Crane operation
11.1 Before operating the crane
Operating manual 3 302 819 en 11 - 11
GMK3060
13.12.2018
11.1.4 Checking the safety devices
Rated capacity
limiter
• Switch on the rated capacity limiter (RCL), do all of the checks and enter and
confirm the current rigging mode;
à Entering the rigging mode, p. 11 - 36.
• The RCL is working correctly at this point in time if no error message is pending
and if crane movements have been enabled.
If the RCL is not working correctly, do not start crane operation but rather notify
Manitowoc Crane Care.
Lifting limit switch
• Raise the main boom until the hook block is lifted off the ground.
• Slowly perform the Raise movement until the hook block lifts the lifting limit
switch weight.
• Now check that the Raise movement is switched off and lamp (1) lights up.
• Check that the Lower and Extend movements are also switched off.
The lifting limit switch is working correctly at this point in time if the lamp (1) lights
up and the Raise, Lower and Extend movements are switched off.
If the lift limit switch is not working correctly, do not start work with the crane but
notify
Manitowoc Crane Care.
s
G
Risk of accidents when working with faulty safety devices!
It is prohibited to operate the crane with safety devices that are faulty, overridden
or out of service!
Have faulty safety devices repaired immediately by
Manitowoc Crane Care.
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