Originally Posted by dan-c
I don't think it's a good idea to have a dimmer on an ac motor unless it's made for it. IIRC it's a fire hazard from the heat generated by low voltage to the motor.
It's called out in the specs. There are several options on this unit. High speed only, low speed only, two speed (with a spdt switch) or variable speed. They do not call for a PWM, a rheostat is fine. From the literature:
Models 100, 100x and 125
Single-phase, 120V 60Hz, shaded pole induction asynchronous motor in die cast aluminum. All• Suitable for working airstreams up to 104° F (40°C).
motors include direct two speed connection and are also suitable for voltage speed control.
• Class ll electrical insulation (model 100) & Class l (models 100x and 125)
• IP 44 Protection
• Class B Motor Insulation
• Safety auto reset Thermal Overload Protection (fuse type)
• Self-lubricating sleeve bearings.
I dont' remember if I have an "X" or not. The X has a self-resetting breaker, instead of a fuse.