Crane operation
10.5 Crane operation with main boom
10 - 88 3 302 633 en Operating Instructions GMK5250L
27.09.2017
Lowering the
main boom to
a horizontal
position
The main boom can be set down by referring to the working curves within
the working range specified in the
lifting capacity tables.
These additional pages supplement the information (1) in the
lifting capacity
tables
supplied for the main boom intermediate lengths.
To prevent any overloading of the derricking cylinder, the derricking
cylinder pressure is also monitored here.
In area (Z) of the main boom intermediate
lengths it can be the case, particularly with
main boom angles below 15°, that loads spec-
ified in the
lifting capacity table are not reached
for shorter main boom lengths.
In this case the RCL shows the reduced maximum load bearing capacity on
the
Maximum load display.
The RCL continuously calculates this value while taking the derricking cylin-
der pressure into account. If the current load is too big, the RCL shuts down;
à p. 10 - 58.
To Next Page
Loading...
