Malfunctions during crane operation
14.7 Hydraulic emergency operation as per BGR 159
Operating Instructions GMK5250L 3 302 633 en 14 - 57
27.09.2017
For lifting/
lowering
After establishing the hydraulic circuits you must also:
– switch one valve permanently on,
– connect one valve to the hoist.
Switching on continuous operation
Always switch only one valve to continuous
operation.
• Unscrew the cap (3) e.g. from the valve (1).
• Remove the plug (5).
• Screw the cap with pin (4) on to the valve –
continuous operation is now switched on.
Switching off continuous operation
• Unscrew the cap (3) from the actuated
valve (1), (2).
• Screw the cap on so that the pin (4) can be
seen.
• Insert the plug (5).
s
1 Valve Y1104 – Lower or
2 Valve Y1105 –
Raise
S
Danger due to falling loads!
Switch off continuous operation immediately after emergency activation.
Check whether the pins can be seen on both caps.
Thus you prevent loads from falling down immediately after lifting in
subsequent crane operation.
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