Hayward Perflex EC40 Filter Pump System

Diatomaceous earth is a fine powder that acts as a microscopic sieve, capable of trapping particles as small as 2 to 5 microns. In contrast, standard sand filters typically only capture particles down to 20 to 40 microns, meaning DE filters provide significantly clearer water.

You generally need to add fresh DE powder every time you backwash the filter, as the old media is flushed out during the cleaning process. The internal filter grids themselves typically last several years before needing a deep cleaning or replacement.

Yes, the Perflex EC40 is designed to handle the filtration requirements of both pools and spas. Its compact, efficient design makes it a versatile choice for various water volumes, provided the system's flow rate matches your specific setup.

The EC40 is designed to work with a compatible pool pump that provides the necessary flow rate to circulate water through the filter grids. Ensure your existing pump's horsepower and flow capacity align with the manufacturer's specifications for this model to avoid performance issues.

The main task is monitoring the pressure gauge; when the pressure rises 8–10 psi above the clean starting pressure, it is time to backwash. This process clears out the trapped debris and spent DE, allowing you to recharge the system with fresh powder.