Procopi Wewa Rectangle Notice De Montage page 75

COMMISSIONING AND OPERATING
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RECOMMENDATIONS (CONT)
PRE-FILTER
1 - If the pressure indicated on the pressure gauge falls below the nominal pressure
indicated by the blue needle, clean the pump pre-fi lter.
- Stop the pump.
- Turn the 6-way valve to CLOSED.
- Close the suction and return valves.
- Open the pump pre-fi lter.
- Remove the basket.
- Use a water jet to remove any impurities.
- Put the pre-fi lter basket back.
- Put the pre-fi lter lid back on making sure that the seal is correctly positioned and that
there is enough water to prime the pump.
- Move the 6-way valve to FILTRATION.
- Open the suction and return valves.
- Switch the pump on.
- Vent the fi lter (this should be done each time the pre-fi lter is cleaned and at least
once a week).
FILTER
2 - If the pressure indicated by the pressure gauge rise above the nominal pressure,
carry out a fi lter back wash.
- Stop the pump.
- Check the pre-fi lter and clean it out if necessary (as indicated above).
- Before proceeding with a fi lter back wash or draining the pool, make sure that the
waste pipe (not provided) has been attached to the waste outlet.
- Put the 6-way valve to BACK WASH.
- Turn the pump on.
- Observe the colour of the water in the turbidity sight glass.
CAUTION a few seconds will elapse before cleaning begins (water becomes cloudy)
- As soon as the water runs clear, stop the pump.
- Put the 6-way valve to RINSE.
- Switch the pump on for 20 to 30 seconds, to remove impurities and settle the sand.
- Stop the pump.
- Turn the 6-way valve to FILTRATION
- Switch the pump on.
After a back wash, the pressure in the fi lter should drop back down to the nominal
pressure.
CAUTION
◗ For further
information refer
to the instructions
provided with the
sand fi lter
The pump should
◗
never be allowed
to run dry (without
water
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