An instruction to the operators about the communication system between the operator in the cradle and the operator near the roof trolley is mandatory.
The phones are connected to the control panel and through copper conductors inside suspension wire ropes to the cradle.
The wind speed can be set and programmed into PLC of BMU such that when the preset speed is reached the operation of the BMU can be stopped with an audio alarm.
The communication is fool proof and effective.
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