TM 5-3810-307-10
4.
Stay in the crane until the power company has been contacted and the
power source has been de-energized. NO ONE must attempt to come close
to the crane or load until the power has been turned-off.
Only as a last resort should an operator attempt to leave the crane upon contacting
a power source. If it is absolutely necessary to leave the operator station, JUMP COMPLETELY
CLEAR OF THE CRANE. DO NOT STEP OFF. Hop away with both feet together. DO NOT walk
or run.
Following any contact with an energized electrical source, the local, authorized
Grove Worldwide distributor must be immediately advised of the incident and consulted on
necessary inspections and repairs. Thoroughly inspect the wire rope and all points of contact on
the crane. Should the distributor not be immediately available, contact Grove Worldwide Product
support. The crane must not be returned to service until it is thoroughly inspected for any evidence
of damage and all damaged parts are repaired or replaced as authorized by Grove Worldwide or
your local Grove Worldwide distributor.
2-7.4
Special Operating Conditions and Equipment.
Never operate the crane during an electrical thunderstorm.
Working in the vicinity of radio frequency transmission towers and other
transmission sources may cause a crane to become "electrically charged".
When operating cranes equipped with electromagnets, you must take additional
precautions. Permit no one to touch the magnet or load. Alert personnel by sounding a warning
signal when moving a load. Do not allow the cover of the electromagnet power supply to be open
during operation or at any time the electrical system is activated. Shut down the crane completely
and open the magnet controls switch prior to connecting or disconnecting magnet leads. Use only
a non-conductive device when positioning a load. Lower the magnet to the stowing area and shut
off power before leaving the operator's cab.
2-8.
CRUSHING HAZARDS.
