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ADG-320D and ADG-330D
24 VAC Phase 5
Dual Microprocessor Controller (DMC)
Mechanical/Electrical
Service Procedures
American Dryer Corporation
88 Currant Road
Fall River, MA 02720-4781
T elephone: (508) 678-9000 / Fax: (508) 678-9447
e-mail: techsupport@amdry .com
www .amdry.com
062094 ADC Part No. 450303
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Retain This Manual In A Safe 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.
FOR YOUR SAFETY
Do not store or use gasoline or
other flammable vapors and
liquids in the vicinity of this or
any other appliance.
W e 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.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables à proximité de cet
appareil ou de tout autre appareil.
Important
For your convenience, log the following information:
DA TE OF PURCHASE ____________________________ MODEL NO. __________________________________________
RESELLER’S NAME _______________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADC factory. When ordering replacement parts from the factory ,
you can F AX your order to ADC at (508) 678-9447 or telephone your order directly to the ADC Parts Department at (508)
678-9000. Please specify the dryer model number and serial number in addition to the description and part number, so that
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.
“IMPORT ANT NOTE TO PURCHASER”
Information must be obtained from your local gas supplier on the instructions
to be followed if the user smells gas. These instructions must be posted in a
prominent location near the dryer.
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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) ST ANDARDS.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER
APPLIANCE.
DO NOT DRY MOP HEADS IN THE DRYER.
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.
CAUTION
DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN
OPERATION.
WARNING
CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR
THE DRYERS.
CHILDREN SHOULD BE SUPERVISED IF NEAR DRYER(S) IN
OPERATION.
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.
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WARNING
DRYER MUST NEVER BE OPERATED WITHOUT THE LINT
FILTER OR SCREEN IN PLACE, EVEN IF AN EXTERNAL LINT
COLLECTION SYSTEM IS USED.
IMPORTANT
PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the
equipment and specified in the installation manual included with the dryer.
The wiring diagram for the dryer is located in the front electrical control box area.
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Table of Contents
SECTION I
ROUTINE MAINTENANCE .................................................................................... 3
A. Cleaning ..................................................................................................................................... 3
B. Adjustments ............................................................................................................................... 4
C. Lubrication ................................................................................................................................. 4
SECTION II
MECHANICAL ........................................................................................................... 5
A. T o Remove Lint Drawer ............................................................................................................. 5
B. To Remove Control (Middle) or Lint (Lower) Door .................................................................... 5
C. T o Remove Gas V alve T rain Assembly ........................................................................................ 5
D. T o Remove Control Box ............................................................................................................. 6
E. To Remove Front Panel .............................................................................................................. 6
F. T o Remove/Replace Lint Drawer Switch Assembly ..................................................................... 7
G. T o Remove/Replace Sensor Bracket and/or Its Components ....................................................... 7
H. T o Remove/Replace Belt ............................................................................................................ 8
I. T o Remove/Replace Motor......................................................................................................... 9
J. T o Remove/Replace Impellor (Fan/Blower)............................................................................... 11
K. Belt/Idler Tension Adjustment.................................................................................................... 12
L. To Remove Dual Microprocessor Controller (DMC) Computer Panel Assembly........................ 13
M. T o Replace DMC Computer..................................................................................................... 13
N. T o Replace Keyboard (Touch Pad)........................................................................................... 14
O. T o Replace Coin Acceptor........................................................................................................ 15
P . T o Replace Either Motor Relay ................................................................................................. 15
Q. Basket (Tumbler) Alignment (V ertical) ....................................................................................... 16
R. Basket (Tumbler) Alignment (Lateral) ........................................................................................ 16
S. T o Replace Basket (Tumbler) and/or Basket (T umbler) Support ................................................ 18
T . T o Replace Basket (Tumbler) Support Pillow Block Bearing...................................................... 19
U. T o Replace Basket (Tumbler) Support Flange Bearing ............................................................... 19
V. T o Replace 330º (Burner) Hi-Limit Switch (Thermostat)............................................................ 21
W. To Replace Sail Switch ............................................................................................................. 21
X. T o Replace Main Door Switch .................................................................................................. 22
Y. T o Replace Direct Spark Ignition (DSI) Module ........................................................................ 22
Z. To Replace Ignitor/Probe Assembly .......................................................................................... 23
AA. To Replace Gas V alve............................................................................................................ 23
BB . To Convert Dryer From Natural Gas to Liquid Propane (L.P.) Gas ......................................... 24
CC. To Replace Coin V ault ........................................................................................................... 25
DD. To Remove Main Door.......................................................................................................... 25
EE . T o Install New Main Door Glass ............................................................................................ 26
FF. T o Replace Main Door Gasket .............................................................................................. 26
GG. To Replace Main Door Hinge ................................................................................................ 26
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SECTION III
TROUBLESHOOTING ...........................................................................................28
SECTION IV
ELECTRICAL TROUBLESHOOTING ................................................................ 36
SECTION V
DATA LABEL INFORMATION ............................................................................. 4 1
A. Data Label ............................................................................................................................... 41
B. T esting and Adjusting Gas Pressure ........................................................................................... 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) Failure Codes ................................................................................ 45
B. L.E.D. Display Indicators (Dots) ............................................................................................... 46
C. Phase 5 DMC Computer Relay Output L.E.D. Indicators.......................................................... 46
D. Phase 5 DMC Computer Input/Output L.E.D. Indicators .......................................................... 47
SECTION VII
PHASE 5 DUAL MICROPROCESSOR CONTROLLER (DMC)
PROGRAMMING LIMITS ..................................................................................... 4 8
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SECTION I
ROUTINE MAINTENANCE
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: LINT FROM MOST FABRICS IS HIGHLY COMBUSTIBLE. THE
ACCUMULA TION OF LINT CAN CREA TE A POTENTIAL FIRE HAZARD.
WARNING: KEEP DR YER AREA CLEAR AND FREE FROM COMBUSTIBLE
MA TERIALS, GASOLINE, AND OTHER FLAMMABLE VAPORS AND
LIQUIDS.
NOTE: Suggested time intervals shown are for average usage, which is considered six (6) to eight (8)
operational (running) hours per day .
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: Lint accumulation will restrict the airflow over the motor(s), causing overheating and
irreparable motor damage. Motor failure due to lint accumulation will VOID THE
WARRANTY.
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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.
W ARNING: THE ACCUMULA TION OF LINT IN THE EXHAUST DUCTWORK CAN
CREA TE A POTENTIAL FIRE HAZARD.
Clean the steam coil fins (or filters). We suggest using compressed air and a vacuum cleaner with brush
attachment.
NOTE: When cleaning steam coil fins, be careful not to bend the fins. If fins are bent, straighten by
using a fin comb, which is available from local air conditioning supply houses.
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. A cracked or seriously frayed belt(s) should be replaced. T ighten loose belt(s) when necessary and
check the alignment. Complete operational check of controls and valves. Complete operational check of
safety devices (door switches, lint compartment switches, sail switches, and burner and hi-limit thermostats).
ALL
C. LUBRICATION
The motor bearings, idler bearings, and basket (tumbler) bearings are permanently lubricated. No lubrication is
necessary.
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SECTION II
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 A and 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.
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IMPORTANT: When removing the gas valve train assembly, be careful not to snag or damage the gas
valve train wiring disconnected in Step #6.
8. Reverse procedure to reinstall the gas valve train assembly.
NOTE: Be sure to open ALL gas shutoff valves closed prior to removing the gas valve train assembly.
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
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.
Section A and Section B).
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: If the control box is attached to the dryer cabinet, the three (3) wiring harnesses mentioned in
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: There are two (2) harnesses that connect to lint drawer switch box. Locate and disconnect the
one that leads to the front panel.
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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
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.
ALL nine (9) screws from the front panel. There are four (4) on the left side, four (4) on the right
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
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.
Section A and Section B).
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 A and 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.
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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. T o 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: When reinstalling the sensor bracket assembly to the dryer, be sure the internal wires
DO NOT get pinched between the sensor bracket and the holder .
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
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
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.
Section A and Section B).
Section D).
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.
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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: Be sure to set the proper belt tension at idler adjustment (follow Belt/Idler T ension
Adjustment Procedure in Section K).
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/ L int
Door Removal Procedures in Section A and 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: DO NOT 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.
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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)
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.
ALL the way onto shaft.
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: Failure to have the impellor (fan/blower) properly aligned can result in the impellor
(fan/blower) being damaged.
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.
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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
NOTE: If lower basket (tumbler) is being serviced, the control box does not have to be 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.
Section D).
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.
1 1. 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)
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.
ALL the way onto shaft.
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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 8inches (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: Failure to have the impellor (fan/blower) properly aligned can result in the impellor
(fan/blower) being damaged.
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: If lower basket (tumbler) is being serviced, the control box does not have to be removed.
3. T o adjust tension, while holding spade tension bolt in place (i.e., with channel lock pliers), loosen the 9/16”
OD locking nut. T o increase tension, tighten the inner 9/16” OD nut; to decrease tension, loosen the inner
nut.
NOTE: Approximate proper belt tension - when there is a 1-inch (2.54 cm) space between the idler
adjustment bracket and the first thread on the right hand side of the spade tension bolt.
4. Once proper adjustment is achieved, secure the 9/16” locking nut.
5. Reverse Step #1 and Step #2.
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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
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.
Section A and Section B).
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 A and 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: These connectors can be removed from the DMC computer by squeezing the side tabs while
pulling the connector outward.
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
pulling outward.
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.
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IMPORTANT: When installing the new Dual Microprocessor Controller (DMC) computer, make sure
that the transformer on the DMC computer is located at the bottom area of the control
panel.
9. Reverse Step #1 through Step #6.
NOTE: When reconnecting the optic switch harness connector for single coin acceptor models,
connect the harness to the lower of the two (2) connectors on the DMC computer.
NOTE: For models with the dual coin option, the lower denomination harness connector (red/green
and orange wires) are connected to the lower connector on the DMC computer . The higher
denomination harness (black/green/orange wires) are connected to the higher connector on
DMC computer.
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 A and 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
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.
Section A and Section B).
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
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
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
control box.
7. Install new relay by reversing the steps above.
IMPORTANT: Be sure to note the location of wires on the relay before removal.
Section A and Section B).
Section D.
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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: Leave a larger gap from the inside ring on the top of the front panel opening to the
basket (tumbler), and a smaller gap on the bottom to compensate for the weight of the
clothes being 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 S tep #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 bolt A and tighten (turn clockwise
[CW]) adjustment bolt B.
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b. T o decrease gap R, loosen (turn counterclockwise [CCW]) adjustment bolt B and tighten (turn clockwise
[CW]) adjustment bolt A.
c. T o increase gap L, loosen (turn counterclockwise [CCW]) adjustment bolt B and tighten (turn clockwise
[CW]) adjustment bolt A.
d. T o decrease gap L, loosen (turn counterclockwise [CCW]) adjustment bolt A and tighten (turn clockwise
[CW]) adjustment bolt B.
6. Tighten and secure both adjustment bolts and jam (hex) nuts.
7. Tighten bearing bolts loosened in Step #3.
8. Check belt tension and make the necessary adjustments (follow Belt/Idler T ension Adjustment Pr ocedure
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.
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S. TO REPLACE BASKET (TUMBLER) AND/OR BASKET (TUMBLER)
SUPPOR T
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
3. If lower basket (tumbler) is being serviced, proceed to Step #4.
If upper basket (tumbler) is being serviced, slide the control box out 3/4’s of the way and disconnect the
three (3) wire harness connectors located at the back of the control box, then remove control box from the
dryer.
4. Remove front panel from the basket (tumbler) being serviced (follow Front Panel Removal Procedure in
Section E).
5. Remove belt from dryer (follow Belt Removal Procedure in Section H).
6. Remove both the upper and lower halves of the rear split back guard panels to either the top or the bottom
basket (tumbler), depending on which basket (tumbler) is being serviced.
Section A and Section B).
7. Loosen the two (2) setscrews on the pillow block bearing and flange bearing. (The two [2] setscrews on
the flange bearing can be reached through the opening at the bottom of the bearing box.)
8. Remove the basket (tumbler) and support assembly from the front of the dryer. If the basket (tumbler)
cannot be removed freely, clean the shaft area (with emery cloth) and spray with WD-40 or a similar
lubricant. Then, with a block of wood against the shaft end, strike the block of wood with a hammer or
mallet to move shaft past any burrs made by the setscrews.
IMPORTANT: DO NOT strike the shaft directly with a hammer .
9. If entire basket (tumbler) and support assembly is being replaced, proceed to Step #11.
10. Removal of support from the basket (tumbler):
a. Remove the socket setscrew at center of inside basket (tumbler) back wall.
b. Loosen and remove the three (3) sets of nuts and washers from the basket (tumbler) tie rods, then
remove the three (3) tie rods.
c. Reassemble support to basket (tumbler) by reversing the procedure.
11. Reassemble the basket (tumbler) and support assembly into the dryer by reversing Step #7 and Step #8.
12. Reinstall the belt removed in Step #5.
13. Reinstall the front panel removed in Step #4.
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14. Make the necessary vertical alignment and lateral alignment adjustments (follow Basket [T umbler] V ertical
Alignment and Basket [Tumbler] Lateral Alignment Procedures in
15. Reinstall both the upper and lower halves of the rear split back guard panels removed in Step #6.
Section Q and Section R).
16. Make the necessary belt/idler adjustment (follow Belt/Idler Tension Adjustment Procedure in
K).
17. Reverse Step #1 through Step #3.
Section
T. TO REPLACE BASKET (TUMBLER) SUPPORT PILLOW BLOCK BEARING
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 pillow block bearing adjustment jam (hex) nuts and bolts (one [1] on each side of bearing support).
4. Loosen the two (2) bearing setscrews.
5. Remove the two (2) sets of nuts, washers, and bolts securing the bearing to the bearing box support, then
remove the bearing.
6. Reinstall bearing and hardware by reversing Step #3 through Step #5.
7. Make the necessary vertical alignment and lateral alignment adjustments (follow Basket [T umbler] V ertical
Alignment and Basket [Tumbler] Lateral Alignment Procedures in
Section Q and Section R).
IMPORTANT: Make sure proper belt adjustment is made.
8. Reinstall the upper half of the rear split back guard panel removed in Step #2.
9. Reestablish power to the dryer.
U. TO REPLACE BASKET (TUMBLER) SUPPORT FLANGE BEARING
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control/lint door (follow Lint Drawer and Control/Lint Door Removal
Procedures in Section A and Section B).
3. If the lower basket (tumbler) is being serviced, proceed to Step #4.
If upper basket (tumbler) is being serviced, slide the control box out 3/4s of the way and disconnect the
three (3) wire harness connectors located at the back of the control box, then remove the control box from
the dryer.
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4. Remove front panel from the basket (tumbler) being serviced (follow Front Panel Removal Procedure
in
Section E).
5. Remove belt from dryer (follow Belt Removal Procedure in Section H).
6. 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.
7. Loosen the two (2) setscrews on the pillow block bearing and flange bearing. The two (2) setscrews on the
flange bearing can be reached through the opening at the bottom of the bearing box.
8. Remove the basket (tumbler) and support assembly from the front of the dryer. If the basket (tumbler)
cannot be removed freely, clean shaft area (with emery cloth) and spray with WD-40 or a similar lubricant.
Then, with a block of wood against the shaft end, strike the block of wood with a hammer or mallet to move
shaft past any burrs made by the setscrews.
IMPORTANT: DO NOT strike the shaft directly with a hammer .
9. Remove the four (4) sets of nuts, washers, and bolts securing the bearing box assembly to the dryer. Then,
remove the bearing box assembly.
10. Remove the four (4) nuts securing the flange bearing to the dryer, then remove the bearing from dryer.
Reverse procedure for installing new bearing.
1 1. Reassemble basket (tumbler)/support assembly into the dryer.
12. Reassemble bearing box assembly to dryer.
13. Reconnect belt to idler/motor removed in Step #5.
14. Reinstall the front panel removed in Step #4.
15. Make the necessary vertical alignment and lateral alignment adjustments (follow Basket [T umbler] V ertical
Alignment and Basket [Tumbler] Lateral Alignment Procedures in Section Q and Section R).
16. Check belt tension and make the necessary adjustments (follow Belt/Idler Tension Adjustment Procedure
in Section K).
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V. TO REPLACE 330º (BURNER) HI-LIMIT SWITCH (THERMOSTAT)
NOTE: The 330º (burner) hi-limit switch (thermostat) is located on the burner box chamber at the rear
of dryer.
1. Discontinue power to the dryer.
2. Remove the lower half of the split back guard panel to either the top or the bottom basket (tumbler),
depending on which basket (tumbler) is being serviced.
3. Disconnect wiring to the 330º hi-limit switch (thermostat).
4. Disassemble hi-limit from burner chamber by removing the two (2) sheet metal screws securing hi-limit to
the burner box chamber.
5. Reverse procedure for installing new 330º (burner) hi-limit switch (thermostat).
6. Reestablish power to the dryer.
W. TO REPLACE SAIL SWITCH
NOTE: The sail switch/damper is located in the area of the gas valve train assembly .
1. Discontinue power to the dryer.
2. Remove the lint drawer and the control/lint door (follow Lint Drawer and Control/Lint Door Removal
Procedures in Section A and Section B).
3. Remove the sail switch/damper rod assembly from the dryer.
4. Disassemble the sail switch bracket assembly from the dryer by removing the two (2) Phillips head screws
located in the lint drawer area.
5. Disassemble the sail switch from the mounting bracket by loosening and removing the two (2) slotted head
machine screws securing the sail switch to the sail switch bracket.
NOTE: When disassembling the sail switch from the bracket, hold on to the twin speed nut located at
the back side of the sail switch bracket into which the screws are threaded.
6. Disconnect the two (2) wires from the sail switch.
7. Reverse Step #3 through Step #6 to install new sail switch.
8. Adjust the sail switch by bending the actuator arm of the switch itself, so that when the sail switch damper
is manually closed, the sail switch activates and when the damper is released, the sail switch deactivates.
9. Reverse Step #1 and Step #2.
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X. TO REPLACE MAIN DOOR SWITCH
1. Discontinue power to the dryer.
2. Open the main door completely .
3. Remove the two (2) Phillips head screws holding the main door switch housing in place.
4. Disconnect the main door switch wires from the switch (two [2] yellow wires).
5. Disassemble door switch by removing the two (2) nuts and washers holding the door switch in place.
6. Reverse this procedure to install new door switch.
IMPORTANT: UNDER NO CIRCUMSTANCES should the door switch be disabled.
IMPORTANT: When reinstalling the door switch housing to the dryer, be sure the internal wires DO
NOT get pinched between the door switch housing and the front panel.
7. Reestablish power to the dryer.
Y. TO REPLACE DIRECT SPARK IGNITION (DSI) MODULE
1. Remove the lint drawer, the control/lint door , and the gas valve train assembly from the dryer (follow Gas
Valve Train Removal Procedure in Section C).
2. Disassemble the DSI module/bracket assembly from the gas valve train slide by removing the two (2) sets
of nuts and washers securing the bracket to the gas valve train.
3. Disconnect ALL wiring to the DSI module including the orange high voltage (HV) lead.
IMPORTANT: Identify the location of each wire for correct reinstallation.
4. Disassemble the DSI module from the bracket by removing the four (4) sets of nuts and washers securing
the DSI module to the bracket.
5. Reverse Step #3 through Step #5 to install the new DSI module.
IMPORTANT: Be sure wires removed in Step #4 are connected to the correct terminal positions.
When connecting the orange high voltage (HV) lead to the DSI module, be sure it is
securely in place.
6. Reinstall the gas valve train, the control/lint door, and the lint drawer removed in Step #2.
7. Reestablish power to the dryer.
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Z. TO REPLACE IGNITOR/PROBE ASSEMBLY
1. Discontinue power to the dryer.
2. Remove the lint drawer, the control/lint door, and the gas valve train assembly from dryer (follow Gas
Valve Train Removal Procedure in
3. To replace either ignitor probe or flame sensor probe, simply remove Phillips head screw holding device to
bracket and disconnect wire.
4. Reverse Step #2 and Step #3 to install the new ignitor and/or flame-probe assembly.
5. Reestablish power to the dryer.
Section C).
AA. TO REPLACE GAS VALVE
1. Discontinue power to the dryer.
2. Close
3. Remove the lint drawer, the control/lint door, and the gas valve train assembly from dryer (follow Gas
4. Remove 1/2” street elbow from inlet side of gas valve.
5. Remove manifold from gas valve.
6. Remove pressure test line (brass) elbow from the gas valve pressure tap.
7. Reverse Step #4 through Step #6 to install the new gas valve.
ALL gas shutoff valves in gas supply line to the dryer .
Valve Train Removal Procedure in
a. Remove the two (2) sheet metal screws from bottom side of the gas valve train slide, which secure the
brackets at the inlet side of the gas valve.
b. Remove the two (2) sets of nuts securing the manifold bracket to the gas valve train slide and disassemble
valve/manifold assembly from slide.
Section C).
IMPORTANT: When using pipe dope for gas connections, only pipe dope suitable for both natural
gas and liquid propane (L.P .) gas applications is to be used!!!
NOTE: The new gas valve is supplied with a plug at the pressure tap. Remove this plug and replace it
with the brass elbow removed in Step #6.
8. Reassemble the gas valve/manifold assembly to the gas valve train slide by reversing Step #3.
NOTE: When making wiring connections, be sure the jumper wire is in place at gas valve terminal #1
and terminal #3.
9. Reinstall the gas valve train assembly into dryer removed in Step #3.
NOTE: Be sure the union shutoff valve at the inlet area of the gas valve is in the “On” (open) position.
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10. Reinstall the control/lint door and the lint drawer removed in Step #3.
11. Open
12. Reestablish power to the dryer.
ALL shutoff valves closed in Step #2.
BB. TO CONVERT DRYER FROM NATURAL GAS TO LIQUID PROPANE (L.P.)
GAS
1. Discontinue power to the dryer.
2. Close
3. Remove the lint drawer, the control/lint door, and the gas valve train assembly from dryer (follow Gas
4. With the gas valve train assembly removed from the dryer, remove the two (2) sets of nuts securing the
5. Pull manifold/valve assembly back slightly , so that the burner orifice is exposed.
6. Unscrew burner orifice and replace with L.P. orifice.
ALL gas shutoff valves in gas supply line to the dryer.
Valve Train Removal Procedure in
manifold bracket to the gas valve train slide.
Section C).
IMPORTANT: Use extreme care when removing and replacing orifice. THIS ORIFICE IS
MADE OF BRASS, WHICH IS EASILY DAMAGED.
NOTE: Consult factory when replacing orifice for elevations over 2,000 feet (609.6 meters).
7. Reinstall the valve/manifold assembly by reversing Step #4 through Step #6.
8. Locate valve regulator adjustment cover. Remove cover with slotted screwdriver, install the L.P. valve
stem/spring kit, then reinstall cover.
9. Reinstall the gas valve train assembly removed in Step #3.
NOTE: Be sure the union shutoff valve at the inlet area of the gas valve is in the “On” (open) position.
10. Reinstall the control/lint door and the lint drawer removed in Step #3.
1 1. Convert opposite basket (tumbler) by following Step #2 through Step #11.
12. Once the conversion of both baskets (tumblers) is complete, open ALL gas shutoff valves closed in Step
#2.
IMPORTANT: The gas valve pressure regulators are now blocked open. Gas pressure must now be
regulated at the source (L.P . tank) or a regulator must be added in the gas supply line
of each dryer. A consistent water column (W .C.) pressure of 10.5 to 1 1.0 inches
(26.1 to 27.4 mb) must be provided.
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13. Reestablish power to the dryer.
CC. TO REPLACE COIN VAULT
1. Discontinue power to the dryer.
2. Remove both the upper and lower lint drawers and the control/lint doors from the dryer (follow Lint
Drawer and Control/Lint Door Removal Procedures in
3. Remove the control box and the lower front panel from the dryer (follow Front Panel Removal Procedure
Section E).
in
4. Remove the coin box.
5. From inside of coin vault, loosen and remove the four (4) nuts securing the coin vault to dryer inner top.
Then, remove the coin vault from the dryer.
6. Install the new coin vault by reversing Step #5. DO NOT tighten the four (4) nuts, they must be left loose
at this time for the coin vault adjustment.
7. Reinstall the front panel removed in Step #3.
Section A and Section B).
8. Tighten the four (4) coin vault hex nuts left loose in Step #6.
9. Reinstall the coin box removed in Step #4.
10. Reinstall the control box removed in Step #3.
1 1 . Reinstall control/lint doors and lint drawers removed in Step #2.
12. Reestablish power to the dryer.
DD. TO REMOVE MAIN DOOR
1. Open main door completely.
2. While holding the door in place, remove the four (4) Phillips head screws securing main door to the front
panel hinge.
3. Reinstall the main door by reversing procedure.
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EE. TO INSTALL NEW MAIN DOOR GLASS
1. Remove the main door assembly from the dryer (follow Main Door Removal Procedure in Section
DD).
2. Lay main door on flat surface with front of door face down.
3. Apply a narrow bead of silicone (ADC P/N: 170730)
rest.
ALL around the main door area where the glass will
IMPORTANT: This area must be completely cleaned for correct bonding.
4. Install the glass onto the door glass adhesive and slightly press glass in place.
IMPORTANT: DO NOT press hard or silicone thickness between the glass and the door will be
reduced resulting in poor bonding.
5. The door assembly should now be put in an area where it will not be disturbed for at least 24 hours.
Depending on the conditions, the curing time of this adhesive is 24 to 36 hours.
6. After the 24 to 36 hour curing period, reinstall main door onto the dryer.
FF. TO REPLACE MAIN DOOR GASKET
1. Open the main door completely .
2. Remove ALL existing main door gasket material with a putty knife or similar device. Make sure the door
surface is as clean as possible.
3. Apply a small bead of adhesive (ADC P/N: 170730) ALL around the main door gasket cavity area.
4. Gently push the gasket in place starting at the left side of the door (near the main door switch).
5. Dryer should be left out of operation for at least 8 hours.
GG. TO REPLACE MAIN DOOR HINGE
1. Discontinue power to the dryer.
2 Remove the lint drawer, the control/lint door, the control box, and the front panel from the dryer (follow
Control Box Removal Procedure in Section D).
NOTE: Before removing the front panel from the dryer, remove the main door assembly (follow Main
Door Removal Procedure in Section DD).
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3. Remove the main door switch housing from the front panel (follow Main Door Switch Replacement
Procedure in
4. Disassemble main door hinge from the front panel by removing the four (4) nuts securing hinge to back side
of the front panel.
5. Position the new hinge, so that the part of the hinge that the main door is secured to, is towards the front
panel main door opening.
6. Install hinge studs through the front panel holes and secure in place with the four (4) nuts removed in Step
#4.
7. Reinstall the main door switch housing removed in Step #3.
8. Reverse Step #1 and Step #2.
Section X).
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SECTION III
TROUBLESHOOTING
The information provided is a quick reference to help isolate the most probable component(s) associated with the
difficulty described. The experienced technician realizes, however , that a loose connection or broken or shorted
wire may be at fault where electrical components are concerned...not necessarily the suspect component itself.
Electrical parts should be checked for failure before being returned to the factory.
The information provided should not be misconstrued as a handbook for use by an untrained person in making
repairs.
IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the fuse
being replaced.
WARNING:
WARNING: WHILE MAKING REP AIRS, OBSERVE ALL SAFETY PRECAUTIONS
A. No light emitting diode (L.E.D.) display...
1. Service panel fuse blown or tripped breaker.
2. Blown control circuit fuse (3AG 1/2-amp [Slo-Blo] fuse).
3. Failed Dual Microprocessor Controller (DMC) computer.
B. Basket (tumbler) motor does not start, DMC computer shows drying cycle in progress and
L.E.D. motor indicator dot is on...
1. DMC computer indicator is on...
a. Failed motor contactor/relay.
b. Failed motor.
ALL SER VICE AND TROUBLESHOOTING SHOULD BE PERFORMED BY
A QUALIFIED PROFESSIONAL.
DISPLA YED ON THE DR YER AND/OR SPECIFIED IN THIS MANUAL.
2. DMC computer indicator is off (and L.E.D. display
a. Failed DMC computer.
C. Basket (tumbler) does not turn but motor and DMC computer motor L.E.D. dot and motor
output L.E.D. indicators are on...
1. Loose basket (tumbler) belt (check tension/adjustment).
2. Basket (tumbler) belt jumped off motor or idler shaft.
3. Broken basket (tumbler) belt.
does not read “door”)...
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D. The dryer will not stop, even with no cycle (light emitting diode [L.E.D.] display reads “FILL”)
in progress...
1. Failed motor contactor/relay.
E. The dryer operates for a few minutes, and with the dual microprocessor controller (DMC)
computer motor L.E.D. indicator dot on, the motor stops, and then after a period of time restarts
on its own...
1. Motor is overheating and tripping out on its internal overload...
a. Motor air vents clogged with lint.
b. Low voltage to motor .
F . The dryer operates for a few minutes and then stops...DMC computer L.E.D. display continues
to read cycle in progress, indicator dots are off and dryer can be restarted by pressing selection
key...
1. Intermittent connection in main door/lint drawer circuit...
a. Main door switch or lint drawer switch is out of proper adjustment.
b. Loose connection in main door switch or lint drawer switch wiring.
c. Failed main door switch or lint drawer switch.
G. The dryer does not start, and the DMC computer L.E.D. display reads “door”...
1. DMC “door” input L.E.D. is off...
a. Main door and/or lint drawer
b. Failed main door switch.
c. Failed lint drawer switch.
d. Open circuit (broken wire and/or termination) in main door switch circuit wiring or lint drawer switch
circuit wiring.
e. Failed 24 VAC step down transformer.
2. DMC “door” input L.E.D. is on...
a. Failed DMC computer.
is not properly closed.
H. The dryer does not start (coin models only)...coin(s) inserted and the L.E.D. display continues
to read “FILL” and/or “Amount to S tart” (does not read “PUSH”)...
1. Coin acceptor is not adjusted properly (housing is not flush with panel) or is dirty with lint.
2. Failed coin acceptor optic switch.
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3. Parameter in Program Location 01 (PL01) set incorrectly.
a. Bad coin program should be set for “bCrS” and not “bCLO.”
I. Dual Microprocessor Controller (DMC) computer light emitting diode (L.E.D.) display reads
“dSFL”...
1. L.E.D. display consistently reads “dSFL” and will not clear ...
a. DMC computer 1/8-amp (Slo-Blo) fuse is blown.
b. Failed DMC computer temperature sensor.
c. Broken wire and/or termination in sensor harness somewhere between the sensor bracket and the
DMC computer.
2. L.E.D. display reads “dSFL” for a short period of time (30 seconds or less) and then returns to the normal
stop “FILL” mode...
NOTE: Once the DMC computer detects a problem, it updates every 30 seconds so that if a problem
was a loose connection in this circuit, which corrected itself, the “dSFL” display condition
would automatically be canceled.
a. Loose wire and/or termination in sensor harness somewhere between the sensor bracket and the DMC
computer.
b. Failed DMC computer temperature sensor.
J. DMC computer L.E.D. display reads “Hot”...
The “Hot” display condition indicates a possible overheating condition. The DMC computer monitors the
temperature in the dryer at ALL times. If the DMC computer detects that the temperature in the dryer has
exceeded 170º F (77º C), it will disable ALL of the dryer outputs (shut the dryer down), the buzzer (tone) will
sound for approximately 5 seconds, and the L.E.D. display will read “Hot.” The L.E.D. display will continue to
read “Hot” until the temperature has dropped to 170º F (77º C) or lower and the DMC computer is manually
reset by closing and opening the Program Switch (PS).
Possible reasons for overheating...
1. Restriction in location exhaust ductwork.
a. Dryer exhaust damper stuck in closed position.
b. Undersized exhaust ductwork.
2. Insufficient make-up air.
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K. Dual Microprocessor Controller (DMC) computer light emitting diode (L.E.D.) display reads
“SEFL”...
The “SEFL” display condition indicates a rotational sensor circuit failure, which means that there is a fault
somewhere in the basket (tumbler) rotation detection circuit...or...the DMC computer program related to this
circuit (PL01) is set incorrectly in the active mode (“SEn”) where the dryer
rotational sensor and should be set in the nonactive mode (“nSEn”). If the dryer is equipped with the optional
rotational sensor and for whatever reason the DMC computer detects that the basket (tumbler)
will disable ALL of the dryer outputs (shut the dryer down), and the L.E.D. display will read “SEFL.” The
L.E.D. display will continue to read “SEFL” until the DMC computer is manually reset by closing and opening
the Program Switch (PS).
Possible causes...
1. Loose/slipping (out of proper adjustment) basket (tumbler) belt.
2. Broken basket (tumbler) belt.
3. Failed motor.
4. Failure in the rotational sensor circuit...
is not equipped with the optional
is not turning, it
a. Failed rotational sensor.
b. Loose connection or break between the rotational sensor and the DMC computer.
L. DMC computer will not accept any, or only accept certain keyboard (touch pad) entries...
1. Failed keyboard (touch pad) label assembly.
2. Failed DMC computer.
M. DMC computer locks up and the L.E.D. display reads erroneous message(s) or only partial
segments...
1. Transient power voltage (spikes)...disconnect power to the dryer, wait 1 minute (NOTE: for dryer models
with the optional battery back up...disconnect battery), then reestablish power to the dryer. If problem is
still evident, proceed to Items M2 through M4.
2. Failed keyboard (touch pad) label assembly.
3. Improper grounding of the dryer or the DMC computer ground connections to the panel or the dryer are not
proper.
4. Failed DMC computer.
N. Dryer stops during a cycle and the DMC computer L.E.D. display returns to “FILL”...
If dryer is equipped with optional battery back up...
1. Refer to Item M1, Item M3, or Item M4 above.
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If dryer does not have optional battery back up...
1. Loose connection somewhere in the power sourc to the dryer.
2. Loose connection in main power circuit to the dual microprocessor controller (DMC) computer.
3. Improper grounding of the dryer or the DMC computer ground connections to the panel or the dryer
proper.
4. Failed DMC computer.
are not
O. Heating unit is not operating (no heat)...basket (tumbler) is turning, DMC computer heat
indicator dot is on, but “HEA T” output light emitting diode (L.E.D.) is not...
1. Failed DMC computer.
P . Gas heating unit is not operating (no heat)...both DMC computer heat indicator dot and “HEA T”
indicator are on...but no spark at burner area when the dryer is first started...
1. Fault in sail switch circuit...
a. Sail switch is out of adjustment or has failed.
b. Sail switch damper is not closing or is fluttering...
1) Lint drawer/screen is dirty or clogged.
2) Restriction in exhaust ductwork.
2. Fault in burner hi-limit circuit or thermostat.
3. Fault in basket (tumbler) hi-limit circuit or thermostat.
4. Failed Direct Spark Ignition (DSI) module (burner control).
5. Failed DSI ignitor and/or flame-probe assembly .
Q. No heat (gas models only)...ignitor sparks, but there is no flame at burner ...
1. DSI ignitor probe is out of adjustment.
a. Reposition ignitor assembly closer to the burner ribbon area. Also, check to make sure ribbon in burner
is flush ALL around the top of the burner tube (ribbon should not stick up at any area).
b. Check gap between ignitor assembly and top of the burner. Gap must be set 1/8” +/- 1/32”
(3.175 +/- 0.792 mm).
2. Failed ignitor flame-probe assembly or problem with wiring connections to the assembly .
3. No gas (check shutoff valves) or insufficient (low water column [W.C.] pressure) gas supply.
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4. Failed Direct Spark Ignition (DSI) module.
5. Failed gas valve.
R. No heat (gas models only)...ignitor sparks, burner goes on and off right away ...
1. DSI flame sensor (probe) is out of adjustment...reposition closer to the flame area.
2. Failed DSI flame sensor probe.
3. Sail switch is fluttering...
a. Lint drawer/screen is dirty or clogged.
b. Restriction in exhaust ductwork.
4. Insufficient make-up air.
5. Failed DSI module.
S. No heat (electric models only)...both the dual microprocessor controller (DMC) computer heat
indicator dot and “HEA T” output light emitting diode (L.E.D.) indicator are on...but electric
oven is not operating...
1. Fault in sail switch circuit...
a. Sail switch is out of adjustment or has failed.
b. Sail switch damper is not closing or is fluttering...
1) Lint drawer/screen is dirty or clogged.
2) Restriction in exhaust ductwork.
2. Fault in oven hi-limit circuit or thermostat.
3. Fault in basket (tumbler) hi-limit circuit or thermostat.
4. Failed oven contactor.
5. Failed oven electric element.
T . No heat (steam models only)...both the DMC computer heat indicator dot and “HEA T” output
L.E.D. indicator are on...but steam damper system is not operating...
1. Fault in basket (tumbler) hi-limit circuit or thermostat.
2. No external compressed air to steam damper (80 psi [5.51 bar] is required).
3. Steam damper is stuck or damper system airflow control valve is not adjusted properly.
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4. Failed steam damper 24 VAC pneumatic solenoid switch.
5. Failed steam damper piston.
U. Dryer operates, but is taking too long to dry ...
1. Exhaust ductwork run is too long or is undersized...back pressure must be no less than 0 and cannot
exceed 0.3 inches (0.74 mb) water column (W.C.).
2. Low and/or inconsistent gas pressure (gas models only).
3. Insufficient make-up air.
4. Poor air/gas mixture at burner (gas models only)...yellow or poor flame pattern. Adjust gas burner air
adjustment shutters.
5. Lint drawer/screen is not being cleaned out on a regular basis or often enough.
6. Extractors (washers) are not performing properly.
7. Sail switch is fluttering...restriction in exhaust (gas and electric models only).
8. Failed dual microprocessor controller (DMC) computer temperature sensor...temperature calibration is
inaccurate.
9. Failed DMC computer...temperature calibration is inaccurate.
10. Failed burner/oven hi-limit (gas and electric models only).
1 1. Failed basket (tumbler) hi-limit thermostat.
12. Steam damper system (steam models only) not functioning properly...
a. Steam damper is sticking closed or
b. Leak in pneumatic (air) system.
13. Failed electric element (electric models only).
14. Lint accumulation in location exhaust system.
is not adjusted properly .
V. Condensation on main door glass...
1. T oo long, undersized, or improperly installed ductwork.
2. Exhaust back draft damper is stuck closed or partially closed.
3. Restriction in exhaust ductwork.
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W. Dryer is making scraping noise at basket (tumbler) area...
1. Check for object(s) caught in the basket (tumbler) wrapper area.
2. Basket (tumbler) is out of proper alignment...
a. Check both the vertical alignment and lateral alignment.
b. Check gap between the front panel and the basket (tumbler) front...setscrews may have come loose
and basket (tumbler) walked forwards or backwards.
3. Loose or broken basket (tumbler) tie rod.
4. Broken basket (tumbler) support.
X. Excessive noise and/or vibration...
1. Dryer is not leveled properly .
2. Impellor (fan/blower) is out of balance or broken.
3. Loose basket (tumbler) tie rod.
4. Basket (tumbler) is out of adjustment, or adjustment bolts (hardware) are loose.
5. Loose motor or motor mount assembly.
Y. Basket (tumbler) turns too fast (as compared to other baskets [tumblers])...
1. Foreign object(s) caught between basket (tumbler) belt and motor shaft.
Z . Computer registers more time than what was inserted (i.e. 99 minutes for one [1] coin)...
1. Replace optic switch (ADC P/N: 137056).
2. Replace computer board.
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SECTION IV
ELECTRICAL TROUBLESHOOTING
NOTE: Diagrams used in this section include: B474721, B472611, B483751, and ALL the revisions
(a revision is the letter after the number ‘ie’...B474721 B.)
NOTE: A VOL T/OHM meter is needed for this section.
A. No Display Condition...
1. Check top pocket circuit breaker panel for this particular dryer. If tripped, reset.
2. Check 0.5-amp fuse(s) located in the control box. If blown, replace.
3. Check for voltage (110,208,220,230,240) across the top motor contactor . This will have two (2) black wires
together to one point and two (2) white wires to another point on the contactor. Take a voltage reading
across these two points. For 208 volts and higher, it will be two (2) black and two (2) red wires.
4. If there is no voltage, the problem is bad wire(s) or termination(s) between the contactor and the J9 power
connector, or from the J9 connector to the incoming voltage. If voltage is present, check for voltage across
terminal block #6 and #8.
5. If there is no voltage, the problem is bad wire(s) or termination(s) between the contactor and the terminal
blocks #6 and #8. If voltage is present, check for voltage across pins 1 and 4 of the computer 4-pin
connector (J12).
6. If there is no voltage, the problem is a bad wire(s) or termination(s) between terminal blocks #6 and #8 and
the 4-pin connector (J12). If voltage is present, the problem is a faulty computer.
B. No S tart Condition (motor does not turn)...
NOTE: The following sections must be performed with the appropriate output light emitting diode
(L.E.D.) and appropriate L.E.D. indicator dots on.
NOTE: In the following sections, the voltage readings are for 24 VAC unless otherwise specified.
NOTE: If the L.E.D. indicator dot is on and its appropriate L.E.D. output light is not on, replace
computer.
1. Check to see if the appropriate “door” L.E.D. light is on (refer to Section VI of this manual for L.E.D.
identification). If light is not on, refer to “door” section in the electrical troubleshooting of this manual.
2. Check for voltage across the coil connections of the particular contactor pertaining to the basket (tumbler)
being worked on (top contactor-top pocket, bottom contactor-bottom pocket).
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If voltage is present:
a. Manually push down the top of the contactor. If motor turns, replace the contactor.
b. If motor does not turn, problem is bad wire(s) or termination(s) from contactor down to the motor or
faulty motor.
NOTE: Make sure high voltage (110-240V) is present across the top half of the contactor.
If voltage is not present:
a. Check for voltage across the appropriate 9-pin computer connector, pin #4 and the “GND” terminal of
the computer. If voltage is present, problem is bad wire or termination on that blue motor output wire
(pin #4) to the contactor coil. Problem could also be a bad wire or termination on the green ground wire
from the side of the coil to terminal block #7. If no voltage, replace computer.
C. No Heat Condition (gas)
1. Check to see if Direct Spark Ignition (DSI) module fault indicator light emitting diode (L.E.D.) is red. If
red, refer to ADC DSI troubleshooting manual (ADC P/N: 450142).
2. Check for voltage across the “TH” and “GND” terminals of the module. If voltage is present, refer to
ADC DSI technical manual (ADC P/N: 450142).
NOTE: In the following steps, when checking the voltage, leave one of your meter leads attached to
terminal block #7 or any good ground connection. Make sure sail switch damper is closing
properly .
IMPORTANT: By no means should the sail switch be tampered with or bypassed when under normal
drying conditions!!
3. Check for voltage across both terminals of the sail switch. If voltage is present on both terminals, check for
bad wire or termination on the red wire that leaves the sail switch and passes through the gas valve train
connector to the “TH” terminal on DSI module. If voltage is present on one (1) terminal of the sail switch,
replace the sail switch.
4. Check for voltage across both terminals of the burner hi-limit switch. If voltage is present on both terminals,
check for bad wire or termination on the red wire from the burner hi- limit switch through the J19 connector
(top basket [tumbler]) or the J20 connector (bottom basket [tumbler]), to the sail switch. If voltage is
present on one (1) terminal of the burner hi-limit switch, replace this hi-limit switch.
5. Check for voltage across both terminals of the basket (tumbler) hi-limit switch. If voltage is present on both
terminals, check for bad wire or termination on the red wire from the basket (tumbler)
hi-limit switch through the J19 connector (top basket [tumbler]) or J20 connector (bottom basket [tumbler])
to the burner hi-limit switch. If voltage is present on only one (1) terminal of the basket (tumbler) hi-limit
switch, replace the basket (tumbler) hi-limit switch.
6. Check for the “heat out” voltage of the computer upper Dual Microprocessor Controller (DMC) connector
J1 pin #1 for the top basket (tumbler), or the lower DMC connector J12 pin #1 for the bottom basket
(tumbler). If voltage is present on the “heat out” pin of the computer, check for bad wire or termination on
the red wire from the computer “heat out” which passes through the I/O connector in the back of the
computer box to the basket (tumbler) hi-limit switch.
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7. If no voltage, replace the computer.
D. “No Heat” Condition (electric models)
NOTE: The following sections must be performed with the appropriate output light emitting diode
(L.E.D.) and appropriate L.E.D. indicator dots on. Make sure sail switch damper is closing
properly .
IMPORTANT: By no means should the sail switch be tampered with or bypassed when under normal
drying conditions!!
1. Check for the incoming voltage across the top of the oven contactor. This voltage should be 208,240,380,
etc... If this incoming voltage
delay fuses.
2. Check for the 24 volts across the coil of the oven contactor. If voltage is present, replace the oven
contactor or the oven contactor coil.
3. Check for voltage across both terminals of the sail switch. If voltage is present on both terminals, check for
bad wire or termination on the red wire that leaves the sail switch and goes to the oven contactor coil. If
voltage is present on one (1) terminal of the sail switch, replace the sail switch.
is not present, check the external circuit breaker or the dual element time
4. Check for voltage across both terminals of the burner hi-limit switch. If voltage is present on both terminals,
check for bad wire or termination on the red wire from the burner hi-limit switch through the J19 connector
(top basket [tumbler]) or the J20 connector (bottom basket [tumbler]), to the sail switch. If voltage is
present on one (1) terminal of the burner hi-limit switch, replace this hi-limit switch.
5. Check for voltage across both terminals of the basket (tumbler) hi-limit switch. If voltage is present on both
terminals, check for bad wire or termination on the red wire from the basket (tumbler)
hi-limit switch through the J19 connector (top basket [tumbler]) or J20 connector (bottom basket [tumbler])
to the burner hi-limit switch. If voltage is present on only one (1) terminal of the basket (tumbler) hi-limit
switch, replace the basket (tumbler) hi-limit switch.
6. Check for the “heat out” voltage of the computer upper Dual Microprocessor Controller (DMC) connector
J1 pin #1 for the top basket (tumbler), or the lower DMC connector J12 pin #1 for the bottom basket
(tumbler). If voltage is present on the “heat out” pin of the computer, check for bad wire or termination on
the red wire from the computer “heat out” which passes through the I/O connector in the back of the
computer box to the basket (tumbler) hi-limit switch.
7. If no voltage, replace the computer.
E. “No Heat” Condition (steam models)
NOTE: Before proceeding in this section, be sure there is adequate steam pressure being applied to
the coil. Adequate air pressure is also necessary (80 psi +/- 10 psi [5.51 bar +/- 0.68 bar]).
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NOTE: In the following steps, when checking the voltage leave one of your meter leads attached to
terminal block #7 or any good ground connection.
NOTE: The following sections must be performed with the appropriate output light emitting diode
(L.E.D.) and appropriate L.E.D. indicator dots on.
1. Check for voltage across the two (2) black wires of the steam damper solenoid. Y ou can check this voltage
at the J21 top basket (tumbler) connector or the J22 connector for the bottom basket (tumbler). If voltage
is present and damper is not opening, replace the solenoid.
2. Check for voltage across both terminals of the basket (tumbler) hi-limit switch. If voltage is present on both
terminals, check for bad wire or termination on the red wire from the basket (tumbler)
hi-limit switch through the J19 connector (top basket [tumbler]) or J20 connector (bottom basket [tumbler])
to the burner hi-limit switch. If voltage is present on only one (1) terminal of the basket (tumbler) hi-limit
switch, replace the basket (tumbler) hi-limit switch.
3. Check for the “heat out” voltage of the computer upper Dual Microprocessor Controller (DMC) connector
J1 pin #1 for the top basket (tumbler), or the lower DMC connector J2 pin #1 for the bottom basket
(tumbler). If voltage is present on the “heat out” pin of the computer, check for bad wire or termination on
the red wire from the computer “heat out” which passes through the I/O connector in the back of the
computer box to the basket (tumbler) hi-limit switch.
4. If no voltage, replace the computer.
F . “dOOr” Condition
NOTE: The following sections must be performed with the appropriate output L.E.D. and appropriate
L.E.D. indicator dots on.
NOTE: In the following sections, the voltage you are checking for is 24 V AC unless otherwise
specified.
NOTE: If the L.E.D. indicator dot is on and the appropriate L.E.D. output light is not on, replace
computer.
NOTE: If the display reads “dOOr,” this indicates that there is an open circuit in the computer’ s door
switch circuit. This fault display involves the door switch, the computer , the transformer, the
lint drawer switch, or the harnesses. If the L.E.D. input light on the component side of the
computer is on and you are getting the “dOOr” code, replace the computer .
1. Remove the wires from the door switch and check for continuity while pushing down the plunger of the
switch. If no continuity , replace door switch. If continuity, reassemble connections onto the switch.
2. Repeat the same process as in Step #1 for the lint drawer switch.
3. Check for voltage across terminal block #2 and #7. If no voltage is present, replace the 24 volt transformer.
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4. Check for voltage on pin #2 (yellow wire) of the computer 9-pin connector (top 9-pin connector is for the
top basket [tumbler] and bottom 9-pin connector is for the bottom basket [tumbler]). If voltage is present,
replace the computer.
5. If the above steps were performed correctly , the problem could be a bad wire(s) or termination(s), from the
24 volt transformer through the I/O J4 (top basket [tumbler]) or J3 (bottom basket [tumbler]) connectors,
or to the main and lint drawer switches.
G . “dSFL” Condition
When the display reads “dSFL” it is an indication that there is a fault in the microprocessor’s heat sensing circuit.
This circuit includes the microprocessor controller (computer), the temperature sensor, or the wires or connectors
leading to and from these two points.
1. Check to see if the 1/8-amp fuse located on the computer is blown. T o verify, check with an ohm meter . If
no continuity, replace with ADC P/N: 136048 fuse. If fuse repeatedly blows out, refer to Step #4.
2. Replace the temperature sensor (ADC P/N: 880111).
3. Discontinue power to the dryer. Disconnect the 9-pin connector from the computer top basket (tumbler)
(top connector) or bottom basket (tumbler) (bottom connector). The temperature sensor is wired into pins
7 and 8 of that 9-pin connector. Check for continuity on each wire from the 9-pin connector to the
temperature sensor connector above the lint screen. If there is no continuity on either one of these two
wires, the problem is a bad wire or termination from the computer to the temperature sensor bracket.
4. If the computer fuse repeatedly blows, there is a short in one of the sensor wires.
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DATA LABEL INFORMA TION
A. DATA LABEL
Contact American Dryer Corporation
SECTION V
When contacting American Dryer Corporation, certain information is required to insure proper service/parts
information from ADC. This information is on the data label located on the inside of the control door. When
contacting ADC, please have the
model number and serial number available.
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THE DATA LABEL
1. MODEL NUMBER
The model number is an ADC number, which describes the size of the dryer and the
type of heat (gas, electric, or steam).
2. SERIAL NUMBER
The serial number allows ADC to gather information on your particular dryer.
3. MANUFACTURING CODE NUMBER
The manufacturing code number is a number issued by ADC, which describes ALL
possible options on your particular model.
4. TYPE OF HEAT
This describes the type of heat for your particular dryer: gas (either natural gas or
liquid propane [L.P.] gas),electric, or steam.
5. HEAT INPUT (for GAS DRYERS)
This describes the heat input in British Thermal Units per Hour (Btu/hr).
6. ORIFICE SIZE (for GAS DRYERS)
Gives the number drill size used.
7. ELECTRIC SERVICE
This describes the electric service for your particular model.
8. GAS MANIFOLD PRESSURE (for GAS DRYERS)
This describes the manifold pressure taken at the gas valve tap.
9. APPLICABLE APPROVAL SEAL(S)
I.E., Canadian Standards Association International.
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B. TESTING AND ADJUSTING GAS PRESSURE
There are two (2) types of devices commonly used to measure water column
pressure. They are spring/mechanical-type gauge and manometer . The spring/
mechanical-type gauge
not always accurate. A manometer is simply a glass or transparent plastic tube
with a scale in inches. When filled with water and pressure applied, the water
in the tube rises showing the exact water column pressure.
NOTE: Manometers are available from the factory by ordering ADC
Part No. 122804.
1. To Test Gas Water Column Pressure:
a. Connect water column test gauge connection to gas valve pressure
tap (1/8” N.P.T .). This pressure tap is located on the outlet (manifold)
side of the valve.
b. Start dryer . W ith burner on, the correct water column reading in inches
would be:
Natural Gas..................................... 3.5 Inches (8.7 mb) water column.
is not recommended, because it is easily damaged and
Liquid Propane (L.P.) Gas .............. 10.5 Inches (26.1 mb) water column.
2. To Adjust Water Column (W.C.) Pressure (natural gas only , liquid propane [L.P.] gas must be regulated at
source):
a. Remove the slotted vent cap on the top of the valve.
b. Turn the slotted adjustment screw located on the top of the valve next to the terminals. T urn clockwise
(CW) to increase manifold pressure and counterclockwise (CCW) to decrease.
NOTE: If correct water column pressure cannot be achieved, problems may be due to an undersized
gas supply line, a faulty or underrated gas meter, etc.
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C. L.E.D. DISPLAY CODES
A Automatic Cycle (Slope Program Factor)
ACOn Accumulative Coin
Adrt Maximum Auto Dryness Time
AFAt Amount for Additional Time
AGt Active Anti-Wrinkle Guard Time
AtIn Accumulative T ime
AtSt Amount to Start
AUtO Automatic Mode (Patent No. 4,827,627)
b Automatic Cycle (Heat Loss [offset] Factor)
bCLO Bad Coin Lockout
bCrS Bad Coin Reset
bUZ Buzzer (Tone)
CEL Degree in Celsius
CLCC Clear Left Coin Count
COIn Coin Mode
CrCC Clear Right Coin Count
donE Drying and Cooling Cycles Complete or Dryer is in Anti-Wrinkle Cycle
dOOr Door Circuit is Open
dSFL Dryer Sensor Circuit Failure
FAr Degree in Fahrenheit
FILL No Cycle in Progress
FLS Flash Display Active
FrEE Free Dry Mode
GdLY Anti-W rinkle Delay Time
Gont Anti-Wrinkle On Time
Grd Anti-W rinkle Program Active
HICd High Cool Down
Hot Overheating Condition
LCC Left Coin Count
LCdE Left Coin Denomination
LOCd Low Cool Down
nbUZ No Buzzer (Tone)
nFLS No Flash Display
nGrd No Anti-Wrinkle
nSEn No Rotational Sensor Selected
PdrY Percent Dry
PL Program Location
PLOC Program Location Automatic Review
PPCd Permanent Press Cool Down
PP Permanent Press
PUSH Amount to Start has been Inserted
Make Temperature Selection
rCC Right Coin Count
rCdE Right Coin Denomination
SEFL Rotational Sensor Circuit Failure
SEn Rotational Sensor Selected
tFAS Time For Amount to Start
tInE Timed Mode
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SECTION VI
PHASE 5 DUAL MICROPROCESSOR CONTROLLER (DMC)
SYSTEM DIAGNOSTICS
ALL major circuits, including door, lint drawer , microprocessor temperature sensor , heat and motor circuits are
monitored. The Phase 5 DMC computer will inform the user, via the light emitting diode (L.E.D.) display and at
the outputs of each relay (and door switch circuit) to easily identify failures.
A. DIAGNOSTIC (L.E.D. DISPLAY) FAILURE CODES
1. “dOOr” - indicates door or lint drawer switch circuit is open.
a. Keyboard (touch pad) entry was made while main door is open or
b. There is a fault in the door switch circuit (external of the Phase 5 DMC computer).
2. “dSFL” - indicates a fault in the microprocessor temperature sensor circuit.
a. If a fault is detected in the microprocessor heat sensor circuit, the L.E.D. display will read “dSFL” and
the buzzer (tone) will sound for approximately 5 seconds every 30 seconds until...
1) problem is corrected or
2) power to the dryer is discontinued...and the problem is then corrected.
IMPORTANT: The Phase 5 DMC computer has its own internal heat sensing circuit fuse protection
located on the back side of the Phase 5 DMC computer. If a “dSFL” condition
occurs, check to see if this fuse has blown. If it has, DO NOT replace the entire
microprocessor controller (computer). Replace only the fuse and do so only with a
1/8-amp (Slo-Blo) fuse only .
NOTE: Once the Phase 5 DMC computer detects a problem in the heat circuit, it updates every
30-seconds, so if the problem was a loose connection in this circuit which corrected itself, the
“dSFL” condition would automatically be cancelled.
3. “SEFL”
a. Indicates rotational sensor circuit failure, meaning that there is a fault somewhere in the basket (tumbler)
rotation detection circuit that the Phase 5 DMC computer program related to this circuit (PL01) is set
incorrectly in the active mode (“SEn”) where the dryer is not equipped with the optional rotation sensor
and should be set in the inactive mode (“nSEn”).
NOTE: If the dryer is equipped with the rotational sensor and the display reads “SEFL,” reset by
closing and opening the Program Switch (PS). Restart the dryer and if the “SEFL” code
appears again, investigate further.
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4. “Hot”
a. Indicates a possible overheating condition. The Phase 5 Dual Microprocessor Controller (DMC) computer
monitors the temperature in the dryer at
temperature in the dryer has exceeded 170º F (77º C), it will disable
down), the tone (buzzer) will sound for approximately 5-seconds and the display will read “Hot.” The
light emitting diode (L.E.D.) display will continue to read “Hot” until the temperature sensed has dropped
to 170º F (77º C) or lower and the Phase 5 DMC computer is manually reset by closing and opening the
Program Switch (PS).
ALL times. If the Phase 5 DMC computer detects that the
ALL the outputs (shut the dryer
B. L.E.D. DISPLAY INDICATORS (DOTS)
The L.E.D. indicator dots located at the top portion of the display (refer to the illustration on page 44) indicate
the various microprocessor controller (computer) output functions while a cycle is in progress. These dots DO
NOT necessarily mean that the outputs are functioning. They are only indicating that the function (output)
should be active (on).
1. Heat Circuit Indicator - This indicator dot is on whenever the Phase 5 DMC computer is calling for the
heating circuit to be active (on).
2. Motor Circuit Indicator -This indicator dot is on whenever a cycle is in progress.
C. PHASE 5 DMC COMPUTER RELAY OUTPUT L.E.D. INDICATORS
There are six (6) L.E.D. indicators (red lights) located on the back side area of the Phase 5 DMC computer
(refer to the illustration on page 47), which are identified or labeled “U” (upper) and “L” (lower) for the
appropriate circuit (i.e. door, motor, or heat). These L.E.D.s indicate that the outputs of the Phase 5 DMC
computer, or in the case of the door/lint drawer circuit, the inputs are functioning.
1. “dOOr” L.E.D. Indicators
a. Should be on at ALL times (even if dryer is not running) unless the main door or lint drawer is open or
there is a problem (open circuit) in either of these circuits.
NOTE: If the dryer is started (the display L.E.D. indicator dots are on) and there are no outputs (heat
and/or motor outputs L.E.D.s are off) and the appropriate “dOOr” input L.E.D. is on, the fault
is in the Phase 5 DMC computer itself.
NOTE: If the failure was elsewhere, (i.e. dryer’s door/lint drawer circuit) the display would read
“dOOr” if a keyboard (touch pad) entry was attempted. If the display L.E.D. indicators are
on, and the door L.E.D. input and motor/heat output L.E.D.s are on, and yet the motor and/or
heat is not active (on); then the problem is not the door switch circuit or the Phase 5 DMC
computer, the problem is elsewhere in the dryer .
46
Page 51
2. “ HEAT” Output light emitting diode (L.E.D.) Indicator
a. If the dryer is started and there is no heat, yet the Phase 5 Dual Microprocessor Controller (DMC)
computer display heat circuit indicator dot is on, but the “HEA T” output L.E.D. indicator is of f, then the
fault is in the Phase 5 DMC computer itself. If both the heat indicator dot and the “HEAT” output
L.E.D. indicator dots are on, then the problem is elsewhere (i.e., external of the Phase 5 DMC computer).
3. “ MOTOR” Output L.E.D. Indicator
a. If the dryer is started and the motor is not operating, yet the Phase 5 DMC computer display motor
circuit indicator dot and “dOOr” input L.E.D. indicator are on, but the motor output L.E.D. indicator is
off; then the fault is in the Phase 5 DMC computer itself. If the motor
“MOTOR” output L.E.D. indicator is on, then the problem is elsewhere (i.e., external of the Phase 5
DMC computer).
is not operating and the
D. PHASE 5 DMC COMPUTER INPUT/OUTPUT L.E.D. INDICATORS
47
Page 52
SECTION VII
PHASE 5 DUAL MICROPROCESSOR CONTROLLER (DMC)
PROGRAMMING LIMITS
Phase 5 Dual Microprocessor Controller Programming Limits
Program
Parameter Range Increments
Location
PL02 “PdrY” Auto Cycle pe rcentage of dryness 90% to 100% 1
PL03 “HI” Drying Temperature
PL04 “HI” Cool Down Temperature
“
HI” Cool Do wn Time
PL05 “LO” Drying Temp erature
PL06 “LO” Cool Down Temperature
“LO” Cool Down Time
PL07 “PP” Dr y in g T e mp e r atu r e
PL08 “PP” Cool Down Temperature
“PP” Cool Down Time
110º
F to 150º F
C to 66º C
43º
F to 100º F
70º
C to 38º C
21º
0 to 9
110º
F to 150º F
C to 66º C
43º
70º F to 10 0º
21º
C to 38º C
0 to 9
F to 150º F
110º
C to 66º C
43º
70º
F to 100º F
C to 38º C
21º
0 to 9
F
5 degrees
1 degree
5 degrees
1 degree
1 minute
5 degrees
1 degree
5 degrees
1 degree
1 minute
5 degrees
1 degree
5 degrees
1 degree
1 minute
PL09 “LCdE” Left Coin Denomination 1 to 9999 1
PL10 “rCdE” Right Coin Denomination 1 to 9999 1
PL11
PL12
PL13
PL14
PL15
PL16
PL17
“
tFAS” Time For Amount To Start
“
AtSt” Amount To Start
“
AFAt” Amount For Additional Time
“
Adrt” Maximu m Au to Dry T ime
“
GdLY” Anti-Wrinkle Guard Delay Time
“
Gont” Anti-Wrinkle Guard On Time
“
AGt” Anti-Wrinkle Guard Active Time
“
A” Auto Cycle Factor
”B” Auto Cycle Factor
1 to 99 1 minute
1 to 9999 1
1 to 9999 1
1 to 99 1 minute
1 to 9
10 to 99
1 to 99 1 minute
1 to 9
1 to 99
48
1 minute
1 second
1
1
Page 53
ADC 450303 1-04/04/94-10 2-06/03/94-100 3*11/21/94-200
4 - 05/08/95-50 5* 10/30/95-200 6*12/03/96-200
7 - 01/30/98-50 8* 06/05/98-50 9-09/10/98-100
10 - 08/12/99-100 11 - 06/08/00-100 12 - 09/26/00-75
13 - 09/07/01-100 14 - 04/11/03-10 15* 06/13/03-15
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