1. Shut off incoming cold water line.
2. Locate filter cartridge and remove the cap from the top of the filter covering the filter’s O-Ring’s.
3. Apply a light coat of food-grade lubricant (as needed) to the O-Rings on the Nu-Plus EV Ice cartridge(s).
4. Prepare to insert cartridge(s) into filter head by holding cartridge with the label facing to the left. Insert cartridge and turn toward the right.
5. For twin or triple head installations repeat steps 2, 3, and 4 for each cartridge.