Kenmore 625.347001 Owner's Manual page 14

-- CARE OF YOUR REVERSE OSMOSIS SYSTEM --
1. AT LEAST every 6 months, replace the prefilter and postfilter cartridges. Clean or replace the flow control and
screen.
2. Replace the RO membrane cartridge when the percent rejection of total dissolved solids (TDS) is less than shown
in the specifications (see B, below).
A. Slow Making of Product Water: Replace the prefilter cartridge.
If the production rate does not improve, replace the postfilter car-
tridge and RO membrane cartridge.
B. High Total Dissolved Solids (TDS) in Product Water: You can
get a free TDS test through some Sears retail stores or service
departments. If the store or service department does not have a
TDS meter, you can send treated and untreated water samples to
a water analysis lab for testing. It is important to test both the
treated and untreated water to determine system performance. If
the TDS is not within the system' s performance guidelines,
replace the prefilter, postfilter and RO membrane cartridges.
PROBLEM CAUSE
Chlorine taste and/or
The ppm of chlorine in your water supply
odor in the RO product
exceeds maximum limits, and has de-
water stroyed the RO membrane.
The prefilter is no longer removing chlo-
rine from the water supply.
Other taste and/or odor
Postfilter expended.
RO membrane cartridge expended.
Contamination in product water storage. Use sanitizing procedures. Replace the postfilter cartridge.
System makes product Water supply to the RO system not within
water too slowly specifications.
Prefilter or RO membrane cartridges
plugged with sediments.
System makes lower Storage tank air-charge less than 5 --- 7
amount of product water psi.
than usual
High total dissolved sol- Water supply to the RO system not within
ids (TDS) in product wa- specifications.
ter
RO membrane cartridge expended.
Water leaking from fau- Drain side of faucet airgap (3/8"tubing)
cet airgap hole plugged, restricted, or incorrectly con-
nected to drain point.
Continual water flow to Check valve or automatic shutoff assem-
drain bly plugged, restricted or parts worn
Note: Sanitizing is recommended after servicing inner parts of the system(see page 9).
REVERSE OSMOSIS SYSTEM CARE GUIDE
MODEL NO. 625.347001
If any of the following occur before the 6 months, replace as directed.
OTHER TROUBLESHOOTING
C. Chlorine Taste and/or Odor: Replace the prefilter, postfilter and
RO membrane cartridges.
CORRECTION
If the water supply contains more than 2.0 ppm of chlorine, addi-
tional filtering of the water supply to the RO is needed. Correct
this condition before doing maintenance on the RO system.
Replace the prefilter, postfilter and RO membrane cartridges,
flow control, and screen.
Replace the postfilter cartridge. If taste and odor persists, re-
place the prefilter cartridge, RO membrane cartridge, flow con- place the prefilter cartridge, RO membrane cartridge, flow con-
trol, and screen.
Increase water pressure, precondition the water, etc., as needed
to conform before doing maintenance on the RO system.
Replace the prefilter cartridge. If rate does not increase, replace
the postfilter cartridge, RO membrane cartridge, flow control,
and screen.
Open RO faucet and drain tank until flow slows to a drip. Keep
faucet open and check tank pressure. If low, pressurize to 6 psi.
Close faucet to refill the tank.
Increase water pressure, precondition the water, etc., as needed
to conform before doing maintenance on the RO system.
Replace the prefilter, postfilter and RO membrane cartridges,
flow control, and screen.
Inspect and eliminate restriction or plug. Refer to installation
instructions for proper drain connection.
Clean, repair or replace as needed.
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