Whirlpool Understanding the Centrifugal Switch and Dryer Motor Testing

CENTRIFUGAL SWITCH

To test the centrifugal switch, remove the pump and disconnect the motor harness block from the centrifugal switch.

Remove the switch from the motor, and remove the internal motor wires from the centrifugal switch.

Set the meter to the R X 1 scale and test the switch in the “start” position by pushing up on the switch actuator. Continuity should be present between the red and black terminals and between the orange and blue terminals. No continuity should be present between orange and violet.

Test the switch in the “run” position by releasing the actuator. Between the orange and violet terminal, continuity should be present. Between the red and black terminals no continuity should be present.

AT MOMENT OF START MOTOR RUNNING

DRIVE MOTOR

To check the motor, first remove the motor harness from the centrifugal switch. Then, set the meter to the R X 1 scale and check the start winding for continuity by testing between the black and yellow wires. A resistance reading between four and seven ohms should be present.

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