Temperature Controls With Thermistor; Cycles; Pots/Pans - Electrolux FDB1050RE 2005 Service Manual

Prior to starting a wash cycle the proper amount of
detergent is added to the dispenser cups then the
cover is closed and latched properly. Models having
the open pre-wash cup molded in the inner door
panel will have the detergent drop into the tub once
the door is raised to the upright position. Those
models having the pre-wash cup in the dispenser
have openings cut in the cover that allow the deter-
gent to enter the tub once the dishwasher door is
closed.
Adjustment for rinse aid
Openings for
pre-wash
detergent
Dispenser with molded in pre-wash cup
At the beginning of the main wash cycle, power is
applied to the wax motor actuator for one minute.
This causes the wax motor to heat resulting in the
actuator plunger of the wax motor to extend. This
plunger pushes down on a pivot arm. The pivot arm
in turn releases the spring loaded detergent cover
allowing the detergent to enter the tub for the main
wash. The plunger of the wax motor can extend far
enough in 30 seconds to release the cover to dis-
pense the detergent. The extra time is needed to
position the opposite end of the pivot arm to later
dispense the rinse aid. Power is removed from the
wax motor for the plunger retrace. A spring on the
pivot arms returns it to the normal (horizontal) posi-
tion. As the detergent cover is released on the
opposite end of this pivot arm a pin moves up in a slot
of the rinse aid injector pump arm. This slot is formed
so when the pivot arm releases the detergent cup
cover the upward movement does not raise the rinse
injector pump arm enough to release the rinse aid at
the wrong time. In the last rinse, the control powers
the wax motor once more. The plunger extends
moving the opposite end of the pivot arm up causing
the pin to raise the rinse aid injector pump arm, this
releases rinse aid into the tub. Finally, power is
removed from the wax motor, the plunger retracts and
the pivot arm raises. At the same time, next to the
rinse aid injector arm is a leaf spring that returns the
injector arm to the original starting position.
Wax motor
Wax motor
plunger
TEMPERATURE CONTROLS WITH
THERMISTOR
A Thermistor is used by the electronic control to
sense the temperature of the water. The electronic
control is programed with an assured water tempera-
tures in select cycles to insure the proper cleaning of
the load. If these temperatures are not present the
control will pause the cycle to allow the water tem-
perature to increase. This function is accomplished
with information received from the thermistor. The
options that can be selected for high temperature
wash, high temperature rinse or sanitize rinse are
also accomplished with information received from the
thermistor. The assured water temperature can vary
depending on cycle. The following list give the
assured temperature and available options for each
cycle.

CYCLES

Pots/Pans

This cycle is designed for Pots/Pans or your heavier
soiled dishes. The control automatically selects an
assured water temperature of 140° in the main wash
and 155° in the final rinse. The Hi-Temp WASH and
the SANITIZE rinse are automatically selected and
cannot be disabled. The lights over the option pads
for these options will be on as well as the Heated Dry
lit.
9
Injector arm
Pivot arm
Pre-wash cup
Adjustment
for rinse aid