I just installed a hayward super 2 2 speed pump to replace my old hayward super 2 1 speed pump. I wired a spdt toggle to control the speed as per suggestions here and it seems to be working well. I discovered my pump failure about 2 days after opening the pool. I have not yet backwashed and filter pressure which is usually 18 after a backwash is 28 when the pump is on hi and about 10 when the pump is on low speed. I will backwash the filter later this evening.
It seems that my polaris 280 which has a booster pump does not work when the pump is on low but does work when the pump is on hi. Is this normal? As I never have had a 2 speed I need instruction on how and when use the high vs the low pump speed.