Pellerin Milnor Corporation 111
After a recycle, the OoB detection system evaluates if the amount of imbalance can be offset by
the machine balancing system. If the amount of imbalance is below a certain threshold, the bal-
ancing system balances the load by injecting water in the cylinder ribs opposite the imbalance.
The washer-extractor then attempts to complete the extract step at the programmed speed.
6.1.1.2.1 If the Extract Step is an Intermediate Extract
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The OoB detection process begins when the cylinder reaches drain speed.
1. The OoB detection system compares the amount of imbalance to a fixed threshold value.
• If the imbalance is less than the fixed threshold value, the balancing system balances the
load and the machine completes the extract step at the programmed speed.
• If the imbalance is greater than the fixed threshold value, the machine completes the ex-
tract step at a reduced speed (210 RPMs).
2. The OoB detection system continues to monitor the imbalance until the end of the step.
6.1.1.2.2 If the Extract Step is a Final Extract
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1. The machine performs a preemptive recycle in drain speed.
2. After the recycle, the OoB detection system evaluates whether the amount of imbalance can
be offset by the machine balancing system.
• If the imbalance can be offset, the balancing system balances the load and completes the
extract step at the programmed speed.
• If the imbalance is too large to be offset by the balancing system, the machine performs
up to three recycles.
– If the imbalance falls within the allowed threshold before or by the third recycle, the
balancing system balances the load and the machine completes the extract step at the
programmed speed.
– If the imbalance remains above the maximum allowed threshold value after the third
recycle, the machine completes the extract step at a reduced speed (210 RPMs).
3. The OoB detection system continues to monitor the imbalance until the end of the step.
6.1.1.2.3 If the Excursion Switch Trips
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If the excursion switch trips while the cylinder accelerates to the programmed extract speed, the
following events occur:
1. The machine performs a recycle.
2. After the recycle, the OoB detection system recalculates the amount of imbalance
• If the new imbalance is less than the lowest threshold value, the machine completes the
extract step at the programmed speed.
• If the new amount of imbalance can be offset, the balancing system balances the load and
the machine completes the extract step at the programmed speed.
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