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抽真空是空调安装中的重要步骤,下面介绍具体步骤。
🔧准备工作
先没收安装工人的内六角板手。
🔌连接管道
将连接内外机的管道接好,上紧。
🔍连接压力表
在气管(粗管)三通阀修理口接上压力表连接真空泵,先开真空泵后再打开压力表阀门,抽真空开始后将压力抽置负0.1mpa,再抽15-20分钟,以压力表负压值为准。
🔒关闭压力表和真空泵
先关闭压力表阀门,再关闭真空泵。看压力表,观察压力是否回升。
🔍检测连接头
归还内六角板手用来打开液管阀(细管二通阀1/4圈),约10秒后关闭,用检漏枪或者肥皂水检测连接头等位置。
👍完成抽真空
摘表,液管/气管阀门全部打开,开空调试机。