Crane operation
11.3 Crane operation with main boom
Operating Manual GMK6300L 3 112 xxx en 11 - 61
xx.xx.xxxx
Lifting limit switch override
When overriding, the shutdown of the lifting limit switch is cancelled and
the crane operation is no longer completely monitored;
à Overriding RCL
or lifting limit switch for rigging work
, p. 11 - 44.
Lowering limit
switch
The lowering limit switch (1) prevents the hoist rope from being reeled
completely off the drum.
The lowering limit switch works only if the switch-off point is set correctly
(e.g. after changing a hoist rope);
à Maintenance Manual.
G
Risk of accidents if the lifting limit switch is overridden!
You may override the lifting limit switch only if this is specified in the oper-
ating instructions for carrying out maintenance or rigging work.
With the lifting limit switch overridden, you may drive only at the minimum
speed and without a load.
G
Risk of accidents due to gaps in monitoring!
If the lifting limit switch is overridden, crane operation is no longer com-
pletely monitored.
When hoisting the lifting limit switch weight, the crane movement will be
stopped once. After moving the control lever again, the crane movement
will again be enabled and will not be switched off again.
G
Risk of accidents due to incorrect setting or intended triggering!
Prior to operating the crane, ensure that the lowering limit switch is set cor-
rectly and always complete the lowering operation before the lowering
limit switch is triggered.
This prevents the hoist rope from becoming damaged due to complete
unreeling or switching off at high speeds, and the load being dropped as a
result.
G
Risk of accidents due to adjustments made to the lowering limit switch!
Always re-adjust the lowering limit switch if you unreel hoist rope from the
stationary rope drum. The lowering limit switch does not record the
number of these winds.
This prevents the lowering limit switch from switching off too late or not
switching off at all, the hoist rope from being damaged and the from load
being dropped.
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