There is s rattling in my DE filter (sounds like plastic hitting the lid) and pump won't prime (fills up basket 75%). Filter pressure up about 5-10 psi over normal. Just showed up over night. I think I have a small rip in one filter grid, as DE showed up in the Polaris cleaner net Before I put on the winter cover.
First plan was to take apart filter, but will have to take off half of work to work on it before sun goes down and its getting low enough to turn on the freeze guard.
Any ideas? Do I need to drain the system and shut it down while I diagnose? Temps don't get higher than 68 this week but low of 25 sat and don't want to do anymore damage to system.