检查安全链，确认所有的警示灯是正确连接好了。

Check safety chain hookup. Make sure all warning lights are hooked up and functioning correctly.

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设备平台梯上的安全链只有有人在平台上工作时应挂好。

Equipment platform ladder safety chains shall be and will be hooked only when someone is working on the platform.

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所有紧急梯安全链要随时挂上，除人员正在进入或离开梯子时。

All emergency ladder safety chains shall be up at all times except when person is entering or leaving ladder.

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