I just replaced a 10 ton scroll compressor on a 20 ton system. before I installed the new compressor I flused the coils with CF-20. I used 4 nitrogen tank to blow out the residual CF-20. installed new filter drier. placed system on a vacuum for 1 days because I was unsure as to how much CF-20 was left in the system.I go to the job today to remove vacuum ( I did get the vacuum down to 500 microns ) I noticed that T3 leg on the compressor has been hot as it is wired direct to the incoming power lug. I also notice that the L3 leg of power has a blown fuse. Also the oil sight glass is full. I check for grounded compressor and find no ground. Im wondering if that Cf-20 has filled the compressor and is causing a short. How can I have a short in a compressor that has never run?