Manitowoc Grove GMK4100L-1 Operating Manual page 983

For lifting/
lowering
S
Operating manual
GMK4100L-1
After establishing hydraulic circuits, switch one additional valve to continu-
ous operation.
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 falling down immediately after lifting in subse-
quent crane operation.
14.7 Hydraulic emergency operation as per BGR 159
Switching on continuous operation
Always switch only one valve to continuous
operation.
1 Valve Y1104 – Lowering or
2 Valve Y1105 – Lifting
•
Screw off the cap (3), e.g. off 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
•
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).
3 302 690 en
Malfunctions during crane operation
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