From the Blog
How to Replace the Membrane in a Water Saver 75 Reverse Osmosis System
The Water Saver 75 High Efficiency Reverse Osmosis Drinking Water System is super easy to maintain and with a little guidance you can change the membrane yourself. When installing a new GRO membrane element and flow control, it is recommended that you replace the prefilter and post-filter cartridges as well.
Check out the video here about changing the filters.
To replace the Membrane:
When used under operating conditions specified on page 1 of the manual, your reverse osmosis membrane should last at least one year. You should replace the membrane after 18 to 24 months. Replace it sooner if you notice a return of unpleasant tastes or odors or a noticeable decline in water production. The precise life span of your system's membrane will depend on the quality of the water entering the system and the frequency with which you use it. Frequent system use prevents the filtered salts and minerals from building up on the membrane as scale. The more water the system is required to produce, the longer the membrane will last. You may wish to find a variety of uses for your system in order to prolong the life of the membrane. NOTE: If system stands for more than 2 to 3 days without being used, the storage tank should be emptied and the system allowed to refill.
1. Turn off incoming water supply and valve on the storage tank and follow the filter replacement procedure as outlined in this video until you are ready to turn the water back on.
2. Disconnect the tubing connections from the GRO element. Install the new GRO element, permeate check valve, and capillary reject flow controller.
3. Turn on cold water supply. Check for leaks, open faucet and run water until tank empties. Continue to check periodically to make sure no leaks develop.
4. Membrane has a preservative in it which needs to be flushed after installation. Allow system to run for 3 hours to fill tank and then empty tank and repeat. Check for leaks every hour. As pressure builds in tank, leaks may occur that did not exist directly after installation.
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Check out our Reverse Osmosis Video Playlist here https://www.youtube.com/watch?v=e7FancDTZbs&list=PLmnBltD77jBXzcRCOY_jjb_lX-X4DbWpG