Komatsu ecot3 WA430-6 Operation & Maintenance Manual page 72

OPERATION
EXPLANATION OF COMPONENTS
During operation (engine running)
If the brake oil pressure goes down during operation, the brake oil pressure caution lamp and central warning lamp
light up and the alarm buzzer sounds intermittently.
At the same time, the top line of the character display displays "E03" and the bottom line displays "CHECK RIGHT
NOW" and "CALL" alternately for 3 seconds each, so stop the machine immediately in a safe place, stop the engine,
and carry out inspection.
If the brake oil pressure caution lamp lights up, the footbrake may not work. Keep the parking brake applied to
prevent the machine from moving.
In addition, when the accumulator is being charged immediately after starting the engine, the brake oil pressure
caution lamp will light up, but the central warning lamp remains OFF and the alarm buzzer does not sound.
Keep the parking brake applied to prevent the machine from moving until the brake pressure becomes normal and
the brake oil pressure caution lamp goes out.
ENGINE OIL PRESSURE CAUTION LAMP
This lamp (2) lights up to warn the operator that the engine
lubricating oil pressure has dropped.
During checks before starting (when the starting switch is turned to
the ON position but the engine is not started), this monitor does not
light up.
During operation (engine running)
If the engine lubricating oil pressure goes down during operation,
the engine lubricating oil pressure caution lamp and central
warning lamp light up and the alarm buzzer sounds intermittently.
At the same time, the top line of the character display displays "E03" and the bottom line displays "CHECK RIGHT
NOW" and "CALL" alternately for 3 seconds each, so stop the machine immediately in a safe place, stop the engine,
and carry out inspection.
BATTERY CHARGE CIRCUIT CAUTION LAMP
This lamp (3) lights up when the engine is running to warn the
operator that an abnormality has occurred in the charging circuit.
During checks before starting (when the starting switch is turned to
the ON position but the engine is not started), this monitor does not
light up.
During operation (engine running)
If an abnormality occurs in the charging circuit during operation,
the battery charge circuit caution lamp and central warning lamp
light up and the alarm buzzer sounds intermittently.
At the same time, the top line of the character display displays "E03" and the bottom line displays "CHECK RIGHT
NOW" and "CALL" alternately for 3 seconds each, so stop the machine immediately in a safe place, stop the engine,
and carry out inspection.
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