Rautheon UW50PV Manual De Operation página 15

The cylinder is driven by a V-drive system
supported via the shaft by two flange-mounted
spherical roller bearings bolted to the A-frame.
The cylinder is constructed with lifters or ribs
that lift the laundry from the bath solution
when the cylinder rotates at slow speed and
then allows the laundry to tumble back into the
bath. This mechanical action accomplishes the
washing function. The cylinder is perforated,
allowing the water to drain from within during
the wash and extract steps.
The spray rinse feature consists of a fiber-
reinforced clear hose connected to the center
of the door glass and to both a hot and cold
water inlet valve. A hemispherically-shaped
spray nozzle inside the door glass produces a
fan-action water spray which disperses rinse
water throughout the load.
All UWPV washer-extractors use an AC
inverter drive control which provides seven
preset motor speeds using a single motor.
The AC drive interface board converts motor
logic from the WE-6 computer to the correct
signals for the AC inverter drive. In addition,
all logic inputs to the computer are routed
through this board.
The operator can select from among 39
preprogrammed cycles. Cycle 01 is a test cycle
used to verify proper operation of the machine.
With the exception of Cycle 39, the remaining
cycles are complete wash cycles or specialty
cycles designed to handle various fabrics at
specific water temperatures and levels. Cycle
39 is designed to test an external chemical
injection supply system.
Programmable custom cycles are another
feature of the UWPV.
F232050
A balance switch installed between the faces
of the A-frame signals the computer to slow
the washer-extractor when an out-of-balance
load occurs during extract. The washer-
extractor is equipped with an AC inverter
drive. The WE-6 and the inverter drive's
balance detection system will make up to
seven attempts to balance the load during a
drain step. This occurs only if the drive's
balance detection system is connected to the
WE-6 computer.
Water enters the washer-extractor through
electromechanical water valves controlled
by the microcomputer. The microcomputer
also controls the drain and door lock. In
addition, it selects the water levels according
to the programmed cycle. Vacuum breakers
are installed in the water-inlet plumbing to
prevent backflow of water.
The standard production UW50PV model uses
a single drain valve. The UW65PV and
UW85PV use two drain valves. (Dual drains
are available as an option on the UW50PV. The
dual drains open and close together under
control of the WE-6 computer.) The drain
valve is normally open, which means that it
closes only when power is applied, thus
allowing the machine to drain in the event of a
power failure.
A door-lock system prevents opening of the
stainless steel door when a cycle is in progress.
It also prevents operation of the washer-
extractor when the door is open. For models
with a single doorbox, the doorbox contains
the door-lock microswitch, door-closed
magnetic switch, and the door-unlock
solenoid.
Operation
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