Manitowoc Grove GMK6300L Operating Manual page 971

For lifting/
lowering
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Operating Manual GMK6300L
After establishing hydraulic circuits, switch one additional valve to
continuous operation.
Danger due to falling loads!
Switch off continuous operation immediately after the emergency activa-
tion.
Check whether the pins can be seen on both caps.
In this way, you can prevent loads falling immediately after being lifted
during subsequent crane operations.
Switching on continuous operation
Always switch only one valve to continuous
operation.
1 Valve Y1104 – Lowering or
2 Valve Y1105 – Lifting
•
Unscrew the cap (3), e.g. from the valve (1).
•
Remove the plug (5).
•
Screw the cap and pin (4) on to the valve –
continuous operation is now switched on.
Switching off continuous operation
•
Remove 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).
3 112 xxx en
Malfunctions during crane operation
14.6 Hydraulic emergency operation
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