I wanted to share my experience with my brand new Pentair Whisperflo pump... and I am extremely disappointed. I connected my pump and all electrical (running on 115V) and upon power up, the shaft turned about 3/4 turn and then stopped.. the motor hummed, and tripped my breaker.. The pump is 12 amps and is on a dedicated circuit with 14/2 wiring.. after turning the breaker back on, and encountering resistance when trying to manually turn the pump shaft, I powered up and it did the same thing.. I took all my wiring apart and re-did it- same effect.. I took the pump to a motor shop that has been in business 65 years and the guy told me it was the second exact pump like mine he'd seen with same problem.. The way it was assembled improperly, it was getting hung up, and being a low torque pump could not keep turning, hence tripping my breaker when it called for excess amps...
Don't remember what exactly was getting hung up but I do remember feeling this in the shaft when I was troubleshooting ... Now the **** part of this hole deal was not only did it cost me $25, I have now voided my warranty as this was not an authorized Pentair service centre.. What a rip.. Just thought I would share my disappointment with this Pentair product as I had assumed I was buying quality.. Buyer beware I guess.. And to save a few bucks I bought it online from a reputable distributor in the USA, so sending it back would have cost ample shipping..
Anyways... Hope no one else has this problem but if you do, this could be why..