Komatsu 830E-AC Shop Manual page 434

NORMAL TRUCK SHUTDOWN PROCEDURE
1. Reduce the engine speed to idle. Move the
directional selector lever to PARK. Make sure that
the parking brake applied indicator light in the
overhead display panel is illuminated.
2. Place the drive system in the "rest" mode by
turning on the rest switch on the instrument panel.
Make sure that the rest mode indicator light in the
overhead display panel is illuminated.
3. Shut off the engine by turning the key switch OFF.
If the engine does not stop, use the emergency
shutdown switch on the center console.
4. Wait 90 seconds for the steering accumulators to
bleed down. Ensure
accumulators have bled down completely by
trying to turn the steering wheel.
5. Verify that the link voltage lights on the DID panel
in the cab are off. If they remain on for longer
than five minutes after engine shutdown, the
propulsion system must be inspected to find
the cause.
6. To ensure that the link will not be energized
during test and repair procedures, turn GF Cutout
Switch (2, Figure 3-1) in the control cabinet to the
CUTOUT position by pulling the switch out and
moving the switch downward as shown.
FIGURE 3-1. INFORMATION DISPLAY PANEL
1. Control Power Switch
2. GF Cutout Switch
3. Capacitor Charge Light
If there is any question whether the system has
potential hazardous voltage present, return to the
operator cab and perform the normal shutdown
procedure. Normal operation of the drive system at
shutdown should allow high voltages to be
dissipated.
E3-4
that the steering
AC Drive System Electrical Checkout Procedure
(Version 21 Software)
NOTE: In the event of a system failure, performing the
following procedure will ensure that no hazardous
voltages are present in the drive system.
SHUTDOWN AFTER SYSTEM FAILURE
1. Before shutting off the engine, verify the status of
the drive system warning lights on the overhead
display. Use the lamp check feature to verify
proper lamp function.
NOTE: The link voltage lights on the DID panel are not
lamp checked.
If any of the red drive system warning lights are on,
DO NOT attempt to open any cabinets, disconnect
any cables, or reach inside the retarding grid
cabinet even after shutting off the engine.
2. If all red drive system warning lights are off, move
the directional selector lever to PARK, shut off the
engine and chock the wheels.
3. After the engine has been off for at least five
minutes, inspect the link voltage lights on the DID
panel in cab. If all lights are off, the retarding
grids, wheel motors, alternator, and power cables
connecting these devices are safe to work on.
IF THE LINK VOLTAGE LIGHTS CONTINUE TO BE
ILLUMINATED AFTER FOLLOWING THE ABOVE
PROCEDURE, A FAULT HAS OCCURRED.
•
Leave all cabinet doors in place, do not touch
the retard grid elements,
•
Do not disconnect any power cables or use
them as hand or footholds.
•
Notify the Komatsu factory representative or
Distributor immediately.
10/06 E03018