Instruction/ maintenance manual of the product MDG76PC Maytag
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MDG76PC (Phase 7.3 Coin Gas DSI) Installation 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.
“IMPOR T ANT NOTE T O PURCHASER” Information must be obtained from your local gas supplier on the instructions to be followed if the user smells gas.
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 T O 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 operated with any of the back guards, outer tops, or service panels r emoved. PERSONAL INJUR Y OR FIRE COULD RESUL T . IMPOR T ANT PLEASE OBSER VE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation manual included with the dryer .
SECTION I IMPOR T ANT INFORMA TION ............................................................................... 3 A. Receiving and Handling ............................................................................................................
SECTION V DA T A LABEL INFORMA TION ............................................................................. 3 3 A. Data Label .......................................................................................................................
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/or packaging, and wooden skid should be visually inspected for shipping 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.
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.
6 SECTION II SPECIFICA TIONS/COMPONENT IDENTIFICA TION A. SPECIFICA TIONS Gas Shaded areas are stated in metric equivalents * A minimum of 3/4” pipe must be supplied to the gas inlet for each dryer . NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or obligation.
7 Specifications MDG76PC NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or obligation..
8 B. COMPONENT IDENTIFICA TION 1. Dryer Front V iew Illus. No. Description 1 Controls 2 Control (top access) Door Assembly 3 Main Door Assembly 4 Lint Compartment Area (lint screen located behind door.
9 2. Dryer Rear V iew Illus. No. Description 1 Heating Unit 2 * Electric Service Relay Box 3 Basket (tumbler) Bearing Mount Assembly 4 Idler Bearing Mount Assembly 5 Basket (tumbler) (drive) Motor Assembly (for reversing models ONL Y) 6 Blower Motor Assembly 7 Dryer Exhaust * Electric service connections for gas models are made in this box.
10 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.
11 10 . The dryer must be installed with provisions for adequate combustion and make-up air supply . CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6 months, inspect the exhaust ducting and remove any lint build up.
12 c . Remove the four (4) self-taping screws on the burner box that secure it to the top of the dryer shown in the illustration below . d. Remove the two (2) self-taping screws on the back electrical box and pull through ALL associated wires from the motor to this electrical box (refer to the illustration below ).
13 C. DR YER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of 12-inches (30.
14 D. FRESH AIR SUPPL Y REQUIREMENTS When the dryer is operating, it draws in room air , heats it, passes this air through the basket (tumbler), and exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors.
15 E. EXHAUST REQUIREMENTS 1. General Exhaust Ductwork Information Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork will create excessive back p.
16 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.
17 IMPOR T ANT : Exhaust back pressure measured by a manometer in the exhaust duct must be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column. IMPOR T ANT : Minimum duct size for a dryer that is vented vertically is 12-inches (30.
18 a . Outside Ductwork Protection 1) T o protect the outside end of the horizontal ductwork from the weather , a 90° elbow bent downward should be installed where the exhaust exits the building. If the ductwork travels vertically up through the roof, it should be protected from the weather by using a 180° turn to point the opening downward.
19 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.
20 2. Electrical Service Specifications IMPOR T ANT : The dryer must be connected to the electric supply shown on the data label that is affixed to the 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.
21 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, or in Canada, the Canadian Electrical Codes Parts 1 & 2 CSA C22.
22 If local codes permit, power to the dryer can be made by the use of a flexible U.L. listed power cord/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 .
23 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.
24 2. T echnical Gas Data a . Gas Specifications * Measured at gas valve pressure tap when the gas valve is on. b. Gas Connections Inlet connection ---- 3/4” N.
25 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.
26 Consistent gas pressure is essential at ALL gas connections. It is recommended that a 3/4-inch (19.050 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.
27 H. PREP ARA TION FOR OPERA TION/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 .
28 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.
29 NOTE: T o check for proper sail switch operation, open the main door and while holding main door switch plunger in, start dryer . Dryer should start but heat circuit should not be activated (on).
30 6. Check to insure that ALL setscrews (i.e., basket [tumbler] drive, idler , etc.) are tight. J. PREOPERA TIONAL INSTRUCTIONS 1. COIN MODELS a . Microprocessor Controller (computer) 1) When the microprocessor controller (computer) is in the ready state, the liquid crystal display (L.
31 SECTION IV 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.
32 90 DA YS 1. Remove lint from around basket (tumbler), drive motors, and surrounding areas. 2. Remove lint from gas valve burner area with a dusting brush or vacuum cleaner attachment. 3. Clean any lint accumulation in and around both the blower and drive motor casing openings.
33 SECTION V DA T A LABEL INFORMA TION A. DA T A LABEL Contact Maytag Co. When contacting the Maytag dealer , or the Maytag Co. , certain information is required to insure proper service/ parts information. This information is on the data label affixed to the left side panel area behind the top control (access) door .
34 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 .
35 SECTION VI PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor Controller (Computer) Board a . Phase 7 Coin Models 1) Upon completing installation of the replacement microprocessor controller (computer) board, reestablish power to the dryer .
36 2. For Models W ith Johnson Controls Direct Spark Ignition (DSI) Module (G760) Theory Of Operation: Start the drying cycle. When the gas burner ignites within the chosen trial for ignition time (6-seconds), the flame sensor detects gas burner flame and signals the DSI module to keep the gas valve open.
Part No. 113184 1- 04/23/03-25 2 - 05/14/03-25 3 * 05/27/03-CODE B.
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