Motor And Pump Assembly; Motor And Pump Assembly In Wash - Electrolux FDR251RJR0 Service Manual

MOTOR AND PUMP ASSEMBLY

The drive motor on this dishwasher is a 1/8 HP, 120
volt, 60 HZ, 1 phase , 3.2 amp, 3450 RPM; internal
thermal overload protected motor. The motor is mounted
under the pump assembly. The pump is direct driven.
The motor itself is dual directional, having three sets of
windings. The main or run winding will run in either
direction. There are two phase or starting windings. One
phase winding starts the motor in a counterclockwise
direction. The other phase winding starts the motor in
the clockwise direction.
Pump housing cover
Water path
through the
pump
This line shows the
path that the water
takes as it enters
the pump and exits
through the
diffuser.
Pump Housing
Macerator

Motor and Pump Assembly in Wash

The timer contact closes to send power to the motor
start relay, then on to the motor, starting the motor in
the counterclockwise direction. As the motor starts, the
water level in the bottom of the dishwasher will be just
to the under side of the heater. The wash impeller pulls
water into the pump housing up under the pump housing
cover. As the water is drawn into the impeller, it must
pass through the center of the housing cover and into
the macerator blade, just under the impeller. This
macerator blade is designed to cut up soft food waste
so it can exit the dishwasher. As the water passes
through the macerator blade, it then enters the wash
impeller and is pushed out into the diffuser housing
where the water is directed into the lower spray arm.
The pump in the wash cycle will pump 24 to 28 gallons
of water per minute into the lower spray arm.
9
Diffuser
Upper impeller
Water path
through the
pump
This line shows
the path that
the water takes
as it enters the
pump and exits
through the
diffuser.