Does the salt system cartridge need to be cleaned?

When the calcium hardness is maintained at 50 ppm or less, the salt system cartridge will not need cleaning before replacement. However this is dependent upon spa usage and on the water being properly balanced and maintained. To determine if the cartridge needs to be cleaned, power down spa, remove cartridge, and allow cartridge to fully dry. If cartridge electrodes have a “white” calcium coating, then the cartridge should be cleaned with pH down or diluted vinegar.