Manitowoc MLC300 User Manual

Manitowoc Published 11-20-19, Control # 234-19 4-139
MLC300 OPERATOR MANUAL SETUP AND INSTALLATION
3
1
4
Lower Live Mast to Transport Position
See Figure 4-93 for the following procedure.
.
1. If not already done:
a. Turn on the setup remote control.
b. Select the Liftcrane Mast Handling Capacities Chart
in the RCL/RCI display.
2. Verify that the mast-assist arms (2) are fully raised.
When the SETUP MODE is ON, the following will occur
if you attempt to raise the live mast when the mast assist
arms are down:
• The boom hoist will not operate.
• The hazard warning will come on and
the MAST ASSIST ARMS DOWN icon
will appear in the fault bar of the Main
Display Working Screen.
• Make sure the mast assist arms are fully raised
before raising the mast.
3. During the lowering procedure, monitor the MAST
ANGLE in the crane status information bar of the Main
Display Working Screen.
4. Increase engine speed to the desired RPM.
5. BOOM UP with the boom control handle to raise the live
mast (1).
Once contacted by the mast, the mast-assist arm
cylinders (2) will retract automatically.
6. Make sure the lifting (4) is aligned with the storage
bracket (5):
a. If necessary, jog the self-erect cylinder switch on the
remote control or the drum control handle in the cab
to relieve the pressure in the cylinder.
b. Then, using the lifting link, rotate the cylinder rod by
hand to align the pin with the storage bracket.
7. Boom up until the mast is vertical (90°).
8. Slowly retract the self-erect cylinder (3, View A) until the
storage pin (4) fully engages the storage bracket (5).
9. Continue to boom up to lower the live mast to the
transport position.
10. The mast will stop lowering automatically when it is at 2°.
The hazard warning will come on and the
MAST AT 2° icon will appear in the fault bar
of the Main Display Working Screen.
11. Using the mast-assist arms switch on the remote
control, lower the mast the remainder of the way to the
transport position (0°).
WARNING
Falling Mast Hazard!
Prevent the mast from falling over backwards or forward:
• Do not raise mast to 115° until the mast-assist arms
(2) are fully raised.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English