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Rinse well. 5 6 Remove cap from RO cartridge housing (unscrew tubing first, on some models). Use pliers to remove the RO cartridge. Place in a clean plastic bag or discard if replacing. Thoroughly wipe inside of housing and cap with a paper towel or dish brush moistened with dish soap. Rinse well. 7 Replace empty postfilter sump. 8 Fill prefilter sump with water to within 1. of O-ring. Add 2 oz. (4 Tbsp.) ordinary household bleach. Replace prefilter sump. 9 Turn on water supply. Open RO faucet until water begins to flow, then close. Allow system to fill for 1 minute. 10 Open faucet and allow water to flow for 10 minutes. Close faucet for one minute more, then open and allow water to flow for another 10 minutes, or until bleach odor is gone. Turn off water supply again. Drain RO. 11 Remove sumps. Insert filters. Lubricate o-ring with food-grade silicone grease, if necessary. (Do not use petroleum jelly). Tighten sumps securely. 11 Installation Instructions PREFILTER, POSTFILTER AND RO CARTRIDGE REPLACEMENT PROC., INCLUDING SANITIZATION (cont.) Remove cap from RO cartridge housing. Install RO cartridge, O-ring end first. Lubricate cover O-ring with food-grade silicone grease, if necessary. (DO NOT use petroleum jelly). Tighten cap securely. 12 Change the batteries in the filter change indicator: • Use a small, flat blade screwdriver or coin and carefully open the battery compartment. • Install the CR2032 battery (+) side down into the tray. • Slide the tray into the base and snap-lock into place. • The light will flash 5 times to indicate proper installation. After 6 months of use, the light will flash again, indicating the proper time to replace the filter. Install a new CR2032 battery after 6 months of use. 15 If you only replaced the prefilter and postfilter, allow faucet to run 5 minutes to remove harmless carbon particles. If you replaced the RO cartridge, fill and empty the storage tank three times, until taste and odor from food grade membrane preservative is gone. 16 Once storage tank is full, turn on icemaker. 17 Turn on water supply. Allow to fill. (May take up to four hours). Check for leaks. 14 If you replaced the RO cartridge, also replace the flow control and screen. (Unscrew the black 1/4. line from the fitting. Remove flow control with clean knife edge. Remove screen with a clean toothpick). Tighten the nut hand-tight and then tighten 1/4 turn with pliers. DO NOT OVERTIGHTEN. 13 Flow control Screen Compression nut 1/4. Black tubing 12 Care and cleaning of the reverse osmosis system. To obtain replacement filters, call toll-free GE Appliance Parts at 800.626.2002 (U.S.), 800.663.6060 (Canada–English), 800.361.3869 (Canada–French), or visit the store where you purchased your reverse osmosis system. Prefilter/Postfilter Cartridge Replacement FX12P Carbon Block Reverse Osmosis Cartridge Replacement FX12M Thin Film Polyamide CAUTION: Before servicing the Reverse Osmosis system, close the water supply/saddle valve and open the RO water faucet. Allow the system to drain. The Water Test Kit To obtain an independent laboratory water test kit, please call Legend Technical Services at 1.800.826.8553 ext. 47 and leave your contact details. They will contact you to find out what water tests you are interested in, and inform you of the cost of the testing. You will then receive a kit that will include all necessary tests to properly indicate the performance level of your system. Product water should be tested a minimum of every six months. 13 Consumer SupportTroubleshooting Instructions Installation About the reverse osmosis system. Troubleshooting TipsConsumer Support Troubleshooting Tips Installation Instructions Safety InstructionsOperating Instructions What the Reverse Osmosis System Does Reverse Osmosis removes Total Dissolved Solids (TDS) and organic matter from water by diffusing it through a special membrane. The membrane separates minerals and impurities from the water and they are flushed to the drain. High quality product water goes directly to the drinking water faucet or to the storage tank. The system makes a good supply of drinking water each day; see Specification Guidelines. How much it makes depends on the feed water supply pressure, temperature and quality. The carbon prefilter and postfilter are replaceable cartridges. The prefilter removes chlorine while also filtering sediments. The postfilter removes any other undesirable tastes and odors before you use the water. Description of the Reverse Osmosis System Prefilter—Water from the cold supply pipe is directed to the prefilter cartridge, which is inside the sump. The prefilter is a replaceable sediment cartridge containing activated carbon. The cartridge removes sand, silt, dirt, other sediments and up to 2.0 ppm of chlorine from the feed water. The prefilter reduces chlorine in the feed water because CHLORINE DESTROYS THE REVERSE OSMOSIS MEMBRANE. Filtered, clean, chlorine- reduced water flows from the prefilter to...