help? filter pressure issue!

[Poolsean]

Most people in the industry will use a 7-10 psi rise as a guage, regardless of the type of filter. I have a cartridge filter and go by a 7 psi rise.
It's best to use your starting pressure on high speed.

[mas985]

Most people in the industry will use a 7-10 psi rise as a guage, regardless of the type of filter. I have a cartridge filter and go by a 7 psi rise.
It's best to use your starting pressure on high speed.

I never quite understood why the industry recommends such a high PSI increase. 7 PSI is over 15 feet of head increase and I bet if you look on your pump head curve, you will be decreasing flow rates by over 25%. A 10 PSI increase is close to 23 FEET OF HEAD. Way too high for my comfort.

I clean my filter when it is not more than 1 PSI increase. Of course this is still only twice a year but even if I had to clean it once a month, I don't think I would let it get much above 3 PSI.