I hate to ask a silly question, but ...
Which way do the rotors spin while in use: with the rotors moving the air down through the middle squeezed between the rotors, or the other way, creating two streams of air each flowing along the inner surface of the case trapped by the rotor, then merging together again at the exit port(s)?
Does the air flow in the rear port, in to the area of the case above the rotors and then down between them through the middle of the unit and out the bottom ports? Or, do the rotors spin the other way creating two streams of air trapped between the case and the rotors, which merge near the exit ports?
Down through the middle seems more likely, but I'm not sure. I sure like to see an unmounted unit once in the flesh.
What is the dark coating on the rotors?
Thanks!
:shrug:
Which way do the rotors spin while in use: with the rotors moving the air down through the middle squeezed between the rotors, or the other way, creating two streams of air each flowing along the inner surface of the case trapped by the rotor, then merging together again at the exit port(s)?
Does the air flow in the rear port, in to the area of the case above the rotors and then down between them through the middle of the unit and out the bottom ports? Or, do the rotors spin the other way creating two streams of air trapped between the case and the rotors, which merge near the exit ports?
Down through the middle seems more likely, but I'm not sure. I sure like to see an unmounted unit once in the flesh.
What is the dark coating on the rotors?
Thanks!
:shrug: