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There are two kinds of backwashing: automatic
and manual. For the automatic backwash, when inner
pressure reaches a predetermined value on the pressure
switch ¨ê due to SS clogging in the filtering
process, the pressure switch begins operation and initiates
the backwash. Manual backwash is processed in the
same order as the automatic routine, when the manual
backwash switch installed on ¨ê is turned
on.
1) In the filtering process, when pressure reaches
a predetermined value on the pressure switch ¨ê,
the filter stops ¨ë , valves 1 and 4 of ¨ï are
closed, and valves 2 and 3 are opened.
2) Also, ¨ì is in the forward-operation
state revolving ¨í, which causes the inner revolving
cylinder of ¨Û to
rotate. As a result, the chemical textile single strand
threads hang loose.
4) Then, ¨ë is turned on and the water
flows in the arrow's direction. The SS accumulated
in the filtering process is
eliminated by running water in the direction opposite
to the movement of the filtering
process.
5) The backwashed water is returned to the initial
inflow area of the filtering container.
6) When the specified backwashing process time is
over, the filter stops ¨ë , valves 2 and 3 of ¨ï are
closed, and valves 1 and 4 are opened.
7) Also ¨ì is in the backward-operation
state revolving ¨í in the opposite direction,
which tightens
up the filter composed of chemical textile single strand
threads. Then ¨ë is put into operation,
which begins the filtering process again.
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