Use and Care Manual

INSTALLATION
7
INITIAL STARTUP OF FILTER
Be sure correct amount of lter media is in tank and that all connections have been made and are
secure.
1. Depress Multiport Valve handle and rotate to the BACKWASH position. NOTE: To prevent damage
to control valve seal, always depress handle before turning.
2. Switch on the Pump. (OPTIONAL) If a gate valve is installed open the valve before turning on the
pump, allowing the lter tank to ll with water.
3. Once water ow is steadily exiting the waste line, run the pump for at least one minute. The initial
backwashing of the lter is recommended to remove any impurities or ne sand particles in the lter
media.
4. Turn the pump off. Set the Multiport Valve to the RINSE position. Switch on the Pump and allow it to
run until water in sight glass is clear - approximately 10 to 15 seconds.
5. Switch off the Pump. Set the Multiport Valve to the FILTER position and Switch on the Pump. Your
lter is now operating in the normal lter mode.
6. Adjust pool suction and return valves to achieve desired ow. Check the plumbing and lter for water
leaks and tighten connections, bolts, and nuts, as required. NOTE: During initial clean-up of the pool
water, it may be necessary to backwash frequently due to the unusually heavy initial dirt load.
7. Record the pressure gauge reading (start up pressure) during initial operation. After a period of time,
the accumulated dirt and debris in the lter causes a resistance to ow, and the ow diminishes. The
pressure will start to rise and the ow of water will start diminishing. When the pressure gauge reading is
8-10 PSI higher than the initial “Start up” pressure, it is time to backwash (clean) the lter.
CAUTION: All suction and discharge valves must be open when starting the pump. Failure to do so could
cause severe personal injury and/ or property damage. NOTE: If a pump is installed, switch the pump on
and off, instead of closing and opening the optional gate valve.
NOTE: To prevent unnecessary strain on piping system and valve, always shut off the pump before
switching lter control valve position. To prevent damage to the pump and lter and for proper operation
of they system, clean pump strainer and skimmer baskets regularly.
BACKWASHING CONDITIONS
The function of backwashing is to separate the deposited particles from lter media grains and ush
them from the lter bed. Backwashing is achieved by reversing the ow of water through the lter bed
at a fairly high ow rate. This high ow rate expands the lter bed and the water collects the debris
taking it to waste.
Time for backwashing is determined by the following conditions:
1. The ow rate through the lter bed decreases until it is insufcient to meet the demand.
2. The removal efciency of the lter bed decreases to the point where the efuent quality deteriorates
and is no longer acceptable.
3. When the pressure gauge reading is 8-10 PSI higher than the start up pressure.
4. If the lter is connected to the water main, pressure rise is not an accurate indicator as water main
pressure tends to uctuate. It is best to rely on the actual ow rate. NOTE: We recommend that
you backwash a swimming pool sand lter in a residential installation at least once a month.