Manitowoc Grove GMK 5250L Operating Instructions Manual page 917

Switching the
continuous opera-
tion on and off
S
Operating Instructions GMK5250L
After switching over the valves, you must additionally switch one valve to
continuous operation.
1
Danger due to falling loads!
Switch off continuous operation immediately after emergency activation.
Check that the pin can be seen on the cap.
Thus you prevent loads from falling down immediately after lifting in
subsequent crane operation.
Switching on continuous operation
•
Unscrew the cap (2) from valve Y1104 –
Lowering (1).
•
Remove the plug (4).
•
Screw the cap with pin (3) on to the valve –
continuous operation is now switched on.
Switching off continuous operation
•
Unscrew the cap (2) from the valve (1).
•
Screw the cap on so that the pin (3) can be
seen.
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Malfunctions during crane operation
14.6 Hydraulic emergency operation
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