2.24 DO’S AND DON’TS DURING CRANE OPERATIONS • Always set the outriggers on level, solid ground when performing the crane operations. • Never perform travelling hoist or the crane operations without setting the outriggers. The machine will be unstable and overturn, leading to serious accidents. • See the cautions given in the Safety besides the do’s and don’ts in this section.
[1] DON’T OPERATE WITH SLEWING FORCE Drawing in or lifting the load with slewing operation is prohibited.
[2] DON’T OPERATE WITH DERRICKING FORCE Drawing in or lifting the load with boom derricking operation is prohibited.
[3] DON’T PULL SIDEWARD, DRAW IN OR HOIST DIAGONALLY Pulling sideward, drawing in, or hoisting diagonally applies unreasonable force on the machine. It not only damages the machine body, but is also dangerous. Never operate in these ways. The hook must come right above the centre of gravity of the load hoisted.
[4] DON’T OPERATE VIOLENTLY DURING OPERATION Do not operate the lever suddenly. Especially, the “slewing”, “boom lowering”, and “hook lowering” must be operated at low speed.
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