Crane operation
10.5 Crane operation with main boom
10 - 84 3 302 633 en Operating Instructions GMK5250L
27.09.2017
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 due to incorrect setting or intended triggering!
Prior to operating the crane, ensure that the lowering limit switch is set
correctly 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 from incorrect setting of 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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