14
Use the Hayward 3” Multi-Port valve (HCV375) for the HCF343T and HCF363T filters. Use the
Hayward 3” Flange Kit (HCF375KIT) for the HCF343F and HCF363F filters. See section 2.3.3.
With the pump turned OFF, arrange the valve(s) for filtration. Start pump, open air relief vent
valve until solid stream of water is coming out. Close the vent valve and read the pressure
gauge. This is the normal start up pressure when the filter sand is clean. Make a note of the
start up pressure.
When the pressure gauge shows a pressure rise of 8 to 12 psi above the start up pressure, it
is time to backwash the filter.
5.2 Backwash
CAUTION
–
Check the water level in the skimmer opening before and after
backwashing. Replace water after backwashing to at least 2 inches above the bottom of
the skimmer opening.
To backwash the filter, stop the pump, set the valve(s) into the “Backwash” position and restart
the pump. The backwash cycle should be run for 3 to 5 minutes. Once backwash is complete,
turn pump off and set valve(s) to the “Filter” position and start pump.
NOTICE-
It is very important to turn off the filter pump(s) prior to changing valve(s)
position.
6. Changing of the Sand
The procedure for changing the filter sand is as follows:
1.
WARNING
Turn pump(s) OFF. Open vent valve. Close necessary valves to
isolate filter.
2.
Remove manway cover and seal from filter. See section 4.4. Open drain port to
drain the water from the filter.
3.
Using a shop vacuum or a small bucket remove the sand.
4.
Using a hose, spray the sand to loosen if necessary.
5.
Clean remaining sand from the walls as best as possible with A hose and vacuum.
6.
Add the new sand as required in Figure 3-1 of this manual.
7.
Replace the manway cover and seal. See section 4.5.
7. Winterizing
Where freezing can occur, be certain to drain the water from the filter tank prior to freezing
conditions.
