How to Clean a Cartridge Swimming Pool Filter
Turn off the pool equipment – turn off the main circuit breaker for the swimming pool equipment or the circuit breaker at the pool equipment if needed, but make sure the pool equipment does not start up while the cartridge filter is apart
Relieve the pressure from the system – open up the pressure relief valve on the main filter in order to release all the pressure from the system.
Drain the water from the cartridge filter – unscrew and remove the drain plug from the filter housing in order to completely drain the filter of water.
Open the filter housing - once all of the water is drained and pressure released from the filter, carefully open up the filter housing.
Remove the dirty cartridge filters – carefully remove the dirty filter cartridges from the filter housing.
Thoroughly clean the cartridge filter element(s) – using a high pressure spray nozzle on the hose, thoroughly spray the cartridge elements down until as much of the dirt and debris as possible is removed and the water runs clear. For the best results, work from the top down and spray of the filter cartridges at a 45 degree angle.
Clean the filter housing – spray down the filter housing in order to remove any dirt or debris. Make sure the o-ring is clean in order to get a good and tight seal when the filter is reassembled.
Re-insert the clean filter cartridges – carefully re-install the clean filter cartridges in an opposite manner that they were removed.
Close and secure the filter.
Restart the pool equipment - when restarting the pool equipment, leave the pressure relief valve open until all the air has been purged from the filter.
Note the pressure - once the filter is up and running again, make a note of the pressure on the pressure gauge. When the pressure goes up 10psi, it is time to clean the cartridge filter again.
Establishing and sticking to a routine cleaning schedule for cartridge pool filters is half the battle when it comes to having a clean and sparkling swimming pool.
Remember, for best results when cleaning a cartridge swimming pool filter, read and follow the manufacturer's instructions carefully. If the instructions have been lost or misplaced, contact the manufacturer for replacement instructions. Often times the manufacturers provide easy access to downloading the instructions from their web site.