How to Change the System Components
1. Turn off the cold water supply.
2. Open the R.O. faucet and close the storage tank valve.
3. Remove the R.O. unit from the hanger and place it over a drip pan (to
prevent water spillage).
4. To replace the pre-filter, use the filter wrench (not supplied) to
unscrew the pre-filter housing from the cap (see figures 6 and 7).
Replace the pre-filter and reassemble.
To change the membrane cartridge, use the filter wrench (not
supplied) to unscrew the membrane housing from the control head
(see figures 6 and 7). Replace the membrane cartridge and
reassemble.
To replace the post-filter, use the filter wrench (not supplied) to
unscrew the post-filter housing from the cap (see figures 6 and 7).
Replace the post-filter and reassemble.
To replace both filters and the membrane cartridge, use the filter
wrench (not supplied) to unscrew all the housings from the caps.
Follow the above steps in consecutive order.
RainSoft Replacement Parts
The following RainSoft replacement parts are available through your
local RainSoft Dealer:
If you are unable to order replacement parts from your local RainSoft
Dealer, please contact RainSoft at 1-800-860-7638 for assistance.
8
FILTER WRENCH
PRE-FILTER
MEMBRANE
POST FILTER
!
Important Note: This Reverse Osmosis System
contains replaceable components critical to
the efficiency of the system. Replacement of
the Reverse Osmosis components should be
one of identical specifications, as defined by
the manufacturer, to assure the same effi-
ciency and contaminant reduction perform-
ance.
Figure 6
Figure 7
Helpful Tips: To avoid contamination, we
recommend the use of sterile gloves while
changing the system components.
When changing the membrane cart- ridge,
verify that the rubber brine seal and O-rings
are secure and in place. Always lubricate the o-
rings with a non-petroleum based lubricant to
ensure the longevity of the o-rings. Never
over-tighten the housing to the cap _ HAND
TIGHT ONLY!
Model
Pre-filter
Membrane
Cartridge
Post-filter
UF22T-CB
18557
12448
18557
UF50N-CBVOC
18557
18644
18773
!
Important Note: It is important to main-
tain the quality of your system by using
only genuine RainSoft replacement
filters and cartridges. Other “made-to-
fit” alternative filters and cartridges
claim to perform the same duties as the
original RainSoft parts, but these items
are not approved for use in your system!
“Made-to-fit” alternative filters and
cartridges will increase the probability
of leaks, putting your entire system at
risk!
When “made-to-fit” alternative filters
and cartridges are placed into your
RainSoft Reverse Osmosis System, the
product warranty will become null and
void and the system will lose the WQA
certification. To guarantee proper opera-
tion and certification of your RainSoft
Reverse Osmosis System, please use
genuine RainSoft parts.
Description
Part Number
Slim Line Spanner Wrench
13203
