求翻译：当气压上升至额定值时，应检查各连接处有无渗漏，对人孔盖、手孔盖及阀门、阀兰的连接处进行认真的检查紧固，切不可用力过猛或加力紧固螺丝，以防将螺丝紧断而导致蒸汽或热水外泄伤人；是什么意思？

When the pressure increased to the rated value, you should check all connections for leaks, manhole cover, hand hole cover and valves, valve blue junction careful examination fastening must not be too much force or afterburner tighten the screws to prevent the screws tight off which led to the wound

When air pressure should be increased to fuse, check the connection, the leakage of manhole covers, handhole covers and valves, valve, a connection to conduct serious inspection fasteners effortlessly, it must not be excessive or Carrie fasteners screw bolts tight to prevent the resulting steam or h

When barometric pressure rise to rated value, whether there is should inspect various attachment points to seep, to the manhole cover, the hand hole cover and the valve, the valve blue attachment point carries on the earnest inspection fastening, cuts cannot make an effort fierce or the thrust augme

正在翻译，请等待...

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