It's a 240v ac cap start/run induction motor which cannot be run from a dimmer to control speed. Neither can it be controlled from a 3 pos sw without that sw being part of a variable frequency drive. It is possible that it may be wound as a 2, 4 or 6 pole giving speed control via switching the appropriate circuit for 2850, 1440 or 900 rpm but not enough info to determine. Edit...closer view says no, just single speed motor.