WARNING: For reasons of safety, always follow these safety precautions. 7. PRECAUTIONS DURING OPERATION 7.6.2 PRECAUTIONS FOR LIFTING OPERATION PC450-ENG 1-20 GRADUAL LIFTING OPERATION • When carrying out lifting operations, run the engine at low idling and use the L.O. (lifting operation mode). • Avoid sudden lever shifting and acceleration. • Swing speed is three to four times that of movable cranes. Therefore, be especially careful when performing swing operation. GRADUAL LIFTING OPERATION NEVER LEAVE THE OPERATOR’S SEAT • Never leave the operator’s seat while lifting a load. NEVER CARRY OUT EXCESSIVE OPERATIONS • Operation exceeding machine performance may result in accident or failure.
• Carry out lifting operation within specified load limit. • Never carry out operations which may damage the machine such as overload or over-impact-load. • Never drag a load laterally or longitudinally, nor retract the arm, otherwise, a dangerous situation may result. INCORRECT INCORRECT NEVER CARRY OUT EXCESSIVE OPERATIONS NEVER TRAVELLING WHILE LIFTING A LOAD • Never travel while carrying a load. OPERATING POSTURE • If the machine posture is not correct, the wire ropes or ring may detach from the hook. Confirm that the hook angle is correct to avoid this.