Maytag MDE/MDG21PDD, MDE/MDG21PRA, MDE/MDG21PNA, MDE/MDG21PDA, MDE/MDG21PND manual Table of Contents

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Table of Contents

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

©2004 Maytag Appliances Company

16022904 Rev. 0

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Contents Commercial Single Stack Dryers Important Information Table of Contents Important Safety Information About Ground Wires General Information Related PublicationsProper Grounding and Polarization of 120 Volts Wall Outlets Explanation Grounding InstructionsCommercial Dryer Nomenclature ServiceParts and Accessories Model IdentificationTERMINOLOGY/DEFINITIONS Term Definitions Water 1 o FAir movement measured in cubic feet per minute HOW IT Works GAS Valve AssemblyRadiant Sensor Contact Closed Function of Gas Valve SystemIgnition Failures Safety FeaturesPower Interruptions Gas ConversionsGeneral Information General Specifications Wattage SpecificationsExhaust Ducts Drive Motor Check Electrical TroubleshootingDrive Motor Test Centrifugal SwitchAir Shutter Adjustment Motor Test CordManometers How to UseNoisy and/Or Vibration Mechanical Troubleshooting Will Not RunWill Not Shut-Off Will Not DrySingle Dryer Troubleshooting Guide Operator Dryer Stopped with Zero Minutes Remaining DisplayCannot Enter Or ExitDropped Into Machine Credited Are Eventually Lost Display Flashes User ModeControl Does Not Respond ToKey Inputs Dryer Drum Will Not Turn To Coin 1 or ResponsePoint Is Used Will Not Keep Time Of Day During Power InterruptionsWill not Respond to handheld No DecimalDryer Will Not HeatDryer Diagnostic Program Single Dryer Diagnostic ProgramDoor Sense Problem Single Dryer Diagnostic CodeVAC Lower Dryer Has Zero Minutes Remaining Display Stack Dryer Troubleshooting GuideDisplay Is Blank Abnormal Display Or Function Upper orKeypads ControlBoard Does NotInterruption Response To Coin Or CoinKeep Time Day DuringCannot Dryer Runs Without Program Selection Drum Will Not Turn Stack Dryer Diagnostic Program D1 or d17 Door Sense Problem Stack Dryer Diagnostic CodeVoltage Problem Transformer Touch Pad AssemblyControl Panel Microprocessor BoardCoin Sensor Service Door SwitchCoin Vault Switch Door AssemblyReversing Door Assembly Door DisassemblyFront Panel Top Cover Door SwitchOutlet Duct, Shroud & Tumbler Front Front Shroud Assembly RemovalBelt Lint FilterBearing & Pads Front SealRear Shroud Assembly Installing Drive BeltBaffles Back Seal Roller and Bearing AssemblyLow-cycling Thermostat Blower AssemblyThermostats Cycling ThermostatBlower Exhaust Duct Pipe Assembly Breakdown Motor Switch Drive Motor AssemblyIdler Arm Assembly Gas Valve Assembly CoilsIgniter Heater Enclosure Gas ValveCombustion Cone Inlet DuctService Panel and Switch Access CoverStack Dryer Sloped Front Models Coin Drop MicroprocessorSwing Out Away Remove ScrewsStack DRYER-MN Models Stack Dryer Sloped Front PRMachine-In-Use Light Push-To-Start SwitchTimer Selector SwitchStack DRYER-FLAT Front Models Front Shroud AssemblyMotor & Heater Relays Appendix a Pricing Programming ProceduresFixed Vend Pricing SET UP Codes Money Counter Option Steps 3. thru 9. codes are skipped if mode 2.00 is selected00 7.STARTING of Special Pricing Hour Value of Coin 2 Canadian Dollar Drop White & Colors keypad Example Stacked Models Only Dryer Diagnostic ModeDryer Help Mode All Single Load Models