- CARE OF YOUR REVERSE OSMOSIS SYSTEM -
RO MEMBRANE CARTRIDGE
The life of the RO membrane cartridge depends mostly on the pH of the supply water to the RO sys-
tem (see specifications). Cartridge life is shorter with higher pH. For example, if supply water pH is flom 6.8 to 7.7, the cartridge may last for well over one yea1: How- eve_, cartridge life may be as short as 6 months if the pH
is as high as 8.5 to 10. Higher pH weakens the cartridge
membrane and causes
It's time to replace the RO cartridge when the pro-
duction rate and/or quality of product water drops. Product water may begin to taste different or bad, in-
dicating solids and organics are passing through the
RO membrane. To be sure it is the RO cartridge, re-
place the prefilter and postfilter cartridges first.
To replace the RO cartridge (see Figure 12):
1.Turn off the water supply and open the RO faucet to relieve pressure.
2.Remove (turn to the left) the sump from the filter
head. Be careful...the sump is full of water.
3.Remove and discard the RO cartridge in a proper manner. Flush the insides of the sump with fresh wa- ter. Do not lose the large
Note: Sanitizing is recommended after servicing in- ner parts of the system (see page 11).
4. Insert new RO cartridges with
wards the top, and with lubricated
5.Remove and replace batteries to reset counter and timer. (monitor models).
6.Pu_ige the RO membrane cartridge following instruc- tions on page 11.
FLOW CONTROL
The flow control is vital for proper operation of the
RO membrane cartridge. The control keeps water
flow through the membrane at the needed rate to ob- tain the best quality product water.
Periodically check the flow control to be sure the
small hole through it is clean and unrestricted.
let
col-
/
drain port
flow (control) insert
1/4" tubing
TO
DRAIN
Figure 13
15
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