1. Are you sure the motor is wired for the correct voltage? If you have 230V 3PH,Make sure that you do have 3 hot legs. you should have L1-1+7, L2-2+8, L3-3+9 and 4+5+6 connected together. If it is wired for 480V it will not have enough torque. Check rotation. There should be an arrow on pully (large one on compressor)
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