Manitowoc Grove GMK 5250L Operating Instructions Manual page 504

Operating elements for crane operation
8.2 Brief description of the operating elements
8 - 110
High speed monitoring for the hoist
– On:
– Off:
à
p. 10 - 114
Lift/lower the hoist display
– Symbol (1): Raise
– Symbol (2): Lower
Warning for lowering limit switch shutdown
– Red: Lowering limit switch triggered – main hoist stop
– Grey: Lowering limit switch not triggered
à
p. 10 - 82
Warning for lifting limit switch shutdown
1 – On:
1 – Flashing:
1 – Off:
à
p. 10 - 82
Lifting limit switch override
2 – Press:
2 – Release:
High-speed mode on
High-speed mode off
Lifting limit switch triggered – movements which
increase the load moment stops
Button (2) pressed
Lifting limit switch not triggered and not bridged
Shutdown functions of the lifting limit switch
bridged
– Lamp (1) flashes
– Buzzer tone sounds
– Enable crane movements (move the control lever
to the initial position if necessary)
Shutdown functions of the lifting limit switch not
bridged
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