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6.
RECOMMENDATIONS
IMPORTANT:
Upon putting the filter into operation for the first time observe the direction of water flow attentively: in
"Filtration" position, water should flow from the top of the filter to the bottom. In the event that the pipes
were inverted during assembly or that the multiport valve is faulty, water will travel from the bottom to the
top leading swiftly and inevitably to damage to the collector plate and the walls of the tank. The following
signs are strongly suggestive of incorrect assembly:
•
low pressure reading at the pressure gauge.
•
a rapid drop in the flow rate even after backwashing the filter and ensuring that the pump prefilter is
clean.
•
continuously cloudy pool water.
6.1
FILTRATION RUN TIME:
The filtration run time is determined by the theoretical time it would take for the total water volume to pass
through the pump.
For a family pool, the allowed recycling time is 6 hours min.
We recommend the following run times as a function of water temperature:
•
below 14° C: 5 to 6 h per day.
•
from 15° to 23° C: 6 to 8 h per day.
•
above 23° C: 10 to 12 h per day.
The busier the pool and the higher the water temperature the longer the filtration run times that will be
necessary to ensure clean water. To optimise filtration efficiency, run the filter during the day only (between
8:00 am and 9:00 pm) and while the pool is in use (one person in the pool pollutes 3 m3 of water). This
recommendation does not apply to above ground pools in which, as a safety measure, filtration should
be stopped while the pool is in use (for this type of pool, programme filtration just after the bathing times)
IN ABOVE GROUND POOLS FILTRATION SHOULD BE STOPPED, AS A SAFETY MEASURE, WHILE THE POOL IS IN USE.
7.
BACKWASHING:
Before putting the filter into operation, carry out a backwash to clean the filter medium and remove excess
sand along with any dirt or debris.
Next, switch the valve to Filtration and turn the pump on,The needle on the pressure gauge indicates the
nominal pressure experienced by the filter. This pressure will vary as a function of pump flowrate, static
pressure and head loss across the pipes.
To preserve a trace of this nominal pressure, align the red needle of the pressure gauge with the needle
indicating the nominal pressure.
After a time, the flowrate at the pool return will drop due to the gradual build up of dirt and debris in the
filter or pump prefilter.
1.
The filter pressure falls below the pressure indicated by the red needle of the pressure
gauge: clean the pump prefilter.
•
Stop the pump,
•
Switch the multiport valve to "CLOSED",
•
Close the suction and return valves,
FILTRATION BWT myPOOL
CAUTION!
2019/05 - Indice de révision : H - Code : 26660
19/40
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