GB 50243-2016 第8.6.2条
| **** | Refrigeration system vacuum test: evacuate the system to an absolute pressure ≤0.1kPa (or a vacuum degree ≥-0.1MPa), hold for 24 hours, and the pressure rise shall not exceed 0.5kPa (or the vacuum degree drop shall be ≤0.5kPa). |