Charge Pressure Check - Manitowoc 18000 Operator's Manual

OPERATING CONTROLS AND PROCEDURES

Charge Pressure Check

See Figure 3-47 and Figure 3-51
The charge pressure line of the calibration screen indicates if
any charge pump is not within 275-400 psi (19-27 bar).
Charge pressure should be checked 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
• Every 6 months
To check charge pressure, proceed as follows:
1. Start and run engine at low idle.
2. Access calibration screen shown below as follows:
a. Turn LIMIT BYPASS switch clockwise and hold.
b. SCROLL UP at least one screen.
Binary
Number
1
2
4
8
16
32
64
128
3-76
for the following procedure.
PRESSURE SENDER CAL
CONTROL CAL
PUMP PRESSURE TEST
CHARGE PRESSURE
Charge Pump
(Bank 1)
Drum 1/3 (Main Hoist)
Not Used
Drum 2/5 (Main Hoist)
Accessory System
Drum 4 (Boom Hoist)
Drum 6 (Luffing Hoist)
Left Track
Right Track
Published 12-05-17, Control # 032-23
c. Continue to scroll up or down until calibration screen
appears.
d. The fourth line of the screen indicates charge
pressure:
- If 0 appears, all charge pumps are okay.
- If any number other than 0 appears, use
3-13 to determine which pumps have failed the
test.
- Each pump is assigned a number in the binary
system. Outputs that are ON (failed) for any
pump, are added together. To identify the failed
pumps, find the binary number displayed on the
screen in the first column of
shaded boxes to the right of the number
indicate pumps that have failed. Troubleshoot
the particular system to determine the cause of
the fault.
3. Proceed to next procedure, or exit calibration screen by
pressing bottom of CRANE MODE switch. Cursor (*) will
disappear from screen.
Bank 2 Binary
Bank 1 Binary
Number
Number
32 0
Binary Charge Pump
Number (Bank 2)
1 Swing Left
2 Swing Right
4 High Pressure Accessory Accumulator
18000 OPERATOR MANUAL
Table
Table 3-13. All
FIGURE 3-51