As you look into the compressor system, determine if the motor is started "frequently", as in controlled by a pressure switch, or runs all the time and unloaded, or, running on an included variable drive to adjust provided volume to needed volume. If there is an inverter (or soft start) included at 460, and the motor terminations wired for 230, a new inverter (or soft start) would be required. If unloading is used, a soft starter is unlikely to give problems, and will help on a soft supply.
