Crane operation
11.3 Crane operation with main boom
Operating manual GMK 6400 3 112 993 en 11 - 59
12.07.2013
11.3.4 Auxiliary hoist
H
If you run the auxiliary hoist rope over the left head sheave, you must
extend a telescopic section to the middle fixed length before lifting a load.
Otherwise, the rope angle would exceed the maximum permissible value.
You can have the operating hours of the hoist displayed;
à p. 11 - 110.
Switching on the
auxiliary hoist
After the ignition is switched on, all of the power units will be switched off
and the lamps in the corresponding buttons will only light up dimly.
• Check whether the main hoist is switched off and therefore secured
against unintentional operation.
– The lamp in button (1) should light up only dimly.
– Symbol (2) must be red.
• Press the (1) button once.
– The lamp in button (1) will light up brightly.
– Symbol (2) is green when the auxiliary hoist is switched on.
s
G
Risk of accident when operating the auxiliary hoist
Read and observe all of the safety instructions in the section titled
Main
hoist
, p. 11 - 56 before operating the auxiliary hoist.
All safety instructions for the operation of the main hoist also apply to the
auxiliary hoist, along with the information in this section.
G
Risk of accident due to a damaged hoist rope
If you reeve the auxiliary hoist rope in addition to the main hoist rope, make
sure the hoist ropes do not rub against each other and that the auxiliary
hoist rope does not touch the rotating flanged wheel of the main hoist dur-
ing subsequent operation. Raise the main boom to at least 20° before lifting
loads.
This prevents damage to the hoist ropes that results in the ropes tearing.
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