Crane operation
11.5 Crane operation with main boom
11 - 78 3 302 819 en Operating manual
GMK3060
13.12.2018
Checking the
wind speed
Strong winds can result in the truck crane becoming overloaded.
• Prior to and during crane operation, check whether the current wind speed is
lower than the maximum permissible wind speed.
The display (1) shows the current wind speed.
The maximum permissible wind speed (2) or the
reduced wind speed (3) specified in the Lifting
capacity table applies to the confirmed rigging
mode.
The display (1) flashes in colour in the vicinity of
the maximum permissible value v
max
(2) or (3).
If an anemometer is not available, or in the event of a fault, you can find out which
speeds are forecast by contacting the relevant weather stations.
The lifting capacity table contains an overview of the wind strengths, wind speeds
and their effects.
If the maximum permissible wind speed is exceeded
No automatic shutdown occurs if the maximum permissible wind speed is
exceeded.
• Immediately cease crane operation.
• Put the truck crane into the rigging mode specified for the current wind speed
in the lifting capacity table.
– Yellow: about 90 - 100% of v
max
reached
– Red: v
max
exceeded
G
Risk of accidents at excessively high wind speeds!
If the current wind speed is higher that the maximum permissible wind speed,
stop crane operation immediately and set up an appropriate rigging mode.
This will prevent the truck crane overturning due to overload.
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