8
INSTALLATION
IMPORTANCE OF BACKWASHING
The importance of backwashing cannot be overstated. Dense filter media can become “packed” without
proper and frequent enough backwashing. Debris will remain trapped and create channelling within the
filter bed. This will result in the filter bed exhausting early. Moreover, if debris is not flushed from the media
grains, the filter bed will become dirtier and dirtier as time goes on until the filter operation fails.
BACKWASHING INSTRUCTIONS
1. Switch off the Pump. Close the Inlet Valve.
NOTE
: If a pump is installed, switch the pump on and off,
instead of closing and opening the Gate Valve.
2. Release the filter’s pressure by loosening Pressure Release Valve until the Pressure Gauge needle
drops to zero <0>.
3. Re-tighten Pressure Release Valve.
4. Depress and turn Handle to the
BACKWASH
position. In the
BACKWASH
position, the water flow is
automatically reversed through the filter so that it is directed to the bottom of the filter vessel, up through the
sand, flushing the previously trapped dirt and debris out the waste line.
5. Switch on the Pump. Backwash water will flow out through drain pipe.
6. When the backwash water in the sight glass appears clear, switch off the Pump.
7. Depress and turn the handle to the
RINSE
position. In the
RINSE
position, the water flow is directed
through the filter bed and out of the filter through the backwash outlet. This process settles the filter media
bed into place and ensures any dirt or debris is rinsed out of the filter, preventing possible return to the
pool.
8. Switch on the Pump. Rinse water will flow out through the drain pipe.
9. When the rinse water in the sight glass appears clear. Switch off the Pump.
10. Depress and turn the handle to the Filter position and switch on the Pump.
