If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.
如果排气系统处于真空下，必须在打开排气阀后，逐渐引蒸汽来加热壳体。
2
A combustible gas probe is arranged between the exit of the channel of the air casing and the exhaust gathering pipe.
气套通道的出口与排气汇管之间设有可燃气体探测器。
3
The utility model relates to an improved air purifier, comprising a casing (2), a filter (3), an exhaust blower (4), a high voltage power supply (5) and other parts.