Related Manuals for Maytag MDG-52
Summary of Contents for Maytag MDG-52
- Page 1 MDG-52 / MDG-78 Service Manual Whirlpool Corporation Commercial Laundry Benton Harbor, MI 49022 1-800-662-3587 Part No. 450362 - 1...
- Page 2 “IMPORTANT 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. Maytag Co. 450362 - 1...
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Page 3: Table Of Contents
List of Acronyms _______________________ lint collection system is used. L.P. Liquid Propane The wiring diagram for the dryer is located in OSHA Occupational Safety and Health Administration the front electrical control box area. T.E.F.C. Totally Enclosed, Fan-Cooled 450362 - 1 Maytag Co. -
Page 4: Important Information
8. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or the National Electrical Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada, the Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION. Maytag Co. 450362 - 1... - Page 5 SUPPLY OR THE STEAM 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 STANDARDS. DO NOT MODIFY THIS APPLIANCE. 450362 - 1 Maytag Co.
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Page 6: Routine Maintenance
Maximum operating efficiency is dependent upon proper air circulation. The accumulation of lint can restrict this airflow. If the guidelines in this section are met, a Maytag dryer will provide many years of efficient, trouble free, and most importantly, safe operation. -
Page 7: Adjustments
Motor and drive belts should be examined. Cracked or seriously frayed belts should be replaced. Complete operational check of controls and valves. Complete operational check of all safety devices (door switches, lint drawer switch, sail switch, burner and hi-limit thermostats). 450362 - 1 Maytag Co. -
Page 8: Installation Requirements
National Electrical Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada, the Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION. IMPORTANT: Failure to comply with these codes or ordinances and/or the requirements stipulated in this manual can result in personal injury or component failure. Maytag Co. 450362 - 1... -
Page 9: Operational Service Check Procedure
6. If computer program changes are required, refer to the Phase 8 Operator’s Manual (P/N 113255) for details. 7. The dryer should be operated through one complete cycle to assure that no further adjustments are necessary and that all components are functioning properly. 450362 - 1 Maytag Co. -
Page 10: Description Of Parts
Gas heated dryers are equipped with a gas burner assembly consisting of two burner tubes, two gas valves, Glo-Bar infrared sensor. The inlet piping enters through the rear of the dryer on the right-hand side (viewing from the front) and runs to the front of the dryer where the gas valve is located. Maytag Co. 450362 - 1... -
Page 11: Drive Motor
F. TUMBLER The tumbler consists of four ribs along with a front and back, which are forced together as an assembly. 450362 - 1 Maytag Co. -
Page 12: Main Door Switch
Simply grab the lint drawer handle, slide out the drawer, brush off the lint, and slide the drawer back in. The lint screen must be kept clean in order for the dryer to operate properly and efficiently. Maytag Co. 450362 - 1... -
Page 13: Lint Drawer Switch
The lint drawer switch insures that the dryer will operate only when the lint drawer is completely closed. This is a safety device and should never be disabled. M. REVERSING REAR CONTROL PANEL ASSEMBLY This panel contains your blower contactor, and your reverse contactor. 450362 - 1 Maytag Co. -
Page 14: Servicing
Phillips Pan screws, pull back on computer board to remove. 6. Install new computer by reversing this procedure. 7. When replacing the computer, the computer must be programmed. (Please refer to the Computer Operator’s Manual for details.) 8. Reestablish electrical power to the dryer. Maytag Co. 450362 - 1... - Page 15 6. Install new sensor probe assembly (P/N 836028) by reversing procedure. 7. Reestablish electrical power to the dryer. NOTE: If, when power is reestablished, the computer display reads exhaust probe fault check for a loose connection in the wiring. 450362 - 1 Maytag Co.
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Page 16: Glo-Bar Controls
7. Remove valve mounting bracket, manifold, and piping from gas valve. 8. Reverse procedure for installing new gas valve. WARNING: Test all connections for leaks by brushing on a soapy water solution. NEVER TEST FOR LEAKS WITH A FLAME. Maytag Co. 450362 - 1... - Page 17 NOTE: If correct water column pressure cannot be achieved, problem may be due to an undersized gas supply line, a faulty or underrated gas meter, etc. 450362 - 1 Maytag Co.
- Page 18 4. Remove burner tubes by sliding them out. 5. Replace by reversing procedure. WARNING: Test all connections for leaks by brushing on a soapy water solution. NEVER TEST FOR LEAKS WITH A FLAME. Do not modify this appliance. Maytag Co. 450362 - 1...
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Page 19: Thermostats
Providing all the other heat-related circuits are functioning properly, ignition should now be established. If an improper airflow occurs, the sail switch damper will release, and the circuit will open. 450362 - 1 Maytag Co. -
Page 20: Front Panel And Main Door Assemblies
24 to 36 hours. 8. Pop rivet the inner door to the outer door and reattach the door handle. 9. After 24-hour curing period, install main door on dryer by reversing Step #1-2. Maytag Co. 450362 - 1... - Page 21 With the main door open and the dryer operating, the sail switch should be open, and the burner should not come on. CAUTION: Do not abort this switch by taping or screwing sail switch damper to burner. PERSONAL INJURY OR FIRE COULD RESULT. 450362 - 1 Maytag Co.
- Page 22 6. Remove the three 1/4-20 x 1/2” Allen button head screw in center of basket. 7. Remove tumbler assembly from front of dryer. 8. Reassemble components onto dryer by reversing steps 2 through 7. 9. Reestablish electrical power to the dryer. Maytag Co. 450362 - 1...
- Page 23 2. Remove drive belt. 3. Disconnect wiring harness from motor. 4. Remove bolts holding motor to mount and replace with new motor. 5. Replace belt back around motor pulley. 6. Reestablish electrical power to the dryer. 450362 - 1 Maytag Co.
- Page 24 8. Reinstall the motor mount and reconnect the motor harness. 9. Reestablish electrical power to the dryer. To Replace Impellor To replace the impellor, follow steps 1 through 4 of “To Replace Impellor Motor (Direct Drive). Maytag Co. 450362 - 1...
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Page 25: To Replace Lint Drawer Switch
All CODES starting with an “E” represent an event. An event failure is one that would still allow the dryer to run in a safe condition. The number after the “E” code indicates the amount of times that event failure occurred. The 13 Event Code failures are listed in the following table. 450362 - 1 Maytag Co. - Page 26 Transition the service switch to enter the service mode on coin models. Enter the service mode by holding down the STOP and UP ARROW key on non-coin models. Service mode can also be accessed via Maytag data acquisition (DA) communications. Please note that only the “vending parameters, count settings, and clock settings” will be available with this method.
- Page 27 When a cycle is running, the control will display DIAGNOSTIC MODE at the top of the display. If a fault occurs during Diagnostic Mode, the control will enter into a fault cool down and the occurring fault will be displayed. The fault can be cleared by reentering the diagnostic cycle. 450362 - 1 Maytag Co.
- Page 28 OPEN - CLOSED LINT Lint Door OPEN - CLOSED WATER PRESSURE O Input ON - OFF SAIL SWITCH Sail Switch OPEN - CLOSED VAULT SWITCH Vault Switch OPEN - CLOSED WATER OUTPUT S.A.F.E. output ON - OFF Maytag Co. 450362 - 1...
- Page 29 Coin 2 Bad Coin Count Upper pocket forward rotation sensor fault count Upper pocket reverse rotation sensor fault count Lower pocket forward rotation sensor fault count Lower pocket reverse rotation sensor fault count S.A.F.E. DISABLED – Water not connected 450362 - 1 Maytag Co.
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Page 30: Faults
30-seconds, the control will fault and display “SAIL SWITCH OPEN FAULT, CHECK MAIN DOOR AND LINT ACCESS AND SELECT CYCLE TO RESTART”. ROTATION SENSOR FAULT (D14) A rotation sensor fault occurs when the control is in a cycle and does not detect any rotation sensor pulses in more than 10-seconds. Maytag Co. 450362 - 1... -
Page 31: Events
S.A.F.E. DISABLED – WATER NOT CONNECTED This event pertains only to machines with a fire detection system. If the control senses a lack of water pressure, this event will appear. 450362 - 1 Maytag Co. -
Page 32: Technical Information
A. DATA LABEL When contacting Maytag, certain information is required to ensure proper service/parts information. This information is on the data label, located on the top left hand corner of the dryer, viewed from the rear (refer to the illustration above). -
Page 33: Using A Manometer
5/16” Socket or Open End Wrench 1/2” Socket Wrench 7/16” Socket or Open End Wrench 5/16” Nut Driver 12” Pipe Wrench (2) 1/4-20 x 1/2” “T” Shaped or “L” Shaped Allen Wrench Wire Cutters Channel Locks Manometer (P/N 122804) 450362 - 1 Maytag Co. - Page 34 Part No. 450362 1 - 01/27/14...