Concerning high PSI

RPH87

New member
Jul 2, 2023
2
Virginia Beach
I’ve just started opening our pool (26k gallon, SWG) this season after converting our DE Filter to a sand filter with glass media. Removed the cover, all plugs and replaced all eye holes. Pump rings and drain plugs looked over and plan to replace on o ring on a drain plug but everything’s in good condition- minor air leak from the o ring I believe.
I thought it was odd but the pressure gauge read 40!! before even turning the equipment on. Thought I’d just back wash alittle and it go down but no change in pressure. I ran it on recirculate for a few hours to let the chlorine do its part but came out this morning to see the pressure needle “redlining” (just before the 0 but on the other side of the screw - think about to make a full lap).
I tried to remove the drain cap on the filter thinking some air could be trapped and maybe purge our but nothing came out - typing this out realize air would rise and water come out 😂.

How could the pressure rise on recirculate?
How do I get this pressure down?
Why isn’t it draining?
Is my family/house in any danger with such high pressure? - the equipment is next to the house behind a 3ft fence but more concerning next to a concrete pad the kids play hoops on.

Thanks in advance for any help/thoughts!
 
If the gauge doesn't return to 0 when off, it's time for a new one. Get a 30 PSI one and you won't have to squint as much at it. (y)

And belated Welcome to TFP !!!