Rigging work
12.8 Rigging the auxiliary hoist
Operating manual GMK 6400 3 112 993 en 12 - 107
12.07.2013
12.8.13 Permissible applications for the auxiliary hoist
The auxiliary hoist may be used:
– As a replacement for the main hoist;
à p. 12 - 107,
– During alternating operation with main hoist and auxiliary hoist on the
main boom;
à p. 12 - 108,
– For permissible work with the lattice extension;
à Lattice extension oper-
ating instructions
.
The following use of the auxiliary hoist is not permitted:
– Two-hook operation on the main boom head is not permitted,
– Impermissible work with the lattice extension;
à Lattice extension operat-
ing instructions
.
Replacement for
the main hoist
The auxiliary hoist may be used as a replacement for the main hoist:
– For main boom operation,
– For operation with the lattice extension;
à Lattice extension operating
instructions
,
• To do so, reeve the auxiliary hoist rope in the same way as the main hoist
rope;
à Reeving and unreeving the hoist rope.
•
Attach the lifting limit switch and the lifting limit switch weight exactly as
for operation with the main hoist;
à Installing/removing the lifting limit
switch
, p. 12 - 126.
H
The auxiliary hoist is arranged with a lower rope pull (104 KN/10,6 t
[23 370 lbs]) than the main hoist ( 110 KN/11.2 t [27 600 lbs]).
This means that a correspondingly high number of falls must be reeved, so
that the same load can be lifted as with the main hoist.
H
If you run the auxiliary hoist rope over the left head sheave, you must
extend the main boom to a total length of at least 21 m (69 ft) before lifting
a load. Otherwise, the rope angle would exceed the maximum permissible
value.
s
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