My Polaris pump recently quit, so I decided to take the thing apart to see what I could find. I turned the jandy valve to spa mode, which I thought would cut off the water to the cleaner. I was wrong, and I think I now know why.
My equipment is downhill from the pool. Putting the valve in spa mode cuts off supply to the return/cleaner, but it doesn't prevent backflow from the return. That's my theory, at least. Am I missing a check valve perhaps? Or maybe I'm supposed to have a shutoff valve? Or maybe I have one and I'm just blind?
I swear that the guy who installed my spa heater managed to turn the water off somehow. I would assume you would have to do that to get pipe dope to dry, but I have no idea how he did it. Any help?
I'm a pool newb (obviously) so please be gentle.