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10
FILTER CARTRIDGE / USEFUL LIFE / REPLACEMENT (cont.)
Note: If the sump will not tighten up to the head, you
may have the cartridge in upside down. Take the carĆ
tridge out and check for correct orientation.
TURN
SUMP
COUNTER-
CLOCKWISE
TO TIGHTEN
sump
cartridge
head
o–ring
seal
vent valve
7. Being careful not to cross-thread, turn the sump
onto the filter head and tighten securely.
8. Partially open a house faucet on the outlet side of
the filter housing. Then, slowly open the water supĆ
ply shutoff valve and allow the filter housing to fill.
While it is filling, press the filter vent valve to release
air in the filter.
9. Close the house faucet. Then, check for leaks beĆ
tween the sump and the head.
Note: Ifleaking, turn off the water supply and depresĆ
surize the filter. Then, disassemble the filter and check
the o-ring for cuts, flat spots, etc., and sealing surfaces
for foreign material. Relubricate the o-ring with siliĆ
cone grease or Vaseline and carefully press into the
groove in the sump.