Maytag MAT12PRB, MAT12PSB, MAT12PRA, MAT12PRD, MAT12PDS, MAT12PSA Component Testing, Motor Testing

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Troubleshooting Procedures

!WARNING

To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing requires power.

COMPONENT TESTING

Illustration

Component

Test Procedure

Results

 

Pressure Switch

Disconnect wire terminals from switch.

Resistance above 2 Ω indicates dirty

 

 

Measure resistance across the

switch contacts.

 

 

following terminals:

 

 

 

Empty (Filling) 20 to 15--------------------

Closed circuit

 

 

Full (Run) 20 to 15 -------------------------

Open circuit

 

 

 

 

 

Water Valve

Measure resistance across the

Approximately 850-950 Ω

 

 

terminals of each coil on the valve.

 

 

 

 

 

 

Motor

Type of Motor:

See “Motor” Testing section for

 

 

Single speed (Split phase)

correct wiring contact

 

 

 

 

 

Pump

Verify drain pump is not clogged or

1) Remove clog and verify proper

 

 

damaged

operation

 

 

 

2) Replace drain pump if damaged

 

 

 

 

 

Transmission

Type of transmission (orbital):

See “Transmission” Disassembly

 

 

618 r.p.m. Spin

Procedures section.

 

 

150 o.p.m. Agitate

380 to 420 watts

 

 

Check wattage with full tub of water

 

 

 

 

 

only (Use Wattage Meter)

 

 

Belts

Check belt for excessive wear or being

Replace if belt if damaged

 

 

burnt and cracking

 

 

 

 

 

MOTOR TESTING

A motor test cord may be used to electrically check operation of the various electrical components without removing them from the unit. Testing in this manner merely determines whether or not part will function independently of other electrical components. In order to make accurate test, proper connection of the motor test cord is important.

All four leads of the test cord are required to test the washer drive motor. The following drawing shows installation of the test cord on washer drive motor. Reversing the motor from agitation to spin is accomplished by reversing the test cord wires B and C.

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16022842 Rev. 0

©2003 Maytag Appliances Company

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Contents Service Recognize Safety Symbols, Words, and Labels Important InformationTable of Contents Important Safety Information Related Publications Electrical Service InformationAbout Ground Wires Proper Grounding and Polarization of 120 Volts Wall OutletsGrounding Instructions ExplanationGeneral Information ServiceParts and Accessories Model IdentificationFill Water Level Control Pressure SwitchHOW IT Works Water Valve Non-ThermostaticHelical Drive Drive MotorTransmission Spin cycle completedTools for Servicing Part Number DescriptionTroubleshooting Procedures Mechanical TroubleshootingDamper Pad Noise Drive Lug AdjustmentPump Belt Adjustment Electrical Troubleshooting Component Testing Motor TestingWindings Wiring Harness Connections Readings Agitation SpinControl Panel MN Manual Model TimerCS Coin Slide Model Timer Control Board MicroprocessorTransformer Cycle Selector SwitchTouch pad Motor Run RelayLid Switch Assembly Prior series Lid Switch Assembly After seriesIndicator Light Timer models Reversing Motor RelayReinstalling Lid Switch Pressure SwitchUnbalance Lever and Plunger Assembly Air DomeCoin Drop Acceptor Water ValveCoin Slide Meter CaseReinstalling the Lid Service Door SwitchCoin Vault Switch Coin SensorBalance Ring Tub CoverFront Panel Top CoverInner Tub Access PlugAgitator Tub CenteringOuter Tub Reinstalling Mounting StemMounting Stem Tub BearingReinstalling tub bearing TransmissionReinstalling Lip Seal Lip SealDamper Assembly Brake Package and Radial BearingDrive Pulley and Rotor Bearing BeltsPump Drive Motor and Motor Base