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4.1
Filter backwash
Before using the filter for the first time, carry out a backwash to clean the filter, remove excess sand and
remove the dirt particles trapped in the sand.
After the backwash, turn the valve to the filtration position and switch the pump on, the black needle
in the pressure gauge indicates a pressure, this is the pressure inside the filter. This pressure will
vary depending on the pump flow rate, the static pressure and the pressure drops in the pipes.
To keep a trace of this nominal pressure, line the blue manometer needle up with the black one.
After a certain amount of filtration, the flow rate at the water return will drop. This is caused by the progressive
clogging of the filter or the pump prefilter.
4.1.1 If the filter pressure drops below the blue needle
The pump pre-filter must be cleaned:
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Shut down the pump
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Put the 6 way valve to the CLOSED position
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Close the suction valves A, B, C, D (skimmers, main drain) and the water return E
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Open the pre-filter and remove the basket
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Remove all dirt particles using a water hose jet
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Put the basket back
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Put the lid back on the pre-filter, making sure that the O-ring is still in
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the correct position and that there is enough water to start the pump
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Turn the 6-way valve to FILTRATION
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Open the suction valves A, B, C, D (skimmers, main drain) and the water return E
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Start the pump
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Release any air trapped in the filter.
This operation must be carried out each time the pool is vacuumed and at least once a week
4.1.2 The filter pressure is above the green zone
Backwash the filter:
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Shut down the pump
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Check, if the pre-filter is clogged (If it is clogged, clean it as described above)
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Turn the 6-way valve to BACKWASH
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Open the 1/4 turn valve (F) on the waste outlet
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Start the motor
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Watch the water colour through the sight glass of the 6-way valve.
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Please note that it will take a few seconds for the cleaning process to start
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Turn off the pump when the water runs clear
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Put the 6-way valve to RINSE
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Run the pump for about 20 to 30 seconds. The purpose of rinsing is to remove the remaining dirt particles
from the main valve and to allow the sand to settle
•
Turn off the pump
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Put the 6 way valve to FILTRATION
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Restart the pump
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Close the 1/4 turn valve (F) on the waste outlet.
After completion of this backwash procedure the black needle should return to line up with the blue needle
(the needle indicating the nominal pressure).
Call your fitter, if the pressure does not decrease after the first (or even the second) backwash.
CONSTRUCTION & RÉNOVATION
2021/01 - Indice de révision : E - Code : 26622
21/36
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