User's Manual

17 LS420 Universal User Manual V2.91 2003-01-21.doc
b) A2B switch placement on a lattice crane.
On sheaves between 8” and 16” in diameter two mounting brackets are necessary to
permit both live end and dead end mounting.
For live end mounting: For dead end mounting:
For live end mounting on multiple sheave blocks with sheaves greater than 16” in diame-
ter, consult your service representative.
c) A2B switch placement when used on one part of line only (jib, rooster et.c.)
d) Fast line weight installation
Place the sensor mounting bracket directly below the sheave center as low or as close
to the edge of the sheave as possible. Place the auxiliary chain mounting bracket on the
opposite side of the sheave such that the chain hole is lined up opposite the pivot of the
sensor mounting bracket and such that the chain hole points down.
8” to 16”
diameter
Mount bracket 4” (10 cm)
below sheave center (see
shaded region of diagram).
8” to 16” diameter
Dead end pin
Mount bracket 4”
(10cm) forwards of
dead end pin.
Mount bracket 2” to 4”
below
sheave
center (see shaded region of diagram).
A2B switch mounting
bracket directly below
sheave center and as low
as possible.
Sheave center
Auxiliary chain
mounting
bracket.
Chain hole.
Fast line
weight.
A2B switch
mounting
bracket.