So I think I understand this. If I want to vacuum or pump water out of my pool I should set my system to waste and that will bypass the filter completely and pump water out of the waste pipe. This is different from backwash where the water run through the filer in reverse and comes out the waste port. Is this correct?
My question is how do I set it to do this? There is only one rotary valve on the filter and it just says lock and open. I'm trying to pump water out of the pool.