American Dryer Corp MD-170 manual Failed motor Failed blower impellor/fan drive shaft bearings

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c.Failed motor.

d.Failed blower (impellor/fan) drive shaft bearings.

NOTE: V-belts to tight or bearings not lubricated often enough.

G.Both drive motor and blower (impellor /fan) motor is not operating (do not start) and indicator light is on...

1.Fault in L1 or L2 termination(s) between terminal block and contactors (relays).

2.Failed contactors (both blower and drive).

3.Failed motors (both blower and drive) .

H.Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model, DSI module, or Steam Model damper system pneumatic solenoid)...

GAS MODELS

1.Fault in sail switch circuit...

a.Sail switch is out of adjustment or has failed.

b.Sail switch damper is not closing or is fluttering...

1)Lint drawer screen is dirty.

2)Restriction in exhaust.

3)No exhaust air flow...

a)Failed impellor (fan/blower) "squirrel cage."

b)Loose or failed impellor (fan) assembly drive V-belts.

c)Fault in impellor (fan/blower) motor circuit...refer to Item E and Item F on page 44 in this section.

2.Tripped burner manual reset hi-limit switch.

3.Tripped lint chamber sensor bracket tumbler (basket) manual reset hi-limit switch or circuit.

4.Failed temperature selection switch or circuit.

5.Failed temperature cycle thermostat (try another selection).

6.Failed heat timer.

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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 SERVICE/PARTS InformationParts Warranty Information Returning Warranty CardsCleaning Routine MaintenanceClean 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