PREFILTER, POSTFILTER AND RO CARTRIDGE REPLACEMENT
PROCEDURE, INCLUDING SANITIZATION
Turn OFF the icemaker (if attached to the
Wash your hands with anti-bacterial soap.
Turn off water supply
to RO system.
Turn on RO faucet. Drain tank (may take several
minutes). Turn off RO faucet.
supply valve or tank shut-off valve will cause water
to spray or run when sumps are removed.
Remove the sumps.
Be careful—sumps will be full
Discard filters. Thoroughly
wash sumps with dish soap.
Thoroughly wipe inside of heads
with a paper towel moistened
with dish soap. Rinse well.
Failure to close the water
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. Install
RO cartridge housing cap.
NOTE: Failure to
remove RO cartridge
will destroy the RO
Install empty postfilter sump.
Fill prefilter sump with water to within 1"
of O-ring. Add 2 oz. (4 Tbsp.) ordinary household
bleach. Install prefilter sump.
Turn on water supply. Open RO faucet until water
begins to flow, then close. Allow system to fill for
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.
Remove sumps. Insert filters.
Lubricate O-ring with food-grade
silicone grease, if necessary. (Do not
use petroleum jelly.) Tighten sumps