11
Membrane Replacement
(lifetime 2-5 years)
To change the membrane, follow these instructions.
1.
Shut off the feed water supply to the system by turning the saddle valve on the water supply clockwise until it
stops.
2.
Close the storage tank ball valve by turning the handle perpendicular to the valve body.
3.
Press down on the faucet handle to release pressure.
4.
Allow 3-5 minutes for pressure in the system to drop.
5.
Remove the ¼" tubing from the cap end of the membrane housing by following the instructions on page 6 of this
manual.
6.
Unscrew the membrane cap by turning it counter-clockwise until it is completely removed. Be sure that the O-ring
remains properly seated on the collar of the housing.
7.
Unpack the membrane from any protection foil.
8.
CAUTION! Use food-grade silicone grease for membrane seals before membrane installation.
9.
With a pair of pliers, gently grab the membrane plastic tube end and pull it out. This procedure may require a little
back and forth twisting and pulling motion, as the membrane is press-fitted into the housing. Be careful not to
damage the inside walls of the membrane housing.
10.
Insert the new membrane into the membrane housing and use your thumbs to apply pressure to the membrane in
the direction shown making sure the brine seal and permeate O-rings seat into the housing completely.
11.
Turn on the feed water supply to the system.
12.
Turn the RO faucet on to rinse the membrane for 20 minutes before using the water.
13.
Open storage tank ball valve.
Insert new membrane into the housing in this direction
Feed Water
Figure 13 – Regular Membrane Scheme
Filter Lifetimes:
NewLine Pre-filters – 3-6 months
NewLine Post filters – 6 months
NewLine RO membrane – 2-5 years
NOTE: Regularly (i.e. once per month) check your TDS* level of feed water and purified water. Results will keep you
updated about the filtration efficiency and the filter condition. RO membrane should lower TDS value of the feed
water by around 90%. If the TDS level of purified water is out of range the pre-filters, post filters, and/or membrane
should be replaced.
*TDS (Total Dissolved Solids) – total content of substances dissolved in water measured in ppm (parts per million = mg/L)
Purified Water