Malfunctions during crane operation
14.7 Hydraulic emergency operation as per BGR 159
Operating manual 3 302 690 en 14 - 65
GMK4100L-1
23.11.2017
14.7.7 Establishing the required hydraulic circuits
You must switch over the necessary valves to establish a hydraulic circuit.
Switching
over valves
The valves 1 to 5 are labelled with their respective numbers.
For crane operation
• Switch the valves 1 to 5 downward.
s
G
Danger from mutual interference of the power units
For crane operation, always switch all the valves 1 to 5 down. This prevents
the power units suddenly starting to move.
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