Brand new motor cycles on/off every second.

[Pullingguard]

I threw the old motor away before the new motor arrived as I figured there was no need to keep it and it die on trash day. So I can't check it. The pump model is Hayward sp2607x10. Per the Hayward brochure I just found online the pump/motor has the following info. 1 hp, 1.1sf, 230/115v. The previous motor appeared to have been the original motor that came with the pump.

The nameplate on the new motor is 1 hp, 230/115 and 1.1sf. So it matches. Below Is the amazon link where I purchased it.
http://www.amazon.com/Electric-UST11...ywords=Ust1102

The voltage at the motor is 230 but I have not verified it with a multimeter yet. And it's a replacement so and the old one worked fine for the past two years I've own the house. I may check the impeller to make sure the previous owner did not put the work impeller in for some reason. And the breaker at the main panel was 230 so I'm pretty confident that the problem is not with the power to the pump.

[BigDave]

Sounds like the motor's the same (it's not the UCT1102 is it?). Check the wiring, check the voltage, check other wiring connections that may have been disturbed. A bad connection can be the cause of high resistance which would drop voltage at the motor.

[PoolDoc]

One possibility: the pump is wired incorrectly -- there are many ways to do so. Another is: the pump is set to 120V but supplied with 240V.