Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
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Page 14
System
Maintenance
Notice:
If your RO system is connected to an icemaker or other equipment, you must turn off
the connection to the equipment before performing any maintenance.
Membrane Replacement Instructions
The membranes should be replaced every 1-2 years, depending on the water quality.
Before starting, shut off the cold water supply to the unit. Lift the handle on the faucet to drain out the storage
tank completely and allow the system to stand for 10 minutes in order to fully decompress the tank. Leave the
faucet open until the membrane change is complete.
1. Unscrew the fitting to the cap then remove the cap of each membrane housing. Use the membrane
wrench if the cap is too tight.
2. Using pliers, pull out the old membranes from the housings.
3. Remove the new membranes from their bags.
4. Insert one membrane into each housing in the same direction as the old membrane.
5. Push the membrane firmly into the housing until it seats on the far end.
6. Screw the housing caps back on, making sure the o-ring is positioned correctly.
7. Screw the fittings (with tubing) back onto the housing.
8. The system is ready. Turn on the water supply. Check for any leaks.
9. Drain the first two tanks of water before drinking.
Filter Replacement Instructions
All pre and post-filters should be replaced every 3-6 months.
Before starting, shut off cold water supply to unit. Lift the handle on the faucet to drain out the storage tank
completely and allow the system to stand for 10 minutes in order to fully decompress the tank, reserving some
of the RO water to use to rinse the filter housings. Leave the faucet open until the filter change is complete.
1. Remove pre-filters from filter housings. Use a filter wrench if the housings are too tight.
2. Discard used filters, but save o-rings for re-use.
3. Clean inside of all housings with a mild soap solution, and then rinse with RO water.
4. Lubricate the o-ring and replace in filter housing.
5. Insert the new filters into the appropriate housings and replace the housings onto the system.
6. Disconnect the post-filter by removing the fittings on either end. Replace with new post-filter and re-use
the existing fittings.
(Feed end tee is connected by a short length of tubing, remove this and use to connect to new filter.)
7. Follow the normal Start-up Procedures. (Drain the first tank of water after changing the filters before
drinking.)
Sanitizing
We recommend sanitizing the system at least once a year. This can be done while changing your filters. Shut
down the system. If you have an icemaker hook-up installed, be sure the ball valve in the line to the
refrigerator is in the closed position during this procedure. Open the faucet to drain the system, including the
tank. Remove the pre-filter cartridges and RO Membranes from the system, leaving the old post-filter cartridge
in place. Wash the internal filter housing & membrane housing areas with warm soapy water and rinse well to
remove the soap. Pour about ¼ teaspoon of Hydrogen Peroxide or household bleach into each filter housing
and replace housings on the RO system. Open the feed water valve and open the RO faucet until water flows
freely from the spout. Close the faucet and hold the solution in the system for a minimum of 10 minutes.
Drain the tank completely, close the faucet to allow tank to fill again, and then drain again. Replace filters and
membrane as indicated in the replacement instructions. The post filter should be changed after sanitizing the
system.
