American Dryer Corp. WDA-385 manuale d’uso

American Dryer Corporation 88 Currant Road Fall River , MA 02720-4781 T elephone: (508) 678-9000 / Fax: (508) 678-9447 E-mail: techsupport@amdry .com 121396MFM/tf ADC Part No. 450179 ADG-385/WDA-385 Service Manual 1996 thru 1998[...]

Retain This Manual In A Safe Place For Future Reference American Dryer Corporation products embody advanced concepts in engineering, design, and safety . If this product is properly maintained, it will provide many years of safe, efficient, and trouble-free operation. ONLY properly licensed technicians should service this equipment. OBSER VE ALL SA[...]

IMPOR T ANT YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPL Y and THE GAS SUPPL Y or THE STEAM SUPPL Y BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INST ALLA TION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) ST ANDARDS. W ARNING The dryer must never be [...]

DO NOT ST ORE OR USE GASOLINE OR OTHER FLAMMABLE V APOR AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE . FOR YOUR SAFETY DO NOT DR Y MOP HEADS IN THE DR YER. DO NOT USE DR YER IN THE PRESENCE OF DR Y CLEANING FUMES. IMPOR T ANT PLEASE OBSERV E AL L SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation/operat[...]

T able of Contents SECTION I Important Information A. Safety Precautions .......................................................................................................................................... 3 SECTION II Maintenance A. Cleaning .....................................................................................................[...]

SECTION VI Trouble Shooting A. Phase 5 Coin System Diagnostics ................................................................................................................ 38 B. No Heat Condition ........................................................................................................................................ 41 C. No Star[...]

3 SECTION I A. Safety Precautions 1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. 2 . Purchaser/user should consult the local gas supplier for proper instructions to be followed in the event the user smells gas. The instructions should be posted in a prominent location. 3 . Dryer[...]

4 A. Cleaning A program and/or schedule should be established for periodic inspection, cleaning, and removal of lint from various areas of the dryer , as well as throughout the duct work system. The frequency of cleaning can best be determined from experience at each location. Maximum operating efficiency is dependent upon proper air circulation. T[...]

5 AS REQUIRED In cleaning and care of the cabinet, avoid using harsh abrasives. A product intended for the cleaning of appliances is recommended. B. Adjustments SUGGESTED INTER V AL FUNCTION 6 MONTHS Motor and drive belts should be examined. Cracked or seriously frayed belts should be replaced. T ighten loose belts when necessary , and check belt a[...]

6 Installation should be performed by competent technicians in accordance with local and state codes. In the absence of these codes, installation must conform to applicable AMERICAN & NA TIONAL ST ANDARDS: National Fuel Gas Code ANSI Z223.1-LA TEST EDITION and/or National Electric Code ANSI/NFP A No. 70-LA TEST EDITION A. Enclosur e, Air Supply[...]

7 B. Electrical and Gas Requirements It is your responsibility to have ALL electrical connections made by a properly licensed and competent electrician to assure that the electrical installation is adequate and conforms with local and state regula- tions or codes. In the absence of such codes, ALL electrical connections, material, and workmanship m[...]

8 4 . The dryer should be operated through one complete cycle to assure that no future adjustments are necessary and that ALL components are functioning properly . 5 . For 3Ø motor models check the electric service phase sequence while the dryer is operating. Check to see if the blower wheel is rotating in the proper direction. Looking from the fr[...]

9 A. Control Panel Lifting the control door will reveal the control panel assembly . Opening the control panel will allow access to the major components which include the coin acceptors, computer board, and keypad. The coin acceptor sends the signal to the computer that a coin has been inserted. The keypad inputs to the computer what temperature ha[...]

10 E. Lint Coop The lint coop is the bottom portion of the dryer behind the lint door . Inside the lint coop is the lint screen which prevents lint from entering the exhaust system. The lint screen should be kept clean at all times. On the WDA- 385/ADG-385 models there are two (2) lint screens. The lint screens should be cleaned on a daily basis. L[...]

11 G. T umbler Bearing and Pulley Arrangement The tumbler bearing and the pulley arrangement is located (viewing from the rear of the dryer) approximately at the upper center of the dryer . The arrangement consists of a pulley, bearing box, and bearing which serve to adjust, drive, and support the tumbler . The bearing box has various nuts and bolt[...]

12 K. Sail Switch The sail switch consists of a round damper plate on a lever arm which acts like an actuator for a micro-switch. When the air blower comes on, it draws air through the burner . This creates a negative pressure inside the burner box, and this negative pressure pulls in the round damper which activates the sail switch. If there is im[...]

13 L. Motor Contactor (1Ø Motor) This motor contactor used on single phase dryers, is located in the rear of the machine, in the Electrical Panel Box. It's purpose is to transfer the higher voltage to the motor when the contactor coil voltage has been achieved. The contactor will have a filter ca- pacitor across the coil connections. This hel[...]

14 SECTION V Servicing ALL electrical/mechanical service or repairs should be made with the electrical power to the dryer disconnected (power off). W ARNING: PERSONAL INJUR Y COULD RESUL T The information provided in this section should not be misconstrued as a device for use by an untrained person making repairs. Service work should be performed b[...]

15 T o Replace Keypad (refer to illustration above) 1 . Discontinue power to dryer . 2 . Swing control panel open and unplug keypad ribbon from computer board. 3 . Peel the keypad from the front of the control panel taking care to avoid scratching the panel. 4 . Clean any adhesive residue from the panel. 5 . Peel off paper backing from new keypad. [...]

16 T o Replace Coin Acceptor 1 . Discontinue power to dryer. 2 . Swing control panel open. 3 . Unplug optic switch harness connector. 4 . Remove one (1) screw holding coin acceptor in place. 5 . Pull coin acceptor out gently . 6 . Reverse procedure for installing new acceptor. T o Remove Optic Switch 1 . Unplug optic switch connector . 2 . Remove s[...]

17 T o Replace Microprocessor T emperature Sensor Probe 1 . Discontinue power to dryer . 2 . Remove M.P . sensor bracket assembly from the dryer . A . Disconnect sensor bracket harness connector B . Loosen the two (2) phillips head screw securing the bracket assembly to the dryer and remove the bracket from the dryer . NOTE: DO NOT remove screws. 3[...]

18 A. Burner Controls (Gas)[...]

19 T o Replace Spark Ignitor 1 . Discontinue power to dryer . 2 . Disconnect HV connector and flame probe connection from ignitor . 3 . Disassemble ignitor from burner by removing the two (2) self-tapping screws. 4 . Reverse procedure for installing new ignitor probe. NOTE: Before re-establishing power to dryer , visually check the following: (see [...]

20 T o T est and Adjust Gas (W ater Column) Pressure There are two (2) types of devices commonly used to measure water column pressure. They are spring/ mechanical-type gauges and manometers. The spring/mechanical-type gauge is not recommended, because it is easily damaged and not always accurate. A manometer is simply a glass or transparent plasti[...]

21 T o Replace Burner T ubes 1 . Discontinue power to dryer . 2 . Close shut off valve in gas supply line. 3 . Disconnect gas valve wiring. 4 . Break union connection before gas valve. 5 . Loosen and remove two (2) screws securing pipe bracket to the burner . 6 . Remove gas valve / manifold assembly from the dryer . 7 . Remove the screws securing t[...]

22 B. Thermostats and T emperatur e Sensor T o Replace Hi-Limit Thermostat (330º) This thermostat is an important safety device serving as an added protection against failure of the air sail switch to open in the event of motor failure or reduced air flow condition. IMPORT ANT : Under no circumstances should heat circuit safety devices ever be dis[...]

23 T o Remove The T emperature Sensor or High Heat Protector A. High Heat Protector 1 . Discontinue power to dryer . 2 . Open and remove lint door . 3 . Locate temperature sensor bracket assembly under the basket. Loosen the two phillips head screws. Disconnect the connector . 4 . Slide bracket toward rear of the machine and remove the bracket asse[...]

24 C. Sail Switch Assembly The sail switch is a heat circuit safety device which controls the heat circuit ONL Y . When the dryer is operating and there is proper air flow the sail switch damper pulls in and closes the sail switch. Providing all the other heat-related circuits are functioning properly . If an improper air flow occurs, the sail swit[...]

25 T o Adjust Sail Switch 1 . Operate the installed dryer normally to verify that the heat system is fully operational. 2 . Open the main dryer door . 3 . Manually depress the door switch actuator . 4 . While continuing to depress the door switch actuator , and with the door open, start the dryer . 5 . If the heat system is not activated in 15 seco[...]

26 NOTE: Be careful not to lose the plastic washer on the hinge pin. 5. Re-assemble in the reverse steps. T O INST ALL NEW MAIN DOOR GLASS 1. Remove main door assembly from dryer (follow main door removal procedure). 2. Lay main door on a flat surface with front of door face down. 3. Remove glass and clean all old sealant of f main door . This area[...]

27 T o Replace Front Panel 1 . Discontinue power to dryer . 2 . Disconnect main door switch wiring from inside control wire box. NOTE: Identify location of each wire for correct reinstallation. 3 . Follow procedure for removal of main door assembly . 4 . Open control (service) door . 5 . Open lint door . 6 . Remove the screws securing the front pan[...]

28 E. T umbler and Bearing Assembly (Remove backguard to access assembly) T o Replace T umbler Pulley 1 . Remove backguard. 2 . Loosen v-belts, then rotate pulley and roll v-belts out of grooves. 3 . Loosen two (2) set screws on the pulley and pull the pulley off the shaft. 4 . Reverse procedure for installing new tumbler pulley . NOTE: Check belt [...]

29 T o Replace Rear T umbler Bearing 1. Remove tumbler pulley (follow tumbler pulley removal procedure). 2 . Remove the four (4) bolts securing the bearing box to the back of the dryer . 3 . Loosen screws securing bearing to shaft. IMPOR T ANT : LOCTITE® NOW BEING USED. Ef fective January 24, 1996, LOCTITE® is being used on the ADG-385/WDA-385 dr[...]

30 NOTE: Check tension of belts and alignment of tumbler before operating dryer . T o Replace The Front T umbler Bearing 1 . Remove tumbler pulley and bearing box (follow "T o Replace The Rear T umbler Bearing" steps 1 through 4). 2 . Loosen set screws on front tumbler bearing. IMPOR T ANT : LOCTITE® NOW BEING USED. Ef fective January 24[...]

31 F . Idler and Bearing Assembly (Remove backguard to access assembly .) T o Replace Idler Pulley 1 . Remove backguard. 2 . Loosen v-belts, then rotate pulley and roll v-belts out of grooves. 3 . Loosen the two (2) set screws on the pulley and pull off the shaft. 4 . Reverse procedure for installing new idler pulley . NOTE: Check tension and align[...]

32 T o Replace Idler Bearing NOTE: The bearings in the idler arm assy . are pressed on the shaft. If you do not have means of pressing the bearings on to the shaft, the idler arm assy . complete is what you should purchase. 1 . Remove idler pulley (follow "T o Replace Idler Pulley"). 2 . Remove idler arm. A . Remove two (2) bolts securing[...]

33 H. T umbler (basket) T umbler Alignment (vertical) 1 . Discontinue power to dryer . 2 . Remove backguard. 3 . Loosen the four (4) hex head bolts on the sides of the bearing box (2 on each side). 4 . Back off jam nuts on the two (2) allen head adjustment screws. 5 . T urn the screws clockwise evenly to raise the number or counter clockwise evenly[...]

34 5 . Lateral adjustment (viewing from the rear) A . Loosening (by turning counterclockwise) the left hand adjustment bolt and tightening (by turning clockwise) the right hand adjustment bolt will shift the basket to the left. B . Loosening (by turning counterclockwise) the right hand adjustment bolt and tightening (by turning clockwise) the left [...]

35 IMPOR T ANT : LOCTITE® NOW BEING USED. Ef fective January 24, 1996, LOCTITE® is being used on the ADG-385/WDA-385 dryer. LOCTITE® is being applied to ALL beaaring set screws, used on ALL basket (tumbler) shafts, ALL idler shafts, ALL impellor (fan/ blower) shafts, and ALL drive shaft bearings. A yellow label ( ADC Part No. 1 12801) is af fixe[...]

36 5 . Remove the tumbler and support through the front of the dryer . A . Remove the bolt in the center of the tumbler back wall. B . Loosen and remove the nuts and washers from the tumbler tie rods. Remove the rods. C . Replace either tumbler or tumbler support by reversing the procedure. 6 . Reassemble components into dryer by reversing steps 1 [...]

37 T o Replace V-Belts 1 . Loosen tension on V-Belts, so that they can easily be rolled of f pulleys. 2 . Replace V-Belts. 3 . Re-tighten V-Belts and adjust tension and alignment per previous instructions. J. Motor T o Replace Motor 1 . Discontinue power to dryer . 2 . Remove drive belt. 3 . Disconnect wiring harness from motor . 4 . Remove nuts an[...]

38 The information provided will help isolate the most probable components associated with the difficulty described. The experienced technician realizes, however , that a loose connection or broken or shorted wire may be at fault where electrical components are concerned...not necessarily the suspect component itself. ELECTRICAL P ART S SHOULD AL W[...]

39 3. " SEFL " - indicates rotational sensor circuit failure meaning that there is a fault somewhere in the basket (tumbler) rotation detection circuit, or the Phase 5 coin microprocessor controller (computer) program related to this circuit (PL01) is set incorrectly in the active mode ( SEn ) where the dryer is not equipped with the opti[...]

40 NOTE: If the dryer is started (the L.E.D. display indicator dots are on) and there are no outputs (heat and/or motor output L.E.D.'s are off) and the "dOOr" input L.E.D. is on, the fault is in the Phase 5 coin microprocessor controller (computer) itself. If the failure was elsewhere (i.e., dryer's door switch circuit) the L.E[...]

41 B. No Heat Condition The following procedure must be performed with the microprocessor controller (computer) display in the normal operating mode, and the heat indicator dot on, and the L.E.D. heat output light on. V oltage is 24 V AC unless otherwise specified. 1 . Check to see if DSI module fault indicator L.E.D. is on or flashing. If yes, ref[...]

42 4 . Check for voltage across TB#4 and TB#7. If voltage is evident, problem is defective burner hi-limit switch P/N: 130401 or the sail switch* P/N: 122200, or the harness connecting these two (2) devices to the terminal (block #4 and #2). 5 . Check for voltage across TB#3 and TB#7. If voltage is evident, problem is defective basket hi-limit swit[...]

43 C. No Start Condition Follow this test procedure, providing that the microprocessor controller is functioning where the display is in the normal operating mode and the motor indicator dot is on, and the L.E.D. motor output light is on. The voltage you should be reading is 24 V A C unless otherwise specified. 1 . Check to see if "dOOr" [...]

44 D. No Display Condition 1 . Check power supply . (dryer voltage 1 1 0v , 208v , 220v ...) 2 . Check for voltage across (L1) and (L2) of motor relay. (1 10v , 208v , 220v ...) For 3 phase machines, check across (L1) and (L3). If no voltage is evident, problem is bad wire(s) or termination from circuit breaker panel to top of motor contactor. 3 . [...]

45 5 . Check for voltage across the computer's 15-pin connector #7 and #13 (1 10v , 208v , 220v). If no voltage is evident, problem is bad wire or termination from the computer's 15-pin connector #7 and #13 to TB #6 and #8. If voltage is evident, problem is faulty computer .[...]

46 E. "dSFL" Display Condition When the display reads "dSFL" this condition indicates a fault in the microprocessor controllers heat circuit. This circuit includes the microprocessor controller , microprocessor temperature sensor (located in lint compartment) and wires to and from these two (2) points. 1 . Check to see if microp[...]

47 F . "dOOr" Display Condition When the display reads "dOOr ," this indicates that there is a fault (open circuit) somewhere in the microprocessor controller's door switch circuit. Includes the door switch, microprocessor controller and the wires to and from these two (2) points. Before following this test procedure, check[...]

48 A. Data Label Contact American Dryer Corporation When contacting American Dryer Corporation certain information is required to insure proper services/parts information from American Dryer . This information is on the data label located on the control door . When contacting American Dryer please have to model number and serial number handy . THE [...]

49 B. Using A Manometer How T o Use A Manometer 1 . W ith dryer in non-operating mode remove plug on the gas valve pressure tap. 2 . Attach plastic tubing to pressure tap. (fitting is supplied with manometer see illustration.) 3 . Attach manometer to dryer using magnet. NOTE: Place manometer in a position so that readings can be taken at eye level.[...]

50 C. L.E.D. Display Codes ACOn Accumulative Coin Adrt Maximum Auto Dryness Time AF At Amount for Assitional Time AGt Active Anti-wrinkle Guard Time AtIn Accumulative Time AtSt Amount to Start AUtO Automatic Mode bCLO Bad Coin Lockout bCrS Bad Coin Reset bU Z Buzzer(T one) ºCEL Degrees in Celsius CLCC Clear Left Coin Count Coin Coin Mode CrCC Clea[...]

51 D. Computer Logic and W iring Diagram 1 . Operator inserts coin. 2 . Operator enters desired selection(s) ... 3 . Information entered is sent to the micro-controller via the keyboard ribbon. 4 . The input information is sorted/processed and executed by the micro-computer chip. 5 . The micro-computer output signal activates the contactors and DSI[...]

This number is located on the top right hand corner of the diagram. It is a six (6) digit number followed by a letter to distinguish the version dates (see illustration). The wiring diagram on the next page is specifically for dryers manufactured at the time of publishing. Y o ur particular model will be different depending on the date of manufactu[...]

ADC 450179 1 - 01/08/98-50 2* 05/21/98-50[...]