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Installation Instructions
PREFILTER, POSTFILTER AND RO CARTRIDGE
REPLACEMENT PROCEDURE, INCLUDING SANITIZATION
Turn OFF the icemaker (if attached to the
RO system).
1
Wash your hands with anti-bacterial soap.
2
Turn off water supply
to RO system.
3
Remove cap from RO cartridge housing
(unscrew tubing first, on some models).
Use pliers to remove the RO cartridge. Place
in a clean plastic bag or discard if replacing.
Thoroughly wipe inside of housing and cap
with a paper towel or dish brush moistened
with dish soap. Rinse well.
6
Turn on RO faucet. Drain tank (may take
several minutes). Turn off RO faucet.
CAUTION: Failure to close the water
supply valve or tank shutoff valve will cause
water to spray or run when sumps are
removed.
4
Remove the sumps.
Be careful—sumps will be
full of water.
Discard filters. Thoroughly
wash sumps with dish soap.
Thoroughly wipe inside of
heads with a paper towel
moistened with dish soap.
Rinse well.
5
Replace empty postfilter
sump.
7
Fill prefilter sump with water to within 1″
of O-ring. Add 2 oz. (4 Tbsp.) ordinary
household bleach. Replace prefilter sump.
8
Turn on water supply. Open RO faucet until
water begins to flow, then close. Allow
system to fill for 1 minute.
9
Open faucet and allow water to flow for 10
minutes. Close faucet for one minute more,
then open and allow water to flow for
another 10 minutes, or until bleach odor is
gone. Turn off water supply again. Drain RO.
10
Remove sumps. Insert filters.
Lubricate o-ring with food-grade
silicone grease, if necessary.
(Do not use petroleum jelly).
Tighten sumps securely.
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