Filter Cleaning - Unable to close the lid

[PoolDoc]

Not me! My approach to those things is to remove them, and arrange the heads so that there is some supplemental circulation, but no cleaning action. (I'm not a fan of in-floor cleaning systems: they are massive energy hogs, and seem to rarely work well after the first few years.)

[rkrgk]

I put back everything and i can see water coming through the pop up system, but it doesnt popup, may be i need to change the plastic pistons.
Now the pressure seems to be at 35psi. I think I really need to change all the grids or may be atleast clean them thoroughly. How do you know when to replace the grids? I replaced 3 of them since 1 was torn and 2 were broken by poolguy.

[txtd1]

I'm having the same problem as mentioned initially in this thread with getting the clamp on my filter. I have the Hayward Micro clear 4800. Thanks in advance for your help.

[txtd1]

Turns out my o-ring was the problem. Even though I did not remove the ring when I cleaned the cartridges, it had expanded when I opened the tank and released the pressure. A new ring and the lid goes back on.

[Watermom]

Thanks for coming back to post what you discovered. May help someone else who has a similar problem sometime!