Alliance Laundry Systems UW35PV Instalación/Mantenimiento página 12

Installation
Machine Overview (
The operator can select from among
39 preprogrammed cycles. Cycle 01 is a test
cycle used to verify proper operation of the
washer-extractor. 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 lev els. Cycle 39 is designed to test an
external chemical injection supply system.
Programmable custom cycles are another
feature of the WE-6 computer.
The vibration safety switch system utilizes a
micro-switch mounted between the faces of
the A-Frame to signal the WE-6 computer that
the load imbalance is too great for high extract
speeds. The vibration safety switch will
protect the machine and operator from injury
by preventing substantially unbalanced loads
from being spun at high speeds. Depending on
the production date and model of the washer-
extractor, the vibration safety switch performs
this task using different methods. Refer to
Operation/Programming Manual for details of
each method.
Water enters the washer-extractor through
electromechanical water valves controlled by
the microcomputer. The microcomputer also
controls the drain and the 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.
On the UW125PV the shell acts as a vacuum
breaker for the 2 fill valves. The spray rinse
inlets are provided with a traditional vacuum
breaker.
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The standard production UW35PV and
UW60PV use a single drain valve. The
UW80PV, UW100PV and UW125PV use dual
drain valves. The dual drains open and close
together under control of the WE-6 computer.
The drain valves are normally open, which
means that they close 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. The doorbox
contains the door-lock microswitch, door-
closed magnetic switch, and the door-unlock
solenoid.
The shaft seal assembly includes a brass collar
held in place on the cylinder shaft with
setscrews. The collar has a flange with a
ceramic ring which makes contact with a
spring-loaded carbon face seal enclosed in a
housing mounted on the rear of the shell. The
collar contains two internal O rings which
maintain contact with the cylinder shaft.
The supply dispenser is mounted on the right
side of the washer-extractor, viewed from the
front. All UWPV's have a polypropylene
supply dispenser. On all machines, the
dispenser has five supply compartments,
numbered 1 – 5, starting from the rear of the
machine. The compartments hold plastic
supply cups that are used for either liquid or
dry supplies. A nozzle flushes supplies from
the cups with water for the time programmed
in the cycle.
F232084