The Sta-Rite System 3 Cartridge Filter is an excellent swimming pool filter and will serve you well if you keep it maintained and cleaned properly throughout the year.

The Sta-Rite System 3 Modular Media Cartridge Filter comes in several different sizes – 300, 400, 450, and 500 square feet. The 300 sq. ft. filter is sufficient for most standard size swimming pools, but for pools over 20,000 gallons, the 450 or 500 sq. ft. filter would be recommended. For most swimming pools with a Sta-Rite System 3 Cartridge Filter installed, cleaning the filter quarterly is sufficient. Follow these steps to clean a Sta-Rite System 3 Cartridge Filter.

Turn Off Pool Equipment - make sure you turn container house off the pool equipment. If possible, turn off the circuit breaker for the pool equipment so the filter will not come on while the filter is disassembled. Relieve Filter Pressure - Open the air release valve on the top of the filter in order to relieve the pressure from the filter. Drain the Filter - Remove the Filter Drain Plug from the bottom of the filter in order to allow the water to be completely drained from the filter.

Open the Filter - while the water in the movable house filter is draining, remove the Posi-Lok clamps from the outside of the filter. You won't need to unscrew the clamps all the way… just enough to slide the Posi-Lok clamps up and off of the filter tank top.