Overload Safety Feature
If the maximum load capacity is exceeded, all working movements that increase the
load moment and `lower boom' are switched off.
Shortly before the maximum load is reached, the crane overload warning lamp (1) on
the crane column illuminates.
The crane overload warning lamp (1) will flash once when the crane is switched on, this
indicates that the crane overload safety circuits are operating correctly.
Figure 2. 33 Crane Overload Warning Light
The crane load is reduced by working movements that decrease the load moment,
once this is done the full working functions are restored.