4A - INFORMATION CENTER
21C SERIE WHEEL LOADERS TRAINING MANUAL PROGRAMMING THE INFORMATION CENTER Testing System Voltage The information center has the ability to allow you to view the system voltage without using a digital volt meter (DVM). The information center operates on a system voltage of 24 volts supplied by the two batteries located in the battery compartment. This will inform you of the condition of the batteries at initial power up of the information center This figure can be compared to the system voltage present on the guage display to decide if the problem exist with the batteries or the altenator. To test the system voltage do the following: 1 2 3 4 5
Up count
Down count
Program
Reset
Turn the key switch to the on position, do not start the machine. Advance to display field number 014 using the programming entry procedure listed previously. Press the Program/Reset switch back to the center position. The system voltage will be displayed. Press the Program/Reset switch to the Reset position to exit the monitoring mode. Turn the key switch to the off position.
Alarm Check The alarm can be checked to make sure that it is operating correctly. To check the alarm: 1 Turn the key switch to the on position, do not start the machine. 2 Advance to display field number 015 using the programming entry procedure listed previously. The alarm will begin to sound intermittently. 3 Press the Program/Reset switch back to the center position. The display will read 00 and the alarm will sound while the information center checks to see that all systems are normal. If an error is detected the display will read 01. The alarm will still sound intermittently. 4 Press the Program/Reset switch to the Reset position to exit the monitoring mode. 5 Turn the key switch to the off position. Coolant Level Check The machine coolant level can be checked by using the information center. To check the machine coolant level: 1 Turn the key switch to the on position, do not start the machine. 2 Advance to display field number 016 using the programming entry procedure listed previously 3 Press the Program/Reset switch back to the center position. The display will read 00 if the coolant level is normal. If the coolant level is low the machine will read 01 in the display. 4 Press the Program/Reset switch to the Reset position to exit the monitoring mode. 5 Turn the key switch to the off position. Brake Pressure Switch Check This will check the brake pressure switch to make sure that it is functioning properly. This same check will also show if the brake pressure indicator light is functioning. This test checks the wiring from the information center to the pressure switch. It does not check the wiring from the information center to the park brake pedal switch located on the brake pedal under the cab. To check the brake pressure switch: 1 2 3 4 5 6 7
Start the machine and allow it to run for 30 seconds to make sure the accumulators are fully charged. Turn the key switch to the on position, do not start the machine. Advance to display field number 017 using the programming entry procedure listed previously. The brake pressure light will flash intermittently. Press the Program/Reset switch back to the center position. You should see 01 in the display if the brake pressure is normal. Cycle the brake pedal several (30 ñ 40) times. You should see the 01 change to a 00 in the display indicating that the pressure is below normal. Press the Program/Reset switch to the Reset position to exit the monitoring mode. Turn the key switch to the off position Centre de formation
4A.15.00
