APEC Water Systems | O-RING-SET | User manual | APEC Water Systems O-RING-SET 3.5 in. O.D. O-Ring Set (3-Pack) for 10 in. Standard Reverse Osmosis Filter Housings Use and Care Manual

Filter Housing O-ring Replacement Instruction
The filter housing must have an O-ring in order to seal properly. Please follow steps below for
installation.
Step 1. Shut off the feed water line to the RO unit. Turn off the tank ball valve by turning the
Blue Cap on the tank ball valve 90 degrees.
Step 2.
Use the filter housing wrench to unscrew the filter
housing and remove the old O-ring with a pair
of pliers.
Step 3.
When putting in the new O-ring, make sure it is
seated correctly inside the filter housing groove.
You may also want to apply some Vaseline around
the O-ring. This will help secure the O-ring in the
filter housing groove.
Step 4.
Re-attach the filter housing to the RO head. Hand
tighten the housing, then use the filter housing
wrench and simply give an additional quarter inch
turn. Do Not over tighten the housing.
Step 5.
Open the tank ball valve and feed water line.
Check for leaks.
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