Maytag MLG31PCA Installation Manual
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Maytag MLG31PCA Installation Manual

Maytag MLG31PCA Installation Manual

30 lb. stacked model
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WARNING: 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.
— WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Clear the room, building or area of all
occupants.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.
— Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
020502JEV/mcronan
MLG31PCA
30 lb. Stacked Model
Installation Manual
RETAIN THESE INSTRUCTIONS IN A SAFE
PLACE FOR FUTURE REFERENCE
AVERTISSEMENT: Assurez-vous de bien
suivre les instructions données dans cette notice
pour réduire au minimum le risque d'incendie
ou d'explosion ou pour éviter tout dommage
matériel, toute blessure ou la mort.
— Ne pas entreposer ni utiliser d'essence ni
d'autres vapeurs ou liquides inflammables à
proximité de cet appareil ou de tout autre
appareil.
— QUE FAIRE SI VOUS SENTEZ UNE ODEUR
DE GAZ:
• Ne pas tenter d'allumer d'appareils.
• Ne touchez à aucun interrupteur. Ne pas
vous servir des téléphones se trouvant dans
le bâtiment.
• Évacuez la pièce, le bâtiment ou la zone.
• Appelez immédiatement votre fournisseur
de gaz depuis un voisin. Suivez les
instructions du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur
de gaz, appelez le service des incendies.
— L'installation et l'entretien doivent être assurés par
un installateur ou un service d'entretien qualifié
ou par le fournisseur de gaz.
Part No. 113364

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  • Page 1 — Installation and service must be performed by a qualified installer, service agency or the gas supplier. RETAIN THESE INSTRUCTIONS IN A SAFE 020502JEV/mcronan MLG31PCA 30 lb. Stacked Model AVERTISSEMENT: Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au minimum le risque d’incendie ou d’explosion ou pour éviter tout dommage...
  • Page 2 Retain This Manual In A Safe Place For Future Reference This product embodies 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 qualified technicians should service this equipment. OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation manual included with the dryer.

  • Page 3: For Your Safety

    YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) STANDARDS.
  • Page 4 The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY or FIRE COULD RESULT. DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER (SCREEN) IN PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED. PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation manual included with the dryer.

  • Page 5: Table Of Contents

    SECTION I IMPORTANT INFORMATION ... 3 A. Receiving and Handling ... 3 B. Safety Precautions ... 4 SECTION II SPECIFICATIONS ... 6 SECTION III INSTALLATION PROCEDURES ... 8 A. Unpacking/Setting Up ... 8 B. Location of the Dryer ... 8 C.
  • Page 6 SECTION VII ROUTINE MAINTENANCE ... 35 A. Cleaning ... 35 B. Adjustments ... 36 C. Lubrication ... 36 SECTION VIII TROUBLESHOOTING ... 37 SECTION IX PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ... 44 Optional Exhaust Duct Kit ... 46 Optional Gas Piping Kit ...

  • Page 7: Important Information

    IMPORTANT INFORMATION 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/or packaging, and wooden skid should be visually inspected for shipping damage.

  • Page 8: Safety Precautions

    B. SAFETY PRECAUTIONS WARNING: 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. WARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed.
  • Page 9 7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust ductwork, and inside the dryer. The frequency of inspection and cleaning can best be determined from experience at each location. WARNING: The collection of lint in the burner area and exhaust ductwork can create a potential fire hazard.

  • Page 10: Specifications

    Shaded areas are in metric equivalents NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or obligation. SECTION II SPECIFICATIONS 44” 111.76 cm 42-3/4” 108.58 cm 5-5/8” 14.29 cm 16-11/16” 42.38 cm 1-3/16” 3.02 cm 71-1/2”...
  • Page 11 MAXIMUM CAPACITY (TOTAL DRY WEIGHT) BASKET (TUMBLER) DIAMETER BASKET (TUMBLER) DEPTH BASKET (TUMBLER) VOLUME (PER BASKET) BASKET (TUMBLER) MOTOR (2 PLACES) DOOR OPENING - DIAMETER (2 PLACES) VOLTAGE AVAILABLE APPROX. WEIGHT (UNCRATED) APPROX. WEIGHT (CRATED) HEAT INPUT (TOTAL FOR BOTH BASKETS) AIRFLOW (PER BASKET/TUMBLER) GAS INLET SIZE (2 PLACES) Shaded areas are stated in metric equivalents...

  • Page 12: Installation Procedures

    INSTALLATION 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- LATEST EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70-LATEST EDITION (National Electrical Code) or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General Installation and Gas Plumbing) or Canadian Electrical Codes Parts 1 &...
  • Page 13 1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be removed from the floor area that the dryer is to rest on. IMPORTANT: “The dryer must be installed on noncombustible floors only.” 2.

  • Page 14: Dryer Enclosure Requirements

    Even though a 12-inch (30.48 cm) clearance is acceptable, it is recommended that the rear of the dryer be positioned approximately 2 feet (0.61 meters) away from the nearest obstruction, i.e., wall, for ease of installation, maintenance, and service. 9. The dryer must be installed with a proper exhaust duct connection to the outside. 10.

  • Page 15: Fresh Air Supply Requirements

    D. FRESH AIR SUPPLY REQUIREMENTS Air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An unrestricted source of 800 cfm (22.65 cmm) is necessary for each dryer. An unrestricted air entrance from the outdoors (atmosphere) of a minimum of 1-1/2 square feet (0.14 square meters) is required for each dryer.

  • Page 16: Exhaust Requirements

    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, overheating of the dryer, and shut down of the burner by the airflow (sail) switches, burner hi-limits, or basket (tumbler) hi-heat thermostats. The dryer must be installed with a proper exhaust duct connection to the outside.
  • Page 17 NOTE: Exhaust back pressure measured by a manometer at the dryer exhaust duct area must be no less than 0 and must not exceed 0.3 inches (0.74 mb) water column (W.C.). It is suggested that the ductwork from each dryer not exceed the limitations noted in this manual. If the ductwork exceeds these limitations or has numerous elbows, the cross-sectional area of the ductwork must be increased in proportion to length or number of elbows in it.
  • Page 20 3. Multiple Dryer (Common) Venting If it is not feasible to provide separate exhaust ducts for each dryer, ducts from individual dryers may be channeled into a “common main duct.” The individual ducts should enter the bottom or side of the main duct at an angle not more than 45º...
  • Page 21 To protect the outside end of the horizontal ductwork from the weather, a 90º elbow bent downward should be installed where the exhaust exits the building. If the exhaust ductwork travels vertically up through the roof, it should be protected from the weather by using a 180º turn to point the opening downward. In either case, allow at least twice the diameter of the duct between the duct opening and nearest obstruction.

  • Page 23: Electrical Information

    F. ELECTRICAL INFORMATION 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 with local and state regulations or codes. In the absence of such codes, ALL electrical connections, materials, and workmanship must conform to the applicable requirements of the National Electrical Code ANSI/NFPA NO.
  • Page 24 3. Grounding Grounding (earth) connections 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/NFPA NO. 70-LATEST EDITION, or in Canada, the installation must conform to applicable Canada Standards: Canadian Electrical Codes Parts 1 &...

  • Page 25: Gas Information

    G. GAS INFORMATION 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 with local and state regulations or codes. In the absence of such codes, ALL plumbing connections, materials, and workmanship must conform to the applicable requirements of the National Fuel Code ANSI Z223.1-LATEST EDITION or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN.CGA-B149.2-M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General Installation...

  • Page 26: Type Of Gas

    2. Technical Gas Data a. Gas Specifications Manifold Pressure* 3.5 inches W.C. In-Line Pressure 6.0 - 12.0 inches W.C. Shaded areas are stated in metric equivalents Measured at gas valve pressure tap when gas valve is on. W.C. = Water column in inches. Gas Inlet Size (each basket/tumbler) Btu/hr Input (each basket/tumbler) Btu/hr Input (total for both baskets/tumblers)
  • Page 27 3. Piping/Connections ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LATEST EDITION, or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General Installation and Gas Plumbing), as well as local codes and ordinances and must be done by a qualified professional.
  • Page 28 The size of the main gas supply line (header) will vary depending on the distance this line travels from the gas meter (or in the case of liquid propane [L.P.] gas, the supply tank), the number of tees, other gas-operated appliances on the supply line, etc. Specific information regarding supply line size should be determined by the gas supplier.

  • Page 30: Preparation For Operation

    H. PREPARATION FOR OPERATION The following items should be checked before attempting to operate the dryer: 1. Read ALL “CAUTION,” “WARNING,” 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 that is located in the gas train area (right inside wall near sail switch) behind the middle control (access) door.
  • Page 31 3) Start the dryer by pressing the desired setting for either the upper basket (tumbler) or lower basket (tumbler) (i.e., “LO” selection for the upper basket/tumbler). The light emitting diode (L.E.D.) display will now read selection (setting) made and the amount of time vended (i.e., “LO 10”). NOTE: The dryer can be stopped at any time by opening the main door.
  • Page 32 NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open. Once ignition is established, a gas pressure test should be taken at the gas valve pressure tap of each dryer to assure that the water column (W.C.) pressure is correct and consistent. NOTE: Water column pressure requirements (measured at the gas valve pressure tap): Natural Gas ...

  • Page 33: Shut Down Instructions

    J. SHUT DOWN INSTRUCTIONS In the case where the dryer is to be shut down (taken out of service) for a period of time, the following must be performed: 1. Discontinue power to the dryer (both baskets [tumblers]) either at the external disconnect switch or the circuit breaker.

  • Page 34: Operating Instructions

    OPERATING INSTRUCTIONS A. STARTING THE DRYER 1. Coin Dryers The dryer is available for use when the light emitting diode (L.E.D.) display reads “FILL” and/or the amount needed to start the dryer (i.e., “25”). Once the load has been put into the dryer and the main door is closed, start the dryer as follows: a.
  • Page 35 2) Selection (setting) changes can be made at any time during the drying cycle by opening and closing the main door and then making a new selection. 3) Additional time can be purchased at any time. If the dryer is in operation (drying mode) and additional coins are inserted, the light emitting diode (L.E.D.) display(s) will read “PUSH”...
  • Page 36 d. Notes 1) The dryer basket (tumbler) can be stopped at any time by opening the main door. To restart dryer, shut the main door and press desired setting. NOTE: If the Anti-Wrinkle program is not active or in use, the light emitting diode (L.E.D.) display will read “donE”...

  • Page 37: Service/Parts Information

    SERVICE/PARTS INFORMATION A. SERVICE Only properly licensed or trained technicians should service the dryer. If service is required, contact the dealer from whom the equipment was purchased. If the dealer cannot be contacted or is unknown, contact the Maytag Co. for a dealer in your area. NOTE: When contacting the Maytag Co., be sure to give them the correct model number and serial number so that your inquiry is handled in an expeditious manner.

  • Page 38: Warranty Information

    WARRANTY INFORMATION A. RETURNING WARRANTY CARDS 1. Before any dryer leaves the manufacturer, 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 so as to extend the customer’s warranty period.

  • Page 39: Routine Maintenance

    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 upon proper air circulation.

  • Page 40: Adjustments

    WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCTWORK CAN CREATE A POTENTIAL FIRE HAZARD. WARNING: DO NOT OBSTRUCT THE FLOW OF COMBUSTION AIR AND VENTILATION AIR. WARNING: INSPECT AND REMOVE ANY LINT ACCUMULATION, WHICH CAN CAUSE THE BACK DRAFT DAMPER TO BIND OR STICK. NOTE: A back draft damper that is sticking partially closed can result in slow drying and shut down of the heat circuit safety switches and/or thermostats.

  • Page 41: Section Viii

    IMPORTANT: YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLY AND THE GAS SUPPLY BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, OR TESTING OF ANY EQUIPMENT PER OSHA (Occupational Safety and Health Administration) STANDARDS.
  • Page 42 2. Dual Microprocessor Controller (DMC) computer indicator is off (and the light emitting diode [L.E.D.] display does not read “door”) ... a. Failed DMC computer. C. Basket (tumbler) does not turn, but motor and DMC computer motor L.E.D. dot and motor output L.E.D.
  • Page 43 e. Failed 24 VAC step down transformer. 2. Dual Microprocessor Controller (DMC) “door” input light emitting diode (L.E.D.) is on ... a. Failed DMC computer. H. The dryer does not start (COIN MODELS ONLY) ... coin(s) inserted and the L.E.D. display continues to read “FILL”...
  • Page 44 Possible reasons for overheating ... 1. Restriction in location exhaust ductwork ... a. Dryer exhaust damper stuck in closed position. b. Undersized exhaust ductwork. 2. Insufficient make-up air. K. Dual Microprocessor Controller (DMC) computer light emitting diode (L.E.D.) display reads “SEFL”...
  • Page 45 2. Failed keyboard (touch pad) label assembly. 3. Improper grounding of the dryer or the Dual Microprocessor Controller (DMC) computer ground connections to the panel or the dryer are not proper. 4. Failed DMC computer. N. Dryer stops during a cycle and the DMC computer light emitting diode (L.E.D.) display returns to “FILL”...
  • Page 46 Q. No heat (GAS MODELS ONLY) ... ignitor sparks but there is no flame at burner ... 1. Direct Spark Ignition (DSI) ignitor probe out of adjustment ... a. Reposition ignitor assembly closer to the burner ribbon area. Also check to make sure ribbon is flush ALL around the top of the burner tube (ribbon should not stick up at any area).
  • Page 47 8. Failed DMC computer temperature sensor ... temperature calibration is inaccurate. 9. Failed DMC computer ... temperature calibration is inaccurate. 10. Failed burner/oven hi-limit. 11. Failed basket (tumbler) hi-limit thermostat. 12. Lint accumulation in location exhaust system. Condensation on main door glass... 1.

  • Page 48: Procedure For Functional Check Of Replacement Components

    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. Verify that the motor(s)-(1) and the heat indicator dots-(2) in the microprocessor controller (computer) light emitting diode (L.E.D.) display are on.
  • Page 49 e. Open main door. The dryer must stop and ALL indicator lights on the back side of the microprocessor (computer) board must go out. f. Try to restart the dryer with the main door open. g. The microprocessor controller (computer) board’s light emitting diode (L.E.D.) display must read “DOOR.” h.

  • Page 50: Optional Exhaust Duct Kit

    Optional Exhaust Duct Kit Part No. 882035 ITEM # 143600 143519 143509 143536 150300 12’ 117505 LLUSTRATED Optional Gas Piping Kit Part No. 880128 DESCRIPTION 10” X 6” X 6”, Y DUCT FLEX DUCT 6” x 4’ LONG FLEX DUCT 6” x 8’ LONG 45º...
  • Page 51 Part No. 113364 1 - 02/11/02-20 2 * 05/01/02-250...

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