需排空气待压力表指示正常后继续下一步操作。
Air pressure gauge to be waiting to be instructed to continue normal operation the next step.
在正常操作条件下，压力阀是不用维修的，特殊情况需要维修时，应由专业人员来进行。
It is no need to maintenance under normal circumstance. It should be serviced by professional when repaired.
在正常操作条件下，压力阀是不用维修的，特殊情况需要维修时，应由专业人员来进行。
It is no need to maintenance under normal circumstance. It should be serviced by professional when repaired.
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