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Kenmore 625.38575 Owner's Manual page 13

Reverse osmosis drinking water system
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- 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
pin-hole
leaks.
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
10):
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
o-ring
seals.
Note: Sanitizing
is recommended
after
servicing
in-
ner parts
of the system
(see page
9).
4. Insert
new
RO cartridges
with
o-ring
seals
to-
wards
the top, and with
lubricated
o-ring
in place,
turn
to the right to reattach
the sump.
S. Remove
and replace
batteries
to reset counter
and
timer.
(monitor
models).
6. Pu_ige the RO membrane
cartridge following
instruc-
tions on page 9.
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.
o-ring sen
col-
let
/
drain port
flow (control)
insert
1/4" tubing
TO
DRAIN
Figure
11
13
Problems,
Questions?
Call 1-800-426-9345
Kenmore
Water
Line

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