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