In a vacuum exhaust system, sealing steam to the turbine shaft labyrinth seals must be admitted to avoid loss of vacuum.

在真空排气系统中，必须引蒸汽到汽轮机主轴迷宫式密封，以防真空损失。

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Seal air is injected into the labyrinth seals located at the main motor shaft (top and bottom) and at the pinion shaft driving the motor.

密封空气被注入到主马达轴（顶部和下部）和驱动马达的齿轮轴的迷宫式密封里。

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Prior to startup, get rid of tape from labyrinth seal end of input shaft, labyrinth seal outer surface of output drive flange and respirator.

启动前应除去减速机输入轴迷宫密封端面和输出传动法兰迷宫密封外圆表面，以及呼吸器上的防锈包装及胶带。

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