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Step 6: Install the RO Membrane
While some models may have the RO membrane pre-installed, it's important to verify this to ensure proper system function.
1) Carefully un-snap the white horizontal membrane vessel from the clips mounted on the metal bracket.
2) 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.
3) Remove the end cap by turning counter clockwise to loosen.
4) Remove the new RO membrane from the plastic bag. Note: If included and not already installed, flow restrictor may be in
a separate bag and taped to outside of the membrane bag; set aside flow restrictor for later installation – do not discard.
5) 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.
6) Gently glide the membrane (o-ring end first) into the membrane vessel.
7) 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:
8) Turn the end cap back onto vessel and reconnect the tubing. Snap the membrane vessel back into the plastic clips.
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