Originally Posted by sunsetdart
Is this fan labeled as a "pusher" or is it a puller that you turned the blade backwards to make it a pusher?
Reason I say this is you want a true pusher fan like a Spal. They work very well and had one on my 600HP motor for 9 yrs with no problems.
You don't turn blades on electric fans, you reverse polarity on the leads to change direction.