| 摘要 |
PROBLEM TO BE SOLVED: To select one hand operation or two-hand operation according to necessity by a method wherein two-hand operation where operation is impracticable unless two hands are used and one-hand operation wherein operation is practicable by one hand are switched by a change-over switch to vary starting and operation of equipment. SOLUTION: During an automatic mode, a mode selector switch is automatically switched. When a right hand is used, by changing over an operation change-over key switch to the right, only a second starting button 28 on the right side is started. When a left hand is used, by changing over the operation change-over key switch to the left, only a first starting switch button 27 on the left side is started. During manual operation mode, the mode selector switch is switched to manual operation. When the operation change-over key switch is situated in the two positions and two-hand operation is effected, in such a state that the manual operation button 29 of a system rise operation part 12 is pressed by one hand, the manual operation handle of a control panel 11 is simultaneously operated to a given position by the other hand, and thus, operations by two hands are simultaneously carried out. |
