Watts 315 - PREVENTIVE MAINTENANCE; Filter Maintenance; Membrane Maintenance; Filter and Membrane Change Procedures

PREVENTIVE MAINTENANCE
These recommendations are intended for maximize efciency of RO water production by your system.
1) Filter maintenance
a) It is OK to store lters shrink wrapped on the shelf for several years.
b) To store the sealed, unopened lter, we recommend that it be kept in an air tight container. This
prolongs the shelf life of the carbon lter and avoids having the lter absorb any possible odor from
the air.
2) Membrane maintenance
a) The dry packed membrane usually has a two-year shelf life. To prolong the shelf life, we recommend
keeping unopened dry membrane in a refrigerator.
b) Once the membrane is in use, we recommend running the RO system every day for at least 10-15
minutes (about 1 gallon or 4 liters of drinking water). This helps to maintain the membrane
performance.
c) If the RO system is not used for over a week, drain the storage tank rst. Then ll the tank and drain it
twice. Your RO system is now ready to use again.
d) This reverse osmosis system contains a replaceable component critical to the efciency of the system.
Replacement of the reverse osmosis component should be with one of identical
specications, as dened by the manufacturer, to ensure the same efciency and contaminant
reduction performance.
3) Filter and membrane change procedures:
a) Shut off the water supply.
b) Turn off the tank ball valve by turning it 90 degrees.
c) Open RO faucet to the continuous ow position to relieve pressure.
d) Slide in the housing wrench. Use one hand to hold the system and the other hand to turn the wrench
clockwise to open the housing.
e) After opening the housing, remove the used lter and put the new lter into the housing.
Make sure the o-ring is back in place and turn the housing counter-clockwise to close.
f) Repeat previous step to change second lter.
g) Turn on the water supply and make sure there are no leaks.
h) Let the water drip from the faucet for about 10 minutes. If the water ow is less than 1 cup
(8 oz. or 240 ml) per minute, it may be a signal to change the membrane.
i) Membrane change procedures:
• Unscrew the membrane housing cap.
• Slide out the used membrane and discard.
• Insert the new membrane into the housing. The end with the two o-rings should go in rst; to prevent
leaks be sure it is fully seated in the bottom of the housing.
• Screw the cap back onto the membrane housing, making sure o-ring is still in place.
• It may take 10-20 minutes for the new membrane to run at normal ow.
If the water ow is OK, then turn on the tank ball valve. After 1 minute, turn off the RO faucet and complete the
lter change procedures.
15
Note:Ifitistootighttoopenthehousingyoumaytryunpluggingthettingbetweenred
tubing and the system in order to reduce the air and water pressure inside the housing.