The LMI is an operational aid that warns a crane operator of approaching overload
conditions and of overhoist conditions that could cause damage to equipment and
The device is not, and shall not, be a substitute for good operator judgment, experience
and use of accepted safe crane operating procedures.
The responsibility for the safe crane operation shall remain with the crane operator who
shall ensure that all warnings and instructions in this manual supplied by the crane
manufacturer are fully understood and observed.
Prior to operating the crane, the operator must carefully and thoroughly read and
understand the information in this manual to ensure that he knows the operation and
limitations of indicator and crane.
The PRIMARY (i.e. cab-side) anti-two block switch must be used in ALL
Operations except operation of the Berminghammer pile driver system.
Simultaneous two-hoist working is prohibited in all circumstances other than
operation of the Linkbelt Pile Driver System.
Proper functioning depends upon proper daily inspection and observance of the
operating instructions set forth in this manual. Refer to Section 6. Pre-Operation
Inspection and Calibration Verification
of this handbook.
The LMI can only work correctly, if all adjustments have been properly set.
For correct adjustment, the operator has to answer thoroughly and correctly
all questions asked during the setup procedure in accordance with the real
rigging state of the crane. To prevent material damage and serious or even
fatal accidents, the correct adjustment of the LMI has to be ensured before
starting the crane operation.