Electrolux FDR251RJR0, Руководство по обслуживанию

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6
DOOR LATCH AND SWITCH ASSEMBLY
The door latch and switches are located in the door
assembly behind the control panel. The dishwasher
will not operate until the door is closed. The door latch
engages the door catch mounted on the top frame of
the dishwasher and holds the door firmly to the tub seal.
As the cam in the latch is pushed back, the two door
switches are closed. The door switches are normally
open, double-pole, single throw switches.
To Test the Door Switches
1. Disconnect dishwasher from power supply.
2. Remove screws securing control panel to inner door
panel.
3. Remove wires from switches. Do not remove latch
from door
4. Using an ohmmeter, check for continuity. You should
read zero (0) resistance across switch with door
closed and latched. With door open, your meter
should read infinite resistance, or no reading at all.
5. If either switch shows a bad reading, replace door
latch.
DETERGENT & RINSE AID DISPENSER
The detergent and rinse aid dispenser consists of two
dispensers combined in one housing that are controlled
with one wax motor actuator. The first time the actuator
is energized in a cycle, it dispenses detergent. The
second time the actuator is energized, it dispenses rinse
aid. By removing the cap from the rinse aid dispenser,
you can gain access to a pointer for adjusting the amount
of rinse aid dispensed. The adjustment is from one (1)
to four (4) ml. The dispenser is replaced as a complete
assembly; no replacement parts are available. For a
more detailed explanation on how the dispenser
operates see “Operation of the Dispenser”.
Operation of the Dispenser
The dishwasher has two detergent cups; one is molded
into the inner door panel without a cover. The second
is the dispenser having a spring-loaded cover with a
manual or automatic release latch. Prior to starting the
dishwasher, detergent is added to the dispense cup and
the cover is latched closed. The open cup is also filled
but will empty into the tub as soon as the door is lifted
to the upright position.
The detergent in the covered cup is held until the start
of the second wash. The timer then supplies 120 VAC
to the dispenser for one minute. It takes about 30
seconds for the actuator to move the pivot arm far
enough to release the cover. When the power is applied
to the actuator, the actuator plunger pushes the end of
the pivot arm down. The pivot arm rotates on the shaft
of the detergent dispenser door latch. As the shaft
rotates, it turns the door latch, releasing the spring-
loaded cover.
Wax Motor
Actuator
Door Latch
Shaft
Pivot Arm
Rinse Aid Injector
Pump Arm
The pivot arm is spring loaded so that when power is
removed, it returns to the normal (horizontal) position.
The other end of the pivot arm has a pin that moves in
a slot of the rinse aid injector pump arm. The rinse
injector pump arm is slotted in such a way that when
the actuator pushes the lever down the first time to
release the detergent-cup cover, the pin moves up but
does not raise the rinse injector pump arm. When the
timer removes power from the actuator, the spring forces
the rinse injector pump arm end of the pivot arm down.
The compound slot in the rinse aid injector pump arm
directs the pivot arm pin down the front of the rinse aid
injector pump arm and under a shorter slot in the center
of the arm. When the timer reaches the middle of the
final rinse cycle, it again applies power to the dispense
actuator which forces the pivot arm up at the rinse
injector end. As the pin engages the shorter slot, it raises
the rinse injector pump arm, which operates the pump.