GE PNRV18ZCC01 Care and cleaning-RO cartridge replacement, Instructions Operating Instructions

Care and cleaning–RO cartridge replacement.	www.GEAppliances.com
Reverse Osmosis Cartridge Replacement

Safety

NOTE: When replacing the Reverse Osmosis cartridge, also install a new flow control and screen.

It’s time to replace the Reverse Osmosis cartridge when the amber “RO” light on the faucet base flashes continually while Reverse Osmosis water is taken from the faucet.

1 Follow steps 1 through 5 in the Remove the Filters section.

2 Place the prefilter cartridge back in the Reverse Osmosis housing. Note “THIS END UP” on one end. Then slide the new Reverse Osmosis cartridge into the prefilter end with 2 o-rings first. Also note “up” arrow on side. See Replace the Filter section, step 1 for diagram.

3 Remove and replace the flow control and screen. See the Flow Control and Screen section below.

4 Lightly lubricate the cap o-ring seal with only clean silicone grease. Then, push the cap into position and install the clamp sections and retainers.

5 Turn on the water supply valve and

PURGE THE REVERSE OSMOSIS CARTRIDGE. See the Purging the Reverse Osmosis System section on page 5.

CAUTION: The Reverse Osmosis cartridge contains a food grade preservative that should be purged from the system before first use or whenever the Reverse Osmosis cartridge is replaced. The preservative will give product water an unpleasant taste and odor.

Instructions Operating Instructions

Reverse Osmosis cap

Cone screen

Flow Control and Screen

The flow control regulates the flow of water Flow control through the Reverse Osmosis cartridge at the

required rate so high quality product water is produced.

When servicing the Reverse Osmosis system, check the flow control and tubing to it, to make sure the tube and surrounding surfaces are clean and unrestricted. A small, cone-shaped screen is located in front of the flow control to help keep it clean. If the flow control or screen is plugged with foreign particles, the Reverse Osmosis cartridge cannot discharge minerals and impurities to the drain. If this happens, it will only take a short time for the cartridge to plug, making it useless.

1 Make sure the red tank shutoff valve is closed, water supply valve is closed (turn clockwise), and the RO water faucet is open to the system. Drain system until water stops flowing.

2 Locate the flow control and screen. Remove the straight tubing from the top of the Reverse Osmosis system.

3 Remove the flow control from the end of the tubing with a clean knife edge. Remove the screen; a toothpick may be needed for the interior portion of the cap.

4 If you are replacing the flow control and screen, discard them. If you are checking the flow control, screen and tubing for blockage, clean these parts of any debris. Do not blow through the flow control. It will contaminate the part.

5 Replace the screen by placing the cone end into the cap and carefully push it in.

CAUTION: Do not force in further after you feel resistance. Visually check to be sure it is properly positioned.

6 Install the flow control and tighten by hand, then another 1/4 turn with pliers.

DO NOT OVERTIGHTEN AND DISTORT OR CRUSH THE TUBING AND FLOW CONTROL.

7 If you are replacing the Reverse Osmosis cartridge, return to the Reverse Osmosis Cartridge Replacement instructions.

Otherwise, open red tank shutoff valve and water supply valve (turn counterclockwise). Close the RO water faucet.

Care and Cleaning Troubleshooting Tips Consumer Support

9