II. Operation & Maintenance Instructions
A.IMPORTANT WATER QUALITY ASSURANCE REQUIREMENTS
Reverse Osmosis drinking water appliances contain treatment components that are critical for the effective reduction of Total Dissolved Solids (TDS) as well as inorganic chemical contaminants. Water Factory Systems® strongly recommends that the user test the water periodically (every six months minimum) to verify that the appliance is performing satisfactorily. Some models have a Percent Rejection (PR) Water Quality Monitor to provide the user with a means to test the water at any time. If a PR Monitor is not used, your dealer will offer a
•Sediment, Carbon, or Sediment/Carbon Prefilters, and Carbon Postfilters: Change every six months to one year depending on the feed water quality.
•RO Membrane: Change it as required based on a
B. REPLACING THE FILTER CARTRIDGES
The life of the prefilter cartridge generally depends on the local water conditions (i.e., dirt, rust and/or chlorine lev- els) while the life of the postfilter cartridge(s) is generally determined by the length of service.
When to Replace the Sediment or Sediment/Carbon Prefilter Cartridge(s)
•Every six months to one year, based upon your dealer's recommendation and knowledge of the local water conditions.
•A noticeable decrease in water production is an indication that the prefilter requires changing.
•Generally, private wells require more frequent sediment prefilter changes while softened feed water usually requires only yearly replacement.
•Recommended maximum sediment or sediment/carbon prefilter service life is one year.
When to Replace the Carbon Prefilter Cartridge (SQC 4) The carbon prefilter removes free chlorine from the feed
water supply to protect the TFCM membrane from chlorine attack. To find out the chlorine level in a water supply, call the public water supplier.
•With free chlorine levels up to 1 mg/L, the carbon prefilter should be changed every year.
•With free chlorine levels exceeding 1 mg/L, the carbon prefilter should be changed every six months.
When to Replace the Carbon Postfilter Cartridge
•If the filter is being used to control tastes and odors, replace it every year.
•If the filter is being used to reduce chloramines, change it every six months. For critical applications such as aquariums, base the filter change on periodic chloramine (combined chlorine) tests.
•If the filter is being used to meet standards for a regulated organic chemical contaminant, then cartridge replacement should be based on a monitoring program established with a public health agency.
How to Replace the Prefilter and
Postfilter Cartridges
1)Lift up on the faucet handle to drain the tank. Close the feed water tapping valve. Wait five (5) minutes for the purification assembly to completely depressurize.
2)Twist the filter cartridge 1/4 turn clockwise so that the ears on the cartridge are able to disengage from the head. Firmly pull the cartridge from the head. It may be necessary to twist the cartridge slightly from side to side to help free it. (See Fig. 8)
3)Remove the new filter cartridge from its sanitary sealed wrapper. (Double check to see that it is the correct replacement by comparing the labels.)
4)Using tap water, food grade silicone lubricant or glycerin, wet the
5)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.
6)Open the feed water tapping valve and carefully check for leaks.
C. REPLACING THE RO MEMBRANE CARTRIDGE
The life of the RO membrane cartridge depends on the local water conditions and proper maintenance, e.g., regular filter changes. Under typical conditions, the RO membrane life ranges from
13