Kato SR-300L, Instruction Manual

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WARNING
(8) Precautions when operating the crane near high-power
electromagnetic wave emitters
High voltages with painful and dangerous consequences can be
induced in the vicinity of radio and television transmitters and
radar stations. Contact the relevant authority before starting
work.
(9) Precautions against lightning strike
A crane operating with a long boom is prone to lightning strikes.
If thunder clouds approach, retract the boom and get out of the
crane.
(10) Work according to signals
Choose one person to be the signaler.
If the signaler does not signal appropriately with the sling
handler and other workers, the working efficiency will fall and
there is the risk of accidents. Before starting the job, the
controller, signaler, sling handler and other workers who are
involved should confer on signal procedures in order to work
safely and steadily under the direction of the signaler.
(11) Determine signals for joint operations
If two or more cranes are working together on a site, determine
the signaler and the signals in advance.