When to Replace the RO Membrane Cartridge

•As determined by a built-in percent rejection (PR) monitor: The monitor is factory preset so that a green light will be displayed when the water quality is good, and a red or yellow light indicates that cartridge replacement may be necessary. If a red or yellow light is displayed, the faucet should be opened and the storage tank trained. After it has refilled, check the water quality again. If a red or yellow light is still displayed, the membrane should be replaced.

•If a PR monitor is not used, your dealer or supplier will offer a bi-annual testing service.

How to Replace the RO Membrane Cartridge

1)Close the feed water tapping valve. Lift up on the faucet handle to drain the tank. Wait five (5) minutes for the purification assembly to completely depressurize.

2)Make sure that there is some slack in the red SFC tubing connected to the fitting at the bottom of the RO membrane cartridge. Twist the cartridge 1/4 turn clockwise so that the tubing connection is accessible. (See Fig. 8)

3)Remove the red SFC tubing by depressing the small gray collet and pulling the tubing away from the fitting.

Note: It is advisable to check the end of the red SFC tubing for nicks or scratches. If any are observed, cut off 1/4" from the end of the tubing with a sharp razor knife.

4)Firmly pull the cartridge away from the head. (It may be necessary to twist the cartridge slightly from side to side.)

5)Remove the new RO membrane cartridge from its sanitary sealed wrapper. (Double check to see that it is the correct replacement by comparing the labels.) Rinse it with tap water and dry it off.

6)Remove the white plug from the fitting at the bottom of the cartridge by pushing in the small gray collet and pulling out the plug.

7)Remove the red plastic cap from the top of the cartridge.

8)Using tap water, food grade silicone lubricant or glycerin, wet the O-ring seals to make cartridge insertion easier.

9)Reconnect the red SFC reject tubing by inserting it into the fitting at the bottom of the new RO membrane cartridge as far as it will go. Line up the cartridge ears, insert the cartridge and push it into the head until it is fully seated. Twist the cartridge 1/4 turn counterclockwise to lock it into place.

10)Open the feed water tapping valve and carefully check for leaks. Carefully inspect the fitting at the bottom of the new RO membrane cartridge.

11)Follow the sanitizing procedure for the storage tank and the purification assembly outlined below.

D. SANITIZING THE RO APPLIANCE

To assure the highest quality water from your Water Factory Systems RO Drinking Water Appliance, it is important to routinely sanitize both the storage tank and the purification assembly.

IMPORTANT: These procedures are only intended to be part of a routine maintenance program only and are not designed to sanitize systems that have become highly contaminated from misuse.

Remove the red SFC tubing from

the fitting before completely

removing the RO membrane cartridge

 

2

ON

 

3

 

1

 

 

 

O

F

 

 

F

(1)Prefilter Sed/Carbon

(2)Membrane

(3)Postfilter/Carbon

Fig. 8

When to Sanitize the Storage Tank

•Upon start-up as described in the beginning of this manual.

•After any servicing or routine maintenance which involves the RO membrane cartridge, postfilter cartridge(s), storage tank, or faucet.

When to Sanitize the Purification Assembly

•After any servicing or routine maintenance which involves the prefilter cartridge or the RO membrane cartridge.

•After any extended period of non-use (over 30 days) unless the cartridges are stored inside a sealed plastic bag in the refrigerator.

How to Sanitize the Storage Tank

Sanitizing the storage tank generally requires:

•The Water Factory Tank Sanitizing Unit (P/N 50-011) or an equivalent device such as an empty filter housing with fittings and tubing.

•Common household bleach (5.25% non-scented).

•A measuring spoon or a 0-10 ml graduated cylinder.

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