Manitowoc 2250 User Manual

Reference Only
OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-46
Published 06-24-16, Control # 241-01
Clamshell Operation—Independent Drums
General
This topic describes clamshell operation for cranes equipped
with independent drums.
These instructions replace the clamshell instructions in
Clamshell Operation—Standard on page 3-39
.
See Figure 3-27
for identification of the clam controls and
drums.
Operating Options
There are only two ways to operate in Clamshell mode. The
difference between the two is in how the bucket is opened:
• Confirm Clamshell mode for Option A
• Confirm Clamshell mode and drum 1 Free Fall mode for
Option B
NOTE: See the instructions in Clamshell Operation—
Standard on page 3-39 for selecting and confirming
modes.
The Clamshell mode (and all other modes on
cranes with independent drums) will show ON after
the name of the mode when confirmed. All inactive
modes will show OFF.
Option A—Full Power Open
The bucket is powered open by pushing the left handle
forward.
FIGURE 3-27
Right
Brake Pedal
Left
Brake Pedal
Closing Line
Drum
Holding Line
Drum
Swing and
Boom Hoist
Handle
Close
Bucket
Lower
Bucket
Right
Handle
Raise
Bucket
Open
Bucket
Left
Handle
Crane
Mode

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English