Speed Queen SG4990 Parts Diagram

Commercial

Dryers

Metered and Nonmetered

SE-SG and JE-JG Series

Refer to Page 6 for Model Numbers

Service

www.comlaundry.com

Part No. 53273R3

January 2002

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. Motor Overload Protector Cycles

Repeatedly ......................................................10

3. Motor Runs But Cylinder Does Not Turn ......10

4. Motor Does Not Stop .....................................10

5. Heating Element Does Not Heat Or Burner

Does Not Ignite ..............................................11

6. Igniter Does Not Glow (Gas Supply Sufficient)

– Gas Models .................................................12

7. Burner Ignites and Goes Out Repeatedly

– Gas Models .................................................12

8. Igniter Glows But Burner Does Not Ignite

– Gas Models .................................................12

9. Heating Element or Burner Shuts Off

Prematurely ....................................................13

10. Heating Element or Burner Repeatedly Cycles

Off On Limit Thermostat ...............................13

11. Heating Element or Burner Does Not

Shut Off ..........................................................14

12. Clothes Do Not Dry .......................................14

Section 4 – Service Procedures

13. Front Panel and Panel Seal ............................15

14. Control Panel .................................................16

15. Timer ..............................................................17

To Test Timer Contacts (Nonmetered

Models) ...........................................................20

16. Service Door, Accumulator And Timing Motor

Assembly (Metered Models) ..........................21

To Test Accumulator and Timing Motor

(Metered Models)............................................21

17. Fabric Switch .................................................22

18. Push-To-Start Switch .....................................22

To Test Push-To-Start Switch.........................22

19. Indicator Light ...............................................22

To Test Fabric Switch.....................................22

20. Burner System Operation ...............................23

21. Ignition System Features ...............................24

22. Burner System Components – Gas Models

– Silicon Carbide (Glow Bar) Ignition ...........24

To Test Dual Input Coil..................................24

To Test Gas Valve Coil Assembly..................25

To Test Electrical Circuit to Ignition System .27

To Test Igniter (Glow Bar).............................27

To Test Sensor (Bi-Meter Switch)..................27

23. Burner Housing ..............................................29

24. Heat Shroud ...................................................29

25. Terminal Block or Power Cord ......................29

26. Loading Door .................................................30

27. Inner and Outer Door Panels And

Door Handle ...................................................30

28. Door Striker ...................................................30

29. Door Seal .......................................................30

30. Lint Filter .......................................................32

31. Striker Catch ..................................................32

32. Door Hinge and Support Bracket ...................32

33. Hold-down Clips And Guide Lugs ................32

34. Door Switch ...................................................32

To Test Door Switch.......................................32

35. High, Low to Low Limit Thermostat .............33

36. Limit Thermostat ...........................................33

37. Heating Element ............................................33

38. Control Hood Rear Cover ..............................35

39. Meter Case .....................................................35

40. Timer Case .....................................................36

41. Cabinet Top (Nonmetered Models) ...............36

42. Cabinet Top (Metered Models) ......................37

43. Control Hood .................................................37

44. Front Air Duct ................................................37

45. Exhaust Duct ..................................................38

46. Exhaust Fan Cover .........................................38

47. Motor and Exhaust Assembly ........................38

To Test Drive Motor.......................................39

48. Impeller and Housing .....................................40

49. Motor .............................................................41

50. Motor and Idler Pulley Assemblies ...............41

51. Front Bulkhead Assembly .............................42

52. Cylinder Belt ..................................................42

53. Cylinder Assembly ........................................43

54. Rear Seal ........................................................43

the expressed written consent of the publisher.

53273 1

(continued)

55. Cylinder Rollers and Roller Shafts ................43

56. Rear Bulkhead and Heater Box ......................45

57. Heat Shield .....................................................46

58. Rear Mounting Brackets ................................46

59. Cabinet and Base ............................................46

Section 5 – Adjustments

60. Timer Knob Indicator JE2870 and JG2880 ...47

61. Leveling Legs .................................................47

62. Burner Flame (Gas Models) ...........................47

Section 6 – Gas Burner Conversion Procedures

63. Conversion Kits – For Single Input Gas Dryers

Equipped with No. 56225 Gas Valve .............49

64. Orifice Information ........................................49

65. Installation Instructions for 56412 or 56413

Gas Kits ..........................................................49

66. Conversion Kits – For Dual Input Gas Dryers

Equipped with No. 56279 Gas Valve .............52

67. Orifice Information ........................................52

68. Installation Instructions for 56975 or 56976

Gas Kits ..........................................................53

Section 7 – Internal Wiring of Dryer Motor

Switch .....................................................................55

2 53273

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.

W006R1

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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

W001R1

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 dryer.

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 53273

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.

DRY912P

Nameplate

53273 5

Section 2 Introduction

Model Identification

Information in this manual is applicable to these dryers.

Electric Gas

JE2870 SE3930 SE4670 SE4730 SE4732 SE4830 SE4930

Dual Input

SG4680 SG4990 SG4890

Single Input

JG2880 SG3940 SG4690 SG4790 SG4792 SG4910

6 53273

How Your Dryer Works

Section 2 Introduction

DRY14S

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.

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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. 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.

W001R1

• Check both fuses for electric models.

Loading door not closed or inoperative door switch. • Close door or test switch and replace if inoperative. Motor overload protector has cycled. • Wait two or three minutes for overload protector to reset.

If protector cycles repeatedly. Refer to Paragraph 2.

Timer improperly set. • Reset timer. Inoperative motor switch. • Test switch and replace if inoperative. Start circuit not completed. • Press start switch button, or test switch and replace if

inoperative.

Inoperative motor. • Test motor and replace if inoperative. Inoperative timer - nonmetered models. • Test timer and replace if inoperative. Inoperative accumulator - metered models. • Test accumulator and replace if inoperative. Accumulator not being activated. • Install slide extension. Broken, loose, or incorrect wiring. • Refer to appropriate wiring diagram. Motor centrifugal switch sticky or plugged with

lint.

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

53273 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. MOTOR OVERLOAD PROTECTOR CYCLES REPEATEDLY

POSSIBLE CAUSE TO CORRECT

Low 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.

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.

W001R1

• Check cylinder seals and glides for wear or damage.

Inoperative motor overload protector. • Replace drive motor.

3. MOTOR RUNS BUT CYLINDER DOES NOT TURN

POSSIBLE CAUSE TO CORRECT

Motor drive pulley loose. • Tighten setscrew. Refer to Figure 32. Broken cylinder belt. • Replace belt. Cylinder belt is upside down or twisted. • Install properly. 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.

• Check cylinder seals and glides for wear or damage.

Broken or disconnected idler lever spring. • Replace or reconnect spring. Refer to Figure 32.

4. MOTOR DOES NOT STOP

POSSIBLE CAUSE TO CORRECT

Inoperative door switch. • Test switch and replace if inoperative. Inoperative timer – nonmetered models. • Test timer and replace if inoperative. Inoperative accumulator - metered models. • Test accumulator and replace if inoperative. Incorrect wiring. • Refer to appropriate wiring diagram.

10 53273

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 ELEMENT DOES NOT HEAT OR BURNER DOES NOT IGNITE

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. • See Installation Instructions (supplied with dryer) for

exhaust requirements.

Blown house fuse or tripped circuit breaker. • Check fuses or circuit breakers. FABRIC switch set at FLUFF, or inoperative. • Reset or test switch and replace if inoperative. Timer improperly set - nonmetered models. • Reset timer. Inoperative limit thermostat. • Test thermostat and replace if inoperative. Electric Models: Inoperative heating element. • Replace element. Gas Models: Insufficient gas supply. • Open partially closed gas shut-off valve, or correct low

gas pressure.

Inoperative drive motor switch. • Test switch and replace if inoperative. Gas Models: Inoperative gas valve coils. • Test coils and replace if inoperative. Gas Models: Inoperative igniter. • Test igniter and replace if inoperative. Gas Models: Inoperative sensor. • Test sensor and replace if inoperative. Inoperative high, low or limit thermostat. • Test thermostat and replace if inoperative. Inoperative timer - nonmetered models. • Test timer and replace if inoperative. Inoperative accumulator - metered models. • Test accumulator and replace if inoperative. Broken, loose, or incorrect wiring. • Refer to appropriate wiring diagram.

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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 for electrical circuit. Refer to “To Test Electrical

Circuit to Ignition System” on page 27.

Sensor failed with contacts open. • Replace sensor. Igniter broken or open. • Replace igniter. Gas Valve - Open booster or holding coils. • Replace gas valve (in-warranty).

• Replace coils (out-of-warranty).

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7. BURNER IGNITES AND GOES OUT REPEATEDLY – GAS MODELS

POSSIBLE CAUSE TO CORRECT

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

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)

• Replace coils (out-of-warranty).

No or insufficient gas supply. • Check gas supply and pressure.

12 53273

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. HEATING ELEMENT OR BURNER SHUTS OFF PREMATURELY

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. • See Installation Instructions (supplied with dryer) for

exhaust requirements.

Gas Models: Insufficient gas supply. • 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” in this manual to convert burner.

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

terminals. If heating element heats or burner ignites when jumper wire is connected. Refer to Paragraph 10.

Gas models: Sensor contact opening prematurely.

• Replace sensor. Adjust burner flame.

Burner flame improperly adjusted. Inoperative high, low or low limit 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.

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10. HEATING ELEMENT 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.

Clogged lint filter. • Remove and clean lint filter. Lint in internal dryer ductwork. • Disassemble dryer and clean ductwork. Lint 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. Air leak around loading door. (Door not sealing

• Replace seal or catch.

properly against outer door seal due to damaged seal or inoperative catch.)

Air leak at front or rear cylinder seal. • Check and replace seal if necessary.

53273 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.

11. HEATING ELEMENT OR BURNER DOES NOT SHUT OFF

POSSIBLE CAUSE TO CORRECT

Inoperative motor switch. • Test switch and replace if inoperative. Motor does not stop. • Refer to Paragraph 4 Incorrect wiring. • Refer to appropriate wiring diagram.

12. CLOTHES DO NOT DRY

POSSIBLE CAUSE TO CORRECT

Heating element does not heat or burner does not

• Refer to Paragraph 5.

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

dryer load.

Improper or inadequate exhaust system. • See Installation Instructions (supplied with dryer) for

exhaust requirements.

Heating element or burner shuts off prematurely. • Refer to Paragraph 9.

W001R1

14 53273

Section 4

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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Guide

Striker

Catch

Access Door

(Gas Models)

Access Door Key

(Used through

Serial No. S840L627)

Door

Hinge

Phillips Head

Screw

Lug

Hex Head

Screw

Hold-Down

Clip

Door

Switch

Front Panel

Seal

Support Bracket

(Used through Serial

No. S70U4371)

Locknut

DRY1214S

Figure 1

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.

b. Swing bottom of panel away from dryer to

disengage hold-down clips and guide lugs from cabinet top.

c. Disconnect wires from door switch.

IMPORTANT: Electrical test procedures in this manual are performed by using a volt-ohm meter. Tests can also be performed using a multimeter or

NOTE: Refer to appropriate wiring diagram when

reconnecting switch. any other electrical testing equipment with which the service person is familiar.

d. Remove front panel seal from flange around

inside of door opening.

13. FRONT PANEL AND PANEL SEAL

Refer to Figure 1 a. Remove two screws from bottom edge of front

NOTE: Be sure seal is properly positioned when

installing on front panel.

panel.

53273 15

Section 4 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

14. CONTROL PANEL

Refer to Figure 2 a. Models JE2870 and JG2880. Refer to

Figure 2.

(1) Pull timer knob off shaft. (2) Pull fabric switch knob off shaft. (3) Remove two control panel assembly

screws and lift assembly off control hood

(4) Disconnect all wires to fabric switch, push-

to-start switch and timer.

(5) Remove screws holding end caps to control

panel. Refer to Figure 2 for removal of components.

Fabric

Switch

(Electric

Models)

Fabric

Switch

(Gas

Models)

Timer

b. All models except JE2870 and JG2880. Refer

to Figure 3.

(1) Loosen set screw holding fabric switch

knob to shaft and pull knob off shaft.

(2) Remove two control panel assembly

screws and lift assembly off panel support.

(3) Disconnect all wires for fabric switch,

push-to-start switch and indicator light.

NOTE: Refer to appropriate wiring diagram when

reconnecting wires.

(4) Refer to Figure 3 for removal of

components.

IMPORTANT: Pressing on center of lens when

installing indicator light may break lens. Insert light

into control panel by pressing firmly against trim.

Start

Switch

Control

Hood

Control

Panel

End Cap

Hex

Nut

Panel

Assembly

Screw

Fabric Switch

Knob

Timer

Attaching

Screw

DRY843S

Timer

Knob

Figure 2

16 53273

Section 4 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.

EARLY MODELS LATE MODELS

Panel

Assembly

Screw

Fabric

Switch

Control

Panel

Control

Panel

Assembly

Screw

Start

Switch

Fabric

Switch

Control

Hood

W001R1

Start

Switch

Fabric

Switch

Knob

Hex Nut

Indicator

DRY1207S

Light

15. TIMER a. Nonmetered models with timer mounted in

timer case.

(1) Refer to Figure 4 for timer removal. (2) Loosen setscrew holding timer knob to

timer shaft and remove knob.

(3) Remove four screws and lockwashers

holding timer and plate to timer case.

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

(4) Pull timer and plate out of timer case as far

as wires will permit.

(5) Remove screw, lockwasher and locknut

holding ground wire to timer plate.

(6) Disconnect wires from timer.

NOTE: Refer to appropriate wiring diagram when rewiring timer.

(7) Remove three screws and lockwasher

holding timer to plate.

Figure 3

Fabric

Switch

Knob

Indicator

Light

Control

Hood

Hex

Nut

DRY1208S

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

Timer

Attaching

Screw

Timer

Knob

Screws

Lockwasher

Timer

Plate

Timer Plate

Timer

Attaching

Screw

Figure 4

Case

DRY1209S

53273 17

+ 38 hidden pages

Speed Queen SG4990 Parts Diagram

Table of Contents

Model Identification