Hello all,

I just installed a replacement Polaris PB4-60 pump to replace my old unit. Everything seemed to hook up okay, I wired the unit for 115V usage like the old unit, attached all the existing lines and fired her up. The pump was very loud. The noise sounds like loud compressed air. There is good outflow into the pool and apart from a few bubbles at start up there are no bubbles coming out into the pool. My Hayward filter pump is running quietly with no air under the cover.

Any ideas?

Oh, I replaced the old pump because it was getting louder and louder all the time. I figured it was bearings but now I'm not so sure!

Thanks!