Pentair Whisperflo Pump

[KAB]

Hi Everyone,
I have had some pool pump problems. This forum has been wonderful in helping me to always try and do everything myself first before calling the expensive pool guys. This year my pump has been really loud, I decided to try and replace the seal and bearings on it. My son and a neighbor tried to do it but must've bent the shaft because it wouldn't spin. Lesson learned. We ordered the exact same pump and installed it. However, it is spinning very slowly and not fast enough to prime the pump or get the psi up to my normal spot. The pump is super,super hot so we turned it off. Does anyone have any troubleshooting advice? Could it be defective? Anything else to check on it? All help is appreciated.
Thank you,
Karen

Pentair whisperflo 1 Hp pump

 

[jblizzle]

Did you replace just the motor or the entire pump?

Did you wire it for the correct voltage?

 

[KAB]

We replaced the entire pump.

We got the exact same pump. We looked at the label and it shows the exact same voltage. So I assumed we would not need to change any of the wiring.

 

[jblizzle]

Some of them can be wired for either 120V or 240V ... although the 1HP Whisperflo may only be 240V.

If it is wired correctly, and just turning slowly, I would guess you got a bad motor.

 

[sktn77a]

Yes, double check the wiring on the old and new pumps (reference to the wiring diagrams, if it's still legible on the old pump).

 

[KAB]

Ok. Thanks for that suggestion. I will doublecheck them both and compare.
Thank you for your help!

 

[Durk]

Also, check your incoming feed with a voltmeter. If one hot leg shorted to ground, it would blow a fuse upstream on that one leg and you would get 110V across your 220V circuit and cause exactly what you are seeing.