Filtration; Backwash; Rinse - Kripsol NORDIK Serie Manual De Instrucciones

You can also install an automatic saturation alarm that will
warm when the filter has achieved the selected pressure.
VALVE
1
2
3
4
5
Fig. 10
2
PUMP
POOL
3

FILTRATION

5.2. Backwash.

The filtration bed forms thousands of channels that collect the
impurities and solid residue contained in water.
In the course of time sediment may block the collector system
and dirt.May blind the filter medium. In order to clean the filter
backwash must be carried out. Stop the pump and put valves
in position. Figure 11.
The washing time will depend on the filtering medium
selected. According to DIN 19643 the should be 7 minutes, at
a speed of approximately 50m³/h/m², this being understood to
refer only to de water washing phase. However, NORDIK series
filters incorporate an internal filtration system with a plate-based
nozzle manifold, which allows in a flow of air while washing and
thereby reduces water consumption. This considerably shortens
the washing time, reduces costs and saves water.
It is advisable to put a sight glass in the overflow tube to check
the lengh of backwash.
VALVE
1
2
3
4
5
POSITION
CLOSED
OPEN
OPEN
CLOSED
CLOSED
4
DRAIN
1
5
POSITION
OPEN
CLOSED
CLOSED
OPEN
CLOSED
Fig. 11
PUMP
POOL
3
BACKWASH

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 or 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, Figure 12.
Keeping the pump stopped; after this, they must be
immediately returned to position of filtration.
VALVE
1
2
3
4
5
Fig. 12
PUMP
POOL
3
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. Figure 13.
13
2
4
DRAIN
1
5
POSITION
CLOSED
OPEN
CLOSED
CLOSED
OPEN
2 4
DRAIN
1
5
RINSE