1 - 2 YEAR RO MEMBRANE CHANGE/
CARTRIDGE CHANGE/SYSTEM DISINFECTION
NOTICE:
The quality of the supply water feeding the RO system will
directly affect RO membrane life and Pre-filter Cartridge life.
A. Remove Pre-filter Cartridges and RO Membrane.
1. Follow Steps 1 through 6, under “Pre-filter Cartridge
Change”, Page 4.
2. Unscrew the RO membrane housing cap and pull the RO
membrane out with pliers. Be sure you don’t touch the mem-
brane with your bare hands. Be careful – the membrane
housing is full of water. Leave the post filter in place for now.
3. Clean the Pre-filter tanks and O-Rings in warm (no soap)
water. Rinse them thoroughly.
4. Re-lubricate the O-Rings with vegetable oil and seat them in
the tanks.
B. Fill RO Membrane Housing and Pre-filter Tanks.
1. Run water into pre-filter Tank 1 until it is half-full. Add 1/2
teaspoon of standard chlorine bleach (unscented). Depress
blue air-bleed buttons on top of tanks to allow air to escape
and tanks to fill.
2. Re-install (without cartridges) both pre-filter tanks. Firmly
hand-tighten them.
3. Screw the RO membrane housing cap back on (without
installing the membrane) to the RO membrane housing.
Make sure you still have the RO membrane outside of the
housing before going on to the next step.
C. Soak and Flush the System.
NOTICE:
The RO membrane is chlorine sensitive and will deteri-
orate if exposed to chlorine. Make sure that all chlorine has been
flushed out of the membrane housing and pre-filter tanks before
reinstalling the RO membrane.
1. Turn the cold water supply on.
2. Open the storage tank valve to disinfect the tank.
3. Bleed the air from the system by opening the RO faucet until
water comes out of it. Immediately shut off the RO faucet.
4. Let the system stand for 10 minutes.
5. Open the RO faucet and flush the system for 10 minutes.
6. Turn off the water supply and open the RO faucet until the
system pressure has been released. Close the RO faucet.
D. Replace the Filters.
1. Remove both Pre-filter tanks and empty the water out of
them.
2. Follow Steps 7 through 9 under “Pre-Filter Cartridge Change
(TO1 and CB1)”, Page 4.
3. Follow Steps 1 through 4 under “Post Filter Removal and
Installation”, Page 4.
4. Carefully pull the RO membrane housing out of its
brackets.
5. Place a bucket under the membrane housing. Unscrew the
membrane housing cap and dump all the water into the
bucket.
E. Re-install the RO Membrane.
1. Follow Steps 1 through 5 under “RO Membrane Installation”,
Pages 3 and 4. Before replacing the membrane housing Cap,
re-lubricate the O-Ring with vegetable oil.
2. Unscrew the compression nut holding the black tube onto
the membrane housing.
3. Gently remove the tube from the membrane housing port;
keep the nut on the tube.
4. Remove and discard the flow restrictor from the end of the
black tube (see Figure 10).
5. Install the new flow restrictor in the end of the tubing as
shown in Figure 10. Make sure that the collar on the flow
restrictor seats against the end of the tube.
NOTICE:
Do not cut the flow restrictor.
6. Insert the black tube approximately 3/8” into the port on the
membrane housing and screw on the compression nut until it
is firmly hand tight.
7. Snap the new Post filter into its brackets on the RO mem-
brane housing (large end toward the membrane housing
cap).
F.
Flush the System Before Using.
1. Put the RO unit back under the sink. Open the faucet and the
saddle valve. Flush the system to waste for one hour. Fill and
dump the storage tank to waste twice.
2. Charge the system for at least 6 hours. Periodically check for
leaks.
3. Open the RO faucet and let the water run until the air and
carbon fines are out of the system. Close the faucet.
4. Charge the system for a minimum of another 6 hours.
Your system is now ready for use.
NOTICE:
For units equipped with Total Dissolved Solids (TDS) moni-
tor: The TDS monitor is designed to detect the presence of TDS
only.
Do not
rely on the TDS monitor to warn of the presence of
bacterial or other organic substances in the system.
The TDS monitor checks the conductivity of filtered drinking water
each time the RO faucet is used. It displays a green light on the LED
in the faucet if the TDS level of the water is below the set point,
and an amber light if the TDS level is above the set point.
This RO unit must be used only on the cold water line.
RO units work best at a neutral pH (7.0).
Pressure limits: Minimum 40 psi, Maximum 100 psi.
Temperature limits: Minimum 40° F (4° C), Maximum 100° F (38° C).
Sanitize the system at every membrane change (when replacing all
filter cartridges). This should be done every 2 years or whenever
daily water production is greatly reduced. The condition of the sup-
ply water to your unit will directly affect membrane life.
Most newer sinks have a 1-3/8” or 1-1/2” hole through the sink
top. If your sink does not have such a hole, or if it is already in use,
the installer must drill (or punch) a 1-1/8” hole in the sink top
before installing the RO unit.
5
3638 0100
Flow
Restrictor
Waste Water
Tube
Figure 10: Flow Restrictor
IN
OUT
From Membrane
(Product Water)
From Pre-Filter
(Supply Water)
To Tee/Post Filter
(Product Water)
To Membrane
(Supply Water)
3640 0100
Figure 11: Flow Controller Tubing Connections. Please See
Exploded View, Page 6.
