Komatsu SK818-5 Operation & Maintenance Manual page 69

C - GREEN WARNING LIGHT
LED on - This means that the safety bars are down and
therefore safety is ensured.
LED off - (With the red warning light coming on at the
same time) This means that the safety bars are not com-
pletely down and therefore the work equipment and the
travel function cannot be used.
The sounding of the acoustic alarm (buzzer) signals that the solenoid valve coil is jammed.
q
This alarm sounds even with the engine at rest and disconnected ignition key.
Be particularly careful in the following conditions:
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A) Safety bars lifted and temporary jamming of the valve. (The engine stops and the acoustic alarm
sounds).
Lower the work equipment to the ground (see "3.3.5 MACHINE CONTROLS"), get off the machine and
try to locate the trouble.
B) Coil jamming with engine off. (The acoustic alarm sounds).
Lower the work equipment to the ground (see "3.3.5 MACHINE CONTROLS"), get off the machine and
try to locate the trouble.
When the troubleshooting takes long, disconnect the negative pole (-) of the battery, in order not to de-
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plete it completely.
NOTE
The green leds (seat and bar) come on only if the operator has engaged all the safety locks and released the
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parking brake (red led on). The leds go out whenever the bar is lifted (servocontrols off); to reactivate the servo-
controls, seat in the driving position, lower the safety bar and press the parking brake push button (green and
red leds on).
C
CAUTION
INSTRUMENTS AND CONTROLS
RWA22390
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