How can i change the replacement cartridge?

Wed 24 Nov 2021

To Change Filter Cartridges

Turn off water supply to filter. If unit is Valve-In-Head style, rotate handle on top of housing to OFF position.
Depress pressure release button (if present) to relieve pressure in filter housing.
Unscrew housing using spanner wrench. NOTE : When opening filter housing to change cartridge, it is common for O-ring / Gasket to lift out of housing and stick to cap.
Remove used cartridge and discard. Rinse out housing and fill about 1/3 full with water. Add about 2 to 3 tablespoons of bleach and scrub thoroughly with brush or sponge. Rinse thoroughly.
Remove O-ring/Gasket from sump and wipe groove and O-ring/Gasket clean. Lubricate O-ring/Gasket with a coating of clean silicone grease. Place O-ring/Gasket back in place and press O-ring down into the groove with two fingers (or place gasket on rim of sump). NOTE : This step is important to ensure proper filter seal. Make sure the O-ring is seated level in the groove (or gasket is on rim of sump). CAUTION : If O-ring/Gasket appears damaged or crimped it should be replaced at this time. See your local dealer for replacement parts.
Insert a new cartridge into the sump making sure that it slips down over the sump standpipe.
Screw the sump onto the cap and hand tighten. DO NOT OVER-TIGHTEN. Make sure cartridge slips over the cap standpipe.
Turn on the water supply slowly to allow housing to fill with water. When using a Valve-In-Head, rotate handle slowly to the ON (Filter) position.
Depress the pressure release button (if present) to release trapped air from filter.
Check for leaks before leaving installation.

IMPORTANT NOTICE: To prevent costly repairs or possible water damage we strongly recommend that the bowl or sump of all plastic housings be replaced periodically : every five years for clear sumps, and every ten years for opaque sumps. If you sump has been in use for more that the recommended period, it should be replaced immediately. Be sure to date any new or replacement sump for future reference and indicate the next recommended replacement date.