Water Distribution Components; Wash Motor; Upper Spray Arm-Precision Wash; Precision Direct - Electrolux FDB1050RE 2005 Service Manual

WATER DISTRIBUTION COMPONENTS

WASH MOTOR

Both wash systems will use the same motor, a
120VAC fed DC brush style motor. This motor has a
built-in rectifier to change the AC voltage to DC. The
wash motor provides water under pressure for
spraying as well as turning the spray arms.
UPPER SPRAY ARM
PRECISION WASH
The upper spray arm hangs from a bracket that
snaps into the upper rack. Water is supplied to the
upper arm from the sump by a delivery tube to the
top of the tub entering a nozzle water then is sprayed
into a funnel in the center of the upper rack under
which is the upper spray arm. As water enters the
spray arm, the holes are set to cause the arm to turn.
Mount
Funnel
Spray arm

PRECISION DIRECT

The center spray arm is mounted to a delivery tube
on the under side of the upper rack. This assembly
moves in and out with the rack. On the rear of the
delivery tube is a bellows which acts as a seal
between the delivery tube and the rear wall of the tub.
When water under pressure enters the spray arm /
delivery tube assembly, the bellows expands insuring
there is no loss of water pressure for turning the
center spray arm. The Precision direct models also
have a shower nozzle mounted to the top of the tub.
This nozzle sprays water down onto the upper rack as
the center arm is turning.
Delivery Tube

LOWER SPRAY ARM

The lower spray arm rotates on a lower spray arm
support. The lower arm has two functions: washing
the dishes in the lower rack and cleaning off the top
of the filter. Jets on top of the spray arm propel the
arm while spraying water into the lower rack. On the
bottom side of the lower arm are three legs. The two
out side legs will spray across the top of the filter
moving dislodged food partials to the center of the
filter. The third leg is mounted closer to the center of
the filter this leg sprays water down into a center filter
basket to help move this loosened food to the back
section of the sump to be removed in the drain cycle.
Heat shields
Legs for cleaning filter
6
Spray arm