OPERATING CONTROLS AND PROCEDURES MLC650 OPERATOR MANUAL
3-50
Published 08-12-19, Control # 224-13
Crane Out of Level
This limit stops the rotating bed jacks and prevents further jacking with the ALL jacking function of the
remote control if the rotating bed is out of level the following amount:
• 4-1/2° from side to side.
• 3° from front to rear.
The amber warning light on the remote control will come on.
Level the rotating bed with the INDIVIDUAL jacking function of the remote control.
Function Diverted
This limit prevents the selected crane function from being operated if hydraulic oil is being diverted away
from the circuit. Park the function that the hydraulic oil is currently being diverted to. See Operation of
Diverting Circuits on page 3-27.
Function Parked
This limit prevents the selected crane function from being operated until the park switch is turned off (un-
parked).
Gantry Down
With the Setup Mode ON, this limit stops the mast if the gantry is down during the following operations:
• Booming down with the mast above 70°.
• Booming up with the mast below 113°.
With the Setup Mode OFF, this limit stops all booming when the gantry is down.
WARNING
Falling Boom!
Do not operate the live mast or the boom until the gantry is properly raised and pinned. Structural damage
could result, possibly causing the boom and luffing jib to collapse.
See Section 4 of the MLC650 Operator Manual for gantry raising instructions.
Inactive Control Station
This limit applies only to cranes meeting CE requirements.
This limit prevents the cab controls from being operated when the remote control is being operated.
The remote control has priority. Therefore, if the cab controls are being operated and the remote control
becomes active, the cab controls will be disabled.
Luffing Jib Maximum Down 1 (minimum working angle)
This programmed limit stops the luffing jib from lowering when the boom-to-luffing jib angle is 70°.
• The luffing jib can be raised after this limit is reached.
• The limit bypass switch must be turned to the bypass position to lower the jib to the Luffing Jib
Maximum Down 2 limit.
Operating Limit Icon
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