Advanced Refrigeration: Oil Pressure Control and 3 Phase Lecture recording

This was a lesson done with an online class on March 20, 2020 covering Oil Pressure Controls and some 3 Phase Power for refrigeration wiring diagrams. I can't make the diagrams available for non-students, but I hope this will help someone. It is 90 minutes and does involve taking time for student questions as well as some students that had problems getting online. Sorry about that.