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Filtration
The Fluid to be filtered flows through the slotted-tube
filter elements of the back-flushing filter, passing from
the inside to the outside. Contamination particles then
collect on the smooth inside of the filter elements. As
the level of contamination increases, the differential
pressure between the contaminated and the clean sides
of the filter increases. When the differential pressure
reaches its pre-set value, back-flushing starts automatically.
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Triggering
Automatic Back-Flushing
Back-flushing is triggered, either automatically, when
the differential pressure is exceeded, by means of an
adjustable timer,
or when the TEST key is pressed.
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Back-Flushing
Cycle
of the Filter Elements
STEP 1 - The geared motor turns the flushing arm
under the filter elements to be cleaned.
STEP 2 - The back-flushing valve is opened. The pressure
drop between clean side and the back-flushing line flushes
contamination backwards into the filter.
STEP 3 - The contamination particles collected on
the inside of the filter elements are loosened and flushed
into the back-flushing line via the flushing arm.
STEP 4 - As soon as the "back-flushing time
per element" has elapsed, the back-flushing valve is
closed. All the filter elements are thus flushed in succession.
STEP 5 - A back-flushing cycle is terminated when
all the filter elements have been cleaned. |
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Special
Fetaures
Back-Flush
Main
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