Hello. I have an old Vigor lathe motor. It’s 115 volts ac/dc. My question is, how many amps and what hp is it ? I’m interested in purchasing a variac speed controller and concerned about getting one that’s safe for the amps that I have. I’m looking for plug and play, no complicated altercations. Also, is there any basic maintenance that can be done to these motors, do the need oil or grease ? Thanks in advance.