Manitowoc 2250 - Calibrating the Controls

Reference Only
Manitowoc Published 07-19-16, Control # 249-01 2-11
2250 SERVICE/MAINTENANCE MANUAL HYDRAULIC AND AIR SYSTEMS
2
Calibrating the Controls
The controls must be calibrated at the following instances
and/or intervals:
• Replacement of a pump
• Replacement of a pump control (EDC or PCP)
• Installation of a new programmable controller
• Installation of a new CPU board
• When there is a noticeable increase in the time it takes a
crane function to engage when the handle is pulled back
from OFF
• Every six months
To calibrate the controls, proceed as follows.
1. Access the diagnostic screens by pressing the Limit
Bypass switch while scrolling up with the scroll switch.
2. Scroll until the Control Calibration screen appears
(Figure 2-13
).
3. Increase engine speed to high idle and press the Limit
Bypass switch.
NOTE: It is normal for the yellow Operating Limits light to
come on during this procedure.
The calibration process does not start if the engine is not
at high idle. The calibration process stops if engine
speed is decreased during calibration. In either case, the
screen shown in Figure 2-14
appears.
4. Repeat step 3
if engine speed is decreased during
calibration.
5. When the calibration process starts, the Percentage of
Completion screen appears (Figure 2-15
). It takes
approximately two minutes to complete this process.
6. When calibration is complete, the Start screen appears
(Figure 2-13
).
7. Check the data bank in the upper right corner of the
screen. If a control/pump failed the test, the fail item’s
binary numbers are displayed.
Table 2-12. Controls Binary Numbers
FIGURE 2-13
CONTROL CALIBRATION
BYPASS TO BEGIN
Binary
No.
Pump
No.
Description
11Main Hoist
2 2 Boom and Luffing Drums
4 3 Swing Right
8 3 Swing Left
16 4 Drum 9 on MAX-ER
FIGURE 2-14
CONTROL CALIBRATION
HIGH IDLE REQUIRED
FIGURE 2-15
CONTROL CALIBRATION 6
___% COMPLETE