Compressor Pump Down

[taz24]

Thanks Dan,



Do I pull a 500 micron vacuum on the compressor head and then charge it with some refrigerant after I install the new pressure switches?


Thanks,
KETTLER

Where is the hp / lp switch fed from.
You need to be careful because if they are fed from the service valves then it is important to know how the valve is seated.
If the switches are fed straight from the comp body then just isolate the comp, valve off the comp from the pipework and then remove the gas from the comp. Change the switches and pressure test. Then vac the body of the comp. Open system up and run on test.

taz.