3.
Loading sand media. Filter sand media is loaded through
the top opening of the filter.
NOTE: Please check to confirm all laterals are in the down position
before loading with sand. See Figure A.
Slowly pour in correct amount and grade of filter sand, as specified.
(Be sure center pipe remains centered in opening.) Sand surface
should be leveled and should come to about the middle of the filter
tank. Remove plastic cap from internal pipe.
4.
Assemble Filter control Valve to filter tank.
Make return to pool pipe connection to control valve opening
marked RETURN and complete other necessary plumbing connec-
tions, suction lines to pump, waste, etc.
Make electrical connections to pump per pump instructions.
To prevent water leakage, be sure winter drain cap is securely in
place and all pipe connections are tight.
Be sure correct amount of filter sand media is in tank and that all
connections have been made and are secure.
Depress Vari-Flo control valve handle and rotate to BACKWASH
position. (To prevent damage to control valve seal, always depress
handle before turning.)
Prime and start pump according to pump instructions (be sure all
suction and return lines are open), allowing the filter tank to fill with
water. Once water flow is steady out the waste line, run the pump
for at least 2 minutes. The initial backwashing of the filter is recom-
mended to remove any impurities of fine sand particles in the sand
media.
Loosen flange clamp and remove Filter Control Valve (if previously
installed).
Cover internal pipe with shield to prevent sand from entering it.
We recommend filling tank approximately 1/2 way with water
to provide a cushioning effect when the filter sand is poured in.
This helps protect the underdrain laterals from excessive shock. (Be
sure the winter drain cap is securely in place on drain pipe.)
a.
b.
c.
d.
Place valve flange clamp around neck of tank. Do not tighten. Wipe
filter flange clean.
Insert filter Control Valve (with valve/flange O-ring in place) into the
tank neck, taking care that the center pipe slips into the hole in the
bottom of the valve. Place clamp around valve flange and tank
flange and tighten just enough so that the valve may be rotated on
tank for final positioning.
Carefully screw pressure gauge, with pipe tape, into 1/4” tapped
hole in valve body. Do not over-tighten.
Connect pump to control valve opening marked PUMP according
to instructions. After connections are made, tighten valve flange
clamp with screwdriver, tapping around clamp with screwdriver
handle to help seat valve flange clamp.
a.
b.
c.
d.
5.
6.
7.
INITIAL START-UP OF FILTER
1.
2.
3.
Turn pump off and set valve to RINSE position. Start pump and
operate until water in sight glass is clear - about 1/2 to 1 minute.
Turn pump off and set valve to FILTER position and restart pump.
Your filter is now operating in the normal filter mode, filtering
particles from the pool water.
Adjust pool suction and return valve to achieve desired flow. Check
system and filter for water leaks and tighten connections, bolts, and
nuts, as required.
Note the initial pressure gauge reading when the filter is clean. (It
will vary from pool to pool depending upon 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 up to diminish. When the pressure gauge reading is
6-8 PSI. (0.40 - 0.55 BAR) higher than the initial “clean” pressure you
noted, it is time to backwash (clean) the filter. (see BACKWASH)
under Filter and Control Valve Functions).
NOTE: 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.
CAUTION: To prevent unnecessary strain on piping system and valving,
always shut off pump before switching Filter Control Valve Functions
positions.
To prevent damage to the pump and filter and for proper operation
of the system, clean pump strainer and skimmer baskets regularly.
FILTER AND CONTROL VALVE FUNCTIONS
FILTER
- Set valve to FILER for normal filtering. Also use regular
vacuuming.
BACKWASH
- For cleaning filter. When filter pressure gauge rises 6-8
PSI. (0.40 - 0.55 BAR) above start-up (clean pressure):
Stop the pump, set valve to BACKWASH. Start pump and backwash
until waste is clear. Approximately 2 minutes or less depending on
dirt accumulation. Proceed to RINSE.
RINSE
- After backwashing, with pump off, set valve to RINSE. Start
pump and operate for about 1/2 to 1 minute. This assures that all
dirty water from backwashing is rinsed out of the filter to waste,
preventing possible return to the pool. Stop pump, set valve to
FILTER, and start pump for normal filtering.
WASTE
- To bypass filter for draining or lowering water level and for
vacuuming heavy debris directly to waste.
RECIRCULATE
- Water is re-circulated through the pool system
bypassing the filter.
CLOSED
- Shuts off flow from pump to filter.
VACUUMING
- Vacuuming can be performed directly into the filter.
When vacuuming heavy debris loads, set valve to WASTE position
to bypass the filter and vacuum directly out to waste.
*NOTE: For new concrete or gunite pools, or where there is a large amount of plaster dust or
debris - start filter in FILTER position (not BACKWASH) to prevent clogging or underdrain
laterals.
4.
5.
6.
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