9
-- STEP 6: SANITIZING, PRESSURE TESTING & PURGING --
SANITIZING
Sanitizing is recommended upon installation of the
RO system, and after servicing inner parts. It is im-
portant for the service person to have clean hands
while handling inner parts of the system.
CAUTION: Be sure to remove the RO membrane
andboth filtercartridges asfollows,beforesanitiz-
ing. Chlorine will destroy the RO membrane car-
tridge.
1. Be sure the water supply to the RO is turned off,
and the RO faucet is open to relieve pressure.
2. Referring to FIG. 9, page 11, press inward while
turningtheROcaptotheleft(?)toremovefromthe
bracket/membrane housing. Remove (use pliers)
the RO cartridge from the housing. Place the car-
tridge in a clean plastic bag.
3.Besuretheo-ringsealis intheROcap.Replacethe
RO cap and push inward while turning to the right
(?) to lock.
4. Remove the postfilter sump, turning to the left.
Take the cartridge from the sump and place in the
plastic bag. Replace the sump and tighten securely.
5. Remove the prefilter sump and cartridge. Also
place this cartridge in the clean bag.
6. If needed to clean, flush the prefilter sump with
freshwater.Then,fillwithwatertoabout1”fromthe
top. Add 1.0 ounce of chlorine (ordinary 5.25%
householdbleach...Hilex,Clorox,etc.)andmixinthe
water. Do not add chlorine first. Concentrated, it
will attack plastics.
7. Carefully replace the sump on the prefilter head
and tighten securely.
8. Slowly open the water supply to the RO.
9. Open the RO faucet, locking the lever upward,
against the spout.
10. Allow water to circulate through the RO system
untilyou smellthebleachodor.Thenclosethefaucet
and allow the RO to stand idle for 20 minutes.
11.Afterthe20minutes,openthe ROfaucet andrun
water until the bleach odor is gone.
12. Turn off the water supply to the RO.
13. Be sure your hands are clean. Then, repeat steps
1 - 5 and 7, only replace all cartridges.
Important: Refer to FIG. 9, page 11, and to page 12
when replacing cartridges. The prefilter (left side)
cartridge has lightgray coloring, and thepostfilter
(right side) has blue coloring.
PRESSURE TESTING
1. Do the preceding sanitizing procedures before
pressure testing.
2. Open the water supply shutoff valve to the RO.
3. Open the main water supply valve and several
house faucets to purge air from the system. Close
faucets when water runs smooth.
4. In about 2 hours, pressure will start to build in the
ROsystem.Then,carefullycheckallfittingsandcon-
nections for water leaks. Correct leaks if any are
found.
Note: When the system is first pressurized, water
may‘‘spurt’’fromthefaucetairgapholeuntilairis
expelled from the RO system.
PURGING RO MEMBRANE
Important purging instructions: The RO cartridge
contains a food grade preservative that you should
cleanfromitbeforeusingwaterfromthesystem.The
preservative will give product water an unpleasant
taste and odor.
1. Allow the storage tank to fill for about 4 hours.
Then,opentheROfaucetuntilthetankisemptyand
flow stops.
2.ClosetheROfaucetandallowthetanktofillagain
for 4 hours. Then, open the RO faucet and empty
again.
Repeatsteps1and2topurgethestorage tank 4 times.Then, theRO system is ready to
make product water for use.
(16 pages)
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