Unimac UDE30FGS171TW08 Parts Diagram

Homestyle

Dryers

Refer to Page 3 for Model Numbers

Service

DRY684C

D715I

DRY688C

www.comlaundry.com

Part No. 512261

May 2005

Safety Information

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

a DANGER

Danger indicates an imminently hazardous situation that, if not avoided, will cause severe personal injury or death.

a WARNING

Warning indicates a hazardous situation that, if not avoided, could cause severe personal injury or death.

a CAUTION

Caution indicates a hazardous situation that, if not avoided, may cause minor or moderate personal injury or property damage.

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

IMPORTANT

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

NOTE

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

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

WARNING

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

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

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

W284

512261 3

Section 1 Safety Information

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

WARNING

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

WARNING

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W007

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

W286

NOTE: The WARNINGS and IMPORTANT INSTRUCTIONS appearing in this manual are not meant to cover all possible conditions and situations that may occur. Common sense, caution and care must be exercised when installing, maintaining or operating the machine.

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

Locating an Authorized Servicer

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

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

4 512261

Section 2

Introduction

Customer Service

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

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

Nameplate Location

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

Nameplate

D412PE1A

512261 5

Section 2 Introduction

Model Identification

Information in this manual is applicable to these dryers:

FES17A*F FES17A*F1500 FEU17A*F

KES17A*F KES17A*F1500

KGS17A*F FEZ17A*F FGS17A*F FGU17A*F FGZ17A*F

* Add Letter To Designate Color. L - Almond Q - Bisque W - White

LES17A*F LES17A*F1500 LES37A*F LGS17A*F LGS37A*F

6 512261

How Your Dryer Works

Lint

Filter

Section 2 Introduction

Cylinder

Heater

Duct

Blower

Fan

DRY1819S

The dryer uses heated air to dry loads of laundry. When the motor is started, the exhaust fan pulls room temperature air in through louvers at the rear of the dryer and over the heat source (burner flame for gas and heating element for electric). The heated air moves through the heater duct and into the cylinder, where it circulates through the wet load. The air then passes through the lint filter, air duct, and exhaust fan, where it is vented to the outdoors.

512261 7

Section 2 Introduction

Notes

8 512261

Section 3

Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

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

1. DRYER MOTOR DOES NOT RUN

POSSIBLE CAUSE TO CORRECT

Electrical power off, fuse blown, or power cord not plugged in.

• Check laundry room for blown or loose fuse(s), or open circuit breaker(s). The dryer itself does not have an electrical fuse.

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• Check both fuses for electric models.

Loading door not closed. • Close door. Inoperative door switch. • Test switch and replace if inoperative. Timer improperly set. • Reset timer or try another cycle. Inoperative timer. • Test timer and replace if inoperative. Motor starting functions inoperative.

Does not start, or motor just hums. Motor is dead, will not run. • Refer to Paragraph 64 to check motor switch, motor

Motor overload protector has cycled. • Wait two or three minutes for overload protector to reset.

Motor centrifugal switch sticky or plugged with lint.

Bind in motor bearing. • Remove belt and determine if motor shaft will spin.

Loose motor wire harness connection block. • Firmly press connection block onto motor switch. Broken, loose, or incorrect wiring. • Refer to wiring diagram. Power cord is miswired. • Refer to wiring diagram for the correct wiring.

• Refer to Paragraph 64 to check motor switch and motor windings.

windings, and main windings.

If protector cycles repeatedly, refer to Paragraph 2.

• Remove dust or lint and spray with a cleaner and lubricant.

• Replace motor if shaft is locked up.

512261 9

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

2. DRYER STOPS IN CYCLE; QUITS AFTER THE FIRST FEW LOADS; HAS A BURNING SMELL; CYCLES ON MOTOR THERMAL PROTECTOR

POSSIBLE CAUSE TO CORRECT

Incorrect Voltage. • Refer to nameplate in door well for correct voltage.

• Refer to Installation Instructions (supplied with dryer)

for electrical requirements.

Clothes load too large. • Remove part of load. A normal washer load is a normal

dryer load. Maximum load: dryer cylinder one half full of wet clothes.

Clothes cylinder is binding. • Check cylinder for binding and “out of round” condition.

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• Check front and rear bulkheads for warping.

• Check support rollers for binding.

• Check cylinder seals and glides for wear or damage.

• Check for clothes lodged between cylinder baffle and bulkhead.

Broken, loose or incorrect wiring. • Refer to wiring diagram. Motor switch functions inoperative.

• Refer to Paragraph 64 to check switch and windings.

Short in motor winding. Clothes item caught in fan. • Check fan for obstruction.

10 512261

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

3. DRYER MOTOR RUNS BUT CYLINDER DOES NOT TURN

POSSIBLE CAUSE TO CORRECT

Motor drive pulley loose. • Tighten pulley. Belt not installed on pulley. • Install belt. Refer to Figure 25. Broken cylinder belt. • Replace belt. Clothes cylinder is binding. • Check cylinder for binding and “out of round” condition.

• Check front and rear bulkheads for warping.

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• Check cylinder rollers for binding.

• Check cylinder seals and glides for wear or damage. Broken, weak or disconnected idler lever spring. • Replace or reconnect spring. Refer to Figure 26. Belt routed on wrong side of idler lever. • Reroute belt. Refer to Figure 25. Oil on cylinder. • Wipe oil from cylinder. Belt is “inside out.” • Reinstall belt with ribbed surface against cylinder. Idler lever is binding. • Add grease between idler lever and motor mount.

• Replace idler lever and bolt, if needed. Dryer is overloaded. • Remove some laundry from dryer. Wrong motor. • Refer to parts manual for correct motor part number. Wrong belt used on dryer. • Check belt part number against correct part number in the

parts manual.

• Replace belt if needed. Bent idler lever. • Replace idler lever.

4. DRYER MOTOR DOES NOT STOP

POSSIBLE CAUSE TO CORRECT

Incorrect wiring to motor switch. • Refer to wiring diagram. Motor centrifugal switch sticky or plugged with

• Remove dust or lint and spray with a cleaner and lubricant. lint.

Inoperative door switch. • Test switch and replace if inoperative. Inoperative timer. • Test timer and replace if inoperative.

512261 11

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

5. DRYER RUNS ONLY WHEN DOOR IS OPEN

POSSIBLE CAUSE TO CORRECT

Door switch miswired. • Rewire door switch. Refer to appropriate wiring diagram.

6. DRYER HEATING ASSEMBLY DOES NOT HEAT OR BURNER DOES NOT IGNITE

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements. Use of plastic or thin foil exhaust duct. • Replace with rigid or semi-rigid metal exhaust duct. Blown house fuse or tripped circuit breaker. • Check fuses or circuit breakers. Fabric selector switch set at NO HEAT, or

• Reset or test switch and replace if inoperative.

inoperative. Timer improperly set (set in a cool-down period, or

• Reset timer. Try another cycle.

a no heat cycle). Inoperative limit thermostat. • Test thermostat and replace if inoperative. Inoperative drive motor switch. • Test switch and replace if inoperative. Electric Models: Inoperative heater assembly. • Test heater assembly and replace if cold Ohms do not read

between 9 and 10.5 Ohms. Electric Models: Inoperative thermal fuse. • Test thermal fuse and replace if inoperative. Gas Models: Insufficient gas supply. • Check gas shut-off valve in dryer and main gas line valve.

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• Open partially closed gas shut-off valve, or correct low gas pressure.

Gas Models: Inoperative gas valve coils. • Test coils and replace if inoperative. Refer to

Paragraph 68.

Gas Models: Inoperative sensor. • Test sensor and replace if inoperative. Refer to

Paragraph 43, step e.

Gas Models: Inoperative igniter. • Test igniter and replace if inoperative. Refer to

Paragraph 70.

Gas Models: Harness not properly connected to gas controls.

• Check harness connections to gas valve coils, sensor and main harness.

• Reconnect as required.

Gas Models: Restricted gas flow in gas orifice. • Clean out gas orifice. Inoperative cycling thermostat. • Test thermostat and replace if inoperative. Inoperative timer. • Test timer and replace if inoperative. Broken, loose, or incorrect wiring. • Refer to wiring diagram.

12 512261

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

7. IGNITER DOES NOT GLOW (Gas Supply Sufficient) – GAS DRYER MODELS

POSSIBLE CAUSE TO CORRECT

No power to power leads on valve. • Check thermostats, motor switch, and wiring. Sensor failed with contacts open. • Replace sensor. Igniter broken or open. • Replace igniter.

8. BURNER IGNITES AND GOES OUT REPEATEDLY – GAS DRYER MODELS

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. Weather hood flapper restricted.

Burner heat not holding sensor contacts open. • Replace sensor, or correct gas supply problem. Insufficient gas supply. • Check gas supply and pressure.

•Refer to Installation Instructions (supplied with dryer)

for exhaust requirements.

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• Make sure gas shut-off valve is turned on. Cracked igniter. • Replace igniter and bracket. Inoperative or intermittent gas valve coils. • Check coils and replace appropriate coils. Refer to

Paragraph 68.

9. IGNITER GLOWS BUT BURNER DOES NOT IGNITE – GAS DRYER MODELS

POSSIBLE CAUSE TO CORRECT

Sensor failed in closed position. • Replace sensor. Open secondary coil or holding coil. • Replace coils. Refer to Paragraph 68. Insufficient gas supply. • Check gas supply and pressure.

• Make sure gas shut-off valve is turned on. Igniter and bracket installed improperly on burner

tube assembly.

• Loosen screw and properly position igniter and bracket on

burner tube assembly.

Sensor installed improperly on burner housing. • Loosen screw and properly position the sensor on the

burner housing.

512261 13

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

10. DRYER HEATER ASSEMBLY OR BURNER SHUTS OFF PREMATURELY

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. Weather hood flapper restricted.

•Refer to Installation Instructions (supplied with dryer)

for exhaust requirements.

Gas Models: Insufficient gas supply. • Check main gas line shut-off valve.

• Open partially closed gas shut-off valve, or correct low pressure.

Gas Models: Dryer not properly equipped for type of gas used.

• Refer to “Gas Burner Conversion Procedures” supplied in gas burner conversion kit.

Gas Models: Improperly adjusted burner flame. • Adjust flame. Refer to Paragraph 61. Cycling off on limit thermostat. • Momentarily connect a jumper wire across thermostat

terminals. If heater element heats or burner ignites when jumper wire is connected, refer to Paragraph 11.

Gas models: Sensor contact closing • Replace sensor (Paragraph 43, step e) or adjust burner

flame. Refer to Paragraph 61.

Inoperative cycling thermostat. • Test thermostat and replace if inoperative. Inoperative timer. • Test timer and replace if inoperative. Broken, loose, or incorrect wiring. • Refer to wiring diagram.

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11. DRYER HEATER ASSEMBLY OR BURNER REPEATEDLY CYCLES OFF ON LIMIT THERMOSTAT

POSSIBLE CAUSE TO CORRECT

External exhaust system longer or providing greater restriction than recommended.

• Refer to Installation Instructions (supplied with dryer)

for exhaust system requirements. Use of plastic or thin foil exhaust duct. • Replace with rigid or semi-rigid metal exhaust duct. Clogged lint filter. • Clean lint filter. Lint in internal dryer ductwork. • Disassemble dryer ductwork and clean. Lint or other obstruction in external exhaust system. • Disassemble and clean exhaust system. Hinged damper on exhaust system weather hood

• Free hinged damper or replace weather hood.

not free to open. Limit thermostat cycling at too low a temperature. • Replace thermostat. Refer to Paragraph 45. Air leak around loading door. (Door not sealing due

• Replace seal or catch.

to damaged seal or inoperative door catch.) Air leak at blower seal. • Check and replace seal if necessary. Air leak at cylinder seal(s). • Check and replace seal(s) if necessary.

14 512261

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

12. DRYER HEATER ASSEMBLY OR BURNER DOES NOT SHUT OFF

POSSIBLE CAUSE TO CORRECT

Improper motor switch. (Control must be in a heat setting.)

Motor does not stop. • Refer to Paragraph 4. Incorrect wiring. • Refer to wiring diagram. Heater assembly shorted. • Remove heater assembly and check for short.

• Test switch and replace if inoperative.

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13. CLOTHES DO NOT DRY IN DRYER

POSSIBLE CAUSE TO CORRECT

Heater assembly does not heat or burner does not

• Refer to Paragraph 6.

ignite. Too much water in articles being dried. • Remove excess water. Laundry load too large. • Remove part of load. A normal washer load is a normal

dryer load. Maximum load: Dryer cylinder one half full of

wet clothes. Laundry load too small. • Add one or two bath towels to load. Excessive lint on lint filter. • Clean lint filter. Fabric selector switch or timer set on NO HEAT or

• Test and replace switch or timer if inoperative.

inoperative. Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements. Heater assembly or burner shuts off prematurely. • Refer to Paragraph 10. Gas Models: Gas line pressure too high or too low. • If Natural Gas line pressure to dryer exceeds 8 inch water

column pressure, or is lower than 5 inch water column, ask

Gas Company to correct. Improper belt installation (Low RPM). • Check for proper installation. Refer to Figure 25.

512261 15

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

14. TIMER DOES NOT ADVANCE IN AUTOMATIC CYCLE

POSSIBLE CAUSE TO CORRECT

Inoperative cycling thermostat. • Test thermostat and replace if inoperative. Inoperative resistor (Electric Models). • Test resistor and replace if inoperative. Heater assembly does not heat or burner does not

• Refer to Paragraph 6.

ignite. Heater assembly or burner cycles off prematurely. • Refer to Paragraph 10. Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements. Drying large load. • Timer will not advance until the load is almost dry. Broken, loose or incorrect wiring. • Refer to wiring diagram. Timer motor is inoperative. • Select a drying cycle and activate start switch.

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• Rotate timer knob until signal sounds.

• Release timer knob.

• Signal should stop within ten minutes. If not, replace timer.

Inoperative seals (air leaks). • Check and replace any inoperative seals in the following

areas:

1. Seal between loading door and front panel.

2. Seal between front panel and front bulkhead.

3. Seal between blower cover and air duct.

4. Seal between cylinder and front or rear bulkhead.

5. Gap between air duct and filter mounting.

16 512261

Section 3 Troubleshooting

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

15. CLOTHES ARE TOO HOT WHEN REMOVED FROM DRYER

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements.

Clothes are removed from dryer before cycle has completed.

• Allow the dryer to complete the cycle through the cooldown to the OFF position.

Inoperative cycling thermostat. • Test cycling thermostat and replace if inoperative. Inoperative timer (not allowing cool-down). • Test timer and replace if inoperative. Inoperative seals (air leaks). • Check and replace any inoperative seals in the following

areas:

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1. Seal between loading door and front panel.

2. Seal between front panel and front bulkhead.

3. Seal between blower cover and air duct.

4. Seal between cylinder and front or rear bulkhead.

5. Gap between air duct and filter mounting.

16. EXCESSIVE CHATTERING OR VIBRATING NOISE IN DRYER

POSSIBLE CAUSE TO CORRECT

Inoperative idler spring. • Remove lower access panel. Set dryer to normal cycle and

allow it to heat to operating temperature. If the belt vibrates as it rotates around the cylinder, the idler lever is making the noise. Replace the idler spring. Refer to Figure 26.

17. EXCESSIVE HUMMING OR WHISTLING NOISE IN DRYER

POSSIBLE CAUSE TO CORRECT

Inoperative blower housing. • If the abnormal operating noise is loudest at the vent exit,

the problem is originating from the blower housing. Replace the current housing and cover. Refer to Figure 27.

512261 17

Section 3 Troubleshooting

Notes

18 512261

Section 4

Grounding

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

18. GROUND WIRES FROM POWER CORD TO REAR BULKHEAD AND FROM REAR BULKHEAD TO CONTROL CABINET Check Wall Receptacle Polarity (Gas Dryer Models Only)

Refer to Figure 1.

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L1

115±12

V.A.C.

Dryer

Power Cord

115±12

V.A.C.

Ground

0

V.A.C.

Ground

Wires

Neutral

Side

D354SE3A

Figure 1

512261 19

Section 4 Grounding

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

19. GROUND WIRE FROM TERMINAL BLOCK TO REAR BULKHEAD AND FROM REAR BULKHEAD TO CONTROL CABINET (Electric Dryer Models Only)

Refer to Figure 2.

Ground

Wires

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H006GE3A

Figure 2

20 512261

Section 4 Grounding

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

20. STACKED DRYER GROUND CONNECTIONS

Refer to Figure 3.

Terminal Block and Rear Bulkhead to Control Cabinet

1

Motor Terminal Block to Base

2

Motor to Base

3

Ground to Control Panel Assembly

4

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Terminal Block and Rear Bulkhead to Control Cabinet to Control Panel

5

FRONT CONTROL GROUND CONNECTIONS

Refer to Figure 3.

Terminal Block and Rear Bulkhead to Control Cabinet

1

Motor Terminal Block to Base

2

Motor to Base

3

REAR CONTROL GROUND CONNECTIONS

Refer to Figure 3.

Terminal Block and Rear Bulkhead to Control Panel

1

Motor Terminal Block to Base

2

Motor to Base

3

512261 21

Section 4 Grounding

1

2

4

5

3

SWD4G

Stacked Dryer

1

3

Front Control Dryer

DRY6G

1

2

DRY6G

2

3

DRY7G

Rear Control Dryer

Figure 3

22 512261

Section 5

Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

IMPORTANT: When reference is made to directions (right or left) in this manual, it is from operator’s position facing front of machine.

21. TO REMOVE THE UPPER DRYER

Refer to Figure 4.

7/16

Screw

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IMPORTANT: Two people are required to perform this task.

a. Remove all electrical, gas and venting

connections to upper dryer. b. Remove front access panel on upper dryer. c. Remove two 7/16 screws attaching upper dryer

to lower dryer. d. Remove control panel and disconnect molex

plug. e. Slide upper dryer forward, until leveling legs

slide into notch on security cabinet.

f. Lift upper dryer and place on level surface.

Control

Panel

Service

Door

Notches

DRY1818S

Figure 4

512261 23

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

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22. CONTROL HOOD ASSEMBLY (Rear Control Dryers)

Refer to Figure 5. a. Remove three screws holding control hood

assembly to control hood rear panel.

b. Rotate assembly forward to access inner

wiring.

c. Disconnect wiring from inner components and

carefully remove components from control hood assembly.

NOTE: Refer to wiring diagram when rewiring component parts.

d. Rotate control hood assembly forward and lift

to free assembly from hold-down clips.

23. CONTROL HOOD END CAPS (Rear Control Dryers)

Refer to Figure 5. a. Remove three screws holding control hood

assembly to control hood rear panel.

b. Rotate assembly forward to access inner

wiring.

c. Disconnect wiring from inner components and

carefully remove components from control hood assembly.

NOTE: Refer to wiring diagram when rewiring component parts.

d. Remove two screws holding end cap to end of

support control panel.

e. Carefully pry end cap from support control

panel.

NOTE: To re-assemble, reverse the steps.

24. GRAPHIC PANEL (Rear Control Dryers)

Refer to Figure 5. a. Carefully pull switch knobs and timer knob off

shafts.

b. Remove three screws holding control hood

assembly to control hood rear panel.

c. Rotate assembly forward to access inner

wiring.

d. Disconnect wiring from inner components and

carefully remove components from control hood assembly.

NOTE: Refer to wiring diagram when rewiring component parts.

e. Remove three screws holding top cover to

support control panel. Rotate top cover forward.

f. Remove screws holding end caps to support

control panel and pry off caps.

g. With graphic panel facing forward, rotate

control hood assembly forward to access tabs holding graphic panel.

h. Bend graphic panel tabs straight out toward rear

of hood and pull panel away from support control panel.

NOTE: To re-assemble, reverse the steps.

25. TIMER (Rear Control Dryers)

Refer to Figure 5. a. Pull timer knob off timer shaft. b. Remove the three screws holding the control

assembly to the control hood rear panel.

c. Rotate assembly forward to access inner

wiring.

d. Disconnect wiring from timer and carefully

remove timer from control hood assembly.

NOTE: Refer to wiring diagram when rewiring component parts.

e. Remove two screws holding timer to support

control panel.

24 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

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26. FABRIC SELECTOR SWITCH (Rear Control Dryers)

Refer to Figure 5. a. Pull fabric selector switch knob off shaft. b. Remove three screws holding control hood

assembly to control hood rear panel.

c. Rotate assembly forward to access inner

wiring.

d. Disconnect wiring from switch and carefully

remove switch from control hood assembly.

NOTE: Refer to wiring diagram when rewiring component parts.

e. Carefully lift locking tab holding fabric selector

switch to support control panel.

f. With locking tab lifted, rotate fabric selector

switch counterclockwise 1/4 turn and remove switch out rear of support control panel.

27. SIGNAL (Rear Control Dryers)

Refer to Figure 5. a. Carefully pull signal knob off shaft. b. Remove three screws holding control hood

assembly to control hood rear panel.

c. Rotate assembly forward to access inner

wiring.

d. Disconnect wires to the signal.

NOTE: Refer to wiring diagram when rewiring component parts.

e. With locking tab lifted, rotate signal

counterclockwise 1/4 turn and remove signal out rear of support control panel.

28. EXTEND TUMBLE SWITCH (Rear Control Dryers)

Refer to Figure 5. a. Remove three screws holding control hood

assembly to control hood rear panel.

b. Rotate assembly forward to access inner

wiring.

c. Disconnect wires from switch.

NOTE: Refer to wiring diagram when rewiring component parts.

d. Remove switch through front of panel.

512261 25

Section 5 Service Procedures

Screws

Top

Cover

Fabric

Selector

Switch Knob

Assembly

Signal

Switch

Knob

Assembly

Extend Tumbl e Rocker Switch

Left

End Cap

Screw

Timer Knob

Assembly

Screw

Graphic

Panel

Fabric Selector

Switch

Signal

Timer

Screw

Right

End Cap

Screw

Control Hood

Rear Panel

Support

Control Panel

DRY161P

Cabinet

Top

Figure 5

GRAPHIC PANEL, CONTROL HOOD AND CONTROLS – REAR CONTROL DRYERS

26 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

29. CONTROL PANEL AND CONTROLS (Front Control and Stacked Dryers)

Refer to Figures 6 and 7. a. Remove timer knob(s) from timer shaft(s). b. Pull temperature switch knob(s) off

temperature switch shaft(s). c. Pull signal knob(s) off signal shaft. d. Remove screws holding control panel to

control cabinet. Refer to Figures 6 and 7.

Remove panel as far as wires will permit. e. Disconnect wires from signal(s). Remove

signal(s) from control panel.

f. Disconnect wires from rocker switch (extend

tumble), if applicable. Remove switch through

front of control panel. g. Disconnect wires from temperature switch

terminals. Remove switch from control panel.

W001R1

NOTE: DO NOT pull on wires. Instead, unplug by pulling on disconnect blocks. Use a pliers, if necessary.

NOTE: Refer to wiring diagram when rewiring switches.

h. Remove wire harness and wires from timer(s).

Remove timer(s) from control panel.

i. Remove control panel overlay from control

panel.

j. Remove control panel from unit.

512261 27

Section 5 Service Procedures

Screw

Left Control Cabinet

Top

Panel

Bolt

Screw

Control

Cabinet

Rear

Screw

Nut

Graphic Overlay

Screw

Fabric

Selector

Switch

Knob

Assembly

Signal

Switch

Knob

Assembly

Extend Tumb le Rocker Switch

Timer

Assembly

Knob

Fabric

Selector

Switch

Screw

Signal

Switch

Expansion

Clip

Control

Panel

Assembly

Timer

Control Cabinet Bottom

Right Control Cabinet

DRY1828S

Figure 6

CONTROL PANEL AND CONTROLS – FRONT CONTROL DRYERS

28 512261

Section 5 Service Procedures

Screw

Graphic Overlay

Screw

Timer

Knob

Assembly

Control

Panel

Assembly

Nut

Screw

Timer

Left Control Cabinet

Expansion

Clip

Rear

Control

Cabinet

Screw

Right

Control

Cabinet

Fabric

Selector

Switch

Timer

Control

Cabinet

Bottom

Fabric Selector

Switch Knob

Assembly

Expansion

Screw

Timer

Clip

DRY1829S

Knob

Assembly

Figure 7

CONTROL PANEL AND CONTROLS – STACKED DRYERS

512261 29

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

30. ACCESS PANEL

Refer to Figure 8. a. While supporting access panel, remove two

screws from bottom edge of panel.

b. Gently lower access panel to disengage panel

locators from bottom edge of front panel.

c. Remove access panel.

Access

Panel

Attaching

Screws

D302SE3B

f. Remove two screws holding cabinet top to front

flange of cabinet. Refer to Figure 10.

g. Lift cabinet top to a vertical position by hinging

it on the rear hold-down brackets. Refer to Figure 11.

NOTE: While servicing, cabinet top may be raised and hinged on the rear hold-down brackets or supported against wall behind dryer.

Front Panel

Attaching

Screws

Figure 8

31. CABINET TOP

DRY1817S

Figure 9

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower access panel to disengage panel

locators from bottom edge of access panel.

h. Rear Control Models:

Carefully withdraw wire harness through hole in cabinet top and lift the top off the hold-down brackets. Refer to Figure 11.

Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer cabinet. Refer to Figure 9.

d. Swing bottom of front panel away from dryer to

disengage hold-down clips and locators from cabinet top.

e. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

30 512261

Section 5 Service Procedures

Cabi

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

net Top

Hold-Down Screws

Figure 10

Cabinet

Top

D394S

Rear

Hold-Down

Brackets

D339S

Figure 11

512261 31

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

32. LINT FILTER

a. Open loading door and remove screw from end

of lint filter. Refer to Figure 12.

b. Lift lint filter out of air duct, paying close

attention to orientation.

IMPORTANT: When installing lint filter, be sure to install the filter with the words facing the front of the dryer. If filter is installed backwards, lint will accumulate in exhaust system, which can adversely affect dryer performance.

Lint Filter

Attaching

Screw

Hinge

Attaching

Screws

Loading Door

Attaching

W001R1

Screws

33. LOADING DOOR

a. Open loading door. b. Remove screws holding loading door to hinges.

Refer to Figure 12.

Lint

Filter

Front

Bulkhead

D306S

Figure 12

32 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

34. INNER AND OUTER DOOR PANELS AND DOOR PULL

a. Remove four screws holding door assembly to

hinges. Refer to Figure 12.

b. Remove remaining screws around the door

assembly and separate panels. Refer to Figure 13.

c. Remove wedge (located behind door pull) by

carefully prying up on center of wedge. Refer to Figure 13.

Door Strike

Screw

Door

Pull

Bracket

Outer Door

Panel

Wedge

Door

Strike

d. Remove door pull. Refer to Figure 13.

35. DOOR STRIKE

a. Open loading door. b. Remove screw holding door strike and bracket

to loading door and remove strike and bracket. Refer to Figure 13.

NOTE: You may have to loosen the two screws on end of door to allow for strike and bracket removal.

Door

Seal

Screw

Inner Door Panel

and Seal Assembly

Screw

Door Hinge

Front

Screws

Screw

Panel

D343P

Figure 13

512261 33

Section 5 Service Procedures

36. REVERSING DOOR PROCEDURE (Doors Without Windows Only) The dryer door is completely reversible. To reverse door proceed as follows:

1

Remove four hinge attaching screws.

4

D377S

2

Remove all nine screws.

5

3

B

A

D312S

D311S

Pull bottom of door liner out, then pull down, removing door liner from door panel.

6

B

D313S

Rotate door panel 180 degrees as shown.

7

D316S

Reinstall nine screws removed in Step 2.

D314S

Remove door strike from door liner and reinstall on opposite side.

8

D378S

Using a screwdriver, remove two door plugs, and reinstall on opposite side of door opening.

A

D315S

Insert liner under flange on bottom of door, then push top of door liner into place.

9

D382S

Reinstall four hinge attaching screws removed in Step 1.

Figure 14

34 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

37. DOOR SEAL

a. Remove inner door panel from outer door

panel. Refer to Paragraph 34.

b. Grasp either end of door seal at bottom of door

and remove seal from tabs on inner door panel by gently pulling on the seal. Refer to Figure 15.

Door Seal

Tab

NOTE: When replacing seal, be sure seal is not stretched or distorted. The tab in the seal should be installed in each slot of the inner door panel, shown in Figure 15. The split in the seal must be at the bottom of the door. Make sure that each tab of the seal is fully engaged into the slot.

Inner Door

Panel Slot

Bottom Of Door

Inner Door

Panel

Figure 15

512261 35

D335S

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

38. FRONT PANEL AND PANEL SEAL

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

e. Remove front panel seal from flange around

inside of door opening. Refer to Figure 17.

NOTE: Be sure seal is properly positioned when installing on front panel.

Door

Switch

Tabs

39. DOOR SWITCH

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding tabs on front panel

to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

e. Depress tabs on switch and push out of front

panel. Refer to Figure 16.

40. DOOR CATCH

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring

H183SE1A

switch.

e. Depress tabs on top and bottom of catch and

push out of front panel.

Figure 16

36 512261

Section 5 Service Procedures

Door

Catch

Screw

Locator

Sticker

Hinge

Hole

Plugs

Hold-Down

Clip

Door

Switch

Front Panel

Seal

Nameplate

Front Panel

Screw

Locator

Screw

Lower

Access

Panel

Screw

SWD648P

Figure 17

512261 37

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

41. DOOR HINGE

a. Open loading door and, while supporting door,

remove four screws holding door assembly to hinges. Refer to Figure 18.

b. Remove four screws holding hinges to front

panel. Refer to Figure 18.

42. HOLD-DOWN CLIPS AND LOCATORS

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower access panel to disengage panel

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom edge of front panel away from dryer far enough to disengage holddown clips and panel locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

Lint Filter

Attaching

Screw

Door

Hinges

Attaching

Screws

W001R1

Door

Lint

Filter

e. Compress hold-down clips and remove from

D306S

top of front panel. Refer to Figure 17.

f. Remove four screws holding four locators to

access panel or front panel. Refer to Figure 17.

38 512261

Figure 18

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

43. BURNER SYSTEM COMPONENTS (Gas Models)

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Complete Gas Valve Assembly.

(1) Close main gas shut-off valve, disconnect

igniter wires at disconnect blocks, sensor wires from sensor terminals, and wires

Heat

Shroud

Heater

Box

Attaching

Screws

from gas valve coils at the quick disconnect blocks. Refer to Figure 19.

(2) Disconnect gas shut-off valve from gas

valve at the union nut. Refer to Figure 19.

(3) Remove three screws holding valve and

mounting bracket to base. Refer to Figure 19.

(4) Lift gas valve and mounting bracket from

base. Refer to Figure 19.

NOTE: The holding and booster coil, and secondary coil can be replaced individually.

Screw

Burner

Housing

Sensor

Attaching

Screw

Burner

Tube

Screw

Igniter

Wires

Disconnect

Block

Secondary

Coil

Lead-In

Pipe

Sensor

Terminals

Tab

Shut-Off

Valve

(Shown in closed position)

Holding

And

Booster

Coil

Gas

Valve

Union

Nut

Nipple

D241SE3G

Figure 19

512261 39

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

d. Burner Tube, Igniter and Bracket

NOTE: Burner tube and igniter can be removed without removing gas valve and bracket.

(1) Remove one screw from right side of

burner housing holding burner tube in place. Refer to Figure 21.

(2) Gently move burner tube toward rear of

dryer to disengage tab from slot on left side of burner housing. Refer to Figure 19.

(3) Carefully rotate burner tube and igniter

counterclockwise so tab is at 8 o’clock position.

(4) Move air shutter end of burner tube slightly

to right and CAREFULLY remove burner tube and igniter assembly out through front of dryer.

Igniter and

Bracket

(5) Remove screw holding igniter and bracket

to burner tube and remove igniter and bracket. Refer to Figure 20.

IMPORTANT: Use care while removing igniter to avoid damage. The igniter is very fragile.

IMPORTANT: Handle igniter by grasping the white ceramic portion of bracket only. DO NOT handle silicon carbide portion of igniter with hands or allow it to be contaminated by oil, grease or other foreign material. Oil, grease and other impurities or hairline cracks will cause igniter to burn out.

e. Sensor

(1) Remove wires from sensor terminals. Refer

to Figure 19.

(2) Remove screw holding sensor to burner

housing. Refer to Figure 19.

Attaching

Screw

White

Ceramic

Portion

Burner

Tube

Tab

Burner

Tube

Air

Shutter

D242SE3A

Figure 20

40 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

44. BURNER HOUSING AND HEAT SHROUD (Gas Models)

a. While supporting access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower access panel to disengage locators

from bottom edge of front panel. Refer to Figure 17.

c. Disconnect igniter wires at disconnect blocks,

sensor wires from sensor terminals, and wires from gas valve coils at the quick disconnect blocks. Refer to Figure 19.

d. Remove screw from right side of burner

housing, while holding burner tube in place. Refer to Figure 21.

e. Gently move burner tube toward rear of dryer to

disengage tab from slot on left side of burner housing. Refer to Figure 19.

f. Carefully rotate burner tube and igniter

counterclockwise so tab is at 8 o’clock position.

g. Move air shutter end of burner tube slightly to

the right and CAREFULLY remove burner tube and igniter assembly out through front of dryer.

IMPORTANT: The igniter is very fragile. Be careful not to damage it during removal.

h. Remove screw holding burner housing to heat

shroud. Refer to Figure 19.

i. Remove screw holding front of burner housing

to dryer base and remove housing out through front of dryer. Refer to Figure 21.

j. Remove two screws holding heat shroud to

heater box and remove heat shroud out through front of dryer.

45. LIMIT THERMOSTAT

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Disconnect wires and remove screws holding

limit thermostat to burner housing (gas models) or element plate (electric models). Refer to Figure 21.

ELECTRIC MODELS GAS MODELS

Heater Wire

Connections

Limit

Thermostat

Thermal

Fuse

512261 41

Screw

Heater

Assembly

D243SE3A

Gas Valve Handle (Shown in Closed

Figure 21

Position)

Base

Burner Tube

Screw

Burner

Housing

Limit

Thermostat

Burner

Tube

Screw

D244SE3B

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

46. HEATER ASSEMBLY (Electric Models)

a. While supporting access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower access panel to disengage locators

from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding heater assembly to

heater box and remove heater assembly out through front of dryer. Refer to Figure 21.

d. Disconnect wires from heater assembly. Refer

to Figure 21.

NOTE: When reassembling, be sure all wire connectors are tight on element terminals, thermal fuse and limit thermostat.

Front

Bulkhead

Screw

W001R1

47. THERMOSTAT

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Disconnect wires and remove thermostat

attaching screws. Refer to Figure 22.

Attaching

Screws

Figure 22

Seal

Wire

Harness

Ground

Thermostat

Ground

Wire

Screw

D400SE1F

Lint

Filter

Front

Air Duct

Figure 23

48. AIR DUCT

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Open loading door and remove screw from end

of lint filter. Refer to Figure 12.

d. Lift lint filter out of air duct, paying close

attention to orientation.

D307SE1D

42 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

IMPORTANT: When installing lint filter, be sure to install the filter with the words facing the front of the dryer. If filter is installed backwards, lint will accumulate in exhaust system, which can adversely affect dryer performance.

e. Remove three screws holding the air duct to the

front bulkhead inside cylinder. Refer to Figure 23.

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

W005

f. Carefully lift air duct out of dryer.

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

Cover

Attaching

Screws

49. MOTOR AND EXHAUST ASSEMBLY

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Open loading door, remove screw, and lift filter

out of bulkhead.

d. Remove screws holding air duct to front

bulkhead (inside cylinder). Refer to Figure 23.

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

W005

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted, which can adversely affect dryer performance.

e. Disconnect wires from thermostat.

NOTE: Refer to wiring diagram when rewiring thermistor.

f. Remove screw holding ground wire to dryer

Ground

Wire

base. Refer to Figure 24.

g. Remove cylinder belt from idler and motor

pulleys. Refer to Figure 25.

h. Disengage motor wire harness terminal block

from motor switch by pressing in on the

Motor

Mount

Attaching

Screws

Thermostat

Figure 24

512261 43

D400SE1E

movable locking tabs (located on each end of the terminal block) and pulling away from motor. Refer to Figures 28 and 29.

i. Remove two screws holding motor mounting

bracket to dryer base. Refer to Figure 24.

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

CORRECT WAY

Belt

Exhaust

Duct

Idler

Pulley

Idler

Lever

D247SE1A

Figure 25

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

IMPORTANT: When reinstalling motor and exhaust assembly, be sure wire harness on right side is clipped to motor mounting bracket and is routed along dryer base (between motor mounting bracket and right side of cabinet). Refer to Figure 22. Tab on rear of motor mounting bracket must be slid into slot in dryer base. Be sure the belt has been installed on the correct side of the idler lever. Refer to Figure 25.

W005

INCORRECT WAY

Belt

Exhaust

Duct

Motor

Clamp

Motor Pulley

Motor

Switch

26 4 3

51

Idler

Pulley

Belt on Wrong Side

of Idler Lever

G

Idler

Lever

Figure 26

D248SE1A

Retaining

Ring

Idler

Pulley

Idler

Spring

D296SE3B

j. Pull assembly forward and disengage the

middle exhaust duct.

k. Rotate the assembly 90° counterclockwise and

slide out through front of dryer.

44 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

l. Motor pulley and idler pulley assemblies.

Refer to Figure 26 for motor and idler pulley removal.

NOTE: When repairing or replacing the idler lever, it is important to make sure the idler lever moves freely. To ensure that the idler lever can move freely, proceed as follows:

(1) Unhook idler spring. (2) Lift idler lever approximately 3 inches and

release. If idler lever does not fall back to the base of the motor mount, then idler

lever bolt is too tight. (3) Loosen idler lever bolt 1/4 turn. (4) Add grease between idler lever and motor

mount.

m. Blower fan and housing.

(1) Remove screws holding cover to housing.

Refer to Figure 24. (2) Hold motor pulley securely and unthread

blower fan from motor shaft (right hand

thread). Use a 7/8 inch, 6 point socket to aid

in the removal of the blower fan. (3) Remove three screws holding the blower

housing to the motor mounting bracket.

Refer to Figure 27.

n. Motor.

(1) Disengage motor wire harness terminal

block from the motor by pressing in on the movable locking tabs (located on each side of the terminal block) and pulling away from motor. Refer to Figure 28.

IMPORTANT: To avoid an open circuit, DO NOT pull on the terminal block wires when removing blocks from motor as this could damage the wires or terminal crimping.

Motor

Wire Harness

Connection Block

Locking

Tabs

Figure 28

D250SE3A

Before attaching wire harness terminal block to motor, be sure all the male terminals on motor are straight and are capable of accepting the terminals from the wire harness terminal block.

(2) Pry two motor clamps off motor mounting

bracket with screwdriver, then lift motor out of mounting bracket. Refer to Figure 26.

Blower Housing

Attaching Screws

Figure 27

512261 45

D249SE3B

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

NOTE: When replacing motor, motor switch should be at 10 o’clock position. The positioning tab on the motor should be engaged with the antirotating notch in the motor bracket.

283P4

Terminal

Extractor

Tool

W001R1

Terminal

Locking

Tab

Connection

Block

Figure 29

D251SE3A

o. Motor Connection Block Terminals

Remove terminals from the motor wire harness connection block using No. 283P4 Terminal Extractor Tool as follows:

(1) Insert the tool into the block on the back of

the terminal being removed. Refer to Figure 29.

(2) Apply tool pressure to compress the

terminal locking tab on terminal and force the terminal and wire out back side of

connection block. Refer to Figure 29. To install terminal in connection block, insert terminal (with wire securely crimped in place) into back side of connection block. Push terminal into connection block until locking tab on terminal spreads and holds terminal in place.

46 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

50. FRONT BULKHEAD ASSEMBLY

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17. Remove access panel.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16. Remove front panel.

NOTE: Refer to wiring diagram when rewiring switch.

Cabinet Top

Hold-down

Screw

Front

Bulkhead

Cabinet Top

Hold-down

Screw

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

g. Models with Cylinder Light – Disconnect

wire clip from front bulkhead.

h. Remove four screws holding bulkhead to front

flange of cabinet and lift complete bulkhead assembly out of slots in cabinet. Refer to Figure 30.

i. Remove air duct assembly.

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

WARNING

W001R1

W005

Bulkhead

Attaching

Screws

Bulkhead

Attaching

Screws

Figure 31. (1) Unsnap glide from each glide bracket. (2) Remove screws holding glide bracket to

front bulkhead.

j. Cylinder Glides and Glide Bracket. Refer to

Slot

D394S

Cabinet

Attaching

Screw

Figure 30

Air

Duct

e. Disengage belt from motor and idler pulley.

Refer to Figure 25.

Slot

Cylinder

Glide

Cabinet

Attaching

Screw

Screws

f. Models with Cylinder Light – Disconnect

wires from light receptacle terminals.

512261 47

Cylinder

Seal

Figure 31

Cylinder

Glide Bracket

D256SE3C

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

Long Flap

Short Flap

(Must be glued

to bulkhead)

Seal Stitching

(Must face towards

center of dryer)

Bulkhead

Figure 32

k. Front Cylinder Seal. Refer to Figure 32.

When installing the cylinder seal, it is important to remember these two steps: (1) The stitching on the seal must face towards

center of dryer.

(2) The short flap must be glued to the

bulkhead and the long flap left loose.

IMPORTANT: The replacement seal can be adhered to the bulkhead using No. 22506P Sealant. This is accomplished by applying a bead of sealant around the entire flanged area where the felt seal contacts the bulkhead.

D257SE3A

48 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

W001R1

Front

Bulkhead

Lint

Filter

D307SE1C

Figure 33

51. CYLINDER BELT

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

e. Disengage belt from motor and idler pulleys.

Refer to Figure 25.

f. Remove four screws holding bulkhead to front

flange of cabinet. Then, lift complete bulkhead assembly out of slots in cabinet. Refer to Figure 30.

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

W005

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

g. While supporting cylinder, carefully remove

belt from cylinder.

NOTE: When reinstalling belt, be sure belt is properly installed on motor and idler pulleys, and is on the correct side of the idler lever. Refer to Figure 25. Belt must be positioned around center section of cylinder approximately three inches ahead of rear rib on cylinder. Refer to Figure 34. After installing belt, manually rotate cylinder counterclockwise to check that belt is properly aligned.

512261 49

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

52. CYLINDER ASSEMBLY

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

e. Disengage belt from motor and idler pulleys.

Refer to Figure 25.

NOTE: When reinstalling belt, be sure belt is properly installed on motor and idler pulleys, and is on the correct side of the idler lever. Refer to Figure 25. Belt must be positioned around center section of cylinder approximately three inches ahead of rear rib on cylinder, with the ribbed surface of the belt against the cylinder. Refer to Figure 34. After installing belt, manually rotate cylinder counterclockwise to check that belt is properly aligned.

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

g. Remove two cabinet top hold-down screws.

Refer to Figure 30.

h. Carefully remove cylinder out through front of

dryer.

i. Baffles – Remove screws holding baffles to

cylinder. Refer to Figure 34.

Baffle

Cylinder

Assembly

(Includes

three baffles)

f. Remove four screws holding bulkhead to front

D414S

flange of cabinet. Then lift complete bulkhead assembly out of slots in cabinet. Refer to Figure 30.

WARNING

Screw

Figure 34

Rear

Rib

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

W005

50 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

53. REAR SEAL

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

e. Remove two cabinet top hold-down screws.

Refer to Figure 30.

f. Lift cabinet top to a vertical position by hinging

it on the rear hold-down brackets.

NOTE: Cabinet top may be raised and hinged on the rear hold-down brackets, or supported against wall behind the dryer.

g. Disengage belt from motor and idler pulleys.

Refer to Figure 25.

NOTE: When reinstalling belt, be sure belt is properly installed on motor and idler pulleys and is on the correct side of the idler pulleys. Refer to Figure 25. Belt must be positioned around center section of cylinder approximately three inches ahead of rear rib on cylinder with the ribbed surface of the belt against cylinder. Refer to Figure 34. After installing belt, manually rotate cylinder counterclockwise to check that belt is properly aligned.

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

i. Manually rotate cylinder until one of the baffles

is at the 6 o’clock position and carefully remove cylinder out through front of dryer.

j. Pull rear cylinder seal from flanged edge of

bulkhead. Refer to Figure 35.

NOTE: When installing the cylinder seal, it is important to remember these two important steps:

(1) The stitching on the seal must face towards the

dryer center. Refer to Figure 32.

(2) The short flap, shown in Figure 32, must be

glued to the bulkhead and the long flap left loose.

IMPORTANT: The seal can be adhered to the bulkhead using replacement sealant No. 22506P. This is accomplished by applying a bead of sealant around the entire flanged area where the felt seal contacts the bulkhead.

WARNING

W001R1

W005

h. Remove four screws holding bulkhead to front

flange of cabinet. Then, lift complete bulkhead assembly out of slots in cabinet. Refer to Figure 30.

512261 51

Section 5 Service Procedures

Rear

Bulkhead

Attaching

Screws

Outlet Cover

Rear Seal

Rear Bulkhead Attaching

Screws

Cylinder

Roller

Heater

Box

Cylinder

Roller

Exhaust

Duct

Screw

D405S

Figure 35

52 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

54. CYLINDER ROLLERS

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

panel locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

e. Disengage belt from motor and idler pulleys.

Refer to Figure 25.

f. Remove four screws holding bulkhead to front

flange of cabinet. Then lift complete bulkhead assembly out of slots in cabinet. Refer to Figure 30.

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

NOTE: When replacing the cylinder roller, it is important that cylinder roller is installed with the flanged surface of the roller bearing facing towards the front of the dryer.

55. OUTLET COVER

a. Open door and remove two screws holding

outlet cover to rear bulkhead. Refer to Figure 35.

Rear

Bulkhead

Locknut

Roller

Bracket

Shaft

Washers

W005

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of

Screw

duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

g. Pull cylinder forward allowing rear of cylinder

to drop down exposing rollers. Refer to Figure 36.

Retainer

Ring

(Must face toward front of dryer)

Flanged Surface

of Roller Bearing

D260SE3B

Figure 36

h. Refer to Figure 36 for removal of roller from

bulkhead.

512261 53

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

56. REAR BULKHEAD AND HEATER DUCT

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

panel locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws from bottom tabs on front

panel. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

e. Disengage belt from motor and idler pulleys.

Refer to Figure 25.

NOTE: When reinstalling belt, be sure belt is properly installed on motor and idler pulleys and is on the correct side of the idler pulleys. Refer to Figure 25. Belt must be positioned around cylinder approximately three inches ahead of rear rib on cylinder with the ribbed surface of the belt against the cylinder. Refer to Figure 34. After installing belt, manually rotate cylinder counterclockwise to check that belt is properly aligned.

f. Remove four screws holding bulkhead to front

flange of cabinet. Then lift complete bulkhead assembly out of slots in cabinet. Refer to Figure 30.

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

W005

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the seal is installed improperly, the airflow through the exhaust system will be restricted which can adversely affect dryer performance.

g. Remove two cabinet top hold-down screws.

Refer to Figure 30.

h. Carefully remove cylinder out through front of

dryer.

i. Gas Models:

(1) Disconnect igniter wires at disconnect

blocks, sensor wires from sensor terminals, and wires from gas valve coils at the quick disconnect blocks. Refer to Figure 19.

(2) Remove burner tube attaching screw from

right side of burner housing, while holding burner tube in place. Refer to Figure 21.

(3) Gently move burner tube toward rear of

dryer to disengage tab from slot on left side of burner housing. Refer to Figure 20.

(4) Carefully rotate burner tube and igniter

counterclockwise so tab is at the 8 o’clock position.

(5) Move air shutter end of burner tube slightly

to right and CAREFULLY remove burner tube and igniter assembly out through front of dryer. Refer to Figure 20.

IMPORTANT: The igniter is very fragile. Be careful not to damage it during removal.

(6) Remove screw holding burner housing to

heat shroud. Refer to Figure 19.

(7) Remove screw holding front of burner

housing to dryer base and remove housing out through front of dryer. Refer to Figure 21.

(8) Remove two screws holding shroud to

heater box, and remove shroud out through front of dryer. Refer to Figure 19.

54 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

j. Electric Models:

(1) Remove two screws holding element and

plate to heater box, then pull element down and away from heater box. Refer to Figure 21.

(2) Remove all wires from terminal block.

(Refer to appropriate wiring diagram when rewiring terminal block.)

Heater

Duct

Attaching

Screws

(3) Remove screw holding terminal block to

rear bulkhead. Refer to Figure 38.

k. While supporting bulkhead, remove the four

screws holding rear bulkhead to dryer cabinet, then lift complete assembly out of dryer. Refer to Figure 35.

l. Remove heater duct from rear bulkhead. Refer

to Figure 37.

Rear

Bulkhead

Heater

Duct

Attaching

Screws

Heater

Duct

D261SE3B

Figure 37

512261 55

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

57. TERMINAL BLOCK OR POWER CORD

a. Terminal Block:

(1) While supporting the access panel, remove

two screws from bottom edge of access panel. Refer to Figure 8.

(2) Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

(3) Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage holddown clips and locators from cabinet top.

(4) Disconnect wires from door switch. Refer

to Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

(5) Remove two cabinet top hold-down screws.

Refer to Figure 10.

(6) Lift cabinet top to a vertical position by

hinging it on the rear hold-down brackets. Refer to Figure 11.

NOTE: When servicing, cabinet top may be raised and hinged on the rear hold-down brackets, or supported against wall behind the dryer.

(7) Remove all wires from terminal block.

NOTE: Refer to wiring diagram when rewiring terminal block.

(8) Remove screw holding terminal block to

rear bulkhead. Refer to Figure 38.

NOTE: Do not let terminal block insulation drop when removing the block. Insulation must be in place when reinstalling block.

Cabinet

Top

Terminal

Block

Terminal Block

Attaching

Screw

D406S

Figure 38

56 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

b. Power Cord (Gas Models Only):

(1) Remove access plate on rear of cabinet. (2) Remove strain relief. (3) Remove screw holding power cord ground

wire to rear bulkhead. Refer to Figure 39.

NOTE: Reinstall screw and ground wires into same hole in bulkhead when reinstalling power cord.

L1

115±12

V.A.C.

115±12

V.A.C.

Ground

0

V.A.C.

Neutral

Side

(4) Disconnect molex plug and remove power

cord from rear of dryer cabinet.

NOTE: A qualified electrician should check the polarity of the wall receptacle. If a voltage reading is measured other than that illustrated, the qualified electrician should correct the problem.

Ground

Wires

Dryer

Power Cord

D354SE3A

Figure 39

512261 57

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

58. CABINET

a. Side Panels:

(1) While supporting the access panel, remove

two screws from bottom edge of access panel. Refer to Figure 8.

(2) Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

(3) Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage holddown clips and locators from cabinet top.

(4) Disconnect wires from door switch. Refer

to Figure 16.

NOTE: Refer to wiring diagram when rewiring control panel components.

(5) Remove front panel. (6) Disengage belt from motor and idler

pulleys. Refer to Figure 25.

NOTE: When reinstalling belt, be sure belt is properly installed on motor and idler pulleys and is on the correct side of the idler lever. Refer to Figure 25. Belt must be positioned around center section of cylinder approximately three inches ahead of rear rib on cylinder with the ribbed surface of the belt against the cylinder. Refer to Figure 34. After installing belt, manually rotate cylinder counterclockwise to check that belt is properly aligned.

(7) Models with Cylinder Light – Disconnect

wires from light receptacle terminals.

(8) Models with Cylinder Light – Disconnect

wire clip from front bulkhead.

(9) Remove four screws holding front

bulkhead to dryer. Refer to Figure 35. Remove front bulkhead.

NOTE: Air duct can remain attached to front bulkhead.

(10) Remove two cabinet top hold-down screws.

Refer to Figure 10.

(11) Lift cabinet top to a vertical position by

hinging it on the rear hold-down brackets. Refer to Figure 11.

NOTE: When servicing, cabinet top may be raised and hinged on the rear hold-down brackets or supported against wall behind dryer.

NOTE: Retainer clips hold the wire harness to the side panel of the dryer. Remove these before attempting to withdraw wire harness.

(12) Carefully withdraw wire harness through

hole in cabinet top and lift the top off the

rear hold-down brackets. (13) Set cabinet top aside. (14) Remove nine screws holding side panel

(left or right) to dryer. Refer to Figure 40.

Remove side panel.

b. Back Panel:

(1) While supporting the access panel, remove

two screws from bottom edge of access

panel. Refer to Figure 8.

(2) Gently lower the access panel to disengage

locators from bottom edge of front panel.

Refer to Figure 17.

(3) Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to

Figure 17. Swing bottom of front panel

away from dryer far enough to disengage

hold-down clips and locators from cabinet

top.

(4) Disconnect wires from door switch. Refer

to Figure 16.

NOTE: Refer to wiring diagram when rewiring control panel components.

(5) Remove front panel. (6) Remove two cabinet top hold-down screws.

Refer to Figure 10.

58 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

(7) Lift cabinet top to a vertical position by

hinging it on the rear hold-down brackets. Refer to Figure 11.

NOTE: When servicing, cabinet top may be raised and hinged on the rear hold-down brackets or supported against wall behind dryer.

(8) Carefully withdraw wire harness through

hole in cabinet top and lift the top off the rear hold-down brackets.

NOTE: Retainer clips hold the wire harness to the side panel of the dryer. Remove these before attempting to withdraw wire harness.

(9) Set cabinet top aside.

(10) Disengage belt from motor and idler

pulleys. Refer to Figure 25.

NOTE: When reinstalling belt, be sure belt is properly installed on motor and idler pulleys and is on the correct side of the idler lever. Refer to Figure 25. Belt must be positioned around center section of cylinder approximately three inches ahead of rear rib on cylinder with the ribbed surface of the belt against the cylinder. Refer to Figure 34. After installing belt, manually rotate cylinder counterclockwise to check that belt is properly aligned.

(11) Remove four screws holding front

bulkhead to dryer. Refer to Figure 30.

(a) Remove front bulkhead. (b) Remove cylinder.

NOTE: When reassembling the front bulkhead to the cabinet, hold glides in position with finger tips on the edges of glides. Once bulkhead is in place, inspect the glide position with a mirror to ensure the glides are aligned with the cylinder, making sure the tabs are visible. Refer to Figure 31.

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

IMPORTANT: During reinstallation of front bulkhead, be sure that air duct is properly positioned with flange inside the seal on blower fan cover. Refer to Figure 22. If the duct or seal is installed improperly, the airflow through the dryer will be reduced which can cause fire and dryer malfunction.

(12) For Gas Models:

(a) Disconnect igniter wires at disconnect

(b) Remove screw from right side of burner

(c) Gently move burner tube toward rear of

(d) Carefully rotate burner tube and igniter

(e) Move air shutter end of burner tube

NOTE: The igniter is very fragile. Be careful not to damage it during removal.

(f) Remove screw holding burner housing

WARNING

blocks, sensor wires from sensor terminals, and wires from gas valve coils at the quick disconnect blocks. Refer to Figure 19.

housing holding burner tube in place. Refer to Figure 21.

dryer to disengage tab from slot on left side of burner housing. Refer to Figure 19.

counterclockwise so tab is at the 8 o’clock position.

slightly to right and CAREFULLY remove burner tube and igniter assembly out through front of dryer.

to heat shroud. Refer to Figure 19.

W001R1

W005

512261 59

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

(g) Remove screw holding front of burner

housing to dryer base and remove housing out through front of dryer. Refer to Figure 21.

(h) Remove four screws holding shroud to

heater box. Remove shroud out through front of dryer. Refer to Figure 19.

(i) While supporting bulkhead, remove

screws holding bulkhead to rear of dryer cabinet, and remove assembly out of dryer. Refer to Figure 35.

(j) Remove screw holding exhaust duct to

dryer cabinet and pull duct out of cabinet. Refer to Figure 35.

(k) Remove two screws from each rear

cabinet top hold-down bracket. Refer to Figures 10 and 11.

(l) Remove screw holding terminal block

access plate to rear of dryer cabinet and

remove plate. (m)Remove wire harness clips. (n) Remove locators and screws.

Electric Models:

(a) Remove two screws holding element

and plate to heater box, then pull

element down and away from heater

box. Refer to Figure 21. (b) While supporting bulkhead, remove

screws holding bulkhead to rear of

dryer cabinet, and remove assembly out

of dryer. Refer to Figure 35. (c) Remove screw holding exhaust duct to

dryer cabinet and pull duct out of

cabinet. Refer to Figure 35. (d) Remove two screws from each rear

cabinet top hold-down bracket. Refer to

Figures 10 and 11. (e) Remove screw holding terminal block

access plate to rear of dryer cabinet and

remove plate. (f) Remove wire harness clips. (g) Remove locators and screws.

(13) Remove two cabinet top hold-down screws.

Refer to Figure 10.

NOTE: When servicing, cabinet top may be raised and hinged on the rear hold-down brackets or supported against wall behind dryer.

(14) Carefully withdraw wire harness through

hole in cabinet top and lift the top off the rear hold-down brackets.

NOTE: Retainer clips hold the wire harness to the side panel of the dryer. Remove these before attempting to withdraw wire harness.

(15) Set cabinet top aside. (16) Remove two screws holding hold-down

brackets to back panel. Refer to Figure 40.

(17) Remove 13 screws attaching back panel to

dryer. Refer to Figure 40. Remove back panel.

60 512261

Section 5 Service Procedures

Screw

Screws

DRY1820S

Figure 40

512261 61

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

59. BASE

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 17. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

NOTE: Refer to wiring diagram when rewiring switch.

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

W005

e. Gas Models:

(1) Disconnect igniter wires at disconnect

blocks, sensor wires from sensor terminals and wires from gas valve coils at the quick disconnect blocks. Refer to Figure 19.

(2) Close main gas shut-off valve. Refer to

Figure 19. (3) Disconnect gas line to dryer. (4) Remove three screws holding gas valve

bracket to base and remove valve with

attached lead-in pipe. Refer to Figure 21. (5) Remove screw holding burner tube in place

from right side of burner housing. Refer to

Figure 21. (6) Gently move burner tube toward rear of

dryer to disengage tab from slot on left side

of burner housing. Refer to Figure 19.

(7) Carefully rotate burner tube and igniter

counterclockwise so tab is at the 8 o’clock position, and CAREFULLY remove burner tube and igniter assembly out through front of dryer.

IMPORTANT: The igniter is very fragile. Be careful not to damage it during removal.

(8) Remove screw holding front of burner

housing to dryer base. Refer to Figure 21.

(9) Remove four screws holding shroud to

heater box and remove shroud and burner housing out through front of dryer. Refer to Figure 19.

f. Electric Models:

(1) Remove two screws holding element and

plate to heater box, then pull element down and away from heater box. Refer to Figure 21.

(2) Disconnect wire harness from limit

thermostat, thermal fuse and/or heating element. Refer to Figure 21.

g. Open loading door and remove lint filter screw

and lint filter. Refer to Figure 12.

h. Remove screws holding air duct to front

bulkhead and remove air duct. Refer to Figure 23.

IMPORTANT: When reassembling, be sure seal on blower fan cover makes airtight seal on flange of duct. Refer to Figure 22. If the duct or seal is installed improperly, the airflow through the dryer will be reduced which can adversely affect dryer performance.

i. Disconnect wires from thermostat, and remove

ground screw. Refer to Figure 22.

NOTE: Refer to wiring diagram when rewiring thermostat.

j. Remove cylinder belt from idler and motor

pulleys. Refer to Figure 25.

62 512261

Section 5 Service Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

k. Remove two screws holding motor mounting

bracket to dryer base. Then pull complete assembly forward to disengage middle exhaust duct.

l. Rotate the assembly counterclockwise 90° and

slide out front of machine.

m. Disconnect wires from motor switch and

remove harness clip from motor bracket. Refer to Figure 26. Then, set motor and blower assembly off to the side.

n. Remove screw holding bracket on exhaust duct

to rear of cabinet and pull duct out of cabinet. Refer to Figure 35.

W001R1

IMPORTANT: When reinstalling motor and blower assembly, be sure wire harness on right side is clipped to motor mounting bracket and is routed along dryer base (between motor mounting bracket and right side of cabinet). Refer to Figure 22. Tab on rear of motor mounting bracket must be slid into slot in dryer base. Be sure the belt has been installed on the correct side of the idler lever. Refer to Figure 25.

o. Remove cabinet per Paragraph 58. p. Remove leveling legs from base and reinstall

on new base. Refer to Figure 41.

512261 63

Section 5 Service Procedures

Notes

64 512261

Section 6

Adjustments

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

IMPORTANT: When reference is made to directions (right or left) in this manual, it is from operator’s position facing front of washer.

60. LEVELING LEGS

Refer to Figure 41.

NOTE: Dryer should be installed on a solid and level floor.

a. Place dryer in position, adjusting the legs until

dryer is level.

WARNING

To reduce the risk of serious injury or death by carbon monoxide and other gases in gas dryers, carefully read and follow all instructions given in this section.

W005

NOTE: Legs can be adjusted outside the dryer by using a 1-1/4 inch size wrench, or from inside the dryer (with lower front access panel removed) by using a 1/4 inch drive ratchet with extension.

b. Keep dryer as close to the floor as possible. All

four legs must rest firmly on the floor so weight of the dryer is evenly distributed. The dryer MUST NOT rock.

IMPORTANT: DO NOT move the dryer at any time unless the dryer is completely assembled. DO NOT slide the dryer across the floor once the leveling legs have been extended as the legs and base could become damaged.

Dryer

Base

Leveling

Leg

Figure 41

512261 65

D351S

Section 6 Adjustments

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

61. BURNER FLAME (Gas Models)

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Set timer to 60 minutes.

d. Close the loading door. Start the dryer in a heat

setting (refer to Operating Instructions supplied with the dryer). The dryer will start, the igniter will glow red, and the main burner will ignite.

e. Allow the dryer to operate for approximately

five minutes, then loosen the air shutter lockscrew. Refer to Figure 42.

Shut-Off Valve

Handle

(Shown in open position)

f. Turn the air shutter to the left to get a luminous

yellow tipped flame, then turn it back slowly to the right to obtain a steady blue flame.

g. After proper flame is obtained, tighten air

shutter lockscrew firmly. Refer to Figure 42.

h. Reinstall access panel and screws.

WARNING

To reduce the risk of fire or serious injury, the access panel must be in place during normal operation.

W262

NOTE: After the dryer has operated for approximately three minutes, exhaust air or exhaust pipe should be warm.

Air Shutter Lockscrew

Air

1/8 Inch Pipe Plug

(For checking manifold pressure)

Figure 42

66 512261

Shutter

D265SE3A

Section 7

Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

IMPORTANT: Electrical test procedures in this service manual are performed by using a Volt-Ohm meter. Tests can also be performed using a multimeter or any other electrical testing equipment with which the service person is familiar.

62. TIMER CONTACTS

Refer to Figure 43. a. Disconnect wires from timer, except timer

motor wires.

NOTE: Refer to appropriate wiring diagram when rewiring timer.

b. Manually rotate timer out of “OFF” position

and into cycle.

c. Set test meter to read Ohms. The following

readings should be found: (1) Motor circuit test – L1 and M = “zero”

Ohms (closed)

(2) Heat circuit test – L2 and H = “zero” Ohms

(closed)

(3) Timer motor test – T and M (electric

models) or T and N (gas models) = approximately 2460-3100 Ohms or apply live power to timer motor terminals and motor should run.

NOTE: Timer Motor Resistance:

120 Volt, 60 Hz 2,460 – 3,100 Ohms 240 Volt 10,900 – 13,000 Ohms 24 Volt 80 – 130 Ohms

(4) Rotate timer to “cooldown” (5 minutes

before “OFF”). “Infinite” (open) reading should be found between L2 and H.

(5) Rotate timer to “OFF” position. “Infinite”

(open) reading should be found between L1 and M and between L2 and H.

NOTE: Timer motor power is supplied through M (electric models) or N (gas models) terminal.

512261 67

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

“H”

“L2”

Timer Motor

Wires

L3

T

A

H

L2 L2

MODEL 275BEF

R

RSPC

MOD 60-1

XXX VAC

2

7

.

o

0

N

S

TM

S

T

G

O

N

I

K

3 WATT

P/B

M

P/B

L1

“L1”

DRY1827S

ELECTRIC MODELS

63. FABRIC SELECTOR SWITCH

NOTE: Refer to proper model wiring diagram when rewiring switch.

a. Set test meter to read Ohms and apply meter

probes to switch terminals.

NOTE: Refer to proper model wiring diagram when reconnecting wires.

“M”

Figure 43

“H”

“L2”

L3

T

A

MODEL 275BEF

Timer Motor

Wires

H

L2 L2

R

RSPC

MOD

60-1

XXX VAC

2

7

.

o

0

N

S

TM

S

T

G

O

N

I

K

3 WATT

P/B

M

P/B

L1

“M”

“L1”

DRY1826S

GAS MODELS

FABRIC SELECTOR SWITCH – 4 Position

L1-1 L1-2 No Heat – – Delicate X X Perm. Press – X Regular – X X indicates closed

FABRIC SELECTOR SWITCH

– 3 Position

L1-2 L1-3 L1-1 No Heat – X – Delicate X – X Perm. Press/Regular X – – X indicates closed

68 512261

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

64. DRIVE MOTOR

Refer to Figure 44. a. Remove motor and exhaust assembly. Refer to

Paragraph 49.

b. Disconnect motor wire harness at motor

disconnect block.

Motor

Disconnect

Block

1

5

3

4

6

2

Motor

Switch

NOTE: Refer to wiring schematic, Section 8, for internal motor switch wires.

NOTE: Drive Motor Resistance

120 Volt 2,460 – 3,100 Ohms 240 Volt 10,000 - 13,000 Ohms

Motor and

Exhaust

Assembly

1

643 5

2

G

Drive

Motor

D326SE3A

Figure 44

512261 69

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

c. Motor Switch (Refer to SECTION 8 for Internal Wiring of the Dryer Motor Switch.)

WARNING

Disconnect electric power to dryer before performing any of the following steps or when replacing inoperative motor switch.

W290

Unplug the motor wire harness from the motor

connection block before starting this test.

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Start Terminals

Note: Disconnect terminal 5 wire (yellow or copper) from motor switch before testing start terminals.

Run Terminals

Note: Reconnect terminal 5 wire (yellow or copper) to motor switch before testing run terminals.

Heater Circuit Terminals

A. Continuity exists between switch

terminal 5 and terminal 3 (black or copper wire).

YES

B. Manually depress actuator.

Continuity broken between switch terminal 5 and terminal 3 (black or copper wire).

YES

C. Continuity broken between switch

terminal 6 and terminal 5 (yellow or copper wire).

YES

D. Manually depress actuator.

Continuity exists between switch terminal 6 and terminal 5 (yellow or copper wire).

YES

E. Continuity broken between switch

terminal 1 and switch terminal 2.

YES

NO

Inoperative start

switch. Replace switch.

Refer to Section 5.

Inoperative start

switch. Replace switch.

Refer to Section 5.

F. Manually depress actuator.

Continuity exists between switch terminal 1 and switch terminal 2.

YES

Motor switch checks O.K.

70 512261

NO

Inoperative start

switch. Replace switch.

Refer to Section 5.

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

d. Motor Windings (Refer to SECTION 8 for Internal Wiring of the Dryer Motor Switch.)

WARNING

Disconnect electric power to dryer before performing any of the following steps or when replacing inoperative motor switch.

W290

W001R1

Start Winding

Run Main Winding

Protector

G. 1 – 2 Ohms between terminal

3 wire and orange or copper wire on the back of switch.

YES

H. 1 – 2 Ohms between terminal 5

wire and orange or copper wire on the back of switch wire.

YES

I. Continuity exists between

orange or copper wire on back of switch and brown or blue wire in terminal 4.

YES

All motor windings check O.K.

NO

Inoperative start winding.

Replace motor. Refer to

Paragraph 49.

Inoperative run main winding. Replace motor. Refer to

Refer to

Paragraph 49.

Inoperative protector.

Replace motor.

Paragraph 49.

512261 71

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

65. MOTOR SWITCH

a. Remove motor and exhaust fan assembly. Refer

to Paragraph 49.

b. Remove the two motor switch attaching screws.

Refer to Figure 50. Disconnect switch leads. Remove motor switch.

c. Remove thermal overload protector.

Thermal

Overload

Protector

NOTE: The thermal overload protector is unique to the motor from which it was removed and should only be used on that motor. To reduce the risk of overheating the motor, do not use any thermal overload protector other than the one taken from the inoperative motor switch in step 3.

(1) Motor with Switch on Blower End

Using a small bladed screwdriver, press the thermal overload protector mounting tab downward and remove the thermal overload protector from the inoperative motor switch. Refer to Figure 45.

Mounting

Tab

Motor

Switch

Figure 45

72 512261

D029KE3A

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

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(2) Motor with switch on pulley end

Press the tip of a small bladed screwdriver into the slot located between top of motor switch and plastic clip. Lift up on handle of screwdriver until both clip and thermal overload protector detach from motor switch. Refer to Figure 46.

d. Attach the thermal overload protector removed

in Step “c” to the new motor switch.

e. Install new motor switch onto motor and

reconnect motor switch leads removed in Step “b”. Refer to Figure 50.

Top Of

Motor

Switch

f. Test motor switch by following the step-by-

step procedures included in Paragraph 64.

g. Before reinstalling the motor assembly, apply

power (120 VAC) directly to motor terminals 4 and 5. Then start and run the motor at least 6 times, making sure the motor and switch are operating properly.

NOTE: The dryer manufacturer and parts suppliers are not liable for improper switch installation.

Thermal Overload Protector

Plastic

Clip

Motor

Switch

Figure 46

512261 73

D359SE3A

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

4

Secondary

Coil

5

2 3

1

Holding Coil

and

Booster Coil

(Split Coil Valve)

120 Volt, 60 Hertz

Electrical

Supply Line

SECONDARY

COIL

HOLDING

COIL

BOOSTER

COIL

W001R1

Sensor

Igniter

D267SE3B

66. BURNER SYSTEM OPERATION (Gas Models – Refer to Figure 47.)

a. Components

This burner has four basic components: a silicon carbide (glow bar) igniter, burner tube, sensor, and a two-stage gas valve consisting of a split-coil valve and a secondary coil valve. The split-coil valve is opened when the dryer thermostat calls for heat, while the secondary valve does not open until the igniter has attained ignition temperature.

b. Pre-Ignition Circuits

When the dryer thermostat calls for heat, circuits are completed through the holding coil, sensor, booster coil and igniter. Both coils must be energized to open the split-coil valve. Once opened, the holding coil can hold the valve open without assistance from the booster coil. The sensor triggers the current to travel around the secondary coil and through the igniter, causing the igniter to get hot.

c. Burner Circuit

In approximately 30 seconds, the igniter attains ignition temperature and ignition is made. The heat from the burner flame causes the sensor contacts (located on burner housing beside the

D268SE3A

Figure 47

igniter) to open. A circuit is then completed through the secondary valve coil, opening the valve and allowing gas to flow.

d. Momentary Power Interruption

Upon resumption of power, sensor contacts will still be open, permitting secondary valve to open. However, with the secondary coil in the circuit, the booster coil cannot draw enough current to open the split-coil valve. When sensor contacts do reclose, the secondary valve will close, and the burner system will be in the normal pre-ignition circuit.

e. Flame Failure

In case of flame failure, the sensor contacts will re-close in about 45 seconds. This will close the secondary valve and the burner system will be in the normal pre-ignition circuit.

f. Ignition Failure

If flame is not established as sensor contacts open, secondary valve will remain open until sensor contacts re-close. Sensor will continue to recycle the igniter and secondary valve (about once per minute) until ignition is made or dryer is turned off.

74 512261

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

67. ELECTRICAL CIRCUIT TO IGNITION SYSTEM (Gas Models)

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Close main gas shut-off valve. Refer to

Figure 42.

d. Remove valve wire harness disconnect block

from the holding and booster coil. Refer to Figure 48.

e. Plug dryer power cord into wall receptacle, and

start the dryer in a heat setting (refer to the Operating Instructions supplied with dryer).

f. Set test meter to read AC voltage and apply

meter probes into terminals on the dryer harness plug that would correspond to terminals "1" and "2" on the coil. Figure 47. Meter should register line voltage in all Fabric settings, except NO HEAT which should read “zero” VAC.

g. If meter does not read line voltage in step “f”,

check motor switch, thermostats, fabric switch, accumulator, or timer.

4

5

Secondary

Coil

4 5

1

2

1 - 3

3

Holding

And Booster

Coil

D270SE3A

To reduce the risk of fire, explosion and electric shock, close the valve in the gas supply line to the gas dryer and disconnect the electrical power unless gas or power supplies are required to perform test procedure.

68. GAS VALVE COILS CHECK (Gas Models)

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Close main gas shut-off valve. Refer to

Figure 42.

d. Remove disconnect blocks from gas valve

coils.

e. Set test meter to read Ohms and put meter

probes to terminals shown in Figure 48, and in the following chart.

COIL TOLERANCE READINGS

Meter probes to terminals: Meter should read:

Holding Coil – Terminals 1 & 2 1365 ± 230 Ohms

Booster Coil – Terminals 1 & 3 560 ± 100 Ohms

Secondary Coil – Terminals 4 & 5 1325 ± 230 Ohms

NOTE: If meter registers any other readings than those listed above, the respective coil(s) should be replaced.

WARNING

W001R1

W263

Figure 48

512261 75

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

69. SENSOR CHECK (Gas Models)

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Close main gas shut-off valve. Refer to

Figure 42.

d. Remove wires from sensor terminals. Refer to

Figure 19.

e. Set test meter to read Ohms and put meter

probes on sensor terminals. Meter should read “zero” Ohms. If meter registers an Ohm reading of any amount, replace sensor.

Igniter and

Bracket

SILICON CARBIDE IGNITER AND

BRACKET ASSEMBLY

Attaching

W001R1

Screw

White

Ceramic

Portion

D337SE3A

70. IGNITER CHECK (Gas Models)

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Close main gas shut-off valve. Refer to

Figure 42.

d. Disconnect igniter wires at disconnect block.

e. Set test meter to read Ohms and put meter

probes on terminals of igniter wires.

f. Meter should read between 45 – 200 Ohms.

Refer to Figure 49.

NOTE: If meter does not read appropriate Ohms, then replace the igniter.

IMPORTANT: Always examine all wires, terminals and connectors to be sure wiring is correct before replacing any components.

Figure 49

76 512261

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

W001R1

71. THERMAL FUSE (Electric Models)

a. While supporting the access panel, remove two

screws from bottom edge of front access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

panel locators from bottom edge of front panel. Refer to Figure 17.

c. Label and disconnect wires from thermal fuse.

Refer to Figure 21.

NOTE: Refer to wiring diagram when rewiring thermal fuse.

d. Set multimeter to read Ohms. Apply meter

probes to thermal fuse terminals. Multimeter should read 0 Ohms. If the meter does not show any reading (infinite Ohms), then the fuse is open. If the fuse is open, then replace BOTH the thermal fuse and the limit thermostat.

72. HEATER ASSEMBLY (Electric Models)

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

panel locators from bottom edge of front panel. Refer to Figure 17.

c. Disconnect wires from heater assembly. Refer

to Figure 21.

Element Color Code

Red 5 240 V 60 Hz. 10.39 ± .31 Ohms Cold White 4.75 208 V 60 Hz. 8.2 ± .5 Ohms Cold Orange 5.35 240 V 60 Hz. 9.72 ± .3 Ohms Cold Purple 4.25 208 V 60 Hz. 9.27 ± .3 Ohms Cold

KW Voltage/Hz. Resistance Reading

73. CYCLING OR LIMIT THERMOSTAT

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

panel locators from bottom edge of front panel. Refer to Figure 17.

c. Label and disconnect wires from thermostat.

Refer to Figure 22.

NOTE: Refer to wiring diagram when rewiring thermostat.

Cycling Thermostat (S.P.S.T. – 2 Terminals) or Limit Thermostat

d. Set meter to read Ohms.

(1) Apply meter probes to the thermostat

terminals.

(2) Meter should read “zero.”

NOTE: Refer to wiring diagram when rewiring heater assembly.

d. Set meter to read Ohms. Apply meter probes to

the heater assembly terminals. Refer to Figure 21. Meter should read as follows: (Cold Ohms).

512261 77

Section 7 Test Procedures

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

74. DOOR SWITCH

a. While supporting the access panel, remove two

screws from bottom edge of access panel. Refer to Figure 8.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel. Refer to Figure 17.

c. Remove two screws holding bottom tabs on

front panel to dryer side panels. Refer to Figure 9. Swing bottom of front panel away from dryer far enough to disengage hold-down clips and locators from cabinet top.

d. Disconnect wires from door switch. Refer to

Figure 16.

W001R1

NOTE: Refer to model wiring diagram when rewiring door switch.

e. Set meter to read Ohms and apply meter probes

on switch terminals 1 and 3 with door closed. You should get “zero” reading.

f. Apply probes to terminals 1 and 2 with door

closed. The meter should read “infinite”.

g. Open door. Meter should read “infinite”

between 1 and 3 and “zero” between 1 and 2.

78 512261

Section 8

Internal Wiring of Dryer Motor Switch

WARNING

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

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

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

MAIN

W001R1

ORANGE/COPPER

OVERLOAD

PROTECTOR

BLUE/BROWN

START

CUSTOMER CIRCUIT

PUSH TO

START

BLACK/COPPER

LINE

26 4 3 5 1

S R

R

SWITCH SHOWN IN START POSITION

G

YELLOW/COPPER

Motor Switch

Attaching Screws

26 4 3 5 1

R.S.P.C.

G

D329SE3D

Figure 50

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Section 8 Internal Wiring of Dryer Motor Switch

Notes

80 512261

Unimac UDE30FGS171TW08 Parts Diagram

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Safety Information

Locating an Authorized Servicer

Introduction

Customer Service

Nameplate Location

Model Identification

How Your Dryer Works

Troubleshooting

1. DRYER MOTOR DOES NOT RUN

2. DRYER STOPS IN CYCLE; QUITS AFTER THE FIRST FEW LOADS; HAS A BURNING SMELL; CYCLES ON MOTOR THERMAL PROTECTOR

3. DRYER MOTOR RUNS BUT CYLINDER DOES NOT TURN

4. DRYER MOTOR DOES NOT STOP

5. DRYER RUNS ONLY WHEN DOOR IS OPEN

6. DRYER HEATING ASSEMBLY DOES NOT HEAT OR BURNER DOES NOT IGNITE

10. DRYER HEATER ASSEMBLY OR BURNER SHUTS OFF PREMATURELY

11. DRYER HEATER ASSEMBLY OR BURNER REPEATEDLY CYCLES OFF ON LIMIT THERMOSTAT

12. DRYER HEATER ASSEMBLY OR BURNER DOES NOT SHUT OFF

13. CLOTHES DO NOT DRY IN DRYER

14. TIMER DOES NOT ADVANCE IN AUTOMATIC CYCLE

15. CLOTHES ARE TOO HOT WHEN REMOVED FROM DRYER

16. EXCESSIVE CHATTERING OR VIBRATING NOISE IN DRYER

17. EXCESSIVE HUMMING OR WHISTLING NOISE IN DRYER

Grounding

18. GROUND WIRES FROM POWER CORD TO REAR BULKHEAD AND FROM REAR BULKHEAD TO CONTROL CABINET Check Wall Receptacle Polarity (Gas Dryer Models Only)

19. GROUND WIRE FROM TERMINAL BLOCK TO REAR BULKHEAD AND FROM REAR BULKHEAD TO CONTROL CABINET (Electric Dryer Models Only)

20. STACKED DRYER GROUND CONNECTIONS

Service Procedures

21. TO REMOVE THE UPPER DRYER

22. CONTROL HOOD ASSEMBLY (Rear Control Dryers)

23. CONTROL HOOD END CAPS (Rear Control Dryers)

24. GRAPHIC PANEL (Rear Control Dryers)

25. TIMER (Rear Control Dryers)

26. FABRIC SELECTOR SWITCH (Rear Control Dryers)

27. SIGNAL (Rear Control Dryers)

28. EXTEND TUMBLE SWITCH (Rear Control Dryers)

29. CONTROL PANEL AND CONTROLS (Front Control and Stacked Dryers)

30. ACCESS PANEL

31. CABINET TOP

32. LINT FILTER

33. LOADING DOOR

34. INNER AND OUTER DOOR PANELS AND DOOR PULL

35. DOOR STRIKE

36. REVERSING DOOR PROCEDURE (Doors Without Windows Only) The dryer door is completely reversible. To reverse door proceed as follows:

37. DOOR SEAL

38. FRONT PANEL AND PANEL SEAL

39. DOOR SWITCH

40. DOOR CATCH

41. DOOR HINGE

42. HOLD-DOWN CLIPS AND LOCATORS

43. BURNER SYSTEM COMPONENTS (Gas Models)

44. BURNER HOUSING AND HEAT SHROUD (Gas Models)

45. LIMIT THERMOSTAT

46. HEATER ASSEMBLY (Electric Models)

47. THERMOSTAT

48. AIR DUCT

49. MOTOR AND EXHAUST ASSEMBLY

50. FRONT BULKHEAD ASSEMBLY

51. CYLINDER BELT

52. CYLINDER ASSEMBLY

53. REAR SEAL

54. CYLINDER ROLLERS

55. OUTLET COVER

56. REAR BULKHEAD AND HEATER DUCT

57. TERMINAL BLOCK OR POWER CORD

58. CABINET

59. BASE

Adjustments

60. LEVELING LEGS

61. BURNER FLAME (Gas Models)

Test Procedures

62. TIMER CONTACTS

63. FABRIC SELECTOR SWITCH

64. DRIVE MOTOR

65. MOTOR SWITCH

66. BURNER SYSTEM OPERATION (Gas Models – Refer to Figure 47.)