Backwash newbie

[SalemCastles]

Here is the manual for your filter I believe ... seems a bit more involved than just a backwash.

http://www.pentairpool.com/pdfs/QuadDEFilterIG.pdf

[oroepke1]

Thanks for the info. I have the manual and had read it, but wasn't sure how it would work with the MPV valve (backwash vs. waste). Anyway I backwashed as I was supposed to (I think) however it didn't seem to get much of the DE out of the filter. I disassembled the filter and still found a lot of DE powder in there. The pool store told me that when I don't backwash frequently, it can be that it is hard to get the DE washed out. Anyway disassembling the filter did the trick and since it takes about a year to get my pressure up by 8lbs, I might just disassemble and clean the filter twice a year instead of backwashing. It doesn't take too long and I can see how things look on the inside :-) Thnks again for your help!