Backwash Filter

[PoolDoc]

Those are cartridge filters; you take them out and wash them off with hose.

You should have a manual that explains how. I couldn't find an online manual on their site, however.

[matcin2531]

pooldoc is correct and to be a little more clear, backwashing is something you do with sand filters and not with the type of filter you have, so don't worry about backwashing yours.