Methinks that the "some guys" and "those guys" are going to get someone a compressor rebuild before long. Why in the world would one lower the oil pressure and reduce the flow to an already overheating bearing at 189°f?
We needs a lot more info on whats happening during start to even start to answer the "Failure to meet Setpoint" on the oil pressure. And lastly is the chiller R-22 or 134a?
kay say: to what Richard is saying. This is not a do-it-yourself job. That's the reason detail wasn't given as to how to troubleshoot a vane motor switch. Might be a wise choice for you to get someone on site that's familiar with the chiller and it's operation to show you what you need to know, and that way you'll know next time.