I have never seen a single phase, compressor duty motor where the rotation is "fixed". The RPM is critical as it is part of the formula to determine pulley size. Most motors used on these compressors are 3450 to 3600 RPM, as the compressor will rotate at 2300 RPM with 3hp motor and 1800 RPM with 2hp motor. With a 3hp it might not make much difference in pulley size, but you don't want to go beyond the recommended max RPM. Since the OP is in NY, I doubt the motor was 50hz. Where some motors can operate on both 50 and 60 Hz the RPM would be lower on the 50Hz, requiring a larger pulley.
Another big consideration if you decide to use an alternative brand motor is the location of the capacitors. You don't want the capacitor covers on the compressor side of the motor. It/they might inter fear with the motor mounting holes in the base.
Another big consideration if you decide to use an alternative brand motor is the location of the capacitors. You don't want the capacitor covers on the compressor side of the motor. It/they might inter fear with the motor mounting holes in the base.
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