I have an ~8,000 gallon in-ground pool in Florida. My pool has a solar heating system as well as a dedicated pool vacuum suction line. The normal operating pressure was 10-12 PSI without running the solar system. I recently backwashed and cleaned my DE filter grids. Upon putting the pump in service I noticed the pool was now operating at 15 psi. Given my DE filter system was approx. 7 years old I decided that perhaps it would a good time to replace the filter grids. After completing the replacement and recharging the DE the pump pressure was still operating at 15 psi. If I turn on solar system the pressure runs at 20 psi.
I'm stumped as to why such an increase in both normal and solar operating pressure increases. I can lower the pressure by partially closing the Main Drain and Skimmer valves but I never had to do this in the past. Is it possible I have a bad valve on the suction or return lines? Is it possible I have an air leak?? I don;t see any water leaks in the piping or valve system.
When I use my pool Vac I have to partially close the Main Drain and Skimmer valves to get good movement for the vacuum.
I'm stumped as to why such an increase in both normal and solar operating pressure increases. I can lower the pressure by partially closing the Main Drain and Skimmer valves but I never had to do this in the past. Is it possible I have a bad valve on the suction or return lines? Is it possible I have an air leak?? I don;t see any water leaks in the piping or valve system.
When I use my pool Vac I have to partially close the Main Drain and Skimmer valves to get good movement for the vacuum.
