I have an AO Smith 2HP pump that I replaced today for my pool, the replacement went smooth, but when the new pump is started, it just makes a dry running noise but no water circulates. I've tested the electrical, its in order. It just hums and gets very hot, but no water flows. I took it all apart to make sure it wasn't jammed up, the rotor turns, everything seems in order. What can I do?
I'm guessing that you replaced the motor that goes to the pump, not the pump itself. You know the motor works just fine. Is the motor rotating in the correct manner(clockwise or counterclockwise) in relation to the rotation of the pump? Have you checked the pump to see if the impeller is working/rotating? Is the motor hooked up to the pump correctly, so that the motor is turning the impeller? Are all connections to the pump tight, so there are no suction leaks? Have you primed the pump and purged it of any air locks?
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