Hidrotermal Filtration Combo PC Series Gebruikershandleiding - Pagina 4
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Pagina afdrukken4.Filter's Start-Up
1.Make sure the correct amount of filter sand is in tank and that all connections have been correctly made and
are secured.
2.Push the down control valve handle and rotate to BACKWASH position.(To prevent any damage to control
valve seal, always push down the handle before turning.)
3.Start the pump according to the pump manual (Make sure all suction and return lines are opened), allowing the
filter tank to fill in with water.)
All suction and discharge valves must be open before operating the filter system. Failure to do
so could cause severe personal injury and/or property damage. Once water flow is steady out
the waste line, run the pump for at least 2 minutes.An initial backwashing of the filter is
recommended to remove any impurities or fine sand particles in the sand media.
4. Turn pump off and set valve to RINSE position. Start pump and operate until water in sight glass is clear-
about to 1 minute. Tum pump off and set valve to FILTER position and restart pump. The filter is now operating
at the normal filtering mode, removing dirt particles from the pool water.
5. Adjust the pool suction and return valves to achieve desired flow. Check the system and the filter for water
leaks and tighten connections, bolts, nuts, as required.
6. Acknowledge the initial pressure gauge reading when the filter is clean. (It will vary from each pool depending
on the pump and general piping system.) As the filter removes dirt and impurities from the pool water, the
accumulation in the filter will cause the pressure to rise and flow to diminish. When the pressure gauge reading
is 8-10 PSI (0.55-0.69 BAR) higher than the initial "clean" pressure you noticed, it is time to backwash (clean)
the filter (see BACKWASH under Filter Control Valve Functions).
During initial clean-up of the pool water, it may be necessary to backwash frequently due to the
unusually heavy initial dirt load in the water.
To prevent unnecessary strain on piping system and valves, always shut off pump before
switching filter control valve positions.
To prevent damage to the pump and filter and for proper operation of the system, clean pump strainer and
skimmer baskets regularly.
5. BACK WASHING
The function of backwashing is to separate the deposited particles from filter media grains and flush them from
the filter bed. Backwashing is achieved by reversing the flow of water through the filter bed at a fairly high flow
rate. This high flow rate expands the filter bed and the water collects the debris taking it to waste.
1. CONDITIONS FOR BACKWMHING
Time for backwashing is determined by the following conditions:
a. The flow rate through the filter bed decreases until it is insufficient to meet the demand.
b. The removal efficiency of the filter bed decreases to the point where the effluent quality deteriorates and is no
longer acceptable.
c. When the pressure gauge reading is 50 kPa (7.2 psi) higher than the start up pressure.
d. If the filter is connected to mains water, pressure rise is not an accurate indicator as mains pressure tends to
fluctuate. It is best to rely on the actual flow rate.
Recommends that you backwash a swimming pool sand filter in a residential installation at
least once a month.