Filtration Process - Astralpool CANTABRIC 400 Manual De Instalación Y Mantenimiento

FILTRATION PROCESS

The selector valve has a handle of 6 positions that selects any of the necessary operations to obtain the maximum efficiency
from the filter.
IMPORTANT: Always switch off the pump, when changing the position of the selector valve.
FILTRATION
With the pump switched off, place the handle of the selector valve in the FILTERING
position.
Switch on the pump.
When starting up for the first time, read the pressure of the pressure gauge. It is
recommended to take note of this pressure, as later it will be used to know whether the
filter is dirty and if "WASHING" is required. "WASHING" should be done when the
2
pressure gauge indicates an increase of 0.5 kg/cm with respect to the initial pressure of
the filter. it is advisable to observe the pressure gauge from time to time as this indicates
the degree of saturation of the filter
Bear in mind that the valves at the bottom of the pool and the skimmers will be adjusted
according to the amount of floating particles on the surface of the water. The main drain
and skimmer valves will be regulated according to the quantity of floating material found on
the surface of the water. Bear in mind that with the main drain valve fully open there will
be little suction from the skimmers. If the surface sweep of the skimmers is to be stronger,
reduce the flow from the main drain.
Example:
0,8 kg/cm² - 11,4 PSI: Initial pressure of 1,3 kg/cm² - 18,5 PSI: The pressure is 0.5 kg/cm 2 more
the filter at the start of a filtering cycle. than the initial pressure, indicating that WASHING is required.
BACKWASH
Each load of sand forms thousands of channels which pick up all the material contained
and caught up in the filtering process, the number of free channels allowing the water to
pass is continually decreasing. This is why the pressure rises progressively until it an
increase of 0.5 kg/cm 2 . At this pressure the filtering sand is unable to collect any more
impurities and must be cleaned as follows:
Turn the selector valve to the "BACKWASH" position and with the main drain and return
valves open, switch on the pump and run it for 2 minutes. When this operation is
completed, the dirt blocking the filter will have been removed.
Attention: Too much time in this operation could cause damage to the filter collector unit.