Quote Originally Posted by allison
I'm sorry I realize this is a dumb question but this is our first summer with the pool and they showed me in May how to backwash and I only now need to do it but I forget how. I have a DE filter and I think I'm just supposed to pull the handle up but should the pool be on or off? Also, how long do I hold the handle up for?
Any help is greatly appreciated.
Allison

The first thing to keep in mind is you should always cut the pump off every single time you move the multiport valve. Anyhow, here is a thread that should more than help you out on Backwashing a DE filter.

http://www.poolforum.com/pf2/showthread.php?t=3613


Hope it helps,
ThePoolGuy