PUMP GP-MAIN HYDRAULIC 5242648 - Caterpillar

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During the calibration procedures, voltages up to 600 V are present in the control panel.Do not short the terminals to ground with any part of the body or any conductive material. Loss of life or injury could result from electrical shock or injury from molten metal.
Table 1
Required Tools    
Part Number    Description    
146-4080     Digital Multimeter    
OR    
9U-7330     Digital Multimeter    
Place the keyswitch in the BYPASS position.
Secure the system. Verify that all the high voltage inputs to the system are open. Ensure that the flywheel is at zero rpm.
Remove the lower sheet metal panel and the panel for the System I/O Interface Board. The panel for the System I/O Interface Board is located in the lower left corner of the cabinet.
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(1) Serial Terminal "J1"
Connect a PC to the RS-232/RS-485 port ("J1"). The port is located on the bottom back corner of the system's I/O board. This must be accomplished prior to the application of high voltage to the system.
Close the high voltage inputs to the system. The system will start. The system will remain in "Bypass". The PC should be communicating with the system.
Click on "Enter Password" menu option in order to view the "Enter User Name / Password" dialog box.
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The "Enter User Name / Password" dialog box
Enter a valid "User Name" and then enter a valid "Password".After the password has been entered, the menu options will change. The menu bar will contain a "Calibrate" option.
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The "Calibrate" drop-down menu
Click on the "Calibrate" drop-down menu.
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The "Calibration of a channel" Window
Select the "AC Voltages" option. A "Calibration of a channel" window will appear.
Click on the "View Status" button in the "Calibration of a channel" window.
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"Calibration Group Status" window
A "Calibration Group Status" window will open. Click on the "USE DEFAULTS" button on the "Calibration of a channel" window.
You are prompted to enter "Voltage in Ph. A".
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(1) Ground Terminal (2) Output Terminals (3) Neutral Terminal (4) AC Input Terminals
Measure the input voltage from a "Phase A" terminal to neutral.
Enter the value from Step 13 in the "Enter the value" field of the "Calibration of a Channel" window.
Click on the "OK" button. When you depress the "OK" button,