Manitowoc 2250 User Manual

Reference Only
OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-74
Published 06-24-16, Control # 241-01
SWING SPEED/TORQUE ADJUSTMENT
General
Swing speed and torque can be adjusted to suit the
operator’s needs.
Adjustment
See Figure 3-59 for the following procedure.
1. Stop swinging and apply the swing park brake (park
upper with the rocker switch on the control console).
2. Access the diagnostic screens as follows:
a. Depress the limit bypass button or turn the limit
bypass switch clockwise and scroll up (with the
selector next to the display screen).
b. Once step 2a is performed, scroll up at least one
screen, release the button or key, and scroll up or
down through the diagnostic screens until the Swing
Speed/Swing Torque screen appears.
3. Rotate the crane mode selector back and forth from the
CENTER position to the SELECT position until the
cursor (*) appears next to SWING SPEED.
4. Scroll up and down to change the swing speed to the
desired percentage between 25% and 100%.
5. Repeat step 3
and step 4 for swing torque.
6. Rotate the crane mode selector back and forth from the
CENTER position to the SELECT position until the
cursor (*) disappears.
The adjustment is complete. The selected swing speed
and torque will remain in computer memory, even after
the engine is stopped.
7. If desired, turn off the diagnostic screens:
a. Depress the limit bypass button or turn the limit
bypass switch clockwise.
b. Scroll down at least one screen and release the
button or switch.
Stopping the engine will also turn off the diagnostic
screens.
SWING LIMITER OPERATION
General
The swing limiter system is a safety device that allows the
operator to program how far the rotating bed can be swung
to the right and left. When the programmed limit is reached in
either direction, the programmable controller automatically
stops the rotating bed and prevents swinging past the
programmed limit. The operator can swing in the opposite
direction.
The system consists of the following components
(Figure 3-62
).
• Swing Sensor—This electronically monitors swing
speed and direction and sends corresponding electric
signals to the crane’s programmable controller.
• Crane Mode Selector—This is used to turn the swing
limits on and off.
• Digital Display—This contains the swing limiter
programming screens.
• Programmable Controller—This receives input signals
from the swing sensor and crane mode selector, and
controls the swing pump to stop the rotating bed and
hold it in position at the programmed swing limits.
• Limit Switch and Actuators—These apply the swing park
brake to stop the rotating bed if the programmed swing
limits fail for any reason.
Programming Swing Limits
Check the programmed swing limits daily at the start of
operation by swinging slowly to each limit. The rotating bed
should stop smoothly when either swing limit is reached.
1. Access the diagnostic screens on the digital display by
depressing the scroll up and limit bypass buttons at the
same time.
2. Scroll through the diagnostic screens until either of the
screens in Figure 3-60
appears.
* SWING SPEED
SWING TORQUE
100%
100%
FIGURE 3-59
Available
Speed or Torque
(25% to 100%)
Cursor
CAUTION
Operator Aid!
The swing limiter is a safety device designed to stop the
rotating bed (prevent boom or rotating bed from swinging
into jobsite obstructions) in the event that the operator
fails to stop the rotating bed from swinging in a normal
manner. Any other use of the swing limiter is neither
intended nor approved.

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English