Keep return piping valve closed until trap fills with condensate. Slowly open valve.

保持回路管道阀门处于关闭状态直到疏水阀充满冷凝物为止。慢慢开启阀门。

youdao

Keep return piping valve closed until trap fills with condensate. Slowly open valve.

保持回路管道阀门处于关闭状态直到疏水阀充满冷凝物为止。慢慢开启阀门。

youdao