Maeda MC285C-3, Operation Manual, Page: 7 / 314

Mini-Crawler Crane M A E D A Table of Contents
1/2019 MC285C-3 v
Operation in Emergencies ...................................................................................... 4-50
CRANE SAFETY DEVICES ............................................................................................. 4-51
Interlock Characteristics ......................................................................................... 4-52
Crane Operations ................................................................................................... 4-53
Crane Stowing Operations ..................................................................................... 4-53
CRANE OPERATION ...................................................................................................... 4-54
Before Crane Operation ......................................................................................... 4-56
Crane Operation Position ....................................................................................... 4-57
Accelerator Lever Operation ................................................................................... 4-57
Hook Raising / Lowering Operation ........................................................................ 4-57
Hook Raising / Lowering Procedure .................................................................. 4-59
Boom Lifting Operation ........................................................................................... 4-59
Safety Precautions ............................................................................................ 4-59
Boom Lifting / Lowering Procedure .................................................................... 4-59
Boom Telescoping Operation ................................................................................. 4-59
Safety Precautions ............................................................................................ 4-59
Boom Telescoping Procedure ........................................................................... 4-60
Slewing Operation .................................................................................................. 4-60
Safety Precautions ............................................................................................ 4-60
Slewing Procedure ............................................................................................ 4-61
Crane Stowing Operation ....................................................................................... 4-61
Safety Precautions ............................................................................................ 4-61
Stowing Procedure ............................................................................................ 4-61
MOMENT LIMITER (OVERLOAD DETECTOR) .............................................................. 4-63
Moment Limiter Features ........................................................................................ 4-63
Programmable Moment Limiter .............................................................................. 4-64
During Setup ...................................................................................................... 4-64
Moment Limiter Operation ...................................................................................... 4-65
Overload Alarm .................................................................................................. 4-65
Working Range Limits Device ............................................................................ 4-66
Over Winding Detector ...................................................................................... 4-66
Over-Unwinding Stop Device ............................................................................. 4-66
Number of Falls Change .................................................................................... 4-67
Outrigger Extension Detection ........................................................................... 4-67
Moment Limiter Error Display ............................................................................ 4-67
Prohibited Actions after Auto-Stop ......................................................................... 4-68
Recovery Operation after Auto-Stop ....................................................................... 4-68
Moment Limiter Display .......................................................................................... 4-70
Load Factor Display ........................................................................................... 4-71
Actual Load Display ........................................................................................... 4-71
Rated Total Load Display .................................................................................. 4-71
Boom Length Display......................................................................................... 4-71
Boom Angle Display .......................................................................................... 4-71
Maximum Lifting Height above Ground Display ................................................. 4-72
Working Radius Display ..................................................................................... 4-72
Slewing Angle Display ....................................................................................... 4-72
Boom Section Display ........................................................................................ 4-72
Number of Falls Display ..................................................................................... 4-72