We've been in our house for 5 years, and this is my first experience with a pool. (No expert, but learning!) The pool is 53 years old, and I have no idea how old some of the equipment is. Here's what's going on: I have a Hayward sand filter (SF71, I think). The multiport thing has always been very "tight"...hard to turn. I've noticed recently that when I move it to a new position (for example, from filter to backwash) the "pointer" thingy that usually goes into a down position just remains floppy. When I have backwashed recently, the sight glass doesn't get cloudy, but I've noticed cloudy water coming out of the jet into the pool after about a couple minutes of backwashing. Finally, the pressure indicator is always on 20...it never changes.
I watched the video on deep cleaning the sand filter (with a water hose). The problem is, I don't know how to "isolate the filter from the pool plumbing". The fellow in the video capped off something near the bottom of his filter, but I don't see anything like that on mine.
I'd appreciate any help with this. Of course, Memorial Day is upon us, and it's not looking good for me!
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I forgot to mention...I have NEVER done a deep cleaning of the sand filter. It sounds like that is something that should be done at least once a year.