Unbalance Sensing - Electrolux EWFLW65H Technical & Service Manual

Basic Information
To allow the cavities to empty, the cover of the detergent
drawer cover has tubes molded into it that fi t over the
tubes in the cavities.
These tubes are larger than the tubes in the cavity and
are designed to fi t over the tubes, but not touch the
bottom of the cavity when the cover is installed. When
water is added to either the bleach or fabric softener
liquid, the mixture level rises between the tubes above
the tubes in the cavity and fl ows into the washer tub.
Since the end of the tube on the insert does not touch the
bottom of the cavity, a siphoning action will occur when
the solenoid activates and allows water into the cavity.
The added water creates an "overfi ll" condition and starts
the siphoning. The cavity will empty itself when the water
is turned off by the solenoid.
The bleach dispenser channel receives water from the
middle input, as viewed from the front of the washer. The
bleach channel forms a path that allows the water to pass
over the bleach cavity section of the cavity.
As the water passes over the bleach section, holes in the
cavity allow some of the water to enter and mix with the
bleach. This raises the mixture level above the tubes in
the drawer bleach cavity allowing the mixture to fl ow into
the tub.
Like the detergent channel, the fl ow of the incoming water
is more than the holes can dispense, allowing the excess
water to back up into the channel across the rear of the
dispenser and fl ow into the tub. For water to enter the
fabric softener channel, both the middle and right inlets
must be activated. As water from the left inlet passes over
the channel, it collides with the water from the right inlet.
This collision changes the water path directing it to the
front of the cavity and into the fabric softener channel.
The fabric softener channel forms a loop that allows the
water to pass over the fabric softener cavity section of the
drawer.
As the water passes over the fabric softener section,
holes in the cavity allow some of the water to enter and
mix with the fabric softener.
This raises the mixture level above the tubes in the
drawer fabric softener cavity allowing the mixture to fl ow
into the tub. Like the detergent channel, the fl ow of the
incoming water is more than the holes can dispense
allowing the the excess water to backup into the channel
across the rear of the dispenser and fl ow into the tub.
Bleach and Fabric Softener Flow Tubes
An available option is for a liquid detergent cup that is
placed within the main wash compartment. This allows
for the liquid detergent to be dispensed at the proper
time, and allows the liquid detergent to be poured and
held during a delay start or held during the pre-wash.
The drawer front has a button that when pushed,
releases a latch that secures the drawer in the unit.
When the latch is released, a spring in the dispenser
housing assembly pushes the drawer partially open. The
drawer can then be pulled open to pour additives into
the drawer. The drawer is then pushed back into place
and the latch on the drawer front assembly latches to the
conso le to keep the dispenser closed.

Unbalance Sensing

This algorithm determines the amount of either static
unbalance (point unbalance) or dynamic unbalance (two
points of unbalance that are equal and opposite each
other in the drum) in the unit. When distributing the load
the unit monitors the point unbalance until it drops below
a set threshold. When this happens the machine speeds
up to 120 RPM and verifies that the load unbalance is
ready to spin. If the point unbalance is low enough to
allow spin, the unit will accelerate to 250 RPM from 120
RPM, during which time it monitors the dynamic
unbalance. If this unbalance is high enough, the spin
will terminate and the algorithm will proceed to try and
rebalance the load.
1-10
Cover Tube
Cavity Tube