LSI GS550 User Manual

34 The GS550 System
3. Chain length adjustment № 1 – minimum boom angle
a. At minimum boom angle, with no additional weight on the hook block and one part of
line only, lift the boom just enough to have the hook block suspend and clear the sensor
chain and weight.
b. Hoist slowly until the red two-block warning lights comes on and the buzzer sounds.
Note the hoisting distance remaining; this distance must be great enough to allow the
operator and the lockout system, if installed, to prevent a two-block event. If necessary,
add lightweight chain between the sensor and weight to increase warning distance. If
still insufficient, contact your service representative.
Mount bracket directly below sheave
centre as low as possible.
Fast line mounting bracket
Chain hole
Anti-two-block switch
mounting bracket
Fast line weight
Boom base →
Front view
Figure: Fast line weight installatio
n
A) Anti-two-block
switch triggers
two-block alarm
B) Hook block stops rising,
two-block prevented with
safety margin
Figure: Ant
i
-
tw
o
-
block weight chain length test at minimum boom angl
e
Figure: Ant
i
-
tw
o
-
block weight chain lengt
h
SkyAzúl, Equipment Solutions
www.skyazul.com
301-371-6126

LSI GS550 Specifications

General

Brand	LSI
Model	GS550
Category	Monitor
Language	English