American Dryer Corp. ADG-320D Service Procedures Download Page 1

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ADG-320D and ADG-330D

24 VAC Phase 5

Dual Microprocessor Controller (DMC)

Mechanical/Electrical

Service Procedures

American Dryer Corporation

88 Currant Road

Fall River, MA 02720-4781

Telephone: (508) 678-9000 / Fax: (508) 678-9447

e-mail: [email protected]

www.amdry.com

062094

ADC

Part No. 450303

Summary of Contents for ADG-320D

Page 1: ...Microprocessor Controller DMC Mechanical Electrical Service Procedures AmericanDryerCorporation 88 Currant Road Fall River MA02720 4781 Telephone 508 678 9000 Fax 508 678 9447 e mail techsupport amdry com www amdry com 062094 ADC PartNo 450303 ...

Page 2: ...__________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ Replacement parts can be obtained from your reseller or the ADC factory When ordering replacement parts from the factory you can FAX your order to ADC at 508 678 9447 or telephone...

Page 3: ...INE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE FOR YOUR SAFETY DO NOT DRY MOP HEADS IN THE DRYER DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYERS WARNING CHILDREN SHOULD BE SUPERVISED IF NEAR DRYER S IN OPERATION DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION CAUTION WARNING The ...

Page 4: ...d specified in the installation manual included with the dryer WARNING DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER OR SCREEN IN PLACE EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED The wiring diagram for the dryer is located in the front electrical control box area ...

Page 5: ...Computer 13 N To Replace Keyboard Touch Pad 14 O To Replace CoinAcceptor 15 P To Replace Either Motor Relay 15 Q Basket Tumbler Alignment Vertical 16 R Basket Tumbler Alignment Lateral 16 S To Replace Basket Tumbler and or Basket Tumbler Support 18 T ToReplaceBasket Tumbler SupportPillowBlockBearing 19 U To ReplaceBasket Tumbler SupportFlangeBearing 19 V ToReplace330º Burner Hi LimitSwitch Thermos...

Page 6: ...L E D Display Codes 44 SECTION VI PHASE 5 DUAL MICROPROCESSOR CONTROLLER DMC SYSTEM DIAGNOSTICS 45 A Diagnostic L E D Display FailureCodes 45 B L E D DisplayIndicators Dots 46 C Phase 5 DMC Computer Relay Output L E D Indicators 46 D Phase 5 DMC Computer Input Output L E D Indicators 47 SECTION VII PHASE 5 DUAL MICROPROCESSOR CONTROLLER DMC PROGRAMMING LIMITS 48 ...

Page 7: ...FABRICS IS HIGHLY COMBUSTIBLE THE ACCUMULATION OFLINTCAN CREATEAPOTENTIALFIRE HAZARD WARNING KEEPDRYERAREACLEARAND FREE FROM COMBUSTIBLE MATERIALS GASOLINE AND OTHER FLAMMABLE VAPORSAND LIQUIDS NOTE Suggested time intervals shown are for average usage which is considered six 6 to eight 8 operational running hoursperday DAILY beginning of each work shift Clean lint from baskets tumblers Inspect lin...

Page 8: ...pplyhouses 6 MONTHS In the cleaning of the dryer s cabinet avoid using harsh abrasives A product for the cleaning of appliances is recommended ALL bearings and setscrews should be checked to insure that they are tight B ADJUSTMENTS 7 DAYS AFTER INSTALLATION AND EVERY 6 MONTHS THEREAFTER Inspect bolts nuts screws bearing setscrews grounding connections nonpermanent gas connections unions shutoff va...

Page 9: ...r 2 Pull out the lint drawer 3 Open the control lint door two 2 1 4 turn locks one 1 on each side 4 Remove the control lint door 5 Reverse procedure to reinstall the control lint door C TO REMOVE GAS VALVE TRAIN ASSEMBLY 1 Discontinue power to the dryer 2 Close ALL gas shutoff valves in the gas supply line to the dryer 3 Remove the lint drawer and the control lint door from the dryer follow Lint D...

Page 10: ...ors at the back of the control box 5 The control box may now be taken out of the dryer completely Depending on the service function to be performed the control box can be attached to the two 2 female hinges on the right side of the dryer cabinet NOTE If the control box is attached to the dryer cabinet the three 3 wiring harnesses mentioned in Step 4 DO NOT need to be disconnected 6 Reverse procedu...

Page 11: ...ove the lint drawer switch box assembly remove the two 2 screws inside the lint drawer area that secure box to the side of the lint coop 5 Disassemble the lint drawer box assembly from the dryer by disconnecting the two 2 harness connectors from the box assembly 6 Remove the two 2 Phillips head screws securing the cover to the switch mounting bracket 7 Disassemble the switch from the box by removi...

Page 12: ...OT get pinched between the sensor bracket and the holder 8 Reestablish power to the dryer H TO REMOVE REPLACE BELT 1 Discontinue power to the dryer 2 Remove the lint drawer and the control lint door from the dryer follow Lint Drawer and Control Lint Door Removal Procedures in Section A and Section B 3 If the top basket tumbler is being serviced remove the control box assembly and belt guard from i...

Page 13: ...he motor mount These nuts are at the underside of the motor mount assembly IMPORTANT DO NOT remove these four 4 bolts 8 Remove the lower half of the rear split back guard panel to either the top or the bottom basket tumbler depending on which basket tumbler is being serviced 9 Remove the four 4 7 16 OD nuts which secure the impellor fan blower cover to the blower housing 10 Remove the two 2 7 16 O...

Page 14: ...2 setscrews on the impellor fan blower shaft bearing Be sure that these setscrews are securely in place 21 The impellor fan blower must now be adjusted centered in the blower housing Align the center of the motor shaft at impellor fan blower shaft bearing so that the center of the motor shaft is exactly 8 inches 20 32 cm from the left side panel a Once the impellor fan blower is properly centered ...

Page 15: ...haft The impellor fan blower cover will also now separate from impellor fan blower housing 9 Remove impellor fan blower lock nut right hand and lock washer securing the impellor fan blower to the motor shaft This can be done by turning the lock nut to the left with an adjustable wrench or more advisable with a 1 1 8 deep socket ratchet wrench in an effort to avoid damaging the lock nut 10 Align im...

Page 16: ... 4 nuts which secure motor to the motor mount loosened in Step 3 17 Make the necessary belt idler tension adjustment follow Belt Idler Tension Adjustment Procedure in Section K 18 Reverse Step 1 and Step 2 K BELT IDLER TENSION ADJUSTMENT 1 Discontinue power to the dryer 2 Remove the lint drawer the control lint door and the control box assembly from the dryer follow Control Box Removal Procedure i...

Page 17: ...Lint Drawer and Control Lint Door Removal Procedures in Section A and Section B 3 Remove screw in the lower right hand corner of the control panel securing panel to control box 4 Open control panel and disconnect ALL the harnesses the two 2 9 pin wire harness connectors the 3 pin connector wiring harness coming from coin acceptor optic switch es and the one 1 4 pin power wire harness connector tha...

Page 18: ...rawer Removal Procedures in Section A and Section B 3 Remove screw located in the bottom right hand corner of the control panel 4 Open the control panel and disconnect keyboard touch pad ribbon connector from the DMC computer by holding onto the blue ribbon connector and pulling outward 5 Remove the U shaped coin reject return holder located on the bottom of the keyboard touch pad by removing the ...

Page 19: ...eestablish power to the dryer P TO REPLACE EITHER MOTOR RELAY 1 Discontinue power to the dryer 2 Remove the lint drawer and the control door from the dryer follow Lint Drawer and Control Lint Door Removal Procedures in Section A and Section B 3 Remove screw located in the bottom right hand corner of the control panel and open control panel 4 Either the relay can be removed with the control box in ...

Page 20: ...s of the bearing box and the two 2 jam hex nuts on the Allen head adjustment screws 8 Check the belt tension and make the necessary adjustments follow Belt Idler Tension Adjustment Procedure in Section K 9 Reinstall the upper half of the rear split back guard panel removed in Step 2 10 Reestablish power to the dryer R BASKET TUMBLER ALIGNMENT LATERAL 1 Discontinue power to the dryer 2 Remove the u...

Page 21: ...To decrease gap L loosen turn counterclockwise CCW adjustment boltAand tighten turn clockwise CW adjustment bolt B 6 Tighten and secure both adjustment bolts and jam hex nuts 7 Tighten bearing bolts loosened in Step 3 8 Check belt tension and make the necessary adjustments follow Belt IdlerTensionAdjustment Procedure in Section K 9 Reinstall the upper half of the rear split back guard panel remove...

Page 22: ...bearing and flange bearing The two 2 setscrews on the flange bearing can be reached through the opening at the bottom of the bearing box 8 Remove the basket tumbler and support assembly from the front of the dryer If the basket tumbler cannot be removed freely clean the shaft area with emery cloth and spray with WD 40 or a similar lubricant Then with a block of wood against the shaft end strike th...

Page 23: ...o 2 sets of nuts washers and bolts securing the bearing to the bearing box support then remove the bearing 6 Reinstall bearing and hardware by reversing Step 3 through Step 5 7 Make the necessary vertical alignment and lateral alignment adjustments follow Basket Tumbler Vertical Alignment and Basket Tumbler Lateral Alignment Procedures in Section Q and Section R IMPORTANT Make sure proper belt adj...

Page 24: ... the shaft end strike the block of wood with a hammer or mallet to move shaft past any burrs made by the setscrews IMPORTANT DO NOT strike the shaft directly with a hammer 9 Remove the four 4 sets of nuts washers and bolts securing the bearing box assembly to the dryer Then remove the bearing box assembly 10 Remove the four 4 nuts securing the flange bearing to the dryer then remove the bearing fr...

Page 25: ...er and the control lint door follow Lint Drawer and Control Lint Door Removal Procedures in Section A and Section B 3 Remove the sail switch damper rod assembly from the dryer 4 Disassemble the sail switch bracket assembly from the dryer by removing the two 2 Phillips head screws located in the lint drawer area 5 Disassemble the sail switch from the mounting bracket by loosening and removing the t...

Page 26: ...the control lint door and the gas valve train assembly from the dryer follow Gas Valve Train Removal Procedure in Section C 2 Disassemble the DSI module bracket assembly from the gas valve train slide by removing the two 2 sets of nuts and washers securing the bracket to the gas valve train 3 Disconnect ALL wiring to the DSI module including the orange high voltage HV lead IMPORTANT Identifytheloc...

Page 27: ... at the inlet side of the gas valve b Remove the two 2 sets of nuts securing the manifold bracket to the gas valve train slide and disassemble valve manifold assembly from slide 4 Remove 1 2 street elbow from inlet side of gas valve 5 Remove manifold from gas valve 6 Remove pressure test line brass elbow from the gas valve pressure tap 7 Reverse Step 4 through Step 6 to install the new gas valve I...

Page 28: ...DE OFBRASS WHICH IS EASILYDAMAGED NOTE Consult factory when replacing orifice for elevations over 2 000 feet 609 6 meters 7 Reinstall the valve manifold assembly by reversing Step 4 through Step 6 8 Locate valve regulator adjustment cover Remove cover with slotted screwdriver install the L P valve stem spring kit then reinstall cover 9 Reinstall the gas valve train assembly removed in Step 3 NOTE ...

Page 29: ...r top Then remove the coin vault from the dryer 6 Install the new coin vault by reversing Step 5 DO NOT tighten the four 4 nuts they must be left loose at this time for the coin vault adjustment 7 Reinstall the front panel removed in Step 3 8 Tighten the four 4 coin vault hex nuts left loose in Step 6 9 Reinstall the coin box removed in Step 4 10 Reinstall the control box removed in Step 3 11 Rein...

Page 30: ... curing time of this adhesive is 24 to 36 hours 6 After the 24 to 36 hour curing period reinstall main door onto the dryer FF TO REPLACE MAIN DOOR GASKET 1 Open the main door completely 2 Remove ALL existing main door gasket material with a putty knife or similar device Make sure the door surface is as clean as possible 3 Apply a small bead of adhesive ADC P N 170730 ALL around the main door gaske...

Page 31: ...four 4 nuts securing hinge to back side of the front panel 5 Position the new hinge so that the part of the hinge that the main door is secured to is towards the front panel main door opening 6 Install hinge studs through the front panel holes and secure in place with the four 4 nuts removed in Step 4 7 Reinstall the main door switch housing removed in Step 3 8 Reverse Step 1 and Step 2 ...

Page 32: ...ESHOOTINGSHOULD BE PERFORMED BY A QUALIFIED PROFESSIONAL WARNING WHILE MAKINGREPAIRS OBSERVEALLSAFETYPRECAUTIONS DISPLAYED ON THE DRYERAND OR SPECIFIED IN THIS MANUAL A No light emitting diode L E D display 1 Service panel fuse blown or tripped breaker 2 Blown control circuit fuse 3AG 1 2 amp Slo Blo fuse 3 Failed Dual Microprocessor Controller DMC computer B Basket tumbler motor does not start DM...

Page 33: ...rawer circuit a Main door switch or lint drawer switch is out of proper adjustment b Loose connection in main door switch or lint drawer switch wiring c Failed main door switch or lint drawer switch G The dryer does not start and the DMC computer L E D display reads door 1 DMC door input L E D is off a Main door and or lint drawer is not properly closed b Failed main door switch c Failed lint draw...

Page 34: ...ldautomaticallybecanceled a Loose wire and or termination in sensor harness somewhere between the sensor bracket and the DMC computer b Failed DMC computer temperature sensor J DMC computer L E D display reads Hot The Hot display condition indicates a possible overheating condition The DMC computer monitors the temperature in the dryer at ALL times If the DMC computer detects that the temperature ...

Page 35: ...out of proper adjustment basket tumbler belt 2 Broken basket tumbler belt 3 Failed motor 4 Failure in the rotational sensor circuit a Failed rotational sensor b Loose connection or break between the rotational sensor and the DMC computer L DMC computer will not accept any or only accept certain keyboard touch pad entries 1 Failed keyboard touch pad label assembly 2 Failed DMC computer M DMC comput...

Page 36: ...nt or has failed b Sail switch damper is not closing or is fluttering 1 Lint drawer screen is dirty or clogged 2 Restriction in exhaust ductwork 2 Fault in burner hi limit circuit or thermostat 3 Fault in basket tumbler hi limit circuit or thermostat 4 Failed Direct Spark Ignition DSI module burner control 5 Failed DSI ignitor and or flame probe assembly Q No heat gas models only ignitor sparks bu...

Page 37: ...but electric oven is not operating 1 Fault in sail switch circuit a Sail switch is out of adjustment or has failed b Sail switch damper is not closing or is fluttering 1 Lint drawer screen is dirty or clogged 2 Restriction in exhaust ductwork 2 Fault in oven hi limit circuit or thermostat 3 Fault in basket tumbler hi limit circuit or thermostat 4 Failed oven contactor 5 Failed oven electric elemen...

Page 38: ...operly 7 Sail switch is fluttering restriction in exhaust gas and electric models only 8 Failed dual microprocessor controller DMC computer temperature sensor temperature calibration is inaccurate 9 Failed DMC computer temperature calibration is inaccurate 10 Failed burner oven hi limit gas and electric models only 11 Failed basket tumbler hi limit thermostat 12 Steam damper system steam models on...

Page 39: ...mbler tie rod 4 Broken basket tumbler support X Excessive noise and or vibration 1 Dryer is not leveled properly 2 Impellor fan blower is out of balance or broken 3 Loose basket tumbler tie rod 4 Basket tumbler is out of adjustment or adjustment bolts hardware are loose 5 Loose motor or motor mount assembly Y Basket tumbler turns too fast as compared to other baskets tumblers 1 Foreign object s ca...

Page 40: ...f there is no voltage the problem is bad wire s or termination s between the contactor and the terminal blocks 6 and 8 If voltage is present check for voltage across pins 1 and 4 of the computer 4 pin connector J12 6 If there is no voltage the problem is a bad wire s or termination s between terminal blocks 6 and 8 and the 4 pin connector J12 If voltage is present the problem is a faulty computer ...

Page 41: ...l switch If voltage is present on both terminals check for bad wire or termination on the red wire that leaves the sail switch and passes through the gas valve train connector to the TH terminal on DSI module If voltage is present on one 1 terminal of the sail switch replace the sail switch 4 Check for voltage across both terminals of the burner hi limit switch If voltage is present on both termin...

Page 42: ... from the burner hi limit switch through the J19 connector top basket tumbler or the J20 connector bottom basket tumbler to the sail switch If voltage is present on one 1 terminal of the burner hi limit switch replace this hi limit switch 5 Check for voltage across both terminals of the basket tumbler hi limit switch If voltage is present on both terminals check for bad wire or termination on the ...

Page 43: ...in 1 for the bottom basket tumbler If voltage is present on the heat out pin of the computer check for bad wire or termination on the red wire from the computer heat out which passes through the I O connector in the back of the computer box to the basket tumbler hi limit switch 4 If no voltage replace the computer F dOOr Condition NOTE The following sections must be performed with the appropriate ...

Page 44: ...r the wires or connectors leading to and from these two points 1 Check to see if the 1 8 amp fuse located on the computer is blown To verify check with an ohm meter If no continuity replace with ADC P N 136048 fuse If fuse repeatedly blows out refer to Step 4 2 Replace the temperature sensor ADC P N 880111 3 Discontinue power to the dryer Disconnect the 9 pin connector from the computer top basket...

Page 45: ...hen contacting American Dryer Corporation certain information is required to insure proper service parts information from ADC This information is on the data label located on the inside of the control door When contacting ADC please have the model number and serial number available ...

Page 46: ...cular model 4 TYPE OF HEAT This describes the type of heat for your particular dryer gas either natural gas or liquid propane L P gas electric or steam 5 HEAT INPUT for GAS DRYERS This describes the heat input in British Thermal Units per Hour Btu hr 6 ORIFICE SIZE for GAS DRYERS Gives the number drill size used 7 ELECTRIC SERVICE This describes the electric service for your particular model 8 GAS...

Page 47: ...olumn test gauge connection to gas valve pressure tap 1 8 N P T This pressure tap is located on the outlet manifold side of the valve b Start dryer With burner on the correct water column reading in inches would be Natural Gas 3 5 Inches 8 7 mb water column Liquid Propane L P Gas 10 5 Inches 26 1 mb water column 2 To Adjust Water Column W C Pressure natural gas only liquid propane L P gas must be ...

Page 48: ...Sensor Circuit Failure FAr Degree in Fahrenheit FILL No Cycle in Progress FLS Flash DisplayActive FrEE Free Dry Mode GdLY Anti Wrinkle Delay Time Gont Anti Wrinkle On Time Grd Anti Wrinkle ProgramActive HICd High Cool Down Hot Overheating Condition LCC Left Coin Count LCdE Left Coin Denomination LOCd Low Cool Down nbUZ No Buzzer Tone nFLS No Flash Display nGrd NoAnti Wrinkle nSEn No Rotational Sen...

Page 49: ... corrected IMPORTANT The Phase 5 DMC computer has its own internal heat sensing circuit fuse protection located on the back side of the Phase 5 DMC computer If a dSFL condition occurs check to see if this fuse has blown If it has DO NOT replace the entire microprocessor controller computer Replace only the fuse and do so only with a 1 8 amp Slo Blo fuse only NOTE Once the Phase 5 DMC computer dete...

Page 50: ...or Circuit Indicator This indicator dot is on whenever a cycle is in progress C PHASE 5 DMC COMPUTER RELAY OUTPUT L E D INDICATORS There are six 6 L E D indicators red lights located on the back side area of the Phase 5 DMC computer refer to the illustration on page 47 which are identified or labeled U upper and L lower for the appropriate circuit i e door motor or heat These L E D s indicate that...

Page 51: ...dots are on then the problem is elsewhere i e external of the Phase 5 DMC computer 3 MOTOR Output L E D Indicator a If the dryer is started and the motor is not operating yet the Phase 5 DMC computer display motor circuit indicator dot and dOOr input L E D indicator are on but the motor output L E D indicator is off then the fault is in the Phase 5 DMC computer itself If the motor is not operating...

Page 52: ... to 100º F 21º C to 38º C 0 to 9 5 degrees 1 degree 1 minute PL07 PP Drying Temperature 110º F to 150º F 43º C to 66º C 5 degrees 1 degree PL08 PP Cool Down Temperature PP Cool Down Time 70º F to 100º F 21º C to 38º C 0 to 9 5 degrees 1 degree 1 minute PL09 LCdE Left Coin Denomination 1 to 9999 1 PL10 rCdE Right Coin Denomination 1 to 9999 1 PL11 tFAS Time For Amount To Start 1 to 99 1 minute PL12...

Page 53: ...4 94 10 2 06 03 94 100 3 11 21 94 200 4 05 08 95 50 5 10 30 95 200 6 12 03 96 200 7 01 30 98 50 8 06 05 98 50 9 09 10 98 100 10 08 12 99 100 11 06 08 00 100 12 09 26 00 75 13 09 07 01 100 14 04 11 03 10 15 06 13 03 15 ...

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