16
CYCLE, SYSTEMS & COMPONENTS
WASH MOTOR (CONT.)
Checking the Wash Motor
· Disconnect dishwasher from power supply
· Due to the location of the motor disconnect plug,
resistance readings should be made at the control
- Remove outer door panel to gain access to the
control
- The run windings for the motor are connected
between P3-1 and P3-4
· The resistance should read 14 ohms
Checking the Tachometer
· Disconnect dishwasher from power supply.
· Due to the location of the motor disconnect plug,
resistance readings should be made at the control.
- Remove outer door panel to gain access to the control.
- The tachometer leads are between P3-10 and P3-11.
- The resistance should read 246 ohms.
HEATER
The heater in this dishwasher is inline between the
wash motor and the delivery tube. The 1200W
heater wraps around a stainless steel core tube.
The heater can only be energized, during a wash
cycle, while the wash pump is running after the low
level pressure switch has been activated. Water is
heated as it passes through the heater to the center
spray arm. This heater has internal thermal
protection.
While checking the heater, do not apply power to
it until the tub has filled with water and the
motor is operating!
Figure 13
Tachometer mounted on the rear of the
motor
In line Heater
Figure 14
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