LOAD KING 80-160, Operator'S Manual

Page: 168 / 369

168
80-160
Operating Instructions
Operating the Unit
Operator Shutoff Devices
Anti-Two-Block SYSTEM
Inspect all ATB switches found on the boom, jib and auxiliary sheave heads for damage. Check the
freedom of the counterweight attached to these switches; and also, that the counterweight is attached
around correct line of hoisting cable in the proper manner. Inspect all electrical connections and wires
as well as the entire length of cable attached to the cable reel and it’s connections for evidence of
excessive wear, damage or improper installation. Check spring loaded cable reel for proper tension and
to insure that reel is free to rotate. Verify visual and audible warning devices by lifting each of the
counterweights.
NOTE:
A warning light will appear on the dash mounted panel and an audible signal will be heard
when the switch is in the ON position.
RATED CAPACITY LIMITER
The RCL will indicate an overload condition with an audible alarm. All boom functions will be disabled
except boom retract, boom up, and winch down. Move the load into an acceptable condition to stop
alarms and continue normal crane operation. (See the relevant user manual section for further details).
STATE OF LOAD LIMIT DEVICE
On the exterior front of the operator’s cab are three load indicator warning lights (1), (2) & (3) showing the
load utilization as crane is in operation. Visual warning lights are displayed on Element VGA screen for
operator. When the crane’s prewarning range or overload range is reached an audible warning buzzer
or a warning buzzer and siren are activated as shown in chart below depending on the load condition.
Crane functions “STOP” when in the
Overload Range
(from 100%). The overload data is recorded.