I am looking into setting up a dust collector. This is going into a lean-to outside of my shop. I have been given an old Torit dust collector that I am going to retrofit. It has a 3 phase motor and I plan on replacing this with a single phase motor. My question is what type of motor should I buy. I plan on a TEFC type but am wondering if I should buy a compressor duty or some other type and what RPM should I get. I may build or buy a cyclone to add under the blower.