Page 16
Membrane Replacement
Membranes have a life expectancy of between 2 and 5 years, depending on the incoming water
conditions and the amount of use of the RO system.
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. A water sample may be sent Watts Premier for a
free test or a TDS (total dissolved solids) monitor can be purchased from Watts Premier to test the
incoming and reverse osmosis water at home.
To send a water sample, using 2 clean containers put ½ cup of tap water in one container and ½ cup
of reverse osmosis water in 2nd clean container. Clearly mark each container. Watts Premier will
test the water and call or mail you the results.
Step 1
Step 2
Remove the membrane vessel on top of the unit by turning the
vessel counter clockwise to loosen.
Turn off the cold water supply and open the RO faucet to drain the
tank.
Annual sanitizing of unit is recommended. Turn off incoming water supply. Remove sedi-
ment & carbon filters from filter housing.
Open Membrane vessel and remove the membrane from the membrane vessel. Replace
empty membrane vessel onto the unit.
Leave filters out, replace the last two (of three) empty filter housings (hand tight) onto unit.
Measure & pour either 1/2 cup of 3% hydrogen peroxide or 2 tablespoons of common
household bleach into the 1st filter housing and hand tighten onto unit.
Turn on incoming water supply. Wait 1 minute for the unit to pressurize. Turn on the RO
faucet and let the water run for 30 seconds then turn off the RO faucet . Let the unit re-
pressurize for 2 minutes. Open RO faucet again and let the water run for 5 more minutes.
Turn off incoming water supply and make sure tank is completely drained. Refer to 6
months filter change to now install new filters. Make sure to insert RO membrane back into
the manifold vessel.
The Final Filter should be replaced annually. Remove white nuts at both ends of the filter
to replace the old final filter. Replace with new filter and connectors as shown on page 13.
The white nuts can be reused so they do not have to be removed from the tubes.
Note: Flow arrow on final filter must be pointing in the direction of the faucet
Turn on incoming water supply. Let tank fill for 2-3 hours. Check for leaks and drain tank
Annual Maintenance
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Summary of Contents for B-RO5M-50
Page 31: ...Page 31 ...
