Storage/Winterizing - Pentair Pool Products HIGH-RATE SAND FILTER SYSTEM Owner's Manual

STORAGE/
WINTERIZING
Pool chemicals may give off corrosive
fumes. Store chemicals away from system in a well
ventilated area.
NOTICE: Allowing water to freeze will damage filter and
void warranty. If antifreeze is needed, use propylene gly-
col; it's plastic compatible and non-toxic. Follow manufac-
turers instructions. Do not use ethylene glycol based
anti -freeze – it's toxic and it may damage plastic compo-
nents.
Figure 10: Valve settings to lower pool water level.
Stop pump before changing valve position.
Figure 11: Valve setting for winter storage.
Stop pump before changing valve position.
1. Open all system valves. Set multiport valve at 'WIN-
TERIZE' to allow air passage to all ports (Figure 11).
2. Remove drain plug from filter.
3. Drain filter tank completely and replace drain cap
(Figure 12).
4. Cover with plastic or tarpaulin to protect from
weather.
5. Remove drain plugs from pump.
6. Protect from freezing.
Startup for Winterized Equipment:
1. Remove any temporary weather protection placed
around system for shutdown.
2. See "Startup", Page 8, for reactivation of the filter.
3. Inspect all electrical wiring to pump for damage or
deterioration over the shutdown period. Have a qual-
ified serviceman repair/replace wiring as needed.
Inspect and tighten all watertight connections.
4. Open all valves in suction and return piping.
5. Remove any winterizing plugs in system.
6. Drain all winterizing chemicals (if used) from system;
flush system.
7. Close all drain valves and replace all drain plugs in
system.
8. Fill pool with water to proper level (see pool maufac-
turer's instructions).
Drain Fitting Installation/Removal
NOTICE: If pool is above height of filter, first close
valves in pump suction and return lines to prevent
draining pool. If there are no shutoff valves installed,
disconnect suction and return lines and raise ends
above pool water level.
1. Installation: See Figure 12.
2. To Drain Filter:
A. Remove drain cap. Lateral tube should remain in
place inside drain opening to prevent sand from
draining out.
B. Open union coupling on backwash port of Multi-
Port valve. This will allow air into filter and allow
water to drain from filter tank.
C. Replace cap when tank is empty.
3. Removing Sand From Filter:
A. Remove both drain cap and slotted lateral tube
(see Figure 12). Sand and water will drain from
tank.
B. To completely flush filter tank of sand,
remove top clamp and multiport valve and flush
the inside of the tank with a hose.
C. Thoroughly clean sand from all parts and from
tank drain opening before reassembling drain fit-
ting.
Small
O-Ring
Open end
of lateral
End of lateral is
flush with end of
drain fitting
Figure 12: Drain Fitting Assembly. This assem-
bly allows water to drain without losing the
sand out of the filter tank.
Make sure all surfaces are clean and free of
sand. Don't cross thread cap; don't overtighten
cap.
10
About 1"
Seat small
O-Ring
Large
O-Ring
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