Inst.246 RX Series & E Series Sand Filter V01.15
4
VALVE OPERATION
The operation and the positions of valve settings are as follows:
Valve Settings
Direction of flow through Valve
Filter (also during vacuuming)
From pump down through valve, through sand bed,
up through stand pipe to valve and back through
pool return.
Back Wash
From pump, through valve, down through stand
pipe, up through sand bed, and through valve to
waste.
Rinse
Flow from pump, through valve, down through sand
bed, up through stand pipe, through valve to waste.
(Position also used for initial start-up and leveling
sand bed after Back-wash)
Waste
From pump, through valve to waste. Also position
for lowering water level or assist in draining pool.
Closed
From pump to valve without further circulation.
Prevents any flow to filter and pool.
Recirculate
From pump through valve to pool. This position bi-
passes the filter and is used for circulation of pool
water only.
NOTE: Always “STOP” pump when changing selector valve position.
INITIAL START - UP
1. Make sure the correct amount of media is in the filter tank.
2. Prime pump.
3. Set valve handle in BACK WASH position.
4. Start pump and operate in BACK WASH cycle for three (3) minutes. This will purge the filter of excess
fines in the media.
5. Turn pump OFF and set valve handle to RINSE. Start pump and run for one (1) minute.
6. Stop pump and set valve handle to FILTER. Restart pump. System is now operating on a normal FILTER
cycle.
7. Adjust the valves in the skimmer and main drain lines (if provided) to achieve balanced flow rates.
8. When a pool is filled initially, the filter may have to be BACK WASHED once a day until the water becomes
sparkling clear. From that point on, BACK WASH when pressure gauge indicates 30 to 40 kPa higher
than at starting pressure.
OPERATIONAL & INSTALLATION TIPS
1. Always turn pump
“OFF”
before changing valve positions.
2. Never run pump dry as it depends on water for lubrication.
3. Always maintain minimum water level to
½
way up the skimmer mouth.
4. Clean pump strainer regularly.
5. Maintain a proper chemical balance in the pool.
6. Maximum operating pressure is 250kPa on RX Series and 140kPa on E-Series.
7. Ensure pressure gauge on valve is positioned so that rain water cannot collect on glass face.
8. Back wash filter regularly for 3-5 minutes each time to ensure sand is completely cleaned.
