试题与答案

制冷机组如何抽真空?

题型:问答题 简答题

题目:

制冷机组如何抽真空?

答案:

参考答案:

①机组抽真空前开启系统内所有阀门

②关闭与大气连通的阀门

③开启压力表阀

④连接机组放空阀与抽氟机入口

⑤打开放空阀

⑥启动抽氟机

⑦确认机组真空度达到3mmHg(绝对真空)

⑧关闭放空阀

⑨停抽氟机

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