Central FL, 10K gal, in-ground, 1.5hp
Pool -> pump -> filter -> jbfv1 -> solar up -> solar down -> jbfv2 -> chlorinator -> pool
(jbf= jandy back flow valve with window)
(chlorinator is for 3" tabs, inline but empty & functionally off)
I just turned the solar on today and immediately see and hear lots of bubbles on the return side. The condition was not present when I turned the solar off last fall. It acts like there is air intrusion on the suction side. However, the pump see-through basket shows no air and the window on the Jandy back-flow valve #1, before the pipes go to the roof, shows no air. The back flow valve #2, after the roof, shows lots of air visible.
This totally confuses me. I don't understand how air can be sucked into the piping on the roof, which is on the pressure side of the pump. FWIW, there is no visible leakage of water from the roof (or anywhere else in the system).
Obviously, I don't understand something fundamental because I would have thought the symptoms I'm describing would have been impossible. I would greatly appreciate any enlightenment (or even informed guesses!). Thank you.
Pool -> pump -> filter -> jbfv1 -> solar up -> solar down -> jbfv2 -> chlorinator -> pool
(jbf= jandy back flow valve with window)
(chlorinator is for 3" tabs, inline but empty & functionally off)
I just turned the solar on today and immediately see and hear lots of bubbles on the return side. The condition was not present when I turned the solar off last fall. It acts like there is air intrusion on the suction side. However, the pump see-through basket shows no air and the window on the Jandy back-flow valve #1, before the pipes go to the roof, shows no air. The back flow valve #2, after the roof, shows lots of air visible.
This totally confuses me. I don't understand how air can be sucked into the piping on the roof, which is on the pressure side of the pump. FWIW, there is no visible leakage of water from the roof (or anywhere else in the system).
Obviously, I don't understand something fundamental because I would have thought the symptoms I'm describing would have been impossible. I would greatly appreciate any enlightenment (or even informed guesses!). Thank you.