Kenmore ULTRAFILTER 300 625.384720 manual Care Of Your Reverse Osmosis System, MODEL NOs, Problem

- CARE OF YOUR REVERSE OSMOSIS SYSTEM -

REVERSE OSMOSIS SYSTEM CARE GUIDE

MODEL NOs. 625.384720 & 625.384750

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) is less 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 WateK Replace the prefilter cartridge. lithe production rate does not improve, replace the post filter car- tridge and RO membrane cartridge.

B. High Total Diaaotved 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, post filter and RO membrane cartridges.

C. Chlorine Tasteand/orOdoK Replace the prefilter, post filter and RO membrane cartridges.

PROBLEM

OTHER TROUBLESHOOTING

CAUSECORRECTION

Chlorine taste andfor

odor in the RO product water

Other taste andfor odor

System makes product water too atowty

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.

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, 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.

Increasewaterpressure, preconditionthewater, etc.,asneeded 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 tower amount of product water than uau_t

High totat diaaotved aot- ida (!DS) in product wa-

tar - ftaahing red LED

Water teat_ing from t_u- cetairgap hote

Storage tank air-chargeless than 5 - 7 Open RO faucet and drain tank until flow slows to a drip. Keep

psi.faucet open and check tank pressure. If low, pressurize to 6 psi. Close Faucet to refill the tank.

WatersupplytotheROsystemnotwithin	Increase water pressure,		precondition	the water, e¢c.,as needed
specifications,	to conform before doing		maintenance	on the RO system.
RO membrane cartridge expended.	Replace the	prefilter, postfilter and RO membrane cartridges,
	flow control,	and screen.

Drain side of faucet airgap (3/8" tubing) Inspect and eliminate restriction or plug. Refer to installation plugged, restricted, or incorrectly con- instructions for proper drain connection.

nected to drain point.

Continuat	water ttow	to	Check valve		or automatic shutoff assam-		Clean, repair or replace as needed.
drain			bly plugged,		restricted or paris worn
Faucet	LED indicator		Batteries	dead.			Replace with new batteries.
fight does not function af-							Install batteries correctly.
tar battery change			Batteries	installed		incorrectly.
			Static protection			device was not dis-	Remove batteriesfora minimum or one hour and then reinstall.
			charged.
Continuat	water tlow	to	Missingflowrestrictorinreddraintubeor				Replaceflowrestrictor.
dr_inandnoproductwa-			its corresponding			port.
tar

Note_: Sanitizing is recommended after ser_4cing im_e_ parts of the system(see page 9).

Problems, Questions? Call 1-800-426-9345 Kenmore Water Line