Circulation Pump and Motor
The dishwasher has a new pump design that includes a wax motor, magnet, and a steel ball used for Single Rack WashTM. This pump must be replaced with the same pump design (kit # WD26X10029).
The pump housing contains a molded channel to direct the movement of the ball towards the venturi. The plastic shell which encases the stainless steel ball has ribs to prevent the ball from sticking in the venturi.
The dishwasher must be removed from its
installation to gain access to the circulation pump and motor. The circulation pump can be activated using Service Mode. Refer to schematic or strip circuit for motor resistance value.
Before removing the circulation pump, remove the water from the sump with a syringe.
It is important to remember that the motor does not start immediately when the dishwasher cycle has started (60 seconds after water begins to fill). If the motor hums but will not start, make certain the pump impeller is free from obstruction and the motor shaft turns freely.
The terminals on the induction motor are labeled L1 and N. The motor is thermally protected (internally) through the L1 side. The wiring connector is blue to match the wire leading to the motor. It is designed to fit only one way on the terminals. Make certain the connector is fully seated when installing.
The replacement motor pump assembly contains a new ball.
Caution: Be sure the ball is in place and held by the magnet before reassembling the unit.
Note: It is important that the
Circulation Pump and Motor Strip Circuit
CIRCULATION
PUMP
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Wax Motor and Magnet
The wax motor and magnet (part # WD21X10235) are an assembly and are held to the pump housing by 2 Phillips screws. The wax motor operates on 120 VAC. It takes approximately 45 seconds for the magnet to retract far enough to release the steel ball when the wax motor is at room temperature. The wax motor is energized for approximately 1 minute.
If the dishwasher door is opened during the Single Rack WashTM, the ball will once again be held by the magnet until the wax motor retracts the magnet from the steel ball (approximately 45 seconds).
Wax Motor Strip Circuit
WAX MOTOR
(CIRCULATION PUMP)
GRAYWHITE
1200 - 2800 W
– 30 –