Manitowoc 18000, Руководство по техническому обслуживанию, Страница: 124 / 316

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HYDRAULIC SYSTEM 18000 SERIVCE/MAINTENANCE MANUAL
2-30
Published 12-05-17, Control # 035-23
Control Calibration
See Figure 2-23 and 2-25 for the following procedure.
The control line of the calibration screen indicates whether
the pump centers are within the allowable range of each
pump’s Electric Displacement Control (EDC). The allowable
range is 5-25% pump command signal for the hoist pumps,
and 2.5-20% in each direction for the swing pump.
The controls must be calibrated at the following intervals:
• When a new controller node is installed
• When a pump is replaced
• When a pump control (EDC or PCP) is replaced
• When there is a noticeable time increase to engage a
crane function when handle is moved from off
• Every 6 months
To perform control system calibration, proceed as follows:
1. Turn PARK ON for all crane functions (drums, boom
hoist, swing, travel).
2. Start engine. It is normal for yellow operating limits light
to come on during this procedure.
3. Access calibration screen as follows:
a. Select and confirm SETUP mode to activate
calibration program.
b. Turn LIMIT BYPASS switch clockwise and hold.
c. SCROLL UP at least one screen.
d. Continue to scroll up or down until calibration screen
appears.
e. Press bottom of CRANE MODE switch until (*)
appears next to CONTROL CAL.
f. Increase engine speed to HIGH IDLE.
Engine must be running at high idle before
calibration will start.
C a l i b r a t i o n w i l l s t o p i f e n g i n e s p e e d i s
decreased during calibration.
g. Press top end of CRANE MODE switch to
CONFIRM. Calibration will start.
h. When calibration starts, percent (%) of completion is
displayed on screen.
i. When calibration stops, check binary number:
- If 0 appears, all controls have passed
calibration.
- If any number other than 0 appears, use Table
2-11 to determine which controls have failed
calibration.
Each control is assigned a number in the binary
system (power of two). After running the
calibration procedure, outputs that are ON
(failed) for any control are added together. To
identify the failed controls, find the binary
number displayed on the screen in the first
column of
Table 2-11 . All shaded boxes to the
right of the number indicate controls that failed
calibration.
Refer to Figure 2-25 to identify the controls.
j. Troubleshoot the particular system to determine the
cause of the fault.
k. Proceed to next procedure, or exit calibration
screen by pressing bottom of CRANE MODE
switch. Cursor (*) will disappear from screen.
FIGURE 2-25
Binary
No.
Pressure Sender
1 Main Hoist 1
2 Main Hoist 2
4 Boom Hoist
8 Swing Left
16 Swing Right
32 Luffing Hoist
*
PRESSURE SENDER CAL
CONTROL CAL
PUMP PRESSURE TEST
CHARGE PRESSURE
0% 4
Percent
Complete
Binary
Number