6 Pre-Operation Inspection and Calibration Verification
Before operating the crane, the following electrical connections must be checked to ensure
that the system is properly connected for the crane configuration.
Check that the weight of the anti-two block switch is properly installed on the main hoist
load line. The hoist line runs through the anti-two block weight. With even parts of hoisting
line, the weight must be attached to the dead-end line. With odd parts of hoisting line, the
weight shall be attached to the line of lowest speed.
After the electrical connections have been checked to insure that the system is properly
connected for the crane configuration, the following checks shall be made:
1. Check the electrical wiring connecting the various parts of the system for physical
2. Check the anti-two block switch and weight for free movement.
3. Check the spring-loaded cable reel to be sure it is free to rotate, has tension and the
cable is reeled properly.
The following tests shall be performed with care to prevent damage to the
machine or injury to personnel. Proper functioning of the system requires
successful completion of these tests before operating the machine.
If the operator cannot see the load handling device approaching the boom nose, he
shall have an assistant (signal person) watch the load handling device. The operator
shall be prepared to stop the machine immediately should the LMI system not function
properly as indicated by lighting the red warning light (4), sounding the audible alarm
(12) and locking the crane movements, hoist up, telescope out and boom down (see
Page G-10 for location
of these components