of the stove limit? If yes,
continue to next step.
Is there voltage to the output of the stove limit? If yes,
continue to next step.
Is there voltage to terminal 2 of the ignition control?
If yes, continue to next step.
Does the igniter spark? If yes, continue to next step.
Replace motor relay.
Correct wiring to fan motor switch?
Replace fan motor.
Correct wiring between cabinet limit and CR1.
Replace cabinet limit.
Correct wiring between airflow switch and cabinet limit.
Check for proper operation and airflow. Replace airflow
switch if necessary.
Correct wiring between stove limit and airflow switch.
Check for proper airflow. Replace stove limit if necessary.
Correct wiring between ignition control and stove limit.
Check for proper gap on igniter and check for proper
resistance of ignition cable. Replace if necessary.
Is there voltage at terminal 1 of the ignition control? If yes, Replace ignition control.
continue to next step.
Is there voltage across the gas valve? If yes, continue to Correct wiring to gas valve.
next step.
Is there a flame? If yes, continue to next step.
Check for gas flow and proper gas pressure. Replace gas
valve or coils of gas valve.
Unit operational.
70269301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
25
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.
W002
25. OM MODELS: NO FAN MOTOR ROTATION WITH CYCLE SELECTED AND START PRESSED
208-240 Volt/60 Hertz/3 Phase and 480 Volt/60 Hertz/3 Phase Electric Reversing Models
208-240 Volt/60 Hertz/3 Phase and 460-480 Volt/60 Hertz/3 Phase Gas Reversing and Steam Models
Step Problem
If No, then
1
Correct wiring to transformer. Check fuses.
2
3
4
5
6
7
8
9
10
11
12
13
26
Is there voltage across the primary of the transformer?
If yes, continue to next step.
Is there 24 VAC across terminals 2 & 3 of the transformer
secondary? If yes, continue to next step.
Is there voltage to the COM of the door switch?
If yes, continue to next step.
Is there voltage to the N.O. terminal of the door switch?
If yes, continue to next step.
Is there voltage into lint panel switch? If yes, continue to
next step.
Is there voltage out of lint panel switch? If yes, continue to
next step.
Is there voltage to H2-8 of micro control? If yes, continue
to next step.
Is there voltage to H2-7 of micro control? If yes, continue
to next step.
Is there voltage across the coil of the M contactor? If yes,
continue to next step.
Is there voltage to L1, L2 and L3 of the M contactor?
If yes, continue to next step.
Is there voltage toT1, T2 and T3 of the M contactor?
If yes, continue to next step.
Is there voltage across L1, L2 and L3 of the motor?
If yes, continue to next step.
Unit operational.
Replace transformer.
Correct wiring to door switch. Check fuse.
Check door switch for proper operation. Replace if
necessary.
Correct wiring between door switch and lint panel switch.
If actuated replace inoperative switch. If not actuated
adjust switch as needed.
Correct wiring between micro control and door switch.
Replace micro control.
Correct the wiring to the M contactor.
Correct wiring between M contactor and supply voltage.
Replace M contactor.
Correct wiring between motor and M contactor.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
26. OM REVERSING MODELS: NO CYLINDER ROTATION OR REVERSING CAPABILITIES
208-240 Volt/60 Hertz/3 Phase and 480 Volt/60 Hertz/3 Phase Electric Models
208-240 Volt/60 Hertz/3 Phase and 460-480 Volt/60 Hertz/3 Phase Gas and Steam Models
Step Problem
If No, then
1
Correct wiring between transformer and supply voltage.
Check fuses.
Replace transformer.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Is there voltage across the primary of the transformer?
If yes, continue to next step.
Is there voltage across terminals 2 & 3 of the transformer
secondary? If yes, continue to next step.
Is there voltage to the COM of the door switch?
If yes, continue to next step.
Is there voltage to the N.O. terminal of the door switch?
If yes, continue to next step.
Is there voltage into lint panel switch? If yes, continue to
next step.
Is there voltage out of lint panel switch? If yes, continue to
next step.
Is there voltage to H2-8 terminal of micro control?
If yes, continue to next step for forward rotation, or Step 11
for reverse rotation.
Forward Rotation: Is there voltage to H2-3 of micro
control? If yes, continue to next step.
Is there voltage across the coil of the forward relay?
If yes, continue to next step.
Is there voltage to terminals L1, L2 and L3 of the forward
relay? If yes, continue to next step.
Is there voltage to terminals T1, T2 and T3 of the forward
relay? If yes, continue to next step.
Is there voltage across L1, L2 and L3 of the motor?
If yes, continue Step 16.
Reverse Rotation: Is there voltage to H2-4 of micro
control? If yes, continue to next step.
Is there voltage across the coil of the reverse relay?
If yes, continue to next step.
Is there voltage to terminals X, Y and Z of the reversing
relay? If yes, continue to next step.
Is there voltage to terminals U, V and W of the reversing
relay? If yes, continue to next step.
Is there voltage across L1, L2 and L3 of the motor?
If yes, continue to next step.
Does the motor turn? If yes, continue to next step.
Does the cylinder rotate? If yes, continue to next step.
Unit operational.
70269301
Correct wiring to door switch. Check fuses.
Correct wiring and check fuses.
Correct wiring between door switch and lint panel switch.
If actuated replace inoperative switch. If not actuated
adjust switch as needed.
Correct wiring between micro control and door switch.
Make sure unit is in the forward portion of rotation.
Replace micro control.
Correct the wiring to the relay.
Correct wiring between relay and supply voltage.
Replace forward relay.
Correct wiring between motor and forward relay.
Make sure unit is in the reverse portion of rotation.
Replace micro control.
Correct the wiring to the relay.
Correct wiring between relay and supply voltage.
Replace reversing relay.
Correct wiring between motor and reversing relay.
Replace motor.
Check drive components between motor and cylinder.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
27
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.
W002
27. CD MODELS: NO START WITH VEND SATISFIED AND START BUTTON PRESSED IN
NOTE: All voltage checks are referenced to neutral unless stated otherwise.
Step Problem
If No, then
1
Correct wiring between L1 and switch A.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
28
Is there voltage to NC terminal of switch A?
If yes, continue to next step.
Is there voltage to the COM terminal of switch A?
If yes, continue to next step.
Is there voltage to H1-2 at time delay board? If yes,
continue to next step.
Is there voltage to H1-3 at time delay board? If yes,
continue to next step.
Is there voltage to the common terminal of the door switch?
If yes, continue to next step.
With the door closed, is there voltage to the N.O. terminal
of the door switch? If yes, continue to next step.
Is there voltage at COM of lint panel switch? If yes,
continue to next step.
Is there voltage to NO of lint panel switch? If yes, continue
to next step.
Is there voltage to the input side of the Push-To-Start
button? If yes, continue to next step.
Is there voltage at output of push-to-start switch? If yes,
continue to next step.
Is there voltage to the input side of the auxiliary contacts on
the motor contactor? If yes, continue to next step.
Is there voltage across the coil of the motor control
contactor?
If the start button is released, does the motor contactor stay
in the made position? If yes, continue to next step.
Is there voltage to motor contactor? If yes, continue to next
step.
Is there voltage out of the motor contactor? If yes, continue
to next step.
Is there voltage to the motor? If yes, continue to next step.
Is the internal wiring of the motor correct for the supply
voltage?
Thermal overload cycled, allow motor to cool and recheck.
Unit operational.
Check for proper operation of switch A. Replace switch
A if necessary.
Correct wiring between switch A and H1-2 at time delay
board.
Replace time delay board.
Correct wiring between door switch and switch A.
Check door switch for proper operation, replace if
necessary.
Correct wiring between door switch and lint panel switch.
Adjust switch as needed.
Correct wiring between start switch and lint panel switch.
Replace switch.
Correct wiring between motor contactor and lint panel
switch.
Correct wiring between motor contactor and Push-ToStart button.
Check for proper operation of motor contactor and fan
motor centrifugal switch, replace if necessary.
Correct wiring between motor contactor and supply.
Check for proper operation. Replace motor contactor if
necessary.
Correct wiring between motor contactor and motor.
Change the wiring accordingly.
Replace motor.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
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.
W002
28. CD MODELS: NO HEAT WITH VEND SATISFIED AND UNIT RUNNING
NOTE: All voltage checks are referenced to neutral unless stated otherwise.
Step Problem
If No, then
1
Replace motor.
2
3
4
5
6
7
8
9
Is there voltage to the output of the motor switch?
If yes, continue to next step.
Is there voltage to the input of the cabinet limit?
If yes, continue to next step.
Is there voltage to the output of the cabinet limit?
If yes, continue to next step.
Is there voltage to the COM terminal of the airflow switch?
If yes, continue to next step.
Is there voltage to the N.O. terminal of the airflow switch?
If yes, continue to next step.
Is there voltage to the input of the stove limit?
If yes, continue to next step.
Is there voltage to the output of the stove limit?
If yes, continue to next step.
Is there voltage to the COM terminal of switch B?
If yes, continue to next step.
Is there voltage to the N.C. terminal of switch B?
If yes, continue to next step.
Is there voltage to temperature control board? If yes,
continue to next step.
Is there voltage to temperature control board? If yes,
continue to next step.
Correct wiring between cabinet limit and motor switch.
Check for proper operation, replace if necessary.
Correct wiring between airflow switch and cabinet limit.
Check for proper airflow and function of the airflow
switch. Replace airflow switch if necessary.
Correct wiring between stove limit and airflow switch.
Check for blockage and proper airflow. Replace stove
limit if necessary.
Correct wiring between switch B and stove limit.
Check for proper operation, replace switch B if
necessary.
10
Check for voltage at thermistor, or correct wiring
between thermostat and switch B.
11
Disconnect thermistor wires and check resistance across
terminals. Should read approximately 50,000 Ohms at
77°F. Resistance should decrease with a temperature
increase. Replace board if necessary.
12
Is there voltage to the output? If yes, continue to next step. Correct wiring between IEI board and temperature
control board.
13
Does the igniter spark? If yes, continue to next step.
Check for proper igniter gaps and resistance for high
voltage lead.
14
Is there voltage across V1 and V3 of the IEI board?
Replace IEI board.
If yes, continue to next step.
15
Is there voltage across the coils of the gas valve?
Correct wiring between gas valve and IEI board.
If yes, continue to next step.
16
Is there a flame? If yes, unit is operational.
Continue to next step.
17
Is there gas pressure on the output side of the gas valve?
Replace gas valve.
If yes, continue to next step.
18
Check for proper gas pressure. 3.5 water column inches for
Natural Gas, 10.5 water column inches for L.P. Gas.
† Proper gaps for igniter: 5/16 above burner and 5/32 between electrode and grounding tab. The proper resistance of the high
voltage lead is between 5,000 Ohms and 25,000 Ohms.
70269301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
29
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.
W002
29. CD MODELS: NO START WITH VEND SATISFIED AND START BUTTON PUSHED
240 Volt/60 Hertz/1 Phase Gas Nonreversing
NOTE: All voltage checks are referenced to neutral unless stated otherwise.
Step Problem
If No, then
1
Correct wiring between L1 on TBI and switch A.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Is there voltage to the NC terminal of switch A?
If yes, continue to next step.
Is there voltage to COM terminal of switch A?
If yes, continue to next step.
Is there voltage to H1-2 on time delay board? If ye,s
continue to next step.
Is there voltage to H1-3 on time delay board? If yes,
continue to next step.
Is there voltage to COM terminal of the door switch?
If yes, continue to next step.
With the door closed, is there voltage to the N.O. terminal
of the door switch? If yes, continue to next step.
Is there power at COM of lint panel switch? If yes,
continue to next step.
Is there power at NO of lint panel switch?
Is there voltage to the input side of the start switch?
If yes, continue to next step.
With the start button pressed in, is there voltage to the
output side of the start button? If yes, continue to next step.
Is there voltage to terminal 1 of the control relay?
If yes, continue to next step.
Is there voltage to coil of the motor relay? If yes, continue
to next step.
Is there live power to motor relay input? If yes, continue to
next step.
Is there live power out of motor relay? If yes, continue to
next step.
Is there voltage to terminal 1 of the motor? If yes, continue
to next step.
Does the motor run? If yes, continue to next step.
Unit operational.
Check for proper operation of switch A. Replace switch
A if necessary.
Correct wiring between siwtch A and H1-2 at time delay
board.
Replace time delay board.
Correct wiring between door switch and switch A of the
rotary coin drop.
Check door switch for proper operation, replace if
necessary.
Correct wiring between door switch and lint panel switch.
Adjust switch as needed.
Correct wiring between start switch and lint panel switch.
Replace start switch.
Correct wiring to terminal 1 of the control relay.
Check for proper operation. Replace relay if necessary.
Correct wiring between input terminal block and relay.
Replace contactor.
Correct wiring between motor and start switch.
Replace the motor.
NOTE: If the motor only runs with the start switch pressed in, that means the centrifugal switch in the motor
is bad. Replace the motor.
30
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 4
Grounding
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
WARNING
To reduce the risk of fire and electric shock, check with a qualified serviceperson for proper
grounding procedures. Improper connection of the equipment grounding conductor may result
in a risk of electric shock.
W068R1
WARNING
To reduce the risk of fire and electric shock, if electrical supply is coming from a three phase
service, DO NOT connect a “High Leg” or “Stinger Leg” to a single phase machine. On a three
phase machine, if there is a “High Leg” or “Stinger Leg” it should be connected to L3.
W069
Grounding Instructions
Tumbler must be grounded. In the event of malfunction
or breakdown, grounding will reduce the risk of electric
shock by providing the path of least resistance for
electric current. Tumbler must be connected to a
grounded metal, permanent wiring system; or an
equipment grounding conductor must be run with the
circuit conductors and connected to the appropriate
ground location.
NOTE: To ensure protection against shock, this
tumbler MUST be electrically grounded in
accordance with local codes, or in the absence of
local codes, with the latest edition of the National
Electrical Code ANSI/NFPA No. 70. In Canada the
electrical connections are to be made in accordance
with CSA C22.1 or the latest edition of the
Canadian Electrical Code, Part I and/or local codes.
Electrical work should be done by a qualified
electrician.
WARNING
All electrical connections should be made
by a qualified electrician.
To reduce the risk of electrical shock, deenergize the electrical circuit being
connected to the tumbler before making any
electrical connections. Never attempt to
connect a live circuit.
W070
70269301
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31
Section 5
Service Procedures
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
IMPORTANT: References made to the left or right
hand direction are taken from the operator’s
position facing the front of the tumbler.
30. CONTROLS
a. Unlock and remove control panel.
b. Remove two screws holding control assembly
to tumbler. Pivot control to left, disconnect wire
harness plugs and remove control assembly.
IMPORTANT: When handling electronic controls,
use a ground wrist strap. Due to the sensitivity of
electronic controls, careful handling is required.
Wrist strap, cord and alligator clip are designed to
carry away any electrostatic charge from your body
and to direct charge to an available ground. By
using this static protection device, potential
electrostatic discharge problems associated with
handling of electronic control will be minimized.
Always handle electronic control by its metal edges.
If a wrist strap is not available, touch tumbler while
it is plugged in before handling control to dissipate
any charge.
70269301
31. PUSH-TO-START SWITCH
a. Remove control.
b. Disconnect wires from switch terminals and
compress locking tabs to remove switch.
NOTE: Refer to wiring diagram when rewiring
switch.
32. COOLING, DRYING, OR RUN LIGHT
a. Remove control.
b. Disconnect light wire leads.
NOTE: On Coin Meter Models, the run light white
lead must be joined to the wire harness white lead
using a double spade connector. Remove the single
spade lug from the replacement run light white
wire.
c. Compress locking tabs on sides of light and
push light out through front of control.
NOTE: Refer to wiring diagram when rewiring
light.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
33
Section 5 Service Procedures
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
33. COIN METER
Refer to Figure 1.
a. Remove control panel and control assembly.
b. Disconnect wires from heat and run switches.
c. Cut remaining motor wire and joining white
wire at wire nut.
d. Remove four speed nuts holding coin meter to
coin meter frame.
NOTE: Refer to wiring diagram when rewiring coin
meter. Connect wires cut in step “c” above with new
wire nut.
34. COIN METER TIMER MOTOR
Refer to Figure 1.
a. Remove controls.
b. Remove two screws holding motor to mounting
bracket.
c. Hold cam and drive fork against inside face of
motor mounting bracket and pull motor free of
cam and drive fork.
d. Disconnect motor leads.
e. Slide cam and drive fork out from under motor
mounting bracket.
35. COIN METER RUN OR HEAT SWITCH
Refer to Figure 1.
a. Remove controls.
b. Disconnect wires from switches on timer.
c. Hold switches and actuating bracket under
switches tightly together with one hand while
removing two screws holding switches to
timing motor mounting bracket. Carefully
remove the switches and actuating bracket
parts.
d. Assemble the two switches and the two parts
making up the switch actuating bracket.
e. Actuate the switches a number of times by
manually pressing the actuating plate against
the switch lever and plunger to ensure that the
actuating parts do not bind. If binding occurs,
reposition the actuating plate slightly until the
binding stops.
NOTE: Refer to wiring diagram when rewiring
switches.
NOTE: Refer to wiring diagram when rewiring
timer motor.
34
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
COIN
METER
TIMER
MOTOR
CAM AND
DRIVE FORK
SWITCH
ACTUATOR
BRACKET
RUN
SWITCH
HEAT
SWITCH
TMB1749S
Figure 1
70269301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
35
Section 5 Service Procedures
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
36. IGNITER
a. Remove control panel.
b. Disconnect high voltage lead from igniter.
c. Remove two screws attaching igniter bracket to
stove assembly.
37. IGNITION CONTROL
Refer to Figure 2.
a. Remove control panel.
b. Disconnect wire harness.
c. Remove high voltage lead.
IMPORTANT: Place unit in clean, dry area away
from work area to avoid damage. Do not attempt
field repair of the ignition control unit. Attempted
repair or tampering with the ignition control unit
will void its warranty.
d. Remove two screws attaching ignition control
unit to cabinet frame.
e. Remove ignition control.
38. GAS VALVE
Refer to Figure 2.
a. Remove control panel.
b. Close gas shut-off valve.
c. Disconnect all wires from gas valve terminals
and disconnect gas valve pipe unions.
d. Remove screws holding gas valve bracket to
stove.
e. Remove spudholder and manifold from left
side of valve and plug from right side of valve.
f. Remove gas valve from mounting bracket.
39. BURNER TUBE
Refer to Figure 2.
a. Remove control panel.
b. Close gas shut-off valve.
c. Disconnect union nut attaching nipple to
spudholder and remove spudholder.
d. Remove screws holding gas valve bracket to
stove assembly.
e. Remove screws holding burner tubes to stove
frame and remove burner tubes.
WARNING
To reduce risk of fire or explosion, check
pipe connections for gas leaks with a noncorrosive leak detection fluid. Do not use an
open flame to check for gas leaks!
W310
IMPORTANT: Make sure that spudholder and
orifices are positioned such that gas will be injected
directly down the center of the burners.
IMPORTANT: Purge air in the gas service line by
operating the tumbler in drying mode. Use pipe
compound resistant to action of Liquid Petroleum
(L.P.) Gas on all pipe threads.
36
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
SPARK
IGNITER
BURNER
TUBES
GAS VALVE
BRACKET
SPUD
HOLDER
GAS SHUTOFF
VALVE
(EU Models)
MANIFOLD
PIPE
GAS
VALVE
TMB1244P
GAS SHUTOFF
VALVE
(Non-EU Models)
MAIN
HARNESS
IGNITION RESET
SWITCH
(EU Gas Models
Only)
FUSE
(Non-EU Models)
IGNITION
CONTROL
HIGH VOLTAGE
LEAD
ICM RETURN
(Australian
Models)
CONTROL
HARNESS
TMB1256P
Figure 2
70269301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
37
Section 5 Service Procedures
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
40. CONTACTORS AND TERMINAL BLOCK
(Electric Models)
NOTE: Contactors and terminal blocks are located
in contactor box at the rear of the tumbler.
a. Remove screw holding cover to contactor box
and remove cover.
b. Remove wires from contactor terminals and
terminal blocks.
NOTE: Refer to wiring diagram when rewiring
contactors or terminal blocks.
c. Remove screws holding contactor to box.
d. Remove two screws holding terminal block to
box.
NOTE: Use a 3 pole terminal block.
41. HEATER ELEMENT
(Electric Models)
Refer to Figure 3.
a. Remove two screws holding hood to top of
cabinet and lift hood assembly off heater
housing.
b. Remove nuts, wires and jumper bars from
element terminals.
c. Remove four screws holding heater housing to
top of cabinet and remove heater from tumbler.
d. Turn heater housing upside down and remove
bottom guard retaining screws.
e. Remove two retaining screws from each of the
elements to be replaced.
NOTE: To remove top element, all elements must
be removed. To remove center element, both center
and bottom element must be removed.
f. Slide element forward until terminals clear rear
of heater housing.
g. Tilt element up and gently slide it out of
housing.
IMPORTANT: Bottom guard must be put back on
bottom of housing before reinstalling heater on
tumbler.
38
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
NON-EU MODELS
HEATER
HOUSING
JUMPER
BAR
HOOD
ASSEMBLY
HIGH LIMIT
THERMOSTAT
HEATER
ELEMENT
HEATER
CABLE
JUMPER
WIRE
TMB1249P
EU MODELS
HEATER CABLE
HARNESSES
JUMPER
BAR
HIGH LIMIT
THERMOSTAT
HEATER
ELEMENT
JUMPER
WIRE
TMB1248P
Figure 3
70269301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
39
Section 5 Service Procedures
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
42. STOVE HIGH LIMIT THERMOSTAT
(Gas Models)
a. Remove two screws holding thermostat and
bracket to rear side of stove. Refer to Figure 4.
b. Remove two screws holding cover to mounting
bracket. Refer to Figure 5.
c. Disconnect wires from thermostat.
d. Remove two screws holding thermostat to
mounting bracket. Refer to Figure 5.
JUNCTION
BOX
CONDUIT
NUT
SCREWS
STOVE
HIGH LIMIT
THERMOSTAT
T025SE1A
Figure 4
SCREWS
COVER
STOVE
HIGH LIMIT
THERMOSTAT
MOUNTING
BRACKET
SCREWS
TU026-SV
Figure 5
40
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
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
43. CABINET HIGH LIMIT THERMOSTAT
Refer to Figure 6.
a. Disconnect electrical service to tumbler.
b. Remove lint compartment door.
c. Remove two screws holding thermostat
mounting bracket to cylinder shroud.
d. Remove two screws holding cover to mounting
bracket.
e. Disconnect two wires from thermostat.
f. Remove two screws holding thermostat to
mounting bracket.
g. To remove thermostat wire assembly.
(1) Pull wires through bushing in thermostat
mounting bracket and then push wire out
through hole in back of lint compartment.
(2) Remove junction box cover from rear of
tumbler.
(3) Disconnect wires from inside of junction
box and pull wires from junction box.
NOTE: Refer to wiring diagram when reconnecting
thermostat wires.
CABINET
HIGH LIMIT
THERMOSTAT
THERMISTOR
CABINET
HIGH LIMIT
BRACKET
COVER
COVER
THERMISTOR
BRACKET
TMB1806B
Figure 6
70269301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
41
Section 5 Service Procedures
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
44. HIGH LIMIT THERMOSTAT
(Electric Models)
a. Unlock and open control panel.
b. Disconnect wires from thermostat.
c. Remove two screws holding thermostat to front
of heater and remove thermostat. Refer to
Figure 3.
NOTE: Refer to wiring diagram when rewiring
thermostat.
45. THERMISTOR
Refer to Figure 6.
a. Unlock and remove the lint panel.
b. Remove two screws holding the perforated
cover to the thermistor bracket.
c. Disconnect the wires from the back of the
thermistor.
d. Unscrew thermistor from bracket.
NOTE: Refer to the wiring diagram when
reconnecting the wires to the thermistor.
42
46. STEAM COILS
WARNING
Allow steam coils and valve to cool down
before attempting any service procedures.
W249
a. Shut off inlet and outlet valves and disconnect
flex hoses from steam coils.
b. Remove top cover pan.
c. Remove screws holding cover to top of steam
heating unit and remove cover.
d. Remove screws holding steam coils to coil
frame.
e. Remove steam coils by lifting straight up and
out of tumbler.
IMPORTANT: When removing or replacing steam
coils, be careful not to damage fins on steam coils.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
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
47. LOADING DOOR ASSEMBLY
Refer to Figure 7.
a. Open loading door.
b. Remove screw from lower hinge cam.
c. While supporting lower hinge cam, raise door
to clear setscrew located in cam.
d. Slide lower cam down and out of hinge lug.
e. Lift door assembly up and out of hinge lug.
UPPER
HINGE CAM
SCREW
48. DOOR HINGE
Refer to Figures 7 and 8.
a. Remove door assembly.
b. Remove nuts and screws holding hinge to door
frame.
DOOR
FRAME
NUT
HINGE
DOOR
FRAME
SCREW
DOOR
HANDLE
T301SE1B
DOOR
HANDLE
SCREW
DOOR
HINGE
LUG
LOWER
HINGE CAM
T252SE1C
Figure 7
70269301
Figure 8
49. LOADING DOOR HANDLE
Refer to Figure 8.
a. Open loading door.
b. Remove screws holding door handle to door
frame.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
43
Section 5 Service Procedures
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
50. FRONT PANEL
a. Remove control panel.
b. Unlock, open and remove lint panel. Set aside
to prevent damage.
c. Remove loading door assembly.
d. Support front panel and remove all screws
holding front panel to tumbler cabinet. Refer to
Figure 9.
e. Disconnect door switch harness.
SCREWS
SCREWS
SCREWS
TMB1553P
SCREWS
(4 Total)
Figure 9
44
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
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
51. AIRFLOW SWITCH
NOTE: The airflow switch is located on the lower
left of the rear panel for electric models, on the rear
plate of the stove for gas models.
a. Remove airflow switch box cover. Refer to
Figure 10.
b. Disconnect wires from switch. Refer to
Figure 11.
NOTE: Refer to wiring diagram when rewiring
airflow switch.
c. Remove screw(s) holding switch box to rear of
tumbler. Refer to Figure 11.
d. Remove two screws holding switch to
mounting bracket.
NOTE: After reinstalling airflow switch and
mounting bracket into switch box, adjust switch.
Refer to Adjustments section.
52. DRIVE GUARD
Refer to Figure 10.
a. Support drive guard and remove screws
holding guard to rear of tumbler.
b. Reinstall drive guard.
53. DRIVE BELT
Reversing Tumblers
Refer to Figure 25.
a. Remove drive guard.
b. Loosen cap screws attaching idler housing to
guide rails. Loosen jam nut on adjusting screw
above idler and turn adjusting screw out. Raise
idler housing and remove cylinder belts.
c. To remove drive belt after removing cylinder
belts:
(1) Remove two screws attaching reversing
motor belt guard to rear of cabinet and
remove guard.
(2) Lift idler assembly and run belt off from
idler sheave.
70269301
DRIVE
GUARD
ATTACHING
SCREWS
DRIVE
GUARD
AIRFLOW
SWITCH BOX
COVER
AIRFLOW
SWITCH
TMB1750S
Figure 10
(3) Remove upper portions of belt from motor
pulley, place it between the pulley and
cabinet then push belt down below the
pulley.
(4) Feed the belt over the cylinder pulley.
(5) Remove the lower bolt attaching the idler
rails.
(6) Pivot the bottom of the rails outward and
remove belt.
NOTE: When reinstalling belts, adjust cylinder
belts then adjust drive belt. Refer to Adjustments
section.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
45
Section 5 Service Procedures
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
MOUNTING
BRACKET
AIRFLOW
SWITCH
SWITCH
BOX
MOUNTING
SCREWS
SWITCH
LEVER
MOTOR
BRACKET
TU039-SV
BELT
GUARD
SCREWS
T037SE1A
Figure 11
Figure 12
54. DRIVE BELT
Nonreversing Tumblers
Refer to Figure 24.
a. Disconnect electrical service to tumbler.
b. Remove drive guard. Refer to Figure 10.
Remove two screws holding belt guard
assembly to motor bracket. Refer to Figure 12.
Remove belt guard.
c. Loosen cap screws on idler housing. Drop idler
housing to bottom of slots by loosening jam nut
by turning adjustment screw down.
d. Remove lower bolt and nut from guide rail.
Hinge guide rail out and slip belt out from
under guide rails.
e. Slip new belt under guide rail and onto sheave
and motor pulley.
46
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
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
55. IDLER SHAFT
Refer to Figure 13.
a. Remove idler housing assembly.
b. Remove sheave and drive pulley.
c. Remove cap screws holding idler housing to
guide rails.
d. Support idler housing assembly and carefully
drive idler shaft from housing using a hammer
and a hardwood dowel.
e. Support idler housing assembly and remove
bearings from housing using a hammer and a
hardwood dowel.
f. Reinstall shaft and bearings.
IMPORTANT: When installing new bearings, apply
a film of oil to the bearing cavity surfaces of the
housing and the outside diameter of the bearings.
IMPORTANT: If a press is not available to install
bearings, tap bearings into housing using a prylin
hammer.
g. Reinstall drive guard.
NOTE: After installing sheave, adjust belt.
IDLER
HOUSING
IDLER
SHAFT
BEARINGS
BOLT
IDLER
HOUSING
ASSEMBLY
TMB1530P
Figure 13
70269301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
47
Section 5 Service Procedures
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
56. TRUNNION HOUSING ASSEMBLY
a. Remove cylinder assembly.
b. Remove upper guide rail bolt and nut.
c. Remove four adjusting screws holding trunnion
housing assembly to rear of cabinet. Refer to
Figure 14.
d. Remove four bearing retainer screws holding
the small bearing in housing. Refer to
Figure 14.
e. Use a hammer and hardwood dowel to remove
bearings.
IMPORTANT: When installing new bearings, apply
a film of oil to the bearing cavity surfaces in the
housing and to the outside diameter of the bearings.
IMPORTANT: If a press is not available to install
bearings, tap bearings into housing.
MOUNTING
SCREW
(4 Total)
f. Reinstall drive guard on tumbler. Refer to
Figure 10.
ADJUSTING
SCREW
(2 Total)
BEARING
BEARING
RETAINER
SCREW
(4 Total)
TRUNNION
HOUSING
BEARING
TMB1540_P
Figure 14
48
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
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
57. TRUNNION SHAFT ASSEMBLY
Refer to Figure 15.
trunnion shaft and the outer rim of the cylinder at
the four points shown. If any measurement is lower
than the highest point, place shim or shims
(M401402) between trunnion channel and cylinder
back until the measurement is equal to the highest
point.
a. Remove cylinder assembly.
b. Remove the four washers and nuts holding
trunnion shaft assembly to rear of cylinder.
IMPORTANT: When installing trunnion assembly
on cylinder, the cylinder and shaft must be aligned.
Refer to Figure 15 for an example of how to check
for proper alignment of the shaft and cylinder.
Measure the distance between the center of the
NOTE: After installing cylinder and shaft, adjust
cylinder clearance. Refer to Adjustments section.
c. Reinstall drive guard on tumbler.
TRUNNION
ASSEMBLY
MEASURE AT
FOUR POINTS
TAPE
MEASURE
CYLINDER
T089SE3C
Figure 15
70269301
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49
Section 5 Service Procedures
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
58. MOTOR AND FAN ASSEMBLY
Nonreversing Models
a. Disconnect wires from motor as follows:
(1) Remove cover plate from rear of motor.
(2) Mark four wires and disconnect them from
motor terminals.
(3) Loosen clamp screws in box connector.
(4) While holding box, turn box connector out
of motor.
MOTOR
ATTACHING
BOLT
(Both sides)
CAP
SCREWS
NUT
AND
WASHER
NUT
AND
WASHER
NOTE: Refer to wiring diagram when rewiring
motor.
b. Remove upper belt.
c. Loosen nut on upper guide rail bolt. Refer to
Figure 24.
d. Loosen nut on idler housing attaching bolt and
lower idler housing to bottom of slots. This is to
put slack in drive belt, so it can be slipped off
the motor pulley without risk of damage.
e. Remove two screws holding drive guard to
motor bracket and remove belt guard. Refer to
Figure 12.
f. Remove nut and washer from lower guide rail
bolt. Refer to Figure 24.
NOTE: After removing belt, replace the lower guide
rail bolt. Refer to Figure 17.
g. Slip drive belt off motor pulley.
h. Remove the seven fan housing attaching
screws. Refer to Figure 16.
50
MOTOR
JUNCTION
BOX
PLATE
FAN HOUSING
ATTACHING
SCREWS
(7)
MOTOR
ATTACHING
BOLT
(Both sides)
TU044-SV
Figure 16
i. Remove the two cap screws and two sets of nuts
and washers holding motor bracket to rear of
tumbler cabinet. Refer to Figure 16.
j. Using the guide rails as supports, swing motor
and fan assembly out and away from rear of
tumbler. Refer to Figure 17.
k. While supporting motor and fan assembly,
remove the lower guide rail bolt. Refer to
Figure 24.
l. Remove four sets of nuts, washers and bolts
holding mounting bracket to motor. Refer to
Figure 16.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
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
m. Remove locknut and jam nut holding fan on
motor shaft. Refer to Figure 18. Pull fan off
motor shaft.
NOTE: Fan is keyed to motor shaft and may have to
be removed using a puller. Look for a spacer washer
at the bottom of the fan keyway. Take care to avoid
losing or damaging the spacer washer.
LOWER
GUIDE RAIL
BOLT
n. Remove spacer washer from motor shaft. Refer
to Figure 18.
o. Loosen two setscrews holding motor pulley to
motor shaft. Refer to Figure 18. Remove motor
pulley.
NOTE: A puller may be required to remove pulley
from motor shaft.
NOTE: After installing motor and fan assembly,
adjust belt.
MOTOR
AND FAN
ASSEMBLY
T045SE3A
Figure 17
70269301
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51
Section 5 Service Procedures
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
59. FAN AND MOTOR ASSEMBLY
Reversing Models
a. Disconnect wires from motor as follows:
(1) Remove cover plate from rear of motor.
(2) Mark four wires and disconnect them from
motor terminals.
(3) Loosen clamp screws in box connector.
(4) While holding box, turn box connector out
of motor.
e. Using the guide rails as supports, swing motor
and fan assembly out and away from rear of
tumbler. Refer to Figure 17.
f. While supporting motor and fan assembly,
remove the lower guide rail bolt. Refer to
Figure 24.
g. Remove four sets of nuts, washers and bolts
holding mounting bracket to motor. Refer to
Figure 16.
h. Remove locknut and jam nut holding fan on
motor shaft. Refer to Figure 18. Pull fan off
motor shaft.
NOTE: Refer to wiring diagram when rewiring
motor.
b. Remove nut and washer from lower guide rail
bolt. Refer to Figure 24.
c. Remove the seven fan housing cover attaching
screws. Refer to Figure 16.
d. Remove the two cap screws and two sets of nuts
and washers holding motor bracket to rear of
tumbler cabinet. Refer to Figure 16.
SPACER
WASHER
FAN HOUSING
COVER
NOTE: Fan is keyed to motor shaft and may have to
be removed using a puller. Look for a spacer washer
at the bottom of the fan keyway. Take care to avoid
losing or damaging the spacer washer.
i. Remove spacer washer from motor shaft. Refer
to Figure 18.
FAN
KEY
MOTOR
PULLEY
KEY
JAM NUT
MOTOR
PULLEY
FAN
LOCKNUT
T046SE3A
Figure 18
52
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 5 Service Procedures
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
60. CYLINDER DRIVE MOTOR
Reversing Tumblers
Refer to Figure 19.
a. Support drive guard and remove the screws
holding it to the back panel of the tumbler.
b. Loosen locking bolt and back adjusting screw
out to loosen belt. Refer to Figure 25.
c. Slip drive belt off of the motor pulley.
d. Disconnect the wire harness from motor.
e. Remove the four cap screws, nuts, lockwashers
and flat washers holding the motor to the
mounting bracket.
f. Loosen the setscrews in the motor pulley and
remove pulley by using a suitable puller.
NOTE: Refer to wiring diagram when rewiring the
motor.
g. After installing motor, adjust drive belt tension,
and adjust motor position on mounting bracket.
SCREW
LOCKWASHER
PULLEY
FLAT
WASHER
CYLINDER
DRIVE
MOTOR
MOUNTING
BRACKET
ADJUSTING
BOLT
TMB1689P
Figure 19
70269301
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53
Section 6
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
61. LEVELING LEGS
Refer to Figure 20.
NOTE: It is recommended that the front of the
tumbler be kept slightly higher than the rear
(approximately 1/8 inch, 3.0 mm). This will prevent
the clothes, while tumbling, from wearing on the
door glass gasket.
a. Check the front to rear level by rotating the
clothes cylinder until one of the cylinder ribs is
at the bottom. Place a level on the rib.
b. Check the side to side level by placing a level
on the front and rear of top panel.
NOTE: Keep the tumbler as close to the floor as
possible. All four legs must rest firmly on the floor
so weight of tumbler is evenly distributed. Tumbler
must not rock.
T451I
Figure 20
70269301
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55
Section 6 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
62. MAIN GAS BURNER AIR INLET
SHUTTERS
(All Gas Models)
Refer to Figure 21.
CAUTION
The air inlet shutters on the burner must be
adjusted so sufficient primary air is metered
into the system for proper combustion and
maximum efficiency. Before adjusting the
inlet shutter be sure that all lint is removed
from lint compartment and lint screen.
W281
Air inlet shutter adjustments will vary from
location to location and will depend on the vent
system, number of units installed, make-up air and
line gas pressure. Opening the shutter increases
the amount of air supplied to the burner while
closing the shutter decreases the air supply. Adjust
air shutter as follows:
a. Unlock and remove the access door.
b. Start the tumbler and check the flame pattern.
Correct air and gas mixture is indicated if the
flame pattern is primarily blue, with small
yellow tips, and bends to the right of the heater
section. Too little air is indicated if the flame is
yellow, lazy and smoky.
c. To adjust the air inlet shutter, loosen adjusting
screws.
d. Push or pull shutters in or out as necessary to
obtain desired flame intensity.
e. After shutter is adjusted, tighten locking screw
securely.
f. If the shutter is correctly adjusted, but the flame
pattern is straight up, insufficient air is flowing
through the tumbler and airflow switch is
improperly set. A flame pattern that flares to
the right and left indicates that no air is flowing
through the tumbler. Adjust airflow switch.
PROPER
AIRFLOW
INSUFFICIENT
AIRFLOW
NO AIRFLOW
AIR SHUTTER
ADJUSTING SCREWS
AIR SHUTTER
ADJUSTING SCREWS
AIR SHUTTER
ADJUSTING SCREWS
TMB1780S
Figure 21
56
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 6 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
63. AIRFLOW SWITCH
Gas and Electric Tumblers
Refer to Figure 22.
The airflow switch operation is controlled by the
counterweight position on the shaft. Moving the
counterweight either increases or decreases airflow
switch sensitivity. The counterweight should be
adjusted so the disc moves away from the cabinet when
the lint panel is opened 1-1/2 in. (38.1 mm) with a full
load. Adjust the airflow switch as follows:
WARNING
To reduce the risk of fire, airflow switch
operation may be affected by a clogged lint
screen, lack of make-up air, obstructions at
the thimble or in the customer installed
main or collector ducts. These conditions
must be checked and necessary corrections
made before adjusting airflow switch.
Always adjust airflow at installation.
W474
The airflow switch (located on the rear of tumbler,
Figure 22, is set at the factory for proper operation.
However, if there is a problem with the switch, it should
be adjusted as follows:
NOTE: Steam models do not have an airflow
switch.
NOTE: Control panel must be in place and access
door closed before attempting to adjust airflow
switch.
IMPORTANT: Airflow switch disc must remain
closed during operation. If it opens and closes
during the drying cycle, this indicates insufficient
airflow through the tumbler. If switch remains
open, or pops open and closed during the cycle, the
heating system will shut off. The cylinder and fan
will continue to operate even though the airflow
switch is opened.
70269301
a. Load the tumbler. This adjustment is much
faster to make with one person opening lint
panel in front and another adjusting the
counterweight in the rear of tumbler.
b. Temporarily tape down the lint panel safety
switch located behind the upper right corner of
the lint panel.
c. Start the tumbler. Open the lint panel 1-1/2 in.
(38.1 mm). The airflow disc should move away
from the cabinet, opening the switch contacts
and shutting off the heat system. This indicates
proper operation and proper adjustment.
d. If switch is not opening as described in step 3,
it should be adjusted so it is MORE sensitive.
Depress the spring clip and move
counterweight toward disc. Retest by opening
lint panel and continue moving counterweight
toward disc until switch operates as described
in Step c.
e. If switch opens BEFORE lint panel is opened
the proper distance, step 3, it should be adjusted
so it is LESS sensitive. Depress the spring clip
and move counterweight away from the disc.
Retest by opening lint panel and continue
moving counterweight away from disc until
switch operates as described in Step c.
IMPORTANT: Remove tape from lint panel switch.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
57
Section 6 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
MOUNTING
BRACKET
SWITCH
ADJUSTING
SCREWS
REAR
PANEL OF
TUMBLER
AIR FLOW
SWITCH
SCREW
SWITCH
LEVER
DISC
AIR FLOW
SWITCH
VANE
LEVER
ARM
SWITCH
LEVER
SPRING
CLIP
COUNTERWEIGHT
DISC
COUNTERWEIGHT
SPRING
CLIP
T041IE3A
Figure 22
58
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
70269301
Section 6 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
64. LOADING DOOR STRIKE
Refer to Figure 23.
The door strike must be adjusted so it has
sufficient tension to hold loading door closed
against the force of a tumbling load. The door
strike is properly adjusted when 8-15 lbs. (17.6-33
kg) of pull is required to open door.
To adjust, open door, loosen acorn nut and turn
door strike screw in or out as required. Retighten
acorn nut.
Reversing Belt Drive Models: Proper tension is
when each cylinder belt can be depressed
approximately 3/16 inch (4.77 mm) by applying
light thumb pressure (approximately 5 pounds) at
a point midway between the sheave and the idler.
Nonreversing Models:
Refer to Figure 24.
a. Remove guard from rear of tumbler.
b. Loosen idler housing capscrews holding idler
housing to the housing support.
c. Position housing assembly by turning adjusting
bolt until proper belt tension is reached, then
retighten idler housing capscrews.
d. Replace guard on rear of tumbler.
DOOR
STRIKE
ACORN
NUT
DOOR
LATCH
T048IE1A
Figure 23
70269301
65. DRIVE BELT TENSION
Proper tension is when drive belt can be depressed
1/2 inch (12.7 mm) by applying light thumb
pressure (approximately 5 pounds) at a point
midway between sheave and motor pulley.
Reversing Models:
Refer to Figure 25.
a. Remove guard from rear of tumbler.
b. To adjust cylinder belt tension, loosen idler
housing bolts holding idler housing assembly to
the housing support.
c. Position housing assembly by turning adjusting
bolt until proper belt tension is reached, then
retighten idler housing bolts.
NOTE: Adjust cylinder belt tension first, then
adjust motor to idler belt tension. Refer to
Figure 25.
d. Loosen the locking bolt.
e. Loosen the adjusting nut and use the adjusting
screw to move the motor up or down.
f. Once proper belt tension is reached, retighten
the adjusting nut and locking bolt.
g. Replace the guard on rear of tumbler.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
59
Section 6 Adjustments
NONREVERSING
TRUNNION HOUSING
ADJUSTING BOLTS
POLY
V-BELT
(Self-adjusting)
TRUNNION
HOUSING
BOLTS
IDLER
HOUSING
BOLTS
(2)
ADJUSTING
BOLT
IDLER
HOUSING
ASSEMBLY
DRIVE
V-BELT
GUIDE
RAILS
T234IE3F
Figure 24
60
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70269301
Section 6 Adjustments
REVERSING
LOCKING
BOLT
DRIVE
BELT
ADJUSTING
NUT
ADJUSTING
BOLT
(Not Shown)
ADJUSTING
SCREW
CYLINDER
BELTS
IDLER
HOUSING
BOLTS
(2)
IDLER
HOUSING
ASSEMBLY
T322IE3A
Figure 25
70269301
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61
Section 6 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
66. 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.
a. Open loading door and check the gap between
the center of the front panel top flange and the
cylinder rim. Proper adjustment is when the gap
is 1/2 - 3/4 inch (12.7 - 19.05 mm). Refer to
Figure 26.
b. Remove drive guard.
c. Loosen the four trunnion housing bolts. Refer
to Figure 24.
d. Loosen the locknuts on the trunnion housing
adjusting bolts. Refer to Figure 24.
e. Turn the adjusting bolts in or out as necessary
to obtain proper clearance between cylinder rim
and front panel.
NOTE: Turning the adjusting bolts clockwise will
raise the cylinder and turning them counterclockwise will lower the cylinder. Turn both bolts
evenly to adjust top and bottom clearance. Turn
one or the other adjusting bolt in or out to adjust
side clearance.
f. After the cylinder is properly adjusted, tighten
the adjusting bolt locknuts and the four
trunnion housing bolts.
g. Install the belt guard removed in Step b.
NOTE: If adjusting the trunnion housing fails to
correct the clearance, the problem is probably due
to a worn trunnion shaft or bearings.
INSIDE
FRONT OF
CYLINDER
CYLINDER
RIM
1/2 - 3/4 Inch
(12.7 - 19.05 mm)
9/32" ± 1/32"
CYLINDER RIM /
FRONT PANEL
FLANGE
CLEARANCE
FORE / AFT
CLEARANCE
T218SE3C
FRONT
PANEL
FRONT
PANEL FLANGE
(Top Shown)
Figure 26
62
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