Using The Valve - Harmopool ZFZX4920-P Manual

Using the valve

Filter
Regularly check the pressure gauge. If your initial pressure has increased by 0.2
bar, it is time to backwash.
Closed
The valve is closed, communication with the pump is interrupted. You can now
open the lid of the pre-filtration unit of the pump.
Recirculation
In this position the water doesn't pass through the filter body and flows
directly to the swimming pool.
Use this position when you have put products in the water, for a better distribution of the products.
Backwash
Thanks to the filter medium (sand or glass beads), impurities remain inside the
filter body. The more impurities inside the body, the higher the pressure and
the less well the water circulates. When your initial pressure has increased by
0.2 bar it is time to backwash. The contaminated water is drained to the gutter.
First rinse the pump once again with the Rinse-mode before filtering again.
Empty
In this position the valve sends the swimming pool water directly to the
gutter. This mode is used to empty the pool.
Rinse
After every backwash it is important that the filter medium is compressed.
Put the valve to 'Rinse' and start the pump again for 1 minute. Thereafter, put
the valve in the filter position and your installation is ready again for an
efficient filtration of the swimming pool water.
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