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16) Test the product water at this time to ensure that the system is operating properly.
17) Storage tank valve can now be opened at this time, along with any other dispensing lines.
18) The RO System is now ready for use.
IMPORTANT: To prevent costly repairs or possible water damage, housings should be replaced every 5 years. Be sure to date any
new housings for future reference and indicate the next recommended replacement date.
Changing the RO Membrane
Although changing the RO membrane is optional when replacing filter cartridges, it is important to replace filter cartridges whenever
replacing the membrane.
1) Carefully remove the membrane vessel from the plastic clips mounting it to the metal bracket.
2) Carefully un-snap the white horizontal membrane vessel from the clips mounted on the metal bracket.
3) Disconnect the tubing from the fitting on the threaded end cap of the vessel. To remove the tubing:
a.
John Guest Fitting – push the collet against the fitting and pull on the tubing at the
same time.
b. Jaco Fitting – unscrew the compression nut until tubing pulls out.
4) Remove the end cap by turning counter clockwise to loosen.
5) With needle nose pliers, grip the product water tube of the RO membrane and pull to
remove. Discard the used membrane.
6) Inspect the o-rings of the vessel for damage or crimp marks, and replace if necessary.
7) Rinse out the membrane vessel with a mild detergent and soft cloth.
NOTE: If you wish to sanitize your RO system, now is an ideal time – while the RO membrane is out. If sanitizing, turn the
end cap back onto the vessel (leaving the vessel empty at this time) and reconnect the tubing. Snap the membrane vessel
back onto the plastic clips. Now refer to the section on how to Sanitize the RO System and Storage Tank, and continue with.
8) Remove the new RO membrane from the plastic bag.
9) Lubricate the o-rings on the product water tube and the brine seal with a clean coating of food grade silicone, or water-
soluble lubricant, canola oil, or vegetable oil. DO NOT use petroleum-based lubricants, such as Vaseline.
10) Gently glide the membrane (o-ring end first) into the membrane vessel.
11) Once the membrane has been inserted into the vessel, you must take your thumb and firmly push to properly seat the
membrane. To be properly seated, the end of the product water tube must be pressed all the way against the end of the
vessel, as shown in the diagram below:
12) Turn the end cap back onto vessel (leave the vessel empty at this time) and reconnect the tubing. Snap the membrane
vessel back into the plastic clips.
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