American Dryer Corp. MDG-30 manual

W ARNING: For your safety the information in this manual must be followed to minimize the risk of fire or explosion or to prevent property damage, personal injury or death.  Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.  WH A T TO DO IF YOU SMELL GAS:  Do not try to light[...]

MDG-30 IMPOR T ANT NOTE TO PURCHASER Information must be obtained from your local gas supplier on the instructions to be followed if the user smells gas. These instructions must be posted in a prominent location near the dryer . FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any o[...]

W ARNING UNDER NO CIRCUMST ANCES should the door switch or the heat circuit devices ever be disabled. 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 T O ALLOW ACCESS FOR CLEANING , ADJUSTING , INST ALLA TION, OR TESTING OF ANY EQUIPME[...]

W ARNING The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJUR Y OR FIRE COULD RESUL T . IMPOR T ANT PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation manual included with the dryer . W ARNING DR YER MUST NEVER BE OPERA TED WITHOUT THE [...]

SECTION I IMPOR T ANT INFORMA TION ............................................................................... 3 A. Receiving and Handling ............................................................................................................... 3 B. Safety Precautions .......................................................................[...]

SECTION VII TROUBLESHOOTING ........................................................................................... 3 6 Microprocessor Controller (Computer) Models .............................................................................. 36 Mechanical Coin Models .............................................................................[...]

3 SECTION I IMPOR T ANT INFORMA TION A. RECEIVING AND HANDLING The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover (or optional box) as a means of preventing damage in transit. Upon delivery , the dryer and packaging, and wooden skid should be visually inspected for shipping damage. If any damage [...]

4 B. SAFETY PRECAUTIONS W ARNING: For your safety , the information in this manual must be followed to minimize the risk of fire or explosion or to prevent property damage, personal injury , or loss of life. W ARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY OR FIRE COULD R[...]

5 7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust ductwork, and area around the back of the dryer . The frequency of inspection and cleaning can best be determined from experience at each location. W ARNING: The collection of lint in the burner area and exhaust ductwork can create a potential f[...]

6 SECTION II SPECIFICA TIONS A. SPECIFICA TIONS GAS M AXI M U M CAPACI T Y (D RY W E I G HT) 3 0 lb s 13. 6 kg BASKET ( T U M BLER ) D I AM ET ER 30 ” 76. 2 cm BASKET ( T U M BLER ) D EPT H 30 ” 76. 2 cm BASKET ( T U M BLER ) MOT OR 1 /2 h p* 0. 37 3 kW DO O R O PEN I N G ( DI AMET E R ) 21- 1/ 2” 54. 61 cm BASKET ( T U M BLER ) V O LU M E 12[...]

7 NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or obligation. SPECIFICA TIONS - GAS ONL Y[...]

8 SECTION III INST ALLA TION PROCEDURES Installation should be performed by competent technicians in accordance with local and state codes. In the absence of these codes, the installation must conform to applicable American National Standards: ANSI Z223.1- LA TEST ED ITION (National Fuel Gas Code) or AN SI/NFP A NO. 70-LA TEST EDITION (National Ele[...]

9 B. LOCA TION REQUIREMENTS Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such codes or ordinances the location must conform with the National Fuel Gas Code ANSI.Z223.1 LA TEST EDITION, or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1- M91 (Nat[...]

10 C . D R YER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of 12-inches (30.48 cm) above the dryer  s outer top; except along the front of the dryer which may be closed if desired. NOTE: Allowances must be made for opening the control door . NOTE: Air considerations are[...]

11 D. FRESH AIR SUPPL Y REQUIREMENTS The air supply (make-up air) must be given careful consideration to assure proper performance of each dryer . An unrestricted source of air is necessary for each dryer . As a general rule, an unrestricted air entrance from the outdoors (atmosphere) of a minimum of 1-1/2 square feet (0.14 square meters) is requir[...]

12 E. EXHAUST REQUIREMENTS Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork will create excessive back pressure which results in slow drying, increased use of energy , and shutdown of the burner by the airflow (sail) switch, burner hi-limit, or lint chamber hi-limit protector thermostat. The d[...]

13 NOTE: As per the National Fuel Gas Code, Exhaust ducts for type 2 clothes dryers shall be constructed of sheet metal or other noncombustible material. Such ducts shall be equivalent in strength and corrosion resistance to ducts made of galvanized sheet steel not less than 0.0195-inches (26 gauge [0.05 mm]) thick. SINGLE DR YER VENTING IMPO[...]

14 If the length of the duct run or quantity of elbows used exceeds the above noted specifications, the cross section area of the ductwork must be increased in proportion to the number of elbows or duct run added. IMPOR T ANT : For extended ductwork runs, the cross section area of the duct can only be increased to an extent. For extended ductwork r[...]

15 MUL TIPLE DR YER (COMMON) VENTING HORIZONT AL VENTING If it is not feasible to provide separate exhaust ducts for each dryer , ducts for individual dryers may be channeled into a common main duct. Each dryer is provided with a back draft damper . The individual ducts should enter the bottom or side of the main duct at an angle not more than 45°[...]

16 IMPOR T ANT : For extended ductwork runs, the cross section area of the duct can only be increased to an extent. For extended ductwork runs, a professional heating, ventilating, and air-conditioning (HV AC) firm should be consulted for proper venting information. VER TICAL VENTING Illus. D MUL TIPLE DRYER VENTING (VERTICAL) The maximum length of[...]

17 IMPOR T ANT VENTING REMINDERS 1. Ductwork size and installation should be done by a qualified professional. 2. The dryer must be exhausted to the outdoors. 3. Ductwork should be routed as short as possible to the outdoors with as few elbows as possible. 4. A void 90° turns, use 30° or 45° turns instead. 5. The size of the ductwork must be a m[...]

18 F . ELECTRICAL INFORMA TION 1. Electrical 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 to local and state regulations or codes. In the absence of such codes, ALL electrical connections, materials,[...]

19 NOTE: Component failure due to improper voltage application will VOID THE W ARRANTY . 3. Grounding A ground (earth) connection must be provided and installed in accordance with state and local codes. In the absence of these codes, grounding must conform to applicable requirements of the National Electrical Code ANSI/NFP A NO. 70-LA TEST EDITION,[...]

20 If local codes permit, power to the dryer can be made by the use of a flexible U.L. listed power cord or pigtail (wire size must conform to rating of dryer), or the dryer can be hard wired directly to the service breaker panel. In both cases, a strain relief must be installed where the wiring enters the dryer . S i ng l e - P ha s e ( 1 ø ) El [...]

21 IMPOR T ANT : The dryer must be connected to the electric supply shown on the data label that is affixed to the upper left side panel area behind the top control (access) door . IMPOR T ANT : The wire size must be properly sized to handle the related current. W ARNING: Any damage done to dryer components due to improper voltage connections will [...]

22 G . GAS INFORMA TION It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the gas plumbing installation is adequate and conforms to local and state regulations or codes. In the absence of such codes, ALL plumbing connections, materials, and workmanship must conform to the applicable requireme[...]

23 2. T echnical Gas Data a . Gas Specifications * Measured at outlet side of gas valve pressure tap when gas valve is on. b. Gas Connections Inlet connection ---------- 1/2 N.P .T . Inlet supply size ---------- 1/2  N.P . T . (minimum) Btu/hr input (per dryer) - 90,000 (22,680 kcal/hr) 1 ) Natural Gas Regulation is controlled by the dryer ?[...]

24 3. Piping Connections ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LA TEST EDITION, or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P .] Gas) or LA TEST EDITION (for General Installation and Gas Plumbing), as well as local codes and ordinances and must be done [...]

25 Consistent gas pressure is essential at ALL gas connections. It is recommended that a 3/4-inch (19.05 mm) pipe gas loop be installed in the supply line servicing a bank of dryers. An in-line pressure regulator must be installed in the gas supply line (header) if the (natural) gas pressure exceeds 12.0 inches (29.9 mb) of water column (W .C.) pre[...]

26 H. PREP ARA TION FOR OPERA TION AND ST AR T -UP The following items should be checked before attempting to operate the dryer: 1. Read ALL  CAUTION ,  W ARNING , and  DIRECTION  labels attached to the dryer . 2. Check incoming supply voltage to be sure that it is the same as indicated on the dryer data label affixed to the upper[...]

27 I. PREOPERA TIONAL TESTS ALL dryers are thoroughly tested and inspected before leaving the factory . However , a preoperational test should be performed before the dryer is publicly used. It is possible that adjustments have changed in transit or due to marginal location (installation) conditions. 1. T urn on electric power to the dryer . 2. Ref[...]

28 NOTE: If computer program changes are required, refer to the computer programming section of the manual supplied with the dryer . 6. The dryer should be operated through one (1) complete cycle to assure that no further adjustments are necessary and that ALL components are functioning properly . BASKET (TUMBLER) COA TING The basket (tumbler) is t[...]

29 NOTES: 1 . If the Anti-W rinkle program is active, the light emitting diode (L.E.D.) display will continue to read donE, and the microprocessor controller (computer) will proceed through the Anti-W rinkle program until the maximum Active Guard Time has expired or until the door is opened, whichever comes first. The L.E.D. display wil[...]

30 b. Select T emperature The dryer will start, the light emitting diode (L.E.D.) display will read the temperature cycle selected, and the drying time portion of the L.E.D. display will read 00 and count upward as time elapses, or the vended time will count downward, depending on the program parameter setting. IMPOR T ANT : If the door is op[...]

31 K. SHUTDOWN INSTRUCTIONS If the dryer is to be shutdown (taken out of service) for a period of time, the following must be performed: 1. Discontinue power to the dryer either at the external disconnect switch or the circuit breaker . 2. Discontinue the heat supply: a . Discontinue the gas supply . 1) SHUT OFF external gas supply shutoff valve. 2[...]

32 SECTION IV SER VICE/P AR TS INFORMA TION A. SER VICE 1. Service must be performed by a qualified trained technician, service agency , or gas supplier . If service is required, contact the dealer from whom the Maytag equipment was purchased. If the dealer cannot be contacted or is unknown, contact the Maytag Co. for a dealer in your area. NOTE: W[...]

33 SECTION V W ARRANTY INFORMA TION A. RETURNING W ARRANTY CARDS 1. Before any dryer leaves the manufacturer  s test area, a warranty card is placed on the back side of the main door glass. These warranty cards are intended to serve the customer where we record the individual installation date and warranty information to better serve you should [...]

34 SECTION VI ROUTINE MAINTENANCE 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 ductwork system. The frequency of cleaning can best be determined from experience at each location. Maximum operating efficiency is dependent[...]

35 90 DA YS Inspect and remove lint accumulation in customer furnished exhaust ductwork system from dryer  s internal exhaust ducting. W ARNING: THE ACCUMULA TION OF LINT IN THE EXHAUST DUCTWORK CAN CREA TE A POTENTIAL FIRE HAZARD. W ARNING: DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILA TION AIR. W ARNING: INSPECT AND REMOVE ANY LINT ACCUMU[...]

36 SECTION VII TROUBLESHOOTING IMPOR T ANT : YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPL Y AND THE GAS 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. The information pro[...]

37 3. Failed microprocessor controller (computer). C . Drive motor operates okay for a few minutes, and then stops and will not restart... 1. Motor is overheating and tripping out on internal overload protector ... a . Motor air vents clogged with lint. b. Low voltage to the motor . c . Failed motor . d. Basket (tumbler) is binding, check for obstr[...]

38 a . Failed microprocessor temperature sensor . b. Failed microprocessor controller (computer). c . Broken wire or connection somewhere between the microprocessor controller (computer) and the microprocessor temperature sensor . H . Microprocessor controller (computer) display reads door... 1. Fault (open circuit) in door switch circuit... [...]

39 1. Direct Spark Ignition (DSI) ignitor and flame-probe are out of adjustment, reposition closer to the flame area. 2. Sail switch is fluttering... a . Lint screen is dirty . b. Restriction in exhaust ductwork. 3. Insuf ficient make-up air . 4. Failed ignitor and flame-probe assembly . 5. Failed DSI module. 6. Failed gas valve. N . Heating unit i[...]

40 4. Insuf ficient make-up air . 5. Poor air and gas mixture at burner , yellow or poor flame pattern; adjust gas burner air adjustment shutters. 6. Lint screen is not being cleaned on a regular basis or often enough. 7. Extractors (washers) are not performing properly . 8. Sail switch is fluttering, restriction in exhaust. 9. Failed microprocesso[...]

41 4. Basket (tumbler) is out of adjustment or adjustment bolts (hardware) are loose. 5. Failed basket (tumbler) support. 6. Loose motor mount. 7. Failed idler or basket (tumbler) bearings. 8. V -belts either too tight or too loose. S. Main burners are burning with a yellow flame... 1. Burner air shutters are out of adjustment. 2. Insuf ficient mak[...]

42 a . Lint screen and lint compartment are not being cleaned on a regular basis. b. Lint accumulation in location exhaust system. 3. Insufficient make-up air . 4. Failed hi-limit thermostat. 5. Failed lint compartment automatic (225° F [107° C]) safety thermostat circuit. 6. Extractors (washers) are not performing properly . 7. Low or inconsiste[...]

43 SECTION VIII DA T A LABEL INFORMA TION A . D A T A LABEL Contact Maytag Co. When contacting the Maytag dealer , certain information is required to insure proper service/parts information. This information is on the data label located on the upper left side panel area behind the top control (access) door . When contacting the Maytag Co. , please [...]

44 THE DA T A LABEL 1. MODEL NUMBER The model number is an Maytag Company number , which describes the size of the dryer and the type of heat (gas, electric, or steam). 2. SERIAL NUMBER The serial number allows Maytag to gather information on your particular dryer . 3. MANUF ACTURING CODE NUMBER The manufacturing code number is a number issued by M[...]

45 SECTION IX PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor Controller (Computer) Board a . Upon completing installation of the replacement microprocessor controller (computer) board, reestablish power to the dryer . b. Start the drying cycle. c . V erify that the motors and the heat indicator dots in the microprocessor[...]

46 e . Open main door . The dryer must stop and ALL output indicator lights on the back side of the microprocessor controller (computer) board must go out. (Refer to the illustration on previous page). f. T ry to restart the dryer with the main door open. g . The microprocessor controller (computer) board s light emitting diode (L.E.D.) display [...]

47 3. For Direct Spark Ignition (DSI) System Models Manufactured W ith ADC M odule Part No. 880815 a. Upon completing installation of the replacement DSI module, reestablish power to the dryer . b. Starting the drying cycle. c . The ignition DSI module s light emitting diode (L.E.D.) indicator will light red for up to approximately 1.5-sec[...]

48 SECTION X BURNER MANUAL RESET HI-LIMIT INSTRUCTIONS IMPOR T ANT FOR MECHANICAL METER, TIMER OR PHASE 5 WITHOUT HEA T F AUL T (GAS MODELS ONL Y ) This dryer was manufactured with a burner manual reset hi-limit thermostat. If this burner manual reset hi-limit thermostat is open prior to the start of the drying cycle, or during the cycle, the dryer[...]

Part No. 113064 1- 01/12/99-150 2- 03/26/99-150 3- 12/15/99-150 4- 01/19/00-150 5- 03/03/00-150 6* 10/30/00-150 7* 04/25/01-500 8* 02/04/02-250 9 - 01/31/03-100 10 * 06/23/03-100 11 * 09/03/03-50[...]