Series RF3 Operation

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.

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.

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 backflushing 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.