cavitation

  1. E

    Cavitation or bad bearings?

    Hope someone can help, I'm so frustrated. My 1hp pentair Super flo just died. My brother gave me a 1.5hp pentair Super flo he is no longer using. I am using it now and it makes the most dreadful noise. It chugs like a train and grinds. It is so loud I can hear it in my house. I don't know if the...