When the arm runs to the upper and lower two limit position, respectively press the lower limit switch, cut off the main control circuit, variable amplitude motor parking, to limit the role.
当臂杆运行到上下两个极限位置时，分别压下限位开关，切断主控电路，变幅电机停车，达到限位的作用。
There is safety switch at the inspection hatch of the hood. If the hatch is opened, the power of motor will automatically cut off to ensure the safety of inspection personnel.
机顶盖检修口设有安全检测开关，形成断电安全装置，当检修口打开时自动切断电机电源，确保检修人员的人身安全。
Before carrying out the disassembly work, be sure to turn OFF the motor switch and affix a tag indicating "no POWER ON" or the like to the switch so that the switch will not be turned ON by mistake.
在进行拆卸工作之前，一定要关闭马达开关，并把标明“请勿打开电源”之类的标签贴在开关上，这样开关就不会被误开了。
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