American Dryer Corp MD-170 manual Troubleshooting, Drive motor is not operating does not start

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SECTION VII

TROUBLESHOOTING

IMPORTANT: YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY or THE STEAM SUPPLY BEFOREANY COVERS or

GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OFANY EQUIPMENT per OSHA (Occupational Safety and HealthAdministration)

STANDARDS.

The information provided will help isolate the most probable component(s) associated with the difficulty described. The experienced technician realizes, however, that a loose connection or broken/ shorted wire may be at fault where electrical components are concerned ... and not necessarily the suspected component itself.

Electrical parts should always be checked for failure before being returned to the factory.

The information provided should not be misconstrued as a handbook for use by an untrained person making repairs.

IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the fuse being replaced.

WARNING: ALL SERVICE and TROUBLESHOOTING SHOULD BE PERFORMED BYA QUALIFIED PROFESSIONAL or SERVICE AGENCY.

WARNING: WHILE MAKING REPAIRS, OBSERVE ALL SAFETY PRECAUTIONS DISPLAYED ON THE DRYER or SPECIFIED IN THIS MANUAL.

MICROPROCESSOR (COMPUTER) MODELS

A.No L.E.D. (light emitting diode) display (for microprocessor [computer] models Only)...

1.Service panel fuse blown or tripped breaker.

2.Blown control circuit L1 or L2 1/2-amp (Slo Blo) fuse.

3.Failed microprocessor controller (computer).

4.Failed control step down transformer (for models 380 volts or higher Only).

B.Drive motor is not operating (does not start)...

1.Failed drive motor contactor (relay).

2.Failed arc suppressor (A.S.) board.

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Contents Maytag Co MD-170 Installation/Operators ManualRetain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Important Information SectionWhat to do if YOU Smell GAS Safety PrecautionsGAS Supply or the Steam Supply Before ANY Covers or Specifications GAS and Steam Specifications / Component IdentificationSpecifications MDG-170 Gas MDS-170 Steam Component Identification Page Location Requirements Installation ProceduresUNPACKING/SETTING UP Round duct can now be connected to the dryer Dryer Enclosure Requirements Fresh AIR Supply Create a Potential Fire Hazard Exhaust RequirementsPage Page Page Page Page Electrical Information MDG-170 Gas MDS-170 Steam Page Page GAS Information Type of GAS Latest Edition Page Steam Requirements High Pressure Steam InformationSteam Damper System 621 kPa DiagramPage Preparation for OPERATION/START-UP Switch Otherwise the Dryer will not StartPreoperational Tests Natural Gas Inches W.C .5 millibars Basket Coating Shut Down Instructions621 kPa Compressed AIR RequirementsParts SERVICE/PARTS InformationService Returning Warranty Cards Warranty InformationClean the lint drawer or screen every third or fourth load Routine MaintenanceCleaning Createa Potentialfire Hazard Lubrication AdjustmentsDrive motor is not operating does not start TroubleshootingFailed blower impellor/fan drive shaft bearings Blower impellor/fan motor is not operating does not startFailed microprocessor controller computer Failed keyboard touchpad label assembly GAS Models Steam Models Dryer operates but is taking too long to dry Gas Models Condensation on main door glass AA. Excessive noise and/or vibration Dryer or scraping noise at tumbler basket areaFailed drive motor contactor relay Failed motor Failed blower impellor/fan drive shaft bearings Steam Models Gas Models Steam Models Condensation on main door glass Excessive noise and/or vibration Timing Legend Reversing Timer SPIN/DWELLADJUSTMENTSData Label Location / Information GAS Manifold Pressure for GAS Dryers Data LabelMicroprocessor computer Board Procedure for Functional Check Replacement ComponentsModels manufactured with ADC module Part No Theory Of Operation P O R T a N T ADC P/N114501 02/16/00-25 2- 02/25/00-250