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Alliance Laundry Systems SE3930, Service Manual

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Alliance Laundry Systems SE3930 Service Manual Download Page 39

53273

39

Section 4 Service Procedures

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

WARNING

© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT

To Test Drive Motor

Refer to Figure 30

1. Remove motor.
2. Disconnect wires from motor switch.

NOTE: Refer to appropriate wiring diagram when 
rewiring motor switch.

3. Put test meter probes on terminals 4 and 5. Meter 

should read approximately one ohm on ohm scale.

4. Put test meter probes on terminal 4 and motor 

frame. Meter should register “no reading” or 
infinite.

5. Put test meter probes on terminal 5 and motor 

frame. Meter should register “no reading” or 
infinite. 

6. Put test meter probes on terminals 4 and 6. Meter 

should register “no reading” or infinite. Manually 
flex the centrifugal switch in motor and meter 
should read approximately two ohms on ohm 
scale.

7. Put test meter probes on terminals 1 and 2. Meter 

should register “no reading”. Manually flex the 
centrifugal switch in motor and meter should read 
“zero ohms.

Figure 30

DRY838S

Motor

Switch

Drive

Motor

Summary of Contents for SE3930

Page 1: ...www comlaundry com Part No 53273R3 January 2002 Service Commercial Dryers Metered and Nonmetered SE SG and JE JG Series Refer to Page 6 for Model Numbers ...

Page 2: ...rvice 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 In...

Page 3: ...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...

Page 4: ...TANT 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 re...

Page 5: ...ms also recommends contacting an authorized technician and using authorized factory parts 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 ...

Page 6: ...om 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 ...

Page 7: ...ystems LLC DO NOT COPY or TRANSMIT 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 ...

Page 8: ...ted 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 DRY14S ...

Page 9: ...t have an electrical fuse 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 in...

Page 10: ... 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 Inoperative motor overload protector Replace drive motor POSSIBLE CAUSE TO CORRECT Motor drive pulley loose Tighten setscrew Refer to Figure 32 Broken cylinder belt Replace belt Cylinder belt is upside dow...

Page 11: ...BRIC 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 s...

Page 12: ...EPEATEDLY GAS MODELS 8 IGNITER GLOWS BUT BURNER DOES NOT IGNITE 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 ...

Page 13: ... 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 Burner flame improperly adjusted Replace sensor Adjust burner flame Inoperative high low or low limit thermostat Test thermostat and replace if inoperative Inoperative timer Test timer ...

Page 14: ...ANSMIT 11 HEATING ELEMENT OR BURNER DOES NOT SHUT OFF 12 CLOTHES DO NOT DRY 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 POSSIBLE CAUSE TO CORRECT Heating element does not heat or burner does not ignite Refer to Paragraph 5 Too much water in articles being drie...

Page 15: ...is 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 13 FRONT PANEL AND PANEL SEAL Refer to Figure 1 a Remove two screws from bottom edge of front panel b Swing bottom of panel away from dryer to disengage hold down clips and guide lugs from cabinet top c Disconnect wires...

Page 16: ...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 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 ...

Page 17: ...er 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 NOTE When rei...

Page 18: ...Loosen setscrew and pull timer knob off shaft 4 Remove two cabinet top hold down screws Figure 6 5 Lift cabinet top on rear hinges and support it against wall behind dryer 6 While holding timer remove three Phillips head screws holding timer and spacer to cabinet top and pull timer away from top to disconnect wires NOTE Lockwasher must be between head of screw and cabinet top Also spacer must be i...

Page 19: ...Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT c Nonmetered models with timer mounted on control panel 1 Refer to Figure 2 for timer removal NOTE Refer to appropriate wiring diagram when rewiring timer Figure 7 DRY958S Service Door B...

Page 20: ...etered Models Refer to Figure 8 1 Disconnect electrical service to dryer 2 Remove control panel set timer in position calling for heat and disconnect all wires except timer motor NOTE Refer to appropriate wiring diagram when rewiring switch 3 Set test meter to read ohms and apply meter probes to terminals a L1 and M to test drive motor circuit should get zero reading no reading in off b L1 and H t...

Page 21: ...ce door and accumulator 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 c Disconnect accumulator wires at connectors NOTE Refer to wiring diagram when reconnecting wires d Remove hex head ground screw holding green ground wire to accumulator mounting bracket e Remove two Phillips head screws and lockwashers holding accumul...

Page 22: ...panel support and or control hood b Disconnect wires from indicator light c Squeeze the locking tabs on back of indicator light together and push indicator light forward out of control panel IMPORTANT Pressing on center of lens when installing INDICATOR LIGHT may break lens Insert light into control panel by pressing firmly against trim To Test Push To Start Switch 1 Remove control panel and disco...

Page 23: ...ned ignition temperature b Pre Ignition Circuits 1 When the dryer thermostat calls for heat circuits are completed through the holding coil sensor booster coil and igniter 2 Both coils must be energized to open split coil valve 3 Once opened the holding coil can hold the valve open without assistance from the booster coil 4 The current shunted around the secondary coil by the sensor passes through...

Page 24: ...valve and will allow an additional 9 000 BTU s when opened 2 The dual input coil is energized independently through the low limit thermostat which opens at 130 F 3 This allows extra heat to warm the dryer cylinder quickly during the initial burn cycle 4 It is not energized again during the remainder of the cycle 22 BURNER SYSTEM COMPONENTS Gas Models Silicon Carbide Glow Bar Ignition a Complete Ga...

Page 25: ...er end of burner tube slightly to right and CAREFULLY remove burner tube and igniter assembly IMPORTANT Use care in removal so as not to damage or break igniter as it is very fragile IMPORTANT Handle igniter by grasping the white ceramic portions only DO NOT handle silicon carbide portion of igniter with hands or allow any oil grease or other foreign material to contaminate it Oil grease and other...

Page 26: ... igniter Refer to Paragraph b steps 1 through 4 2 Carefully remove igniter by spreading mounting clips with a Tru Arc pliers IMPORTANT Use care in removal so as not to damage or break igniter as it is very fragile IMPORTANT Handle igniter by grasping the white ceramic portions only DO NOT handle silicon carbide portion of igniter with hands or allow any oil grease or other foreign material to cont...

Page 27: ...b Set test meter to read AC voltage and apply meter probes to WHITE and RED wire terminals on dryer harness side of molex plug Meter should register line voltage in normal and permanent press selections but no reading in delicate or fluff If no voltage reading in normal or permanent press check 130 thermostat and fabric switch 3 If there is line voltage in Steps 1f 2b and 2c in delicate temperatur...

Page 28: ...ce Laundry Systems LLC DO NOT COPY or TRANSMIT Figure 13 DRY1213S Heat Shroud Sensor Burner Housing Limit Thermostat Shut Off Valve Dual Input Coil Hex Head Screw Igniter Molex Plug Dryer Valve Molex Plug Figure 14 DRY847S Mounting Clip Burner Tube Igniter ...

Page 29: ...ough Serial No S840L627 Insert key into access door lock and turn one quarter turn counterclockwise Refer to Figure 11 Starting Serial No S840L628 Remove Phillips head screw and washer holding access door to front panel Refer to Figure 11 2 Apply thumb pressure to right edge of door When door opens move door to the left to disengage from door supports Refer to Figure 11 3 Remove wires from thermos...

Page 30: ...power cord NOTE Reconnect ground wire into same hole in bracket when reinstalling power cord 26 LOADING DOOR a Remove screws holding hinges to door Refer to Figure 16 27 INNER AND OUTER DOOR PANELS AND DOOR HANDLE Refer to Figure 17 a Remove loading door Refer to Paragraph 26 b Remove screws holding handle to door and separate panels IMPORTANT Do not overtighten screws when reinstalling door handl...

Page 31: ...oor Panel Hinge Inner Door Panel Door Seal Door Striker Door Handle Figure 18 DRY1214S Guide Lug Hold Down Clip Door Switch Front Panel Seal Striker Catch Access Door Gas Models Phillips Head Screw Door Hinge Hex Head Screw Locknut Support Bracket Used through Serial No S70U4371 Access Door Key Used through Serial No S840L627 ...

Page 32: ...PORT BRACKET Refer to Figure 18 a Remove loading door Refer to Paragraph 26 b Remove front panel Refer to Paragraph 13 c Remove four Phillips head screws and locknut holding hinges to front panel Refer to Figure 18 NOTE Through Serial No S70U4371 Support bracket is removed with lower hinge Support bracket must be reinstalled when reassembling 33 HOLD DOWN CLIPS AND GUIDE LUGS Refer to Figure 18 a ...

Page 33: ...head screw and washer holding access door to front panel Refer to Figure 11 2 Apply thumb pressure to right edge of door When door opens move door to left to disengage from door supports Refer to Figure 11 3 Remove wires from thermostat 4 Remove screws holding thermostat to burner housing Refer to Figure 21 b Electric Models 1 Remove front panel Refer to Paragraph 13 2 Remove wires from thermostat...

Page 34: ...73 Section 4 Service Procedures Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT Figure 22 DRY1216S Hood Rear Cover Cover Attaching Screw Figure 23 DRY1217S Hood Rear Cover Cover Attaching Screw ...

Page 35: ...r removal 39 METER CASE Refer to Figure 24 a Remove front panel Refer to Paragraph 13 b Remove service door accumulator and timer motor assembly Refer to Paragraph 16 c Remove control panel Refer to Paragraph 14 step b item 2 d Remove two nuts lockwashers and bolts and one hex head cap screw right rear corner holding meter case to cabinet top e Remove nut lockwasher and screw holding meter case to...

Page 36: ...tical position by hinging it on the rear hold down brackets NOTE The cabinet top is self supporting h Remove two carriage bolts washers lockwashers and nuts holding front of timer case to cabinet top i Support timer case and remove screw holding gasket and rear of case to cabinet top and remove case 41 CABINET TOP Nonmetered Models a Remove front panel Refer to Paragraph 13 b Remove control panel ...

Page 37: ...ly withdraw wire harness through hole in cabinet top and remove the top g Remove brace from underside of cabinet top by swinging one end toward front or rear Refer to Figure 27 h Remove control hood when replacing the cabinet top Refer to Paragraph 43 NOTE Cabinet top may be raised and hinged on the rear hold down brackets or supported against wall behind unit while servicing the dryer 43 CONTROL ...

Page 38: ...Disconnect wires from thermostats NOTE Refer to appropriate wiring diagram when rewiring thermostats d Remove screws holding cover to housing 47 MOTOR AND EXHAUST ASSEMBLY a Remove front panel Refer to Paragraph 13 b Remove front air duct Refer to Paragraph 44 c Disconnect wires from thermostats NOTE Refer to wiring diagram when rewiring thermostats d Remove cylinder belt from idler and motor pull...

Page 39: ...rom motor switch NOTE Refer to appropriate wiring diagram when rewiring motor switch 3 Put test meter probes on terminals 4 and 5 Meter should read approximately one ohm on ohm scale 4 Put test meter probes on terminal 4 and motor frame Meter should register no reading or infinite 5 Put test meter probes on terminal 5 and motor frame Meter should register no reading or infinite 6 Put test meter pr...

Page 40: ...icing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 WARNING Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT 48 IMPELLER AND HOUSING a Remove motor and exhaust assembly Refer to Paragraph 47 b Remove exhaust fan cover Refer to Paragraph 46 c Hold motor pulley securely and unthread impeller from motor shaft right hand thread d Remove screw...

Page 41: ...nd housing Refer to Paragraph 46 47 and 48 b Disconnect wires from motor switch and ground wire from motor c Remove two motor clips holding motor to mounting bracket and lift motor out NOTE Refer to appropriate wiring diagram when rewiring switch d When replacing motor switch location should be at 10 o clock Refer to Figure 32 TO REMOVE MOTOR SWITCH e Remove two screws holding switch to motor f Di...

Page 42: ...talling seal tape it to the bulkhead in several places to hold in position while replacing seal strap and spring Remove tape after strap and seal are in place Seal must be under strap securely and be folded back under flanged edge around entire bulkhead Strap must be installed with cupped surface down against the seal to hold the felt seal more firmly in place on the bulkhead Also the seal can be ...

Page 43: ... one must be installed to cover the cylinder weld seam 54 REAR SEAL a Remove or raise cabinet top Refer to Paragraph 41 or 42 b Remove cylinder assembly Refer to Paragraph 53 c Unhook spring from seal strap Refer to Figure 37 NOTE When installing seal tape it to the bulkhead in several places to hold in position while replacing seal strap and spring Remove tape after strap and seal are in place Se...

Page 44: ...QQQQQ QQQQQQQQQ QQQQQQQQQ QQQQQQQQQ QQQQQQQQQ QQQQQQQQQ QQQQQQQQQ QQQQQQQQQ QQQQQQQQQ QQQQQQQQQ DRY864S ÀÀ ÀÀ ÀÀ ÀÀ QQ QQ QQ QQ Spring Terminal Block Bracket Phillips Head Screws Rear Bulkhead MountingBracket Seal Strap Cylinder Rollers Heat Shield Hex Head Screws Heater Box Phillips Head Screws Rear Bulkhead MountingBracket Figure 38 DRY1221S Retaining Ring Roller Shaft Roller Spacer Washer Nut W...

Page 45: ... or TRANSMIT 56 REAR BULKHEAD AND HEATER BOX a Remove cylinder assembly Refer to Paragraph 53 b Gas Models Remove burner housing Paragraph 23 and heat shroud Refer to Paragraph 24 c Electric Models Remove heating element Refer to Paragraph 37 d Remove two hex head screws holding bottom end of heater box to heat shield Refer to Figure 37 e Remove Phillips head screw holding rear bulkhead to termina...

Page 46: ... power and gas supply line if present and move dryer to gain access to rear of dryer e Remove screws holding heat shield to rear of cabinet Refer to Figure 40 58 REAR MOUNTING BRACKETS a Remove rear bulkhead and heater box Refer to Paragraph 56 b Remove screws holding mounting brackets to rear of cabinet Refer to Figure 40 59 CABINET AND BASE a Remove front panel Refer to Paragraph 13 b Remove cab...

Page 47: ... the off position c If dryer starts with indicator past the right hand vertical line of the off position follow instructions of step b above EXCEPT move indicator and plate in a counterclockwise direction one click at a time until indicator and right hand vertical line of off position match up 61 LEVELING LEGS a Thread locknuts Figure 41 down to heads of leveling legs then thread legs into dryer b...

Page 48: ...ted to ensure that the dryer is properly grounded W001R1 WARNING Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT f Allow dryer to operate for approximately five minutes Observe burner flame and loosen air shutter lockscrew Refer to Figure 42 g Turn air shutter to the right or left to obtain a soft uniform blue flame with orange tips A lazy orange tipped flame indicates lack of air A...

Page 49: ...TALLATION INSTRUCTIONS FOR 56412 OR 56413 GAS KITS Refer to Figure 44 a Through Serial No S840L627 Insert key into access door lock and turn one quarter turn counterclockwise Refer to Figure 11 b Starting Serial No S840L628 Remove Phillips head screw and washer holding access door to front panel Refer to Figure 11 WARNING This conversion kit is to be installed by AUTHORIZED DEALERS or DISTRIBUTORS...

Page 50: ...from slot in burner housing to obtain enough clearance g Natural Mixed to L P Gas 56412 Gas Kit 1 Turn burner orifice spud out of orifice adapter and install No 51211 L P Burner Orifice metal stamped No 55 Refer to Figure 43 2 Reinstall burner tube tighten hex head screw and reconnect igniter leads 3 Remove vent screw and install No 53390 Block Open Plug 4 Install No 55753 Valve Converted Sticker ...

Page 51: ...Install No 56414 Valve Number Sticker to top side of gas valve so it covers the gas valve converted sticker Refer to Figure 39 5 Install No 56427 Natural Gas Stickers over the old sticker on rear of cabinet and apply No 53556 Change Over Sticker to inside of the loading door opening above the serial plate 6 Connect electrical service and open valve in gas supply line Start dryer and observe burner...

Page 52: ...anufactured with glow bar ignition are factory equipped for Natural Mixed gas operation No 56975 Natural Mixed to L P Gas Kit is available from your parts supplier This kit consists of No 56976 L P to Natural Mixed Gas Kit is available for field conversion This kit consists of 67 ORIFICE INFORMATION 1 53390 Block Open Plug and Gasket 1 55753 Valve Converted Sticker 1 56426 L P Gas Sticker 1 56977 ...

Page 53: ...Remove inner burner orifice from gas valve body then install No 56977 Burner Orifice metal stamped No 53 Torque new burner orifice to 15 inch pounds 1 7 Nm 4 Install burner orifice adapter removed in step two on gas valve Torque orifice adapter to 15 inch pounds 1 7 Nm 5 Remove the vent screw and install No 53390 Block Open Plug and Gasket 6 Install No 55753 Valve Converted Sticker to top side of ...

Page 54: ...ker on rear of cabinet and apply No 56980 Change Over Sticker to inside of the loading door opening above the serial plate 8 Install gas valve assembly into dryer and connect union nut 9 Open shut off valve in gas supply line and check all pipe connections for gas leaks 10 Connect electrical service to dryer 11 Start dryer and observe burner flame through access door opening Adjust air shutter to ...

Page 55: ...tart 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 WARNING Copyright Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT Section 7 Internal Wiring of Dryer Motor Switch Figure 47 DRY869S Main Winding Start Winding Overload Protector BLU BLK ORG 4 3 5 4 5 1 2 ...

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