Cartridge elements need to be routinely cleaned (weekly) to ensure optimal performance. Every month you should degrease your filter with 'Renew'.
Your element will need to be replaced when it has started to wear. This can be seen by 'fraying' of the pleats, or gaps opening between them. This sinifigantly restricts the filters ability to maintain spa water clarity, and ultimately resulting in poor water flow and controller errors. In turn this will drastically increase your spa's running/chemical cost.
Astral Pool / Hurlcon Blaster 1000/3000 - Automatic Filter Cleaning
The Blaster 1000/3000 is designed to automatically rotate your swimming pool cartridge filter while powerjets spray focused water to clean the filter pleats. The Blaster 1000 can accomodate filters up to 508 mm (20inch, and the 3000 can accomodate filters up to 860mm (34inch).
The Blasters horizontal orientation allows dirt and debris to fall easily from your filter, avoiding the lodging that occurs in vertical cleaning.
The Blaster 1000/3000 is completely automatic. Just place your filter on, turn on the water and a few minutes later your filter is clean.