Compressor plus refrigeration oil add how much is appropriate, closed type

Valley 10HP scroll is it, generally need oil is 2000-2700ml can. Whether or not to refuel according to the actual situation, because the new machine is generally inside the oil, not long piping system is not required to refuel. Too much oil affects refrigeration and may cause oil shock. System leaks need to replenish the oil, need to be judged according to the experimental parameters, gradually refueling.