5.3 Rinse.
This process can only be done when a five valve battery
has been installed.
Rinse must be carried out immediately after backwash to
discharge the remaining impurities that could have
entered in the collectors during the
filter’s backwash.
The length of rinse is 3 minutes (according to DIN
19643); this will prevent impurities appearing again in
the network. To perform rinse, valves must be in
position Fig. 15. Keeping the pump stopped; after this,
they must be immediately returned to position of
filtration.
5.4-Drain.
When the pool has to be emptied, if its drain does not
contain an overflow directly linked to the sewer, it can
be drained using the filter’s pump and putting valves in
position. Fig. 16.
Before starting draining, it is necessary to check that the
skimmer’s valves, overflow channel and vacuum cleaners
are closed.
5.5-Closed.
It is used to perform maintenance on the filter, clean
prefilters, etc. As its name shows, all valves must be
closed.
