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©2004 Maytag Appliances Company 16022904 Rev. 0 3
Important Information ...................................................... 2
Important Safety Information ........................................... 4
General Information
Model Identification ..................................................... 7
Commercial Dryer Nomenclature ............................... 7
Terminology/Definitions ............................................... 8
How It Works .................................................................. 9
Gas Valve Assembly ................................................... 9
Test Equipment ............................................................ 12
Troubleshooting Procedures ......................................... 13
General Specifications ............................................... 13
Wattage Specifications ............................................. 13
Exhaust Ducts .......................................................... 13
Electrical Troubleshooting ......................................... 14
Drive Motor Check .................................................. 14
Motor Test Cord ..................................................... 15
Drive Motor Test ..................................................... 15
Centrifugal Switch ..................................................... 15
Air Shutter Adjustment .............................................. 15
Manometer ................................................................ 16
Mechanical Troubleshooting ...................................... 17
Single Dryer Troubleshooting Guide .......................... 18
Single Dryer Diagnostic Program ........................... 26
Single Dryer Diagnostic Code ................................ 27
Stack Dryer Troubleshooting Guide ........................... 29
Stack Dryer Diagnostic Program ............................ 34
Stack Dryer Diagnostic Code ................................. 35
Disassembly Procedures
Control Panel ............................................................ 37
Microprocessor Board ............................................... 37
Touch Pad Assembly ................................................ 37
Transformer ............................................................... 37
Meter Case ............................................................... 37
Service Door Switch .................................................. 38
Coin Vault Switch ...................................................... 38
Coin Drop Acceptor ................................................... 38
Coin Sensor .............................................................. 38
Door Assembly .......................................................... 38
Reversing Door Assembly ...................................... 39
Door Disassembly.................................................. 39
Front Panel ............................................................... 39
Top Cover .................................................................. 40
Door Switch............................................................... 40
Front Shroud Assembly Removal .............................. 41
Outlet Duct, Shroud & Tumbler Front .................... 41
Lint Filter ................................................................ 42
Bearing & Pads ...................................................... 42
Front Seal .............................................................. 42
Belt ............................................................................ 42
Baffles ....................................................................... 43
Rear Shroud Assembly ............................................. 43
Back Seal .............................................................. 44
Roller & Bearing Assembly .................................... 44
Table of Contents
Thermostats .............................................................. 45
Cycling Thermostat ................................................ 45
Low-Cycling Thermostat ......................................... 45
Thermal Fuse ......................................................... 45
Hi-Limit Thermostat ................................................ 45
Blower Assembly ...................................................... 45
Blower Seal ............................................................ 45
Blower Cover .......................................................... 45
Blower .................................................................... 46
Exhaust Duct Pipe ................................................. 47
Drive Motor Assembly ............................................... 47
Assembly Breakdown ............................................... 47
Motor Switch .......................................................... 47
Idler Arm Assembly ................................................ 47
Gas Valve Assembly ................................................. 48
Coil ......................................................................... 48
Igniter ..................................................................... 48
Gas Valve ............................................................... 49
Combustion Cone .................................................. 49
Inlet Duct ................................................................... 49
Heater Enclosure ...................................................... 49
Stack Dryer-Sloped Front .......................................... 50
Service Panel & Switch ............................................. 50
Access Cover ......................................................... 50
Control Panel ......................................................... 50
Microprocessor ...................................................... 51
Coin Drop ............................................................... 51
Front Panel ............................................................ 52
Stack Dryer--Sloped Front (PR Model) ...................... 53
Microprocessor ...................................................... 53
Stack Dryer - MN Models .......................................... 53
Front Panel ............................................................ 53
Timer ...................................................................... 54
Selector Switch ...................................................... 54
Push-To-Start Switch ............................................. 54
Machine-In-Use Light ............................................. 54
Stack Dryer - Flat Front Models ................................ 55
Front Panel ............................................................ 55
Microprocessor ...................................................... 55
Front Shroud Assembly ......................................... 55
Motor & Heater Relays .......................................... 56
Appendix A ............................................................... 57
Programming ............................................................. 58
Start Operating Set-up ........................................... 58
General User Information ....................................... 58
Set-Up codes ......................................................... 60
Dryer Diagnostic Mode .......................................... 66
Dryer Help Mode .................................................... 66