Collection: Installation Instructions In-Line Filter


This unit is designed for refrigerators with automatic icemakers and/or water-through-the-door devices, plumbed coffee makers, or water coolers with ¼" O.D. tubing. It may be installed on either plastic or copper lines. The filter’s fittings are a special high-pressure quick-connect type. To connect, simply push the tubing into the fitting until it is completely bottomed. To disconnect, push down (towards filter) on the outer ring while pulling out on the tubing.

First, shut off the water supply. Cut a section of the tubing, enough to accommodate the filter. If your line has some flexibility, one cut may be enough. On copper tubing, be sure to remove any burrs. Attach the tubing to the inlet side. Slowly turn on the water supply, running the water into a bucket. This will flush the carbon fines from the filter. Shut off the water again and attach the outlet side. Turn on the water and check for leaks.



After an extended period of inactivity, allow water to run through the filter for several minutes before drinking. Otherwise, the. taste may be bitter due to excess zinc oxide (which prevents bacterial growth and is harmless to drink).

2. Recommended flow rate is one gallon per minute or less. Operating at higher flow rates will not necessarily damage the unit, but will reduce the contaminant removal efficiency. Flow rate can be adjusted with the water shut-off valve.

3. If your water connection uses a saddle valve and your water pressure does not provide acceptable flow, a special high-flow t-valve can be purchased from your dealer, or from Crystal Clear 

4. Maximum water pressure is 100 PSI. Maximum operating temperature is 110

° F. Protect from freezing.


In virtually all cases, the taste and odor of chlorine will return to municipal water when the cartridge has lost its effectiveness. The enclosed test strips (3) can be used to confirm the presence of chlorine. Dip the test strip into the water sample with a constant gentle back and forth motion for 10 seconds. Immediately note the color change: the pad on the end will turn blue with the presence of free chlorine, the pad nearest the handle will turn green with the presence of total chlorine (chloramines). IMPORTANT: Assess the color within 10 seconds after dipping the strip - the pads become unstable after that and will give a false reading. Additional test strips are available from Crystal Clear (3 for $1.75). While our filter has been tested to effectively remove chlorine from over 8,000 gallon of water, the type and concentration of other contaminants varies widely throughout the country. Therefore, to assure maximum effectiveness and the best possible water quality, it is suggested that the filter be replaced at least every three years. You may purchase the replacement cylinder only (part no. IL-E) and unscrew and reuse the quick-connect fittings, or purchase a completely new unit with new fittings (IL)


Two years prorated at $1.60 per month of usage.

This warranty does not cover damage due to abuse, neglect, freezing, fire or other fortuitous event. No allowance is made for the consequential damage, labor or expense incurred as a result of a proven defect.

Our units are not warranted against sediment clogging. If you use a private well, or are in an area where there is a high level of sediment, silt, sand, rust, or other undissolved solids, a sediment prefilter screen (available from Crystal Clear) is available. Order part number SS-3. If the flow rate is significantly reduced, clogging is most likely the cause. You can try to back-flush the unit by reversing the fittings on the housing to temporarily reverse the water flow.

RETURN PROCEDURE - Units returned under warranty must be shipped POSTPAID to Crystal Clear Supply call for details. A photocopy of your sales receipt MUST be enclosed with the unit.  A new unit will then be sent.


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