American Dryer Corp. ADG-320D Manual

ADG-320D and ADG-330D
24 VAC Phase 5
Dual Microprocessor Controller (DMC)
Mechanical/Electrical
Service Procedures
AmericanDryerCorporation
88Currant Road
FallRiver,MA02720-4781
Telephone: [phone] / Fax: [phone]
e-mail:[e-mail]
www.amdry.com
062094 ADCPartNo.450303

Retain This Manual In ASafe Place For Future Reference
American Dryer Corporation products embody advanced concepts in engineering, design, and safety. If this product is
properly maintained, it will provide many years of safe, efficient, and trouble free operation.
ONLY qualified technicians should service this equipment.
OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation manual included with
the dryer.
The following “FOR YOUR SAFETY” caution must be posted near the dryer in a prominent location.
We have tried to make this manual as complete as possible and hope you will find it useful. ADC reserves the right to make
changes from time to time, without notice or obligation, in prices, specifications, colors, and material, and to change or
discontinue models.
Important
For your convenience, log the following information:
DATE OFPURCHASE ____________________________ MODELNO. __________________________________________
RESELLER’SNAME _______________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADCfactory. When orderingreplacement partsfromthe factory,
you can FAX your order to ADC at [phone] or telephone your order directly to the ADC Parts Department at (508)
678-9000. Pleasespecifythedryermodelnumberandserialnumberin additionto thedescriptionand partnumber, sothat
your order is processed accurately and promptly.
The illustrations on the following pages may not depict your particular dryer exactly. The illustrations are a composite of the
various dryer models. Be sure to check the descriptions of the parts thoroughly before ordering.
“IMPORTANTNOTETO PURCHASER”
Informationmustbeobtainedfromyourlocalgassupplierontheinstructions
tobefollowedifthe user smells gas. Theseinstructionsmustbeposted in a
prominentlocationnearthedryer.
FORYOUR SAFETY
Donot store or use gasolineor
otherflammablevaporsand
liquidsinthevicinityofthisor
anyotherappliance.
POURVOTRESÉCURITÉ
Nepasentreposer ni utiliser d’essence
nid’autresvapeursouliquides
inflammablesàproximitédecet
appareiloude tout autreappareil.

IMPORTANT
YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC
SUPPLY AND THE GAS SUPPLY OR THE STEAM SUPPLY BEFORE ANY
COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO
ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, OR
TESTING OF ANY EQUIPMENT PER OSHA (Occupational Safety and Health
Administration) STANDARDS.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER
APPLIANCE.
FORYOUR SAFETY
DO NOT DRY MOP HEADS IN THE DRYER.
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.
CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR
THE DRYERS.
WARNING
CHILDREN SHOULD BE SUPERVISED IF NEAR DRYER(S) IN
OPERATION.
DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN
OPERATION.
CAUTION
WARNING
The dryer must never be operated with any of the back guards, outer tops,
or service panels removed. PERSONAL INJURY OR FIRE COULD
RESULT.

IMPORTANT
PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the
equipment and specified in the installation manual included with the dryer.
WARNING
DRYER MUST NEVER BE OPERATED WITHOUT THE LINT
FILTER OR SCREEN IN PLACE, EVEN IF AN EXTERNAL LINT
COLLECTION SYSTEM IS USED.
The wiring diagram for the dryer is located in the front electrical control box area.

Table of Contents
SECTION I
ROUTINE MAINTENANCE .................................................................................... 3
A. Cleaning ..................................................................................................................................... 3
B. Adjustments ............................................................................................................................... 4
C. Lubrication ................................................................................................................................. 4
SECTION II
MECHANICAL ...........................................................................................................5
A. To Remove Lint Drawer ............................................................................................................. 5
B. To Remove Control (Middle)orLint(Lower) Door .................................................................... 5
C. ToRemoveGasValveTrainAssembly ........................................................................................ 5
D. To Remove ControlBox ............................................................................................................. 6
E. To Remove Front Panel .............................................................................................................. 6
F. To Remove/ReplaceLintDrawerSwitchAssembly ..................................................................... 7
G. ToRemove/ReplaceSensor Bracket and/orItsComponents ....................................................... 7
H. ToRemove/ReplaceBelt ............................................................................................................ 8
I. ToRemove/ReplaceMotor......................................................................................................... 9
J. ToRemove/ReplaceImpellor(Fan/Blower)............................................................................... 11
K. Belt/IdlerTensionAdjustment.................................................................................................... 12
L. ToRemoveDualMicroprocessorController(DMC) Computer PanelAssembly........................ 13
M. To Replace DMCComputer..................................................................................................... 13
N. ToReplace Keyboard (Touch Pad)........................................................................................... 14
O. To Replace CoinAcceptor........................................................................................................ 15
P. To ReplaceEitherMotorRelay ................................................................................................. 15
Q. Basket(Tumbler)Alignment(Vertical) ....................................................................................... 16
R. Basket(Tumbler)Alignment(Lateral) ........................................................................................ 16
S. ToReplaceBasket (Tumbler)and/orBasket(Tumbler)Support ................................................ 18
T. To Replace Basket (Tumbler)SupportPillowBlockBearing...................................................... 19
U. To Replace Basket (Tumbler)SupportFlangeBearing ............................................................... 19
V. ToReplace330º(Burner)Hi-LimitSwitch(Thermostat)............................................................ 21
W. ToReplaceSailSwitch ............................................................................................................. 21
X. ToReplace MainDoorSwitch .................................................................................................. 22
Y. To ReplaceDirectSparkIgnition(DSI)Module ........................................................................ 22
Z. ToReplaceIgnitor/ProbeAssembly .......................................................................................... 23
AA. To Replace GasValve............................................................................................................ 23
BB. To ConvertDryer FromNaturalGas toLiquidPropane (L.P.) Gas ......................................... 24
CC. To Replace CoinVault ........................................................................................................... 25
DD. ToRemoveMain Door .......................................................................................................... 25
EE. To InstallNewMainDoorGlass ............................................................................................ 26
FF. To ReplaceMain DoorGasket .............................................................................................. 26
GG. To Replace Main DoorHinge ................................................................................................ 26

SECTION III
TROUBLESHOOTING ...........................................................................................28
SECTION IV
ELECTRICAL TROUBLESHOOTING................................................................36
SECTION V
DATA LABEL INFORMATION .............................................................................41
A. DataLabel ............................................................................................................................... 41
B. TestingandAdjustingGasPressure ........................................................................................... 43
C. L.E.D.Display Codes............................................................................................................... 44
SECTION VI
PHASE 5 DUAL MICROPROCESSOR CONTROLLER (DMC) SYSTEM
DIAGNOSTICS.........................................................................................................45
A. Diagnostic(L.E.D.Display)FailureCodes ................................................................................ 45
B. L.E.D.DisplayIndicators(Dots) ............................................................................................... 46
C. Phase5 DMC ComputerRelay Output L.E.D.Indicators.......................................................... 46
D. Phase 5 DMCComputerInput/Output L.E.D. Indicators .......................................................... 47
SECTION VII
PHASE 5 DUAL MICROPROCESSOR CONTROLLER (DMC)
PROGRAMMING LIMITS.....................................................................................48

3
SECTIONI
ROUTINEMAINTENANCE
A. CLEANING
A program and/or schedule should be established for periodic inspection, cleaning, and removal of lint from
various areas of the dryer, as well as throughout the ductwork system. The frequency of cleaning can best be
determined from experience at each location. Maximum operating efficiency is dependent upon proper air
circulation. The accumulation of lint can restrict this airflow. If the guidelines in this section are met, an ADC
dryer will provide many years of efficient, trouble free and most importantly safe operation.
WARNING: LINTFROMMOSTFABRICS ISHIGHLYCOMBUSTIBLE. THE
ACCUMULATION OFLINTCAN CREATEAPOTENTIALFIREHAZARD.
WARNING: KEEPDRYERAREACLEARANDFREEFROM COMBUSTIBLE
MATERIALS,GASOLINE,ANDOTHERFLAMMABLEVAPORSAND
LIQUIDS.
NOTE: Suggestedtimeintervalsshownareforaverageusage, which is considered six (6)to eight(8)
operational(running) hoursperday.
DAILY(beginning of each work shift)
Clean lint from baskets (tumblers).
Inspect lint screen(s) and drawer(s) for damage and replace if torn.
WEEKLY
Clean lint accumulation from around microprocessor temperature sensor probes and sensor bracket assemblies.
90 DAYS
Remove lint from air vents and surrounding area.
IMPORTANT: Lintaccumulationwillrestricttheairflowoverthemotor(s),causingoverheatingand
irreparablemotor damage. Motor failure duetolintaccumulationwillVOIDTHE
WARRANTY.

4
Remove lint accumulation from around the openings in the dryer’s back panels.
Remove lint from gas valve burner train area with a dusting brush or vacuum cleaner attachment.
Remove any lint accumulation from coin acceptor area, including the optical switch.
Inspect and remove lint accumulation in customer furnished exhaust ductwork system and from the dryer’s
internal exhaust ducting.
WARNING: THEACCUMULATIONOFLINTINTHEEXHAUSTDUCTWORKCAN
CREATEAPOTENTIALFIREHAZARD.
Clean the steam coil fins (or filters). We suggest using compressed air and a vacuum cleaner with brush
attachment.
NOTE: Whencleaningsteamcoilfins,be careful not to bend the fins. If finsare bent, straightenby
usingafincomb,whichisavailablefromlocalairconditioningsupplyhouses.
6 MONTHS
In the cleaning of the dryer’s cabinet, avoid using harsh abrasives. A product for the cleaning of appliances is
recommended.
ALL bearings and setscrews should be checked to insure that they are tight.
B. ADJUSTMENTS
7 DAYS AFTER INSTALLATION AND EVERY 6 MONTHS THEREAFTER
Inspect bolts, nuts, screws (bearing setscrews), grounding connections, nonpermanent gas connections, (unions,
shutoff valves, and orifices) and electrical terminations. The 12-Rib 95” (J) poly belt arrangement should be
examined. Acracked or seriously frayed belt(s) should be replaced. Tighten loose belt(s) when necessary and
check the alignment. Complete operational check of controls and valves. Complete operational check of ALL
safety devices (door switches, lint compartment switches, sail switches, and burner and hi-limit thermostats).
C. LUBRICATION
The motor bearings, idler bearings, and basket (tumbler) bearings are permanently lubricated. No lubrication is
necessary.

5
SECTIONII
MECHANICAL
A. TO REMOVE LINT DRAWER
1. Pull out lint drawer 3/4’s of the way (approximately 20 inches [50.8 cm]).
2. Reach up into the back of the lint drawer and pull down the retainer (hinge) that is attached to the top of the
lint drawer.
3. The lint drawer can now be removed.
4. Reverse procedure for reinstalling the lint drawer.
B. TO REMOVE CONTROL (MIDDLE) OR LINT (LOWER) DOOR
1. Pull out lint drawer 3/4’s of the way (approximately 20-inches [50.8 cm]). Reach into the back of the lint
drawer and push down the retainer (hinge) that is attached to the top of the lint drawer.
2. Pull out the lint drawer.
3. Open the control/lint door; two (2) 1/4 turn locks, one (1) on each side.
4. Remove the control/lint door.
5. Reverse procedure to reinstall the control/lint door.
C. TO REMOVE GAS VALVE TRAIN ASSEMBLY
1. Discontinue power to the dryer.
2. Close ALL gas shutoff valves in the gas supply line to the dryer.
3. Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint
Door Removal Procedures in Section Aand Section B).
4. Close the union shutoff valve at inlet area of the gas valve.
5. Loosen the union shutoff valve collar nut ALL the way.
6. Pull out gas valve train assembly 1/4 of the way. Disconnect the gas valve harness power connector at the
top of the assembly.
7. Gently pull/remove the gas valve train assembly.

6
IMPORTANT: Whenremovingthegasvalvetrain assembly, becareful nottosnagordamagethegas
valvetrain wiring disconnected inStep#6.
8. Reverse procedure to reinstall the gas valve train assembly.
NOTE: BesuretoopenALLgasshutoffvalves closed prior to removingthe gasvalve trainassembly.
9. Reestablish power to the dryer.
D. TO REMOVE CONTROL BOX
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door
Removal Procedures in Section Aand Section B).
3. Remove screw located on the bottom right hand corner of the control panel.
4. Slide out the control box and hang the control box assembly on hinges located on the right side panel, and
disconnect the three (3) wiring harnesses (connectors) at the back of the control box.
5. The control box may now be taken out of the dryer completely. Depending on the service function to be
performed, the control box can be attached to the two (2) female hinges on the right side of the dryer
cabinet.
NOTE: Ifthecontrolbox is attached tothedryercabinet,the three (3) wiringharnessesmentionedin
Step #4 DO NOT need to be disconnected.
6. Reverse procedure to reinstall the control box assembly.
7. Reestablish power to the dryer.
E. TO REMOVE FRONT PANEL
1. Discontinue power to the dryer.
2. Remove the control box assembly (follow Control Box Removal Procedure in Section D).
3. If the bottom front panel is being removed, the lower lint door must also be removed.
4. Disconnect the door switch connector from the lint drawer switch box assembly located under the basket
(tumbler) on the right side.
NOTE: Thereare two (2)harnesses that connectto lint drawerswitch box. Locateanddisconnect the
onethatleads to thefront panel.

7
5. Pull up the two (2) metal fingers where the door switch harness is secured to the frame and right side panel
of the dryer.
6. Remove ALL nine (9) screws from the front panel. There are four (4) on the left side, four (4) on the right
side, and one (1) at the bottom of the panel behind the control door.
7. Gently remove the front panel assembly from dryer.
8 Reverse procedure to reinstall the front panel assembly.
9. Reestablish power to the dryer.
F. TO REMOVE/REPLACE LINT DRAWER SWITCH ASSEMBLY
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint
Door Removal Procedures in Section Aand Section B).
3. If the top basket (tumbler) is being serviced, remove the control box assembly (follow Control Box
Removal Procedure in Section D).
4. To remove the lint drawer switch box assembly, remove the two (2) screws inside the lint drawer area that
secure box to the side of the lint coop.
5. Disassemble the lint drawer box assembly from the dryer by disconnecting the two (2) harness connectors
from the box assembly.
6. Remove the two (2) Phillips head screws securing the cover to the switch mounting bracket.
7. Disassemble the switch from the box by removing the two (2) slotted head screws securing switch to the
bracket and disconnect the terminals from the switch.
8. Reverse procedure to reinstall the lint drawer switch assembly.
9. Reestablish power to the dryer.
G. TO REMOVE/REPLACE SENSOR BRACKET AND/OR ITS COMPONENTS
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint
Door Removal Procedures in Section Aand Section B).
3. Pull the front of the sensor bracket forward to remove it from the “S” clips. Pivot bracket downward and
assembly will separate from the sensor bracket holder.

8
4. To disassemble bracket assembly from dryer, disconnect the two (2) harness connectors.
5. To remove the temperature sensor and the connecting harness with its connectors:
a. Disassemble microprocessor sensor probe from the bracket by removing the 1/4” push on fastener
from the outside of the bracket.
b. Remove harness connectors by squeezing sides and pushing towards the center of the bracket.
c. Disconnect the two (2) wires from the 170º thermostat.
d. Reverse procedure to install new sensor probe assembly.
6. To replace the 170º thermostat:
a. Remove the two (2) slotted head screws, washers, and nuts securing the 170º thermostat to bracket
assembly.
b. Reverse procedure to install new 170º thermostat.
7. Reverse procedure for reinstalling the sensor bracket.
IMPORTANT: Whenreinstallingthesensorbracketassemblytothe dryer, be sure the internalwires
DONOT getpinched between the sensor bracket and theholder.
8. Reestablish power to the dryer.
H. TO REMOVE/REPLACE BELT
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint
Door Removal Procedures in Section Aand Section B).
3. If the top basket (tumbler) is being serviced, remove the control box assembly and belt guard from idler arm
(follow Control Box Removal Procedure in Section D).
4. Remove front panel from basket (tumbler) being serviced (follow Front Panel Removal Procedure in
Section E).
5. Loosen the tension on the idler arm adjusting spring by loosening the two (2) 9/16” nuts on the spade bolt.
6. Remove the front motor bushing from the motor shaft by the Phillips head screw. (NOTE: This screw has
left hand thread.)
7. Slide belt off the idler bracket and motor shaft.
8. Push belt up into basket (tumbler) area through the brushes and opening in the wrapper.
9. Remove the belt by maneuvering it back and forth and sliding it forward with your hands up through the lint
drawer area.

9
10. The belt will come out from the front of the dryer between the basket (tumbler) and the wrapper.
11. Reverse procedure to install new belt.
IMPORTANT: Besure to setthe proper belttension at idleradjustment (follow Belt/IdlerTension
AdjustmentProcedureinSectionK).
12. Reestablish power to the dryer.
I. TO REMOVE/REPLACE MOTOR
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint
Door Removal Procedures in Section Aand Section B).
3. If top basket (tumbler) is being serviced, remove the control box from the dryer (follow Control Box
Removal Procedure in Section D).
4. Remove the two (2) 9/16” OD nuts that are on the idler tension spade bolt.
5. Remove the belt from the idler bracket and the motor shaft.
6. Remove the idler bracket; one (1) 1/2” OD bolt in the front and two (2) 1/2” OD bolts on the right side of
the bracket.
7. Loosen the four (4) 1/2” OD nuts that hold the motor to the motor mount. These nuts are at the underside
of the motor mount assembly.
IMPORTANT: DONOT remove these four (4) bolts.
8. Remove the lower half of the rear split back guard panel to either the top or the bottom basket (tumbler),
depending on which basket (tumbler) is being serviced.
9. Remove the four (4) 7/16” OD nuts, which secure the impellor (fan/blower) cover to the blower housing.
10. Remove the two (2) 7/16” OD nuts and lock washers, which secure the impellor (fan/blower)/shaft bearing
to the impellor (fan/blower) housing cover.
11. Loosen the two (2) setscrews on the impellor (fan/blower)/shaft bearing.
12. Remove the impellor (fan/blower)/shaft bearing from the shaft. To do so, wedge a slotted screwdriver
blade between the bearing and impellor (fan/blower) cover and walk bearing back off shaft. The impellor
(fan/blower) cover will now separate from the impellor (fan/blower) housing.
13. Remove impellor (fan/blower) lock nut (right hand) and lock washer securing impellor (fan/blower) to
motor shaft. This can be done by turning the lock nut to the left with an adjustable wrench, or more
advisable, with a 1-1/8” deep socket ratchet wrench in an effort to avoid damaging the lock nut.

10
14. Align impellor (fan/blower) to the center of the blower housing hole and remove impellor (fan/blower) by
grasping fan with both hands and pulling outward. The key will also come off of the motor shaft in this
procedure.
15. Return to the front of the dryer and disconnect the wiring harness from the motor.
16. Disassemble the motor from the motor mount by removing the four (4) 1/2” OD nuts (loosened in Step #7)
securing the motor to the motor mount. Remove the motor through the front of the dryer. Reverse this
procedure for installing the new motor.
17. Reconnect the wiring harness disconnected from the motor in Step #15.
18. Insert key into the motor shaft removed in Step #14, line up keyway in impellor (fan/blower) with the key
in the shaft and slide impellor (fan/blower) ALL the way onto shaft.
19. Reinstall the lock washer and lock nut (right hand) removed in Step #13 and tighten securely.
20. Reassemble the impellor (fan/blower)/shaft bearing to the impellor (fan/blower) cover and secure (hand
tighten only) with the two (2) lock washers and nuts removed in Step #10. Install the housing cover and
bearing assembly onto the shaft and housing. Secure with the four (4) nuts removed in Step #9. Secure the
two (2) setscrews on the impellor (fan/blower)/shaft bearing. Be sure that these setscrews are securely in
place.
21. The impellor (fan/blower) must now be adjusted/centered in the blower housing. Align the center of the
motor shaft at impellor (fan/blower) shaft bearing, so that the center of the motor shaft is exactly 8-inches
(20.32 cm) from the left side panel.
a. Once the impellor (fan/blower) is properly centered, tighten the two (2) nuts of the impellor
(fan/blower)/shaft bearing that were hand tightened in Step #20.
IMPORTANT: Failureto havetheimpellor(fan/blower)properlyalignedcanresultintheimpellor
(fan/blower)beingdamaged.
22. Reinstall the lower half of the rear split back guard panel removed in Step #8.
23. The motor must now be aligned and secured in place. To do so, position the motor so that there is exactly
8-inches (20.32 cm) from the center of the motor shaft bushing (Phillips head screw securing the bushing
to motor shaft) to the right side panel and tighten the four (4) nuts (loosened in Step #7), which secures the
motor to the motor mount.
24. Reassemble idler bracket and hardware removed in Step #6. Assemble the two (2) 9/16” OD nuts onto the
idler tension spade bolt removed in Step #4. DO NOT tighten these two (2) 9/16” nuts at this time.
25. Reconnect drive belt and then make necessary belt tension adjustment (follow Belt/Idler Tension
Adjustment Procedure in Section K).
26. Reverse Step #1 through Step #3.

11
J. TO REMOVE/REPLACE IMPELLOR (FAN/BLOWER)
1. Discontinue power to the dryer.
2. Remove the lint drawer, the control/lint door, and the control box from the dryer (follow Control Box
Removal Procedure in Section D).
NOTE: Iflower basket (tumbler)is being serviced,the control boxdoesnothave tobe removed.
3. Loosen, (DO NOT remove) the four (4) 1/2” OD nuts that hold the motor to the motor mount. These nuts
are at the underside of the motor mount assembly.
4. Remove the lower half of the rear split back guard panel to either the top or the bottom basket (tumbler),
depending on which basket (tumbler) is being serviced.
5. Remove the four (4) 7/16” OD nuts, which secure the impellor (fan/blower) housing cover to the blower
housing.
6. Remove the two (2) 7/16” OD nuts and lock washers, which secure the impellor (fan/blower)/shaft bearing
to the impellor (fan/blower) housing.
7. Loosen the two (2) setscrews on the impellor (fan/blower)/shaft bearing.
8. Remove the impellor (fan/blower)/shaft bearing from the shaft. To do so, wedge a slotted screwdriver
blade between the bearing impellor (fan/blower) cover and walk bearing back off the shaft. The impellor
(fan/blower) cover will also now separate from impellor (fan/blower) housing.
9. Remove impellor (fan/blower) lock nut (right hand) and lock washer securing the impellor (fan/blower) to
the motor shaft. This can be done by turning the lock nut to the left with an adjustable wrench, or more
advisable, with a 1-1/8” deep socket ratchet wrench in an effort to avoid damaging the lock nut.
10. Align impellor (fan/blower) to the center of the impellor (fan/blower) housing hole and remove impellor
(fan /blower) by grasping fan with both hands and pulling outward. The key will also come off motor shaft
in the procedure.
11. To install the impellor (fan/blower):
Insert key into motor shaft removed in Step #10. Line up keyway in impellor (fan/blower) with key in the
shaft and slide impellor (fan/blower) ALL the way onto shaft.
12. Reinstall the lock washer and lock nut removed in Step #9 and tighten securely.
13. Reassemble the impellor (fan/blower)/shaft bearing to the impellor (fan/blower) cover and secure (hand
tighten only) with the two (2) lock washers and nuts removed in Step #6. Install the housing cover and
bearing assembly onto the shaft and housing. Secure with the four (4) nuts removed in Step #5. Secure the
two (2) setscrews on the impellor (fan/blower)/shaft bearing. Be sure that these setscrews are securely in
place.

12
14. The impellor (fan/blower) must now be adjusted/centered in the blower housing. Align the center of the
motor shaft (at impellor [fan/blower]/shaft bearing), so that the center of the motor shaft is exactly 8-
inches (20.32 cm) from the left side panel.
a. Once the impellor (fan/blower) is properly centered, tighten the two (2) nuts of the impellor
(fan/blower)/shaft bearing that were hand tightened in Step #13.
IMPORTANT: Failureto havetheimpellor(fan/blower)properlyalignedcanresultintheimpellor
(fan/blower)beingdamaged.
15. Reinstall the lower half of the rear split back guard panel removed in Step #4.
16. The motor must now be realigned and secured in place. To do so, position the motor so that it is exactly
8-inches (20.32 cm) from the center of the motor shaft to the right side panel. Tighten the four (4) nuts
which secure motor to the motor mount loosened in Step #3.
17. Make the necessary belt/idler tension adjustment (follow Belt/Idler Tension Adjustment Procedure in
Section K).
18. Reverse Step #1 and Step #2.
K. BELT/IDLER TENSION ADJUSTMENT
1. Discontinue power to the dryer.
2. Remove the lint drawer, the control/lint door, and the control box assembly from the dryer (follow Control
Box Removal Procedure in Section D).
NOTE: Iflower basket (tumbler)is being serviced,the control boxdoesnot haveto be removed.
3. To adjust tension, while holding spade tension bolt in place (i.e., with channel lock pliers), loosen the 9/16”
OD locking nut. To increase tension, tighten the inner 9/16” OD nut; to decrease tension, loosen the inner
nut.
NOTE: Approximateproper belt tension- when thereis a 1-inch(2.54 cm) spacebetween the idler
adjustmentbracketand the first threadonthe right handsideof the spade tensionbolt.
4. Once proper adjustment is achieved, secure the 9/16” locking nut.
5. Reverse Step #1 and Step #2.

13
L. TO REMOVE DUAL MICROPROCESSOR CONTROLLER (DMC)
COMPUTER PANEL ASSEMBLY
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door
Removal Procedures in Section Aand Section B).
3. Remove screw in the lower right hand corner of the control panel, securing the panel to the control box.
4. Open the control panel and disconnect ALL the harnesses (the two [2] 9-pin wire harness connectors and
the 4-pin connector wiring harness) that are connected to the DMC computer.
5. To remove the control panel assembly from the control box, gently tap the bottom edge of the control panel
while lifting panel upward off hinges.
6. Reverse procedure to reinstall the control panel assembly.
7. Reestablish power to the dryer.
M. TO REPLACE DMC COMPUTER
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door
Removal Procedures in Section Aand Section B).
3. Remove screw in the lower right hand corner of the control panel, securing panel to control box.
4. Open control panel and disconnect ALL the harnesses (the two [2] 9-pin wire harness connectors, the
3-pin connector wiring harness coming from coin acceptor optic switch[es], and the one [1] 4-pin power
wire harness connector) that are connected to the DMC computer.
NOTE: Theseconnectorscanbe removed fromtheDMCcomputer by squeezingthesidetabs while
pullingtheconnectoroutward.
5. Depending on the service function to be performed, the control panel assembly can be left on the control
box or removed entirely from the dryer. To remove the control panel, follow Control Panel Removal
Procedure in Section L, Step #5.
6. Disconnect the keyboard (touch pad) ribbon connector by holding onto the blue ribbon connector and
pullingoutward.
7. Remove the two (2) screws securing the DMC computer to the metal control panel and gently disassemble
the DMC computer from the panel.
8. Install the new DMC computer by reversing the procedure in Step #7.

14
IMPORTANT: WheninstallingthenewDualMicroprocessorController(DMC)computer,makesure
thatthe transformer ontheDMC computerislocated at thebottom area ofthe control
panel.
9. Reverse Step #1 through Step #6.
NOTE: Whenreconnectingtheopticswitchharnessconnectorforsinglecoinacceptormodels,
connectthe harness to the lowerof the two(2) connectorson the DMCcomputer.
NOTE: Formodelswiththedualcoinoption,thelowerdenominationharnessconnector(red/green
andorange wires) areconnected to thelower connector onthe DMC computer. The higher
denominationharness(black/green/orangewires)areconnectedtothehigherconnectoron
DMCcomputer.
N. TO REPLACE KEYBOARD (TOUCH PAD)
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint
Drawer Removal Procedures in Section Aand Section B).
3. Remove screw located in the bottom right hand corner of the control panel.
4. Open the control panel and disconnect keyboard (touch pad) ribbon connector from the DMC computer by
holding onto the blue ribbon connector and pulling outward.
5. Remove the “U” shaped coin reject/return holder located on the bottom of the keyboard (touch pad) by
removing the two (2) hex nuts (with a 1/4” nut driver) at the back side of the control panel securing the “U”
coin reject/return holder to panel.
6. Peel the keyboard (touch pad) off the panel. The ribbon cable/connector will come out through the slot in
the control panel.
7. To replace the keyboard (touch pad), peel the paper backing off the new keyboard (touch pad). Put the
ribbon cable/connector through the slot in the control panel. Holding the new keyboard (touch pad) close
to the panel, align it into position and gently press into place.
8. Replace the “U” shaped coin reject/return holder removed in Step #5.
9. Reverse Step #1 through Step #4.

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O. TO REPLACE COIN ACCEPTOR
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door
Removal Procedures in Section Aand Section B).
3. Remove the screw located in the bottom right hand corner of the control panel.
4. Disconnect the optic switch connector(s) from the jumper connector(s). This is done by squeezing the
optic switch connector tabs and pulling it apart.
5. Remove the two (2) nuts holding the “U” shaped coin reject/return holder by using a 1/4” nut driver.
6. Remove the two (2) nuts located at the top of the coin acceptor with the same 1/4” nut driver. The coin
acceptor can now be removed.
7. Reverse procedure for installing the new coin acceptor.
8. Reestablish power to the dryer.
P. TO REPLACE EITHER MOTOR RELAY
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door
Removal Procedures in Section Aand Section B).
3. Remove screw located in the bottom right hand corner of the control panel and open control panel.
4. Either the relay can be removed with the control box in place on the dryer, or the control box can be
removed from the dryer and placed on a flat surface. To remove the control box, follow Control Box
Removal Procedure in Section D.
5. Disconnect the wires on the particular relay that needs to be replaced. (NOTE: the location of each wire
on the relay.)
6. Remove the motor relay from the control box by removing the two (2) screws and nuts securing it to the
controlbox.
7. Install new relay by reversing the steps above.
IMPORTANT: Besureto note the locationofwireson the relaybeforeremoval.

16
Q. BASKET (TUMBLER) ALIGNMENT - VERTICAL (REFER TO PAGE 17)
1. Discontinue power to the dryer.
2. Remove the upper half of the rear split back guard panel to either the top or the bottom basket (tumbler),
depending on which basket (tumbler) is being serviced.
3. Loosen the four (4) hex head bolts on the sides of the bearing box (two [2] on each side).
4. Back off jam nuts on the two (2) Allen head adjustment screws.
5. Turn the screws clockwise (CW) evenly to raise the basket (tumbler) or counterclockwise (CCW) evenly
to lower the basket (tumbler).
6. Rotate the basket (tumbler) from the front and check alignment with the main door opening.
IMPORTANT: Leavea larger gapfromtheinsidering on the topofthefront panel opening tothe
basket(tumbler),and a smallergapon the bottomtocompensate for theweightof the
clothesbeing dried.
7. Tighten the four (4) hex head bolts on the sides of the bearing box and the two (2) jam (hex) nuts on the
Allen head adjustment screws.
8. Check the belt tension and make the necessary adjustments (follow Belt/Idler Tension Adjustment
Procedure in Section K).
9. Reinstall the upper half of the rear split back guard panel removed in Step #2.
10. Reestablish power to the dryer.
R. BASKET (TUMBLER) ALIGNMENT (LATERAL)
1. Discontinue power to the dryer.
2. Remove the upper half of the rear split back guard panel to either the top or the bottom basket (tumbler),
depending on which basket (tumbler) is being serviced.
3. Loosen the two (2) hex head bolts (one [1] turn is enough) that hold the pillow block bearing to the bearing
box.
4. Back off the two (2) jam (hex) nuts on the side adjustment bolts. Rotate the basket (tumbler) from the front
of the dryer, checking the space between the basket (tumbler) and the front panel. Door opening should
be equal on each side.
5. The lateral adjustment (Refer to illustration on next page)
a. To increase gap R, loosen (turn counterclockwise [CCW]) adjustment boltAand tighten (turn clockwise
[CW]) adjustment bolt B.