Unimac UDG009*A Parts Diagram

Commercial

Dryers

Metered and Nonmetered

Refer to Page 6 for Model Numbers

Service

www.comlaundry.com

D304P

Part No. 505035R1

August 2001

Section 1 – Safety Information

Locating an Authorized Servicer ............................4

Section 2 – Introduction

Customer Service ....................................................5

Nameplate Location ................................................5

Model Identification ................................................6

How Your Dryer Works ..........................................7

Section 3 – Troubleshooting

1. Motor Does Not Run ........................................9

2. Unit Stops In Cycle; Quits After The First Few Loads; Has A Burning Smell;

Cycles On Motor Thermal Protector .............10

3. Motor Runs But Cylinder Does Not Turn .....11

4. Motor Does Not Stop ....................................11

5. Heating Assembly Does Not Heat Or Burner

Does Not Ignite .............................................12

6. Igniter Does Not Glow (Gas Supply Sufficient)

– Gas Models .................................................13

7. Burner Ignites And Goes Out Repeatedly

– Gas Models .................................................13

8. Igniter Glows But Burner Does Not Ignite

– Gas Models .................................................13

9. Heater Assembly Or Burner Shuts Off

Prematurely ....................................................14

10. Heater Assembly Or Burner Repeatedly Cycles

Off On Limit Thermostat ...............................14

11. Heater Assembly Or Burner Does

Not Shut Off ...................................................15

12. Clothes Do Not Dry .......................................15

13. Clothes Are Too Hot When Removed From

Dryer ..............................................................16

Section 4 – Grounding

14. Ground Wires From Block To Rear Bulkhead and From Rear Bulkhead To Control Housing

(Electric Models Only) ...................................17

15. Ground Wires From Power Cord To Rear Bulkhead And From Rear Bulkhead To Control Housing. Check Wall Receptacle Polarity

(Gas Models Only) .........................................17

16. Metered and Nonmetered Models – Ground Wires From Rear Bulkhead To Accumulator Bracket or Timer (Depending On Model) and

From Cabinet Top To Control Panel ..............18

Section 5 – Service Procedures

17. Access Panel ..................................................19

18. Control Panel and Controls (Metered and

Nonmetered) ..................................................19

19. Graphic Overlay .............................................21

20. Timer (Nonmetered Models) .........................21

21. Accumulator (Metered Models) .....................23

22. Electronic Control ..........................................24

23. Coin Drop ......................................................26

24. Meter Case (Metered Models) .......................27

25. Timer Case (Nonmetered Models) ................29

26. Security Case and Card Reader (Card Reader

Models) ..........................................................30

27. Control Hood .................................................32

28. Cabinet Top (Nonmetered Models) ...............32

29. Cabinet Top (Metered Models) ......................33

30. Lint Filter .......................................................34

31. Loading Door and Door Hinge ......................34

Reversing Door Procedure . . . ..............................35

32. Inner and Outer Door Panels and Door Pull ..36

33. Door Strike .....................................................36

34. Door Seal .......................................................37

35. Front Panel and Panel Seal ............................38

36. Door Switch ...................................................38

37. Door Catch .....................................................38

38. Door Hinge ....................................................40

39. Hold-down Clips and Locators ......................40

40. Burner System Components (Gas Models) ...41

41. Burner Housing and Heat Shroud

(Gas Models) ..................................................42

42. Limit Thermostat ...........................................43

43. Heating Element (Electric Models) ...............43

44. Thermistor or Thermostat ..............................44

45. Air Duct .........................................................44

46. Motor and Exhaust Assembly ........................45

47. Front Bulkhead Assembly .............................48

48. Cylinder Belt ..................................................50

49. Cylinder Assembly ........................................51

50. Rear Seal ........................................................52

51. Cylinder Rollers .............................................54

52. Outlet Cover ...................................................54

53. Rear Bulkhead and Heater Box .....................55

54. Terminal Block or Power Cord ......................57

55. Cabinet ...........................................................59

56. Base ................................................................61

the expressed written consent of the publisher.

505035 1

Section 6 – Adjustments

57. Leveling Legs .................................................63

58. Burner Flame (Gas Models) ...........................64

Section 7 – Test Procedures

59. Drive Motor ...................................................65

60. Burner System Operation (Gas Models) ........68

61. Electrical Circuit to Ignition System

(Gas Models) ..................................................69

62. Gas Valve Coils Check (Gas Models) ...........69

63. Sensor Check (Gas Models) ...........................70

64. Igniter Check (Gas Models) ...........................70

65. Thermal Fuse (Electric Models) ....................71

66. Heater Assembly (Electric Models) ...............71

67. Cycling or Limit Thermostat .........................71

68. Fabric Selector Switch ...................................72

69. Timer Contacts (Nonmetered Models) ..........72

70. Accumulator and Timing Motor

(Metered Models) ...........................................73

71. Door Switch ...................................................74

72. Push-to-start Switch .......................................74

Section 8 – Internal Wiring of Dryer Motor

Switch .....................................................................75

Section 9 – Wiring Diagrams

Models HDE007*A, SDE007*A and UDE007*A

Schematic...............................................................78

Connection Diagram..............................................79

Models HDE107*A, SDE107*A and SDE307*A

Schematic...............................................................80

Connection Diagram..............................................81

Models HDE107*C, SDE0107*A1500 and SDE307*A1500

Schematic...............................................................82

Connection Diagram..............................................83

Models HDG009*A, SDG009*A and UDG009*A

Schematic...............................................................84

Connection Diagram..............................................85

Models HDG109*A, SDG109*A and SDG309*A

Schematic...............................................................86

Connection Diagram..............................................87

Model HD109*C

Schematic...............................................................88

Connection Diagram..............................................89

Model SDE007*A1500

Schematic...............................................................90

Connection Diagram..............................................91

Models SDE407*A and SDE507*A

Schematic...............................................................92

Connection Diagram..............................................93

Models SDE407*A1500, SDE407*D1500 and SDE507*A1500

Schematic...............................................................94

Connection Diagram..............................................95

Model SDE607*A

Schematic...............................................................96

Connection Diagram..............................................97

Models SDE607*A1500, SDE607*C, SDE607*C1500, SDE607*D and SDE607*D1500

Schematic...............................................................98

Connection Diagram..............................................99

Model SDE707*A

Schematic.............................................................100

Connection Diagram............................................101

Model SDE707*A1500

Schematic.............................................................102

Connection Diagram............................................103

Models SDG409*A and SDG509*A

Schematic.............................................................104

Connection Diagram............................................105

Model SDG409*D

Schematic.............................................................106

Connection Diagram............................................107

Model SDG609*A

Schematic.............................................................108

Connection Diagram............................................109

Models SDG609*C and SDG609*D

Schematic.............................................................110

Connection Diagram............................................111

Model SDG709*A

Schematic.............................................................112

Connection Diagram............................................113

2 505035

Section 1

Safety Information

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

safety of the operator, user, servicer, and those maintaining the machine.

a DANGER

Danger indicates the presence of a hazard that will cause severe personal injury, death, or substantial property damage if the danger is ignored.

a WARNING

Warning indicates the presence of a hazard that can cause severe personal injury, death, or substantial property damage if the warning is ignored.

a CAUTION

Caution indicates the presence of a hazard that will or can cause minor personal injury or property damage if the caution is ignored.

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

IMPORTANT

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

NOTE

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

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

WARNING

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

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

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

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505035 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 product, you must assume the responsibility for any personal injury or property damage which may result. The manufacturer will not be responsible for any injury or property damage arising from improper service and/or service procedures.

W008

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 [insert product].

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 505035

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.

D305P

505035 5

Section 2 Introduction

Model Identification

Information in this manual is applicable to these dryers.

Dryer Model

HDE007*A X X

HDE007*C HDE107*A X X HDE107*C HDG009*A X X HDG109*A X X HDG109*C SDE007*A X X SDE007*A1500 SDE107*A X X SDE107*A1500 SDE307*A X X SDE307*A1500 SDE407*A X X X SDE407*A1500 SDE407*D1500 SDE507*A X X X SDE507*A1500 SDE607*A X X X SDE607*A1500 SDE607*C SDE607*C1500 SDE607*D SDE607*D1500 SDE707*A X X X X SDE707*A1500 SDG009*A X X SDG109*A X X SDG309*A X X SDG409*A X X X SDG409*D SDG509*A X X X SDG609*A X X X SDG609*C SDG709*A X X X X UDE007*A X X UDG009*A X X

* ADD LETTER TO DESIGNATE COLOR. L - Almond W - White

Nonmetered Model

Metered Model

Electronic Display Control

Card Reader Ready

Card Reader Installed

Electric Heat

Gas Heat

6 505035

How Your Dryer Works

LINT

FILTER

Section 2 Introduction

CYLINDER

HEATER

DUCT

EXHAUST

FAN

D287SE3A

GAS

VALVE

AIR DUCT

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.

505035 7

Section 2 Introduction

Notes

8 505035

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 appropriate model wiring diagram for aid in testing dryer components.

1. MOTOR DOES NOT RUN

POSSIBLE CAUSE TO CORRECT

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

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.

Doesn’t start, or motor just hums. Motor is dead, will not run. • Refer to Paragraph 59 to check start switch, start

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.

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

• Check both fuses for electric models.

• Refer to Paragraph 59 to check start switch and start

windings.

windings, and main windings.

If protector cycles repeatedly, refer to Paragraph 2.

• Remove dust or lint and spray with “SLYDE,” No. 131P4, to clean and lubricate.

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• Replace motor if shaft is locked up.

Loose motor wire harness connection block. • Firmly press connection block onto motor switch. Broken, loose, or incorrect wiring. • Refer to appropriate wiring diagram in SECTION 9. Power cord is miswired. • Refer to appropriate wiring diagram for the correct

wiring. Refer to SECTION 9.

505035 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. UNIT STOPS IN CYCLE; QUITS AFTER THE FIRST FEW LOADS; HAS A BURNING SMELL; CYCLES ON MOTOR THERMAL PROTECTOR

POSSIBLE CAUSE TO CORRECT

Incorrect Voltage. • See 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 appropriate wiring diagram in SECTION 9. Motor switch functions inoperative.

• Refer to Paragraph 59 to check switch and windings.

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

10 505035

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. 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 29. 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.

• Check cylinder rollers for binding.

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• Check cylinder seals and glides for wear or damage. Broken, weak or disconnected idler lever spring. • Replace or reconnect spring. Refer to Figure 30. Belt routed on wrong side of idler lever. • Reroute belt. Refer to Figure 29. Oil on cylinder. • Wipe oil from cylinder. Belt is “inside out.”•Reinstall belt with ribbed surface against cylinder. Idler arm is binding. • Add grease between idler arm and motor mount.

• Replace idler arm 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 arm. • Replace idler arm.

4. MOTOR DOES NOT STOP

POSSIBLE CAUSE TO CORRECT

Incorrect wiring to motor switch. • Refer to appropriate wiring diagram in SECTION 9. Motor centrifugal switch sticky or plugged with

lint.

• Remove dust or lint and spray with “SLYDE,” Part No.

131P4, to clean and lubricate. Inoperative door switch. • Test switch and replace if inoperative. Inoperative timer – nonmetered models. • Test timer and replace if inoperative. Refer to Figure 51.

505035 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. 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. A 240 Volt dryer uses two

fuses. Make sure both fuses are good. Temperature selector switch set at FLUFF, or

• Reset or test switch and replace if inoperative.

inoperative. 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 (Paragraph 62) and replace if inoperative. Gas Models: Inoperative sensor. • Test sensor (Paragraph 40, step C) and replace if

inoperative.

Gas Models: Inoperative igniter. • Test igniter (Paragraph 64) and replace if inoperative. 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 appropriate wiring diagram in SECTION 9.

12 505035

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.

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

POSSIBLE CAUSE TO CORRECT

No power to power leads on valve. • Check timer, selector switch, thermostats, motor switch,

and wiring.

Sensor failed with contacts open. • Replace sensor. Igniter broken or open. • Replace igniter.

7. BURNER IGNITES AND GOES OUT REPEATEDLY – GAS MODELS

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. Weather hood flapper restricted.

• Refer to Installation Instructions (supplied with dryer) for exhaust requirements.

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

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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 (Paragraph 62) and replace appropriate coils.

8. IGNITER GLOWS BUT BURNER DOES NOT IGNITE – GAS MODELS

POSSIBLE CAUSE TO CORRECT

Sensor failed in closed position. • Replace sensor. Open secondary coil or holding coil. • Replace gas valve (in-warranty), or replace coils (out-of-

warranty). Refer to Paragraph 62.

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.

505035 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.

9. 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 58. 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 10.

Gas models: Sensor contact closing • Replace sensor (Paragraph 40, step C) or adjust burner

flame. Refer to Paragraph 58.

Inoperative cycling thermostat. • Test thermostat and replace if inoperative. Inoperative timer. • Test timer and replace if inoperative. Broken, loose, or incorrect wiring. • Refer to appropriate wiring diagram in SECTION 9.

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10. 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 42. Air leak around loading door. (Door not sealing due

• Replace seal or catch.

to damaged seal or inoperative door catch.) Inoperative thermistor. • Test thermistor and replace if inoperative. 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 505035

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.

11. HEATER ASSEMBLY OR BURNER DOES NOT SHUT OFF

POSSIBLE CAUSE TO CORRECT

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

Motor does not stop. • Refer to Paragraph 4. Incorrect wiring. • Refer to appropriate wiring diagram in SECTION 9. Heater assembly shorted. • Remove heater assembly and check for short.

12. CLOTHES DO NOT DRY

• Test switch and replace if inoperative.

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POSSIBLE CAUSE TO CORRECT

Heater assembly does not heat or burner does not

• Refer to Paragraph 5.

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. Heat selector switch set on FLUFF or inoperative. • Reset switch, or test and replace the switch if 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 9. 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 4 inch water column, ask Gas Company to correct.

Improper belt installation (Low RPM). • Check for proper installation. Refer to Figure 29.

505035 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.

13. 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. Seal between upper and lower air ducts.

16 505035

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.

14. GROUND WIRES FROM BLOCK TO REAR BULKHEAD AND FROM REAR BULKHEAD TO CONTROL HOUSING (Electric Models Only) Refer to Figure 1

GROUND

WIRES

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D234SE3B

Figure 1

15. GROUND WIRES FROM POWER CORD TO REAR BULKHEAD AND FROM REAR BULKHEAD TO CONTROL HOUSING. CHECK WALL RECEPTACLE POLARITY (Gas Models Only)

Refer to Figure 2

GROUND

NEUTRAL

GROUND

WIRES

V.A.C.

D236SE3A

NEUTRAL

SIDE

115±12

V.A.C.

115±12

V.A.C.

Figure 2

505035 17

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.

16. METERED AND NONMETERED MODELS – GROUND WIRES FROM REAR BULKHEAD TO ACCUMULATOR BRACKET OR TIMER (DEPENDING ON MODEL) AND FROM CABINET TOP TO CONTROL PANEL

Refer to Figure 3.

GROUND

WIRE

W001R1

GROUND

SCREW

D047KE1A

TIMER

XXX VAC

3 WATT

GROUND

WIRE

GROUND

TERMINAL

D341SE3A

GROUND

D098GE3C

WIRES

Figure 3

18 505035

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

ACCESS

PANEL

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

17. ACCESS PANEL

Refer to Figure 4 a. While supporting the access panel, remove two

screws from bottom edge of access panel.

b. Gently lower the access panel to disengage

locators from bottom edge of front panel.

c. Remove access panel.

18. CONTROL PANEL AND CONTROLS (METERED AND NONMETERED)

Refer to Figure 5 a. Remove two control panel attaching screws and

lay panel face down on protective padding on cabinet top.

b. Disconnect all wires to fabric selector switch,

push-to-start switch and indicator light and remove ground clip and screw holding ground wire to cabinet top and control panel.

PANEL

ATTACHING

SCREWS

D302SE3B

Figure 4

NOTE: Refer to appropriate wiring diagram when reconnecting wires.

c. Loosen setscrew holding switch knob to shaft

and pull knob off shaft.

d. Remove knurled nut holding fabric selector

switch to panel and remove switch.

e. Remove hex nut from push-to-start switch and

remove switch.

f. Squeeze locking tabs on indicator light and pull

light out from back of panel.

505035 19

Section 5 Service Procedures

FABRIC SELECTOR

SWITCH

LOCKWASHER

SCREW

CONTROL PANEL AND

BRACKET ASSEMBLY

SET

SCREW

KNURLED

NUT

KEPS NUT

SCREW

CONTROL

HOOD

SCREW

CONTROL

HOOD

REAR COVER

LOCKWASHER

CAP SCREW

PUSH-TO-START

SWITCH ASSEMBLY

SWITCH KNOB

ASSEMBLY

HEX NUT

GRAPHIC

OVERLAY

CABINET

TOP

INDICATOR

LIGHT

D310PE3A

Figure 5

CONTROL PANEL, CONTROL HOOD AND CONTROLS

(METERED AND NONMETERED MODELS)

20 505035

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

19. GRAPHIC OVERLAY

Refer to Figure 5 a. Removal

(1) Remove two control panel attaching screws

and lay panel face down on protective padding on cabinet top.

(2) Loosen setscrew holding switch knob to

switch shaft. Refer to Figure 5.

(3) Remove knurled nut holding fabric selector

switch to panel.

NOTE: Lockwasher must be between fabric selector switch and control panel when installing switch. Refer to Figure 5.

(4) Remove hex nut from push-to-start switch. (5) Disconnect wires from switches and

indicator lights.

NOTE: Refer to appropriate wiring diagram when rewiring switches and indicator light.

(6) Remove control panel overlay by peeling it

from control panel frame.

c. Remove four screws holding timer and plate to

timer case.

NOTE: When reinstalling timer plate, lockwasher must be between head of screw and plate.

d. Pull timer and plate out of timer case as far as

wires will permit.

e. Remove ground wire from ground terminal on

timer. Refer to Figure 3.

f. Disconnect wires from timer.

NOTE: Refer to appropriate wiring diagram when rewiring timer.

g. Remove two screws holding timer to plate.

Refer to Figure 6.

NOTE: Control panel overlay has an adhesive backing.

b. Installation

NOTE: Before removing protective backing from new overlay, check fit of overlay to control panel frame. Switch holes are the locating guides.

(1) Once panel overlay is fitted to the front of

control panel frame, carefully peel protective backing from the left end of panel overlay and press into place.

(2) Remove rest of protective backing from

panel overlay and firmly press overlay into place on control panel frame.

20. TIMER (Nonmetered Models)

a. Refer to Figure 6 for timer removal. b. Loosen setscrew holding timer knob to timer

shaft and remove knob.

505035 21

Section 5 Service Procedures

TIMER PLATE

ASSEMBLY

TIMER KNOB

ASSEMBLY

TIMER

KEPS

NUT

DRYING TIME

105

CONTROL

HOOD

LOCKWASHER

CAP

SCREW

TIMER

CASE

OFF

SET

SCREW

CABINET

TOP

INSTRUCTION

STICKER

LOCKWASHER

SCREW

CARRIAGE

SCREW

BOLT

D341PE3A

Figure 6

NONMETERED TIMER

22 505035

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

21. ACCUMULATOR (Metered Models)

Refer to Figure 7 a. Insert key in service door lock on top of meter

case and unlock door.

b. Lift rear of service door approximately 45° off

meter case to disengage notched tabs with internal rib at top of meter case.

NOTE: When reinstalling service door, front end of door must be inserted at about a 45° angle in order to engage notched tabs with internal rib at top of meter case.

c. Remove right mounting screw and slide

accumulator bracket back. Once left mounting screw is over the keyhole opening, pull accumulator bracket up and out of meter case.

ACCUMULATOR

ATTACHING SCREWS

NOTE: When reinstalling accumulator bracket, push it completely forward before replacing the right mounting screw.

d. Disconnect accumulator wires at connectors.

NOTE: Refer to appropriate wiring diagram when reconnecting wires.

e. Remove ground screw holding green ground

wire to accumulator mounting bracket.

f. Remove two screws and lockwashers holding

accumulator to mounting bracket.

GROUND

WIRE

GROUND

SCREW

KEYHOLE

OPENING

ACCUMULATOR

LEFT

MOUNTING

SCREW

RIGHT

MOUNTING

SCREW

ACCUMULATOR

BRACKET

D047SE3A

Figure 7

METERED ACCUMULATOR

505035 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.

W001R1

22. ELECTRONIC CONTROL

Refer to Figure 8

IMPORTANT: Due to the sensitivity of the electronic control, careful handling is required. As a precautionary measure, we recommend using a ground wrist strap when handling the electronic control. Wrist strap, cord and alligator clips are designed to carry away any electrostatic charge from your body and to direct charge to an available ground. By using this static protection device, potential electrostatic discharge problems associated with handling of electronic control will be minimized. Always handle electronic control by its metal edges. If a wrist strap is not available, touch dryer while it is plugged in before handling control to dissipate any charge.

NOTE: New control is supplied in special anti-static packaging material. While holding control by its metal edges, remove control from packaging material.

a. Remove two control panel attaching screws.

Lay control panel assembly face down on protective padding.

b. Press in on locking tabs and unplug harness

disconnect blocks from backside of electronic control assembly.

NOTE: DO NOT pull on wires. Instead, hold board near appropriate disconnect block and unplug by pulling in disconnect block.

c. Remove four screws holding electronic

controls assembly to backside of control panel.

d. Place the old control in the anti-static

packaging material that the new control was supplied in.

e. While holding new control by its metal edges,

carefully peel off protective plastic coating from front side of control. Then place control in opening of control panel and fasten control down with four screws.

f. Follow wiring diagram and reconnect wires to

new control.

IMPORTANT: It is important to take care when handling the original control. It must be carefully placed in the packaging material which was removed from new control. If control is not wrapped properly, warranty credit will not be issued.

24 505035

CONTROL AND SHIELD

Section 5 Service Procedures

CONTROL

PANEL

SCREW

CONTROL

HOOD

NUT

LOCKWASHER

SCREW

CONTROL HOOD

REAR PANEL

LOCKWASHER

CAP SCREW

GRAPHIC

OVERLAY

D340PE3A

Figure 8

CONTROL PANEL, CONTROL HOOD AND CONTROLS

(ELECTRONIC CONTROL MODELS)

505035 25

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

23. COIN DROP

a. Single Coin Drop Removal

(1) Unlock and open service door.

NOTE: If screw type lock is used, the retainer bracket must be removed from inside meter case.

(2) Disconnect wire harness from coin drawer

switch and disconnect coin drop at disconnect plugs.

(3) Press in on locking tabs of service door

switch and remove switch from bracket on meter case, as shown in Figure 9.

SERVICE

DOOR SWITCH

METER

CASE

LOCKING

TAB

(4) Use a 7/16 inch socket with No. 310P4 1/4

inch Ratchet Extension Tool and remove two locknuts holding coin drop to front of meter case. Refer to Figure 10.

(5) Lift back end of coin drop and pull straight

back until bottom edge of drop’s front face plate falls behind the coin drawer housing.

(6) Carefully lift complete coin drop straight

up and out of meter case.

b. Single Coin Drop Installation

Reverse removal procedures for installation.

NO. 310P4

1/4" RATCHET

EXTENSION

7/16"

SOCKET

LOCKNUT

TOOL

1/4"

RATCHET

SINGLE

COIN DROP

SWITCH

BRACKET

W408SE1B

FRONT OF

METER CASE

W485SE1B

Figure 10

Figure 9

26 505035

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

24. METER CASE (Metered Models)

a. Remove two control panel attaching screws and

lay panel face down on protective padding on cabinet top. Refer to Figure 5.

b. Disconnect all wires to components, and

remove ground clip and screw holding ground wire to cabinet top and control panel. Refer to Figure 3.

NOTE: Refer to appropriate wiring diagram when reconnecting wires.

c. Insert key in service door lock on top of meter

case and unlock door. Refer to Figure 7.

d. Lift rear of service door approximately 45° off

meter case to disengage notched tabs with internal rib at top of meter case. Refer to Figure 7.

NOTE: When reinstalling service door, front end of door must be inserted at about 45° angle in order to engage notched tabs with internal rib at top of meter case.

e. Disconnect wires from accumulator. Refer to

Figure 7.

h. Remove nut, lockwasher and screw holding

meter case to right end of control hood. Refer to Figure 8.

i. While supporting the lower access panel,

remove two screws from bottom edge of access panel. Refer to Figure 4.

j. Gently lower the access panel to disengage

locators from bottom edge of front panel.

k. Remove two screws holding bottom tabs on

front panel to dryer cabinet. Swing front panel away from dryer to disengage hold-down clips and locators from cabinet top. Refer to Figure 11.

NOTE: Refer to appropriate wiring diagram when reconnecting wires.

f. Remove ground screw holding green ground

wire to accumulator mounting bracket. Refer to

FRONT PANEL

ATTACHING SCREWS

D333SE3A

Figure 7.

g. Remove two cap screws holding meter case to

Figure 11

cabinet top. Refer to Figure 7.

505035 27

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

DOOR

SWITCH

TABS

D240SE3A

Figure 12

l. Disconnect wires from door switch. Refer to

Figure 12.

NOTE: Refer to appropriate wiring diagram when rewiring switch.

CABINET TOP

HOLD-DOWN SCREWS

NOTE: Accumulator and hardware must be removed prior to raising cabinet top to a vertical position. Refer to Figure 7.

m. Remove two cabinet top hold-down screws.

Refer to Figure 13.

n. Lift cabinet top to a vertical position by hinging

it on the rear hold-down brackets. Refer to Figure 14.

REAR

HOLD-DOWN

BRACKETS

D253SE3A

Figure 14

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

o. Carefully withdraw the wire harness through

hole in cabinet top and lift the entire cabinet top assembly off the rear hold-down brackets. Refer to Figure 14.

p. Lay the cabinet top assembly flat, remove

carriage bolts, bracket, gasket and nuts holding meter case to cabinet top and remove meter

D252SE3A

Figure 13

28 505035

case.

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

25. TIMER CASE (Nonmetered Models)

a. Remove two control panel attaching screws and

lay panel face down on protective padding on cabinet top. Refer to Figure 5.

b. Disconnect all wires from components and

remove ground clip and screw holding ground wire to cabinet top and control panel. Refer to Figure 3.

NOTE: Refer to appropriate wiring diagram when reconnecting wires.

c. Remove four screws holding timer and plate to

timer case. Refer to Figure 6.

d. Pull timer and plate out of timer case as far as

wires will permit. Refer to Figure 6.

e. Remove ground wire from ground terminal on

timer. Refer to Figure 3.

f. Disconnect wires from timer. Refer to Figure 6.

NOTE: Refer to appropriate wiring diagram when rewiring timer.

g. Remove cap screw, lockwashers and nut

holding timer case to control hood. Refer to Figure 6.

h. While supporting the access panel, remove two

screws from button edge of access panel. Refer to Figure 4.

i. Gently lower the access panel to disengage

locators from bottom edge of front panel.

j. Remove two screws holding bottom tabs on

front panel to dryer cabinet. Refer to Figure 11. Swing front panel away from dryer to disengage hold-down clips and locators from cabinet top.

k. Disconnect wires from door switch. Refer to

Figure 12.

NOTE: Refer to appropriate wiring diagram when rewiring switch.

l. Remove two cabinet top hold-down screws.

Refer to Figure 13.

m. Lift cabinet top to a vertical position by hinging

it on the rear hold-down brackets. Refer to Figure 14.

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

n. Carefully withdraw wire harness through hole

in cabinet top and lift the entire cabinet top assembly off the rear hold-down brackets. Refer to Figure 14.

o. Lay the cabinet top assembly flat and remove

two carriage bolts and nuts holding front of timer case to cabinet top. Refer to Figure 6.

p. Remove screw holding rear of case to cabinet

top and remove case. Refer to Figure 6.

505035 29

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Unimac UDG009*A Parts Diagram

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