Crane operation
11.5 Crane operation with main boom
Operating manual 3 302 690 en 11 - 121
GMK4100L-1
23.11.2017
11.5.9 Switching the reduction of slewing speed on and off
When the ignition is switched on the reduction of slewing speed is switched
on and depending on the degree of utilisation and the working radius, the
slewing speeds are automatically reduced to the maximum permissible lev-
els listed in the
lifting capacity table under the comments on slewing speed.
Switching
reduction off
You can only switch off the reduction if the slewing range type
Standard has
been entered.
• Select and confirm the symbol (2).
– Display symbol (1) – green.
– Warning message display (3) – blue.
The slewing speed is not reduced
automatically.
If the maximum permissible slewing speed
is exceeded, the buzzer tone sounds once
and the warning message (3) is displayed –
red.
H
The entered limitations for the power unit speed of the slewing gear are still
valid and the continuous speed reductions due to the working range limiter
are still active.
s
G
Risk of accidents due to excessive slewing speed!
Observe the specified maximum permissible slewing speeds. This prevents
the truck crane being subjected to excessive dynamic loads, which can lead
to damage to crane sections and the truck crane overturning. Always slow
down and accelerate the slewing movement slowly and avoid swinging
loads.
When reduction is switched off, you as crane operator are responsible for
a slewing speed that is suitable the current loading case.
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