Maeda MC815C, Operation Manual, Page: 385 / 426

375
[12] Boom/Fly jib operation selector switch
Using this switch, you can switch between the main boom
and the fly jib operation during crane operations.
NOTES
If you are switched to the fly jib operation, you cannot perform
the extend/retract operation and the derrick operation at the
same time. Either of the preceding operation is executed.
[13] Rated total load display
The rated total load of the fly jib is shown when you touch
“RTL” on the monitor display.
Touch again to return to the original display.