Whirlpool Thin Twin - Manual (Page 30)

DRYER MOTOR and BROKEN BELT SWITCH
To check out the motor, first remove the motor harness from the centrifugal switch. Then, set the
meter on the R X 1 scale and check the start winding for continuity. A resistance reading between two
(2) and four (4) ohms should be present.
The broken belt switch is attached to the dryer drive motor bracket. To check the broken belt switch,
set the meter scale to Rx1 and place the probes on the switch terminals. Move the belt pulley up and
down to actuate the switch. The meter should show continuity (0 resistance) when the pulley is pulled
up and an open circuit (infinite resistance) when the pulley is pushed down.
THERMOSTAT HEATER
32AÙ - 3BSOn
START SWITCH
TRIFUOAL SWITCH
CENTRIFUGAL
SWITCH
DRIVE
MOTOR
BROKEN
BELT
SWITCH
OPERATING THERMOSTAT and THERMOSTAT HEATER
The operating thermostat and thermostat heater assembly is located on the blower housing.
To test the operating thermostat at room temperature, set the resistance scale to Rx1 and place the
probes on the terminals with the red and black wires. The meter should read continuity, (0) ohms
resistance. This is because this thermostat is normally closed and will open at temperatures above
150° F.
To test the thermostat heater, remove the two (2) violet wires from the heater terminals. Set the scale
to RxlOO and place the probes on the terminals. The meter should read approximately 35G0 ohms.
DRIVE MOTOR
MAIN 2.4
START 2.4-.3.80
—a
TM
-0—
RESISTOR
40«0 • 4950n
°” a a a -c^AA/Vo-
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