Hayward filter

grumpyoleguy

New member
Jul 8, 2024
2
Florida
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
New to the group.
Have an issue and I need help with. I have never seen this happen but, when I start the system up and the pump begins to prime up, and just when the water is fully flowing and pressure on the filter reaches 26psi, the lid of the filter will pops up an 1/8th of an inch and goes back down. Then the pump looses pressure. No strong out flow at the jets and no strong suction at the skimmer. I can not hear and air leaking or any signs of water leaking at any of the pipe connections. I'm getting to the point of just re-piping the whole dang thing. I've checked the rod that the top screws onto is seated all the way down. Pressure relief is tight, seals are lubed and locking is tight.
 
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