Electrolux AMANA ADW350RA 0 Series, Service Manual, Page: 18 / 86

Page 17
DISPENSING SYSTEM
Detergent & Rinse Aid Dispenser
The detergent & 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. The amount of rinse aid dispensed can be
adjusted from one to four (1 - 4) by using a pointer under
the fill cap. The dispenser is replaced as a complete
assembly. No individual replacement parts are available.
Dispenser Operation
The dispenser has two detergent cups:
1. A cup with a spring loaded cover with a
manual or automatic release latch.
2. A cup formed in the inner door panel without
a cover.
Prior to starting the dishwasher, detergent is added to
the dispenser cup and the cover is latched close. The
open cup is also filled but empties 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 actuator for one minute. It takes 30
seconds for the actuator to move the pivot arm far
enough to release the cover. When 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.
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(s) of the rinse 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 armdown. The
compond slot in the rinse injector pump arm directs the
pivot arm pin down the front of the rinse 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 120 VAC to the dispenser 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 operatesthe pump. When the
power is removed, the pivot arm spring forces the pin to
the bottom of the slot. A leaf spring pushes the rinse
injector pump arm to the left so that the pin returns to the
original starting position.
DOOR LATCH ASSEMBLY
The door latch assembly has two functions; one is to
lock the door in a closed position and the other is to
operate the door switches.
The door latch assembly consists of the door handle,
door handle bracket, door catch, door switch bracket,
and door switches. The assembly is secured to the
inner door panel with two locater pins and two screws.
The panel is hidden by and accessed through the
control panel.
When the door is closed, the door strike (mounted on
the tub) forces the spring loaded catch to rotate back
until the bottom of the catch clears the door handle
bracket. At that time, the spring forces the door handle
bracket to rotate. The bar at the top of the door handle
rotates back under the door catch locking the door. The
plunger on the bottom of the bracket rotates forward,
closing the door switches.
The door is released by lifting up on the door handle.
When the handle is lifted up, the door handle bracket
rotates in at the top, allowing the door catch to rotate
open, and out at the bottom to open the door switches.
When the catch is rotated to the open position, it holds
the door handle bracket away from the door switches.