Manitowoc MLC300 User Manual

Manitowoc Published 11-20-19, Control # 234-19 3-73
MLC300 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
1
3
Load Drum Operation (without free fall or with
free fall disabled)
The location of the load drum handles varies depending on
the crane’s configuration. Refer to Drum and Control Handle
Identification on page 3-54.
1. Select the correct capacity chart and crane configuration
using the RCL/RCI Display. For detailed instructions,
see the RCL/RCI Operation Manual.
2. Load drum speed can be adjusted between 25% and
100% to meet operator needs. See the Speed and
Limits Screen topic in the Main Display Operation
Manual for detailed instructions.
3. If not previously done, perform the crane Startup
Procedure. See page 3-63
.
4. Turn off the drum park switch for the drum to be
operated.
For TANDEM drum operation turn off the drum park
switch for both drums.
NOTE In the TANDEM drum configuration:
• With both tandem drums unparked, the left handle
on the right console (Figure 3-21
) controls both
drums simultaneously and automatically adjusts
speed to keep the load block level. A T appears in
the drum identifier.
• With both tandem drums unparked, the middle
handle on the right console controls the drum that
is configured for the right side boom point sheaves
(Figure 3-22
) independently if needed. Doing this
will activate a fast beeping signal in the cab. The
drum identifier will indicate the number of the drum
that is configured for the right side boom point
sheaves.
• If the drum that is configured for the right side
boom point sheaves is parked, the left handle on
the right console controls the drum for the left side
boom point sheaves (Figure 3-22
) independently
if needed. The drum identifier will indicate the
number of the drum that is configured for the left
side boom point sheaves.
5. Increase the engine speed to the desired RPM with the
hand throttle. Press the foot throttle to momentarily
increase the engine speed when more power is
required.
6. If equipped with free fall brake pedals, the pedals can be
latched down.
7. Pull the drum control handle BACK from OFF to RAISE
the load.
Push the drum control handle FORWARD from OFF to
LOWER the load.
8. As the load nears the desired position, slowly move the
drum control handle toward OFF to slow down the load.
9. Then release the control handle to OFF to stop the load
when it reaches the desired position. The drum brake
will apply to hold the load in position.
10. To hold the load in position for long periods, turn on the
drum park switches.
WARNING
Falling Load Hazard
Prevent load on unused drums from falling. Turn on drum
park switch for drums not in use.
CAUTION
Avoid Boom or Luffing Jib Damage
Do not turn on the drum park switch while raising or
lowering the load; the brake will bring load to an abrupt
stop. This action could cause shock load damage to
boom, luffing jib, and load line. Bring the load to a smooth
stop with the drum control handle and then turn on the
drum park switch.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English