harryc123 Posted July 4, 2012 Report Posted July 4, 2012 Recently I replaced my 20 year old Hayward perflx filter with a newer model ec40ac. I kept my 1 hp pump as it was fine. This newer model runs quite differently from my old one and I was wondering if you guys could answe a few questions. My old filter started at 8psi precoated and would basically stop flowing water when it reached 20 psi. At that point I would bump. This new filter runs at 15psi right out of the box precoated. The water flow is much stronger than the old filter at 15psi when you compare it to the older models starting pressure of 8psi. However, once this filter reaches 20psi water flow practically stops. My old filter allowed me to get over 10psi before regeneration was needed. This new one only allows for 5psi. Even though the water flow is incredibly strong at it's starting pressure of 15psi, I can't help but think that this is too high when I compare it to the old filter. Is the pressure just the result of a newer design? My pool is 18x32 above ground. Quote
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