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Hello .. it is very strange that a 220volt single phase motor would be turning "backwards" as you say .. specially a new one right out of the box ... how is it that you have observed this ?/
the way that most 220 volt motors are reversed is in the wiring compartment there is a couple wires , usually marked T5 and T6, or T8 ,, if they are there and you swap them , that will change the rotation of the motor ..
But I would look again and make certain that the motor is indeed turning the wrong way ..
Any thoughts, concerns
Can you take a picture of the end of the motor with the impeller attached .. and another picture of the pump housing so I can see how the two pieces are related ?? you can post them here using the symbol above
and tell me what direction the motor is turning when looking at it from the shaft end .. CW or CCW ?? Thanks .. Rich