11
Membranes have a life expectancy between 2 and 5 years, depending on the incoming water
conditions and the amount the RO system is used. This reverse osmosis membrane is critical for
effective reduction of total dissolved solids (TDS). The product water should be tested periodically to
verify that the system is performing satisfactorily.
Normally, a membrane would be replaced during a semiannual or annual filter change. However, if
at any time you notice a reduction in water production or an unpleasant taste in the reverse osmosis
water, it could be time to replace the membrane. Premier recommends replacing the membrane
when TDS reduction falls below 75%.
NOTE:
A water sample may be sent to Premier for a free diagnosis of your membrane
performance.
To send a water sample, use two (2) clean containers and fill ½ cup of tap
water in one container and ½ cup of reverse osmosis water in 2nd container. Clearly label
each sample. Send the samples to the address listed on the cover of this manual attention
“Water Samples”. Premier will test the water and mail or call you with the results.
Step 1: Turn off the incoming water supply to the RO system.
Step 2: Open the RO Faucet and allow water to drain from the tank until
it is completely empty.
Step 3: Disconnect the green tube from the elbow on the end cap of the
membrane housing.
Removing the membrane:
Step 4: Remove the end cap from the membrane housing by turning it
counter clockwise to loosen.
Step 5: Using a pair of pliers, grip the PVC tube of the RO membrane
and pull firmly on the membrane to remove from the housing and
discard.
Installing the membrane:
Step 6: Lubricate the O-rings on the new membrane with a water soluble
lubricant such as KY Jelly ®. Insert the end with the two black
O-rings on the PVC tube first into the housing.
Step 7: Once membrane has been inserted into the housing you must take your thumbs and give
a firm push to properly seat the membrane. Replace membrane housing cap and tighten.
Step 8: Re-attach the green tube to the elbow fitting on the end cap of the membrane housing.
Step 9: Follow the Start Up Instructions on page 8.
Membrane Replacement
This reverse osmosis system contains a replaceable component (the RO membrane) which is criti-
cal to the efficiency of the system. Replacement of this reverse osmosis membrane should be with
one of identical specifications as defined by Premier to assure the same efficiency and contaminant
reduction performance.
TIP:
This is a good time to check the air pressure in your storage tank. For instruc-
tions please see page 17.
Step 14:
Follow Steps 8 through 10 in the Six Month System Maintenance (Page 14) for startup
directions.
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