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- CARE OF YOUR REVERSE OSMOSIS SYSTEM -
REVERSE OSMOSIS SYSTEM CARE GUIDE
MODEL NO. 625.385750
1. AT LEAST every 6 months, replace the prefilter and postfilter cartridges or when yellow LED flashes.
2. Replace the RO membrane cartridge when the percent rejection of total dissolved solids (TDS) isless than shown
in the specifications (see B, below) or when red LED flashes.
3. Replace the batteries once per year.
If any of the following occur before the 6 months, replace as directed.
A. Slow Making of Product Water: Replace the prefilter cartridge. C. Chlorine Tasteand/or Odor: Replace the prefilter, post filter and
tf the production rate does not improve, replace the post filter car- RO membrane cartridges.
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, tfthe 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, post filter and RO membrane cartridges.
PROBLEM
Chlorine taste and/or
odor in the RO product
water
Other taste and/or odor
OTHER TROUBLESHOOTING
CORRECTIONCAUSE
The ppm of chlorine in your water supply
exceeds maximum limits, and has de-
stroyed the RO membrane.
The prefilter is no longer removing chlo-
rine from the water supply.
Post filter expended.
RO membrane cartridge expended.
Contamination in product water storage.
Water supply to the RO system not within
specifications.
Prefilter or RO membrane cartridges
plugged with sediments.
Storage tank air-charge less than 5 - 7
psi.
tf 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, post filter and RO membrane cartridges.
Replace the post filter cartridge. If taste and odor persists, re-
place the prefilter cartridge and RO membrane cartridge.
Use sanitizing procedures. Replace the post filter cartridge.
System makes product Increase water pressure, precondition the water, etc., as needed
water too slowly to conform before doing maintenance on the RO system.
Replace the prefilter cartridge. If rate does not increase, replace
the postfilter cartridge and RO membrane cartridge.
System makes lower Open RO faucet and drain tank until flow slows to a drip. Keep
amount of product water faucet open and check tank pressure. If low, pressurize to 6 psi.
than usual Close faucet to refill the tank.
High total dissolved sol- Water supply to the RO system not within Increase water pressure, precondition the water, etc., as needed
ids (TDS) in product wa- specifications, to conform before doing maintenance on the RO system.
ter - flashing red LED RO membrane cartridge expended. Replace the prefilter, postfilter and RO membrane cartridges,
flow control, and screen.
Water leaking from fau- Drain side of faucet airgap (3/8" tubing) Inspect and eliminate restriction or plug. Refer to installation
cet airgap hole plugged, restricted, or incorrectly con- instructions for proper drain connection.
nected to drain point.
Continual water flow to Check valve or automatic shutoff assem- Clean, repair or replace as needed.
drain bly plugged, restricted or parts worn
Faucet LED indicator Batteries dead. Replace with new batteries.
lightdoesnotfunctionaf- Batteries installed incorrectly, tnstall batteries correctly.
ter battery change
Static protection of the electronic board Remove batteries for one minute and then reinstall.
was not discharged.
Paddlewheel jammed. Repair or replace paddlewheel.
Continual water flow to Missing flow restrictor in red drain tube or Replace flow restrictor.
drain and no product wa- its corresponding port.
ter
Note: Sanitizing is recommended after servicing inner parts of the system(see page 9).
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Problems, Questions? Call 1-800-426-9345 Kenmore Water Line