We have recently purchased a home and are first time pool owners. We found the round pool drain cover that goes over the main drain at the deep end of our pool resting next to the drain one morning after we ran our pool cleaner. We attempted to reattach the cover but the housing where you screw the cover in is broken. For now, we have put the drain cover back in place, but it's not secured.
(1) what purpose does the drain cover serve? Is it there for safety or to keep debris out of the drain (or both)? Wondering if this not being secured over the drain has/is causing any problems we should have checked out.
(2) to repair this will we have to drain the pool? (say it isn't so!).