10
The pump restarts the
water pressure in back
of the ball forces the
check ball up into the top
hole in the volute cover
blocking water tothe
lower spray arm. Water
exits the rear hole into
the delivery tube supply-
ing water to the upper
spray arms.
Water in the delivery tube is divided with 80% going
to the center spray arm and 20% to the upper arm.
Water spray will continue from the upper spray arms,
after a predetermined time the control will again
pause the pump this time the pause will be for 3
seconds. This longer time allows for the delivery
tube to completely drain then the check ball returns
to the bottom of the ramp. The pump restarts with
spray from the lower spray arm completing a spray
arm change cycle.
Wash Pump
T
he speed of the motor is determined by the elec-
tronic control based on the cycle selected. The
control continually monitors motor speed with input
from a Hall Effect sensor mounted to the rear of the
wash motor. Input voltage for operating the motor
will be 120VAC with the motor changing this to VDC
with a built-in rectifier.
Parts in the wash System
These model dishwashers use a variable speed DC
motor. The variable speed motor is used to im-
prove cleaning by varying the water pressure
depending on the cycle selected. An Ultimate
Scrub and Maxx cycle intended for heavily soiled
dishes will have a high pressure speed to better
remove baked on food where a China/Crystal cycle,
for very delicate items will have a very low water
pressure setting. The user has an option to change
the motor speed on some models. There is an
added advantage of quieter operation when the
lower speed is used. The motor and wash pump
are supplied as a one piece assembly.
Stainless Steel Filter
The stainless steel filter covers the entire sump area.
The filter is intended to remove all food particles from
the water so only clean water reenters the sump.
There is a fine mesh polyester screen housing in the
center of the stainless steel filter to house a lift out
basket to catch larger items, this basket can be
removed for cleaning. On the bottom of the inner
screen housing there is a soil director used to direct
food soil removed from the dishes to the left side of
the sump to be removed first when the water is
drained from the tub. The lower spray arm support
is also used as a lock for the filter to insure it is down
tight to the sump. See figure 11
Ball at the top of ramp
opening hole to center arm
Figure 9
Figure 10
Figure 11
