American Dryer Corp MD-170 manual Gas Models

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STEAM MODELS

1.No (external) compressed air (80 PSI [552 kPa) required) to steam damper solenoid.

2.Flow control valve is not adjusted correctly ...

a.Too much restriction.

3.Failed steam damper pneumatic (air) solenoid.

4.Damper stuck in "closed" position ...

a.Check for obstruction.

5.Leak in the pneumatic (air) system.

6.Failed air piston.

J. Dryer operates but is taking too long to dry...

1.Exhaust duct work run too long or is undersized...back pressure cannot exceed 0.3 inches water column (W.C.) - 0.74 millibars.

2.Restriction in exhaust ...

a.Customer-furnished exhaust back draft damper is sticking partially closed.

b.Restriction in duct work ...

1)Check duct work from dryer all the way to the outdoors.

3.Insufficient make-up air.

4.Impellor (blower/fan) "squirrel cage" is rotating in the wrong direction.

5.Lint drawer screen is dirty or is not being cleaned often enough.

6.Inadequate air flow...

a.Impellor (blower/fan) "squirrel cage" failure.

b.Loose impellor (blower/fan) "squirrel cage" drive V-belts.

7.Gas Models

a.Low and/or inconsistent gas pressure;

Natural Gas pressure must be 3.5 inches of water column (8.7 millibars).

Liquid Propane (L.P.) pressure must be 10.5 inches of water column (26.1 millibars).

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Contents MD-170 Installation/Operators Manual Maytag CoRetain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Section Important InformationSafety Precautions What to do if YOU Smell GASGAS Supply or the Steam Supply Before ANY Covers or Specifications / Component Identification Specifications GAS and SteamSpecifications MDG-170 Gas MDS-170 Steam Component Identification Page Installation Procedures Location RequirementsUNPACKING/SETTING UP Round duct can now be connected to the dryer Dryer Enclosure Requirements Fresh AIR Supply Exhaust Requirements Create a Potential Fire HazardPage Page Page Page Page Electrical Information MDG-170 Gas MDS-170 Steam Page Page GAS Information Type of GAS Latest Edition Page Steam Information Steam Requirements High PressureSteam Damper System Diagram 621 kPaPage Switch Otherwise the Dryer will not Start Preparation for OPERATION/START-UPPreoperational Tests Natural Gas Inches W.C .5 millibars Shut Down Instructions Basket CoatingCompressed AIR Requirements 621 kPaSERVICE/PARTS Information ServiceParts Warranty Information Returning Warranty CardsRoutine Maintenance CleaningClean the lint drawer or screen every third or fourth load Createa Potentialfire Hazard Adjustments LubricationTroubleshooting Drive motor is not operating does not startBlower impellor/fan motor is not operating does not start Failed blower impellor/fan drive shaft bearingsFailed 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 Dryer or scraping noise at tumbler basket area AA. Excessive noise and/or vibrationFailed 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 Reversing Timer SPIN/DWELLADJUSTMENTS Timing LegendData Label Location / Information Data Label GAS Manifold Pressure for GAS DryersProcedure for Functional Check Replacement Components Microprocessor computer BoardModels 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