论文部分内容阅读
9 限压装置9．1 当要求时。运行压力高于大气压的所有系统必须装限压装置。但在装有少于221b(10kg)A1组制冷剂,并由国家批准和承认的试验室认可和鉴定的任何由制造厂密封的系统上则可以取消限压装置
9 pressure limiting device 9.1 when required. All systems operating at pressures above atmospheric pressure must be pressure-limited. However, pressure relief devices may be eliminated on any manufacturer-sealed system approved and certified by a nationally approved and recognized laboratory containing less than 221b (10kg) of Group A1 refrigerant.