Descriptions 1.Quick installation and easy replacement: installing this filter is very easy. Just aim in the right direction. 2.Compatible Models:Compatible with Pure source3,WF3CB 3.KINDLY REMINDER: Please drain about 4 gallons of water first to maximize the efficiency of the filter. Please replace the ilter every 6 months or 200 gallons to minimize impurities. 4.Easy to Install - No special tools required. Just insert water line into built-in plugs eliminating the risk of leaks. 5.Packaging upgrades. Operating Parameters Flow rate: 0.66 GPM Capacity: 6 month / 200gallons PRESSURE: 30-125PSI (207-852kPa) Temperature: 1-38 (34-100F) product life: 6 Months or 200 Gallons Installation Instruction 1.Shut off water source 2.Remove the existing product by turning i left,and then take it out 3.Remove the cap of a new product,insert it into and turn right to lock it in place 4.Recover the water source,and check it there is leakage 5.Run the working process for 4 minutes(about 8 cups of water )for purge 6.Reset replacement indicator light by pressing the ICE TYPE button and the CHILD LOCK(or MOISTURE CONTROL)button simultaneously for 3 seconds