ALLIANCE HWF561*E1102 Service page 10

Section 2 Introduction
General
This frontload washer provides some of the same
principles of operation as the typical topload washer. It
senses water level, dispenses the desired laundry
detergent, agitates the clothes for good cleaning
action, pumps the water out of the washer and spins
the clothing in preparation for the dryer.
The difference in operation is primarily the rotational
washing agitation created for the horizontal basket and
drum. This agitation tumbles the clothes in a
clockwise, pause, and counter-clockwise direction.
This reversing tumbling action provides an efficient
washing process and requires less laundry detergent
and less water.
The cycle begins by locking the loading door after the
vend is satisfied. The type of cycle and water
temperature are determined by the appropriate pads on
the electronic control.
The inner basket starts agitating during the wash water
fill. A column of air is trapped in a pressure bulb and
hose. The air pressure continues to increase as the
inner basket fills with water until it is great enough to
activate the pressure switch which then causes the
wash fill to stop.
The agitate cycle tumbles the clothing in a clockwise
direction for a period of 20 seconds, pauses for 9
seconds and then tumbles the clothing in a
counterclockwise direction for 10 seconds. This
agitation continues until the wash soak cycle. The
machine stops agitating and turns on the pump which
removes the wash water.
Upon completion of the wash cycle, the machine goes
into a rinse cycle. Fresh cold water is brought into the
inner basket via the mixing valve until the pressure
switch shuts off the water while agitating. The rinse
cycle consists of agitation for a predetermined amount
of time and then a spin mode with the pump running
where the machine goes into a series of 4 short 500
RPM spins. Two of these rinse cycles will normally
take place. A third extra rinse cycle is optional.
After all the rinse cycles have been completed, the
washer goes into a final high spin cycle to extract as
much water as possible from the clothing to prepare
them for the dryer. The spin speeds and duration of
this final high spin cycle are determined by the type of
wash cycle selected (refer to table).
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© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NOTE: Washer may not reach 1000 RPM because
of an out-of-balance condition. Control may limit
speed to 850, 650 or 500 RPM depending on severity
of out-of-balance condition.
Regular
650 5-1/2
RPM minutes
1000 1-1/2
RPM minutes
Technical
The basic operational system of this washer consists of
the electronic front-end control, the motor control,
pressure switch, water valves, electric pump, D.C.
motor and transformer.
The front end control performs all control and timing
functions like the timer in a topload washer. The front
end control sends simple speed and output commands
to the motor control via serial communication. The
front end control powers the door lock, pump and the
motor control.
The motor control powers the D.C. motor and
performs all motor control functions. The motor
control also powers the water and dispenser valves and
passes the pressure switch status to the front end
control. The motor control is powered through the
door switch, door lock switch and front end control.
An auto transformer provides 240 VAC for the motor
which the motor control converts to D.C. The motor
control also alerts the front end control to any errors in
the motor.
The motor control uses a speed sensor on the motor to
measure the drum RPM. Before entering any spin step
the motor control measures the RPM of the drum to
sense out-of-balance. The motor control will try to
redistribute the clothes if an out-of-balance condition
exists. The motor control will limit the spin speed to
several speeds depending on the severity of the out-of-
balance condition. If the out-of-balance condition is
severe enough, the motor control will limit speed to 90
RPM and will not spin.
NOTE: An additional out-of-balance switch is used
to detect any out-of-balance condition during spins.
If this switch opens during a spin step the motor
control immediately stops and restarts the spin step.
Perm Press Delicate
6 4
minutes minutes
1 0
minute minutes
800168