Every machine is equipped with protect travel switch in order to increase safety coefficient for repairing and maintenance. It also has thermal overload relays to protect the motor.
每台机器均配有保护行程开关，为维修、保养增加一份安全系数。且装有热过载继电器，保护电机。
Wood in the high temperature coefficient of expansion will obviously, consumer can carry on some simple wooden through the maintenance, prevent the "heatstroke".
木制品比如木门的膨胀系数在气温高的时候就会比较明显，消费者可通过对木门进行一些简单的保养，防止其“中暑”。
It is important ensuring of safe running to select rope with adequate safety coefficient, to strengthen maintenance inspection and fatigue level monitoring of wire rope.
选择足够安全系数的钢丝绳、加强钢丝绳维护检查和钢丝绳疲劳程度的监测，是安全运行的重要保证。
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