After unloading the materials, the working staff leave the coop, make the safety inserting block draw back, give commending signal to the operation staff.

 
  • 卸料完毕;工作人员离开吊笼;操纵手柄使安全插块退回后;给操作者一指挥信号;操作者接到信号后方能继续开机.
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