Automatic Filters Tekleen MSAF Benutzerhandbuch - Seite 6
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Seite drucken1.3 Theory of Operation
Pressurized water enters the filter inlet and travels through the neck of the filter to
the body. The water then passes through a fine mesh screen where small
contaminants are filtered out. The clean water then exits through the outlet of the
filter.
As more water flows through the filter the screen becomes contaminated. The
accumulation of impurities causes a pressure imbalance on either sides of the
screen. When the difference in pressure (ΔP) reaches 0.5 bar the pin on the
pressure indicator will pop up. This is the optimal pressure differential to initiate a
flush cycle to prevent reduced filter performance. At this time the operator should
initiate a flush but may initiate one at a later time in accordance to an
independent timetable determined by the operator.
To perform the flush, the operator may follow the steps below:
1) Confirm that the dirt collector is in its' fully lowered position by turning the
handle clockwise until it stops.
2) Open the flush valve completely.
3) Turn the handle of the dirt collector counterclockwise until the dirt collector
comes to a stop in the fully raised position.
4) Close the flush valve completely.
When the flush valve opens, water begins to flow out reducing the pressure in
the flush chamber and dirt collector. The drop in pressure allows the nozzle to
generate a suction. The turning of the dirt collector and the spiral axis motion
allows the entire inside of the screen to be suctioned. It should be noted that
even during the flush cycle, the filtration process continues uninterrupted.
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