the opened items/back flange如何理解? 1. stop n2 feeding, spray soap water to all the opened items .(关于系统用氮气试漏) 2. if maintain this compressor alone, below action must be done: l blind the xx system and valve-1234( back flange ) l open discharge vent valve-234 to remove residue liquid. (问题2关于压缩机停车维护所需的操作)。 查看更多