Original cartridge may have shorter than normal life due to disturbing pipes on installation.1. Close gate vlave on inlet and open a faucet nearest the filter to relieve pressure in filter. Close outlet valve.2. Insert wrench into hole provided in ring nut and unscrew to remove nut.3. Remove housing and cartridge and empty water.4. Lubricate gasket with silicone based lubricant.5. Place new Aqua-Pure® cartridge* on seal plate in housing. Bring ring nut over housing and hand tighten to head.6. Open both gate valves and faucet until water appears, then close faucet.7. If filter should leak, tighten ring nut with wrench until leak stops. DO NOT OVERTIGHTEN.* Double cartridge filters have cartridge slipped over centering post.REPLACEMENT PARTS10 Year Limited WarrantyCUNO Incorporated warrants this Product (excluding disposable filter cartridge(s)) to be free from defects in materialand workmanship for ten (10) years from the date of purchase. The disposable filter cartridge is warranted from defectsin material and workmanship for a period of one year from the date of purchase. This warranty does not cover failuresresulting from abuse, misuse, alteration or damage not caused by CUNO or failure to follow installation and use instruc-tions. If the Product is defective CUNO will replace the Product or refund your Product purchase price. CUNO will not beliable for any indirect, special, incidental, or consequential damages arising from the use of this Product. Some states donot allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you.To obtain warranty service, mail your request to Warranty Claims, CUNO Incorporated, 400 Research Parkway, Meriden,CT 06450. Proof of purchase (original sales receipt) must accompany the warranty claim, along with a complete descrip-tion of the Product, model number and alleged defect. This warranty gives you specific legal rights and you may haveother rights which vary from state to state, or country to country.LIMITED WARRANTYFILTER CARTRIDGE REPLACEMENT INSTRUCTIONSCAUTIONTo reduce the risk associated with property damage due to water leakage:• The disposable fi lter cartridge MUST be replaced ever 6 months, at the rated capacity or if a noticeable reduction infl ow rate occurs.IMPORTANT NOTES• Allow a minimum of 2” (5.1 cm) clear space under filter to facilitate cartridge change.ABCDEHF GCentering Guide - 6357102CWrench - 6356201CMounting Bracket - 3558101CHead 3/4” NPT - 6445331CHead 1” NPT - 6698102CHead Gasket - 3473713CRing Nut - 6448631CTaste/Odor Cartridge - AP117 (For coldwater use only)Sediment/Rust Cartridge - AP110, AP124Housing for 1 High Units - 6362604CHousing for 2 High Units - 6446202CReplacement cartridges and parts are availablethrough your local Aqua-Pure® dealer.ABCDEFGH