New pump install problems-help

[mas985]

Garvacious,

What were the specs on the old pump? HP & service factor and/or model #?

What was your filter PSI before and after pump change?

With 1 1/2" plumbing, you could be sucking some air into the system if the suction is much higher than what is was before. It is unlikely that the pump is cavitating because it takes quite a bit of blockage to do that.

The Superpump has a low SF so it shouldn't have much more braking HP than your previous pump. Unless, there is a good reason to upsize the pump I would stick with the same HP or even lower. You might want to consider a more efficient pump such as the Whisperflo or even Intelliflo. They cost more up front but will likely save you money over the life of the pump.

As for the SWG, it sounds like the flow switch isn't making contact on low speed. Try unscrewing the switch and adjusting the contacts (assuming that is the type of flow switch you have). Also, orientation of the switch can sometimes make a difference. Make sure it is pointed in the right direction.

[Garvacious]

My old pump was ancient, rusty, and seemed smaller in size than the superpump. The motor looked a bit newer like it had been replaced at some point. The motor was a 1HP Magnetek "E-Plus", I remember it was 6amps at 240V but never noticed the S.F. rating.

My old filter pressure was only about 3psi clean but I got great flow. I have no heater, only the DE filter and SWG.

With the 1.5HP superpump I get 10psi on the clean filter. Seems like a LOT of flow on high speed, almost too much without the Polaris cleaner hooked up.

Ordered a replacement 1HP unit to swap for the noisy 1.5HP, we'll see how it goes...I notice the 1HP superpump is only 5.8A on high speed, where the 1.5HP is 8A!