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- CARE OF YOUR HOME DRINKING
WATER SYSTEM -
RO MEMBRANE
CARTRIDGE
- The useful life
of the membrane
cartridge depends mostly on the
pH (see page 17) of your supply water. The lower
the pH, the longer the membrane
will last. For ex-
ample,
if the feed water has a pH of about 7.0, the
cartridge
may last for over 1 year; but if the pH is
high, cartridge
life may be shortened.
The high pH
weakens
the membrane
and makes
pin hole leaks.
NOTE:
The amber
"RO"
light on the faucet
base
will begin to flash when RO water quality
drops so
less than 75%
of the TDS are removed
from the
supply water.
This
reverse
osmosis
system
contains
a
replaceable
treatment
component
critical for
effective removal of total dissolved
solids. The
water
should
be tested
periodically
to verify
that the system
is performing
satisfactorily.
TO REPLACE
THE RO CARTRIDGE
1. Refer to page 13 and follow
instructions
under
"To
Replace
the Prefilter
Cartridge".
2. Remove
and replace the flow control and screen
(see steps
on this page).
3. Turn on the water supply
and PURGE THE RO
CARTRIDGE...
SEE PAGE
11.
BATTERIES
IN ELECTRONIC
BOX
- Always
replace
the batteries (4, "AA"
alkaline) in the elec-
tronic control box after installing a new prefilter car-
tridge and postfilter. Good batteries assure proper
operation of the indicator lights. Removing the bat-
teries also resets the 6 month or 900 gallon period
for monitoring the filter cartridges.
See FIG. 7 on
page 10.
FLOW
CONTROL
- A clean flow control
is a must
for the RO membrane
to make high quality product
water.
The flow control
keeps water flow through
the membrane
at the right rate to get the best quality
product
water.
If the control
becomes
plugged,
so
water can't get through,
it will only take a short time
for the RO membrane
to become
useless.
A small,
cone-shaped
screen is positioned
over the flow con-
trol (FIG. 9) to help keep the flow control
clean.
Every time you work on the RO system, check the
flow control and screen to make sure they are clean.
TO REPLACE FLOW CONTROL AND SCREEN
CAUTIONS:
To install the screen, place the cone
end into the RO cap. Then carefully push it in us-
ing 1/4" tubing as a tool. Do not force in farther after
you feel resistance.
Visually check to be sure it is
properly positioned.
When installing
the flow control,
tighten
the nut by
hand, then another
1/4 to 1/2 turn with a pliers. DO
NOT OVERTIGHTEN
AND DISTORT
OR CRUSH
THE TUBING
AND FLOW
CONTROL.
SERVICING
THE BLADDER
If the bladder should require inspection and replace-
ment, use the following
guides. Refer to the parts
illustration on page 18.
CAUTION:
BE SURE TO RELIEVE
PRESSURE,
STEPS
1,2 AND 3, Bo'n'OM
OF PAGE 12.
1. Remove
the vacuum
relief valve
(use 7/16"
socket).
2. Rotate the tank shutoff valve 90 o and pull from
the RO housing.
3. Apply downward
pressure on the RO cap while
rotating counterclockwise
90 o.
NOTE: If the cap turns in the RO housing, first do
steps 1 and 2 under "To Replace the Prefilter Car-
tridge",
page 13.
4. Lift the RO housing out of the liner assembly
and
PLACE
WHERE
CLEAN
AND SANITARY.
5. Remove
the bladder.
NOTE: BE SURE THE INNER SURFACE
OF THE
REPLACEMENT
BLADDER,
AND
THE
OUTER
SURFACE
OF THE RO HOUSING
ARE CLEAN.
USE DISH SOAP AND
HOT WATER
TO CLEAN
AND RINSE.
6. Install the bladder
into the liner assembly.
Wet
the top bead of the bladder
with water, or apply
a light coating
of silicone
grease.
14
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