Randy wrote:
Todd,
open the electrical box on the compressor when you start it, and
watch what is going on in there. That sound seems to me to be the
contactor in there chattering. With the VFD running the motor you
should not even need that contactor connected.

Where exactly should I be looking?

http://i166.photobucket.com/albums/u...comp/comp1.jpg
http://i166.photobucket.com/albums/u...comp/comp2.jpg

Should I remove the whole lower Allen-Bradley unit?

I'm afraid I'm really not that up on what is in that box.

Btw, thanks!