Our pool is about 30,000 Gallons, in ground, with a Pentair CCP-420 cartridge filter; Hayward SWP15 chlorine generator, IntelliFlo 3HP VarSpeed Pump and a solar heating array. There is one waterfall; one top skimmer, two bottom skimmers/drains, three returns and a Baracuda MX8 Suction Side Pool Cleaner. The suction line is 2" and pool equipment pad is 60 ft from the pool. The filter pressure gauge is about 5ft above the pool water; the solar array is about 20ft from the equipment pad and about same level as pool.
Have not found definitive answer to pump speed and run time by perusing forum - seems too many variables are involved, so I did a little testing -- but am not sure how to interpret results. I ran pump at different RPMs with/without solar heater in circuit. Noted watts & pressure in filter. Here is data:
1] trying to run the pump at speeds below 1300 had the pump "stuttering". Even at this rpm the pump shakes slightly and pressure in filter is 0.
2] filter at startup is full of air - have been manually bleeding it. Is this normal?? Do I have to bleed the air or will the filter fill with water over time
3] Have no idea whether the GPM estimates are OK or off the wall
I would appreciate comments suggestions explanations. Ultimately I want to know how long to run and at what RPM/Watt consumption. Also - I'm puzzled why others can run pump in the 750-1000 RPM range and my system seems to need 1800-2200 RPM.