Balance Detection; Balance Switch Detection; Inverter Drive Balance Detection - Rautheon UW50PV Manual De Operation

Operation

Balance Detection

The washer-extractor may be equipped with
either of two balance detection systems: (1) a
balance switch detection system or (2) an
inverter drive balance detection system.

Balance Switch Detection

If the washer-extractor is equipped with the
balance switch detection system, the 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.
If the balance switch is tripped, the out-of-
balance LED indicator located in the upper left
corner of the first digit of the display will light
and will remain lighted until the end of the
extract step. This indicator tells the operator
that an out-of-balance condition existed during
an extract step. The washer-extractor will
attempt to balance three times during an
extract step.
If on the third attempt the out-of-balance
condition continues, the washer-extractor will
advance to the next step. (If the next step is
another spin step, it will be skipped also.)

Inverter Drive Balance Detection

If the washer-extractor is equipped with the
inverter drive balance detection system,
balance is detected by the inverter drive during
a drain step as opposed to an extract step.The
WE-6 computer will make up to seven
attempts to balance the load during a drain
step. During the final balance attempt, the out-
of-balance LED indicator located in the upper
left corner of the first digit of the display will
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light. The indicator will remain lighted until
the drain step is complete.
If on the seventh attempt the load is not
balanced, the washer-extractor will continue
to the next step in the cycle following the
drain step that is not a spray rinse or spin step.
Therefore, if one spin step or two or more
consecutive spin steps follow, all will be
skipped if seven attempts to balance the
load in the drain step fail. High speed steps
include rinse steps and medium, H1, H2, or
H3 spin steps.
Note: The computer cannot advance through a
drain step, nor will the computer allow starting
a cycle in a spray rinse or spin step.
Note: A drain step must be programmed prior
to a high speed step to allow for inverter drive
balance detection. Otherwise, spin steps will
be skipped by the computer.
If the washer-extractor is equipped with the
inverter drive balance detection system, the
balance switch serves to remove power from
the machine. This means that if the washer-
extractor balance "passes" the inverter drive
balance detection system at the drain step but
the balance switch detects an out-of-balance
load condition at the extract step, power will
be removed from the washer-extractor.
At this point, the LED display goes blank on
the WE-6 computer, and the washer-extractor
coasts to a stop. Such a condition indicates a
serious problem. Contact a service technician
before attempting to restore power to the
washer-extractor.
F232050