I accidentally ran my pump on the "closed" setting for the filter for a few minutes before I realized it and now when I run it on "filter" (as I should, duh), it sounds like there is somethin small rattling around in the body of the pump. It s a brand new 1 HP Pentair Optiflo. I am paranoid about it already because we have had many pool problems this summer and spent a lot of cash. Please tell me I did not break it by running it on "closed"! Is there a way I can clean it out. Maybe there are just some bigs or sediment in it? We live by a lot of woods so our pool gets a lot of leaves, bugs and small seeds in it.