American Dryer ML-200 manual Failed microprocessor controller computer

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*Microprocessor controller (computer) "MTR" relay output indicator is off.

1. Failed microprocessor controller (computer).

F.Blower (fan/impellor) motor operates okay for a few minutes, then either repeatedly or occasionally trips the overload protector...

NOTE: When the overload protector trips, the microprocessor controller (computer) L.E.D. (light emitting diode) display will read "door."

1.Motor is overheating ...

a.Motor air vents clogged with lint.

b.Low voltage to the motor.

c.Failed motor.

d.Failed impellor/fan drive bearings.

e.V-belts are too tight.

2.Failed overload protector.

G.Both drive motor and blower (impellor/fan) motor are not operating... microprocessor controller (computer) L.E.D. (light emitting diode) motor indicator dots and the "MTR" relay output and forward "FWD" or reverse "REV" L.E.D. indicators are on.

1.Blown drive motor and blower (fan/impellor) motor fuse(s) / overload(s).

2.Failed motors (both blower [fan/impellor] and drive).

H.Both drive motor and blower (fan/impellor) motor not operating... microprocessor controller (computer) L.E.D. (light emitting diode) motor indicator dots and the "door" L.E.D. indicator are on but relay output L.E.D. indicators are off (microprocessor controller [computer] L.E.D. display does not read "door")...

1.Failed microprocessor controller (computer).

I. Both drive motor and blower (impellor/fan) motor run for a few minutes then stop...

microprocessor controller (computer) L.E.D. (light emitting diode) display continues to read time

or percent of extraction and ALL indicator dots are off...

1.Fault in main door switch circuit ...

a.One (1) of the main door switches are out of adjustment.

b.Loose connection somewhere in the door switch circuit.

2.Fault in the lint drawer switch circuit.

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Contents ML-200 Non-Tilting Retain This Manual In a Safe Place For Future Reference Foryour Safety Page Table of Contents Section Procedure for Functional Check of Replacement Section Important InformationSafety Precautions What to do if YOU Smell GASPage Specifications GAS and Steam Models Component IdentificationML-200 Dimensions and Component Location Page Installation Procedures Reassembly of DryerPage Page Location Requirements Fresh AIR Supply Exhaust Requirements Page Compressed AIR Supply System Electrical Information Electrical RequirementsMLG-200 Gas Hp Blower/3 Hp Drive Motor MLS-200 Steam Hp Blower/3 Hp Drive Motor Page GAS Information Type of GAS Latest Edition Page Steam Information System Connections Section H, itemPage Compressed Air Supply Air Pressure Diagram Preparation for OPERATION/START-UP Preoperational Tests Basket Coating Shut Down Instructions SERVICE/PARTS Information ServiceParts Warranty Information Returning Warranty CardsWarranty Returning Warranty PartsPage Routine Maintenance CleaningSteam Dryers only Adjustments LubricationComponent System Descriptions Tumbler Basket Drive SystemTUMBLER/BASKET AIR Blower Drive SystemSafety Devices Load Door SwitchesSteam Damper Actuator System Troubleshooting No DisplayFailed reversing contactor relay Failed microprocessor controller computer Page Blown 24 VAC control circuit fuse fuse Page For GAS Models only Excessive noise and/or vibration Tumbler basket out of alignment Procedure for Functional Check Replacement Components Page Page Manual Reset HI-LIMIT Instructions P O R T a N TADC113142 1- 04/21/00-8