Manitowoc GROVE GMK5150L, Operating Manual

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Crane operation
11.5 Crane operation with main boom
Operating manual 3 302 709 en 11 - 73
GMK5150L
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11.5 Crane operation with main boom
11.5.1 Checks during crane operation
Horizontal
alignment During crane operation, the truck crane may tilt if the ground gives way due
to varying loads.
•
Check the horizontal alignment of the truck crane during crane operation
on the display (
1 );
à
p. 12 - 60.
Due to deformation of the frame, the horizontal alignment can change by up
to 2° when the superstructure is turned from the 0° or 180° position.
If the truck crane does not return to the horizontal position after being
turned back to the 0° or 180° position, you must immediately determine
the cause and eliminate it and, if necessary, realign the crane. Observe the
position of the superstructure when doing so;
à
Levelling the truck crane on
outriggers horizontally
, p. 12 - 60.
Safe distances During crane operation, always ensure that the truck crane and the load are
at a sufficiently large distance to objects and persons. Pay particular atten-
tion to objects that pose a direct danger (for example, gas containers or
scaffolding).
Keep a safe distance to electrical cables;
à
Safe distance from overhead power
lines
, p. 12 - 16.
s
G
Risk of accidents if the truck crane is not level
The RCL calculates the working radius from the length and angle of the
main boom. The actual working radius changes and there is a danger of the
crane overturning if the truck crane is not level.