Customer Ser
vice
Tr
oubleshooting T
ips
Operating Instr
uctions
Safety Infor
mation
15
Reverse Osmosis Cartridge Replacement
NOTE:
When replacing the Reverse Osmosis cartridge, also install a new flow
control and screen.
It’s time to replace the Reverse Osmosis cartridge when the amber “RO”
light, on the faucet base, flashes continually while Reverse Osmosis
water is taken from the faucet.
Follow steps 1 through 6 in the Prefilter Cartridge Replacement.
Slide the new Reverse Osmosis cartridge into the top of the prefilter
cartridge. Then, place the assembled cartridges into the Reverse
Osmosis housing.
Remove and replace the flow control and screen. See figure on page 9.
Lightly lubricate the cap o-ring seal with clean silicone grease. Then,
push the cap into position and install the clamp sections and retainers.
Turn on the water supply and
PURGE THE REVERSE OSMOSIS
CARTRIDGE.
See the
Purging the Reverse Osmosis system
section.
CAUTION:
The Reverse Osmosis cartridge contains a food grade
preservative that should be purged from the system before use. The
preservative will give product water an unpleasant taste and odor. After
the tank has filled (takes about four hours), open the system faucet until the
bladder is empty. After about four of these drainings, the system is ready
to make product water for your use
.
5
4
3
2
1
Flow Control and Screen for the Reverse Osmosis Cartridge
The flow control is vital for proper operation of the Reverse Osmosis
cartridge. The control keeps water flow through the cartridge at the
proper rate to obtain the best quality product water.
When servicing the Reverse Osmosis, it’s good practice to check the flow
control (and tubing to it) to make sure the small tube and surrounding
surfaces are clean and unrestricted. A small, cone-shaped screen is located
in front of the flow control to help keep it clean. If the flow control should
plug with foreign particles, the Reverse Osmosis cartridge cannot discharge
minerals and impurities to the drain. If this should happen, it will only take
a short time for the cartridge to plug, making it useless.
CAUTION:
To replace the screen, place the cone end into the
Reverse Osmosis cap. Then, carefully push it in using 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 tubing nut by hand, then
another 1/4 to 1/2 turn with pliers.
DO NOT OVERTIGHTEN AND DISTORT
OR CRUSH THE TUBING AND FLOW CONTROL.
