Komatsu PC15MRX-1 Operation And Maintenance Manual page 59

OPERATION
EMERGENCY STOP ITEMS
If the monitor flashes, stop the engine immediately or run at low idling, then inspect the problem point
immediately and repair the problem.
These are items that should be watched when the engine is running. If any abnormality occurs, the monitor for the
problem point lights up and the buzzer sounds. Take action immediately.
(1)Engine Oil Pressure Monitor
ENGINE OIL PRESSURE MONITOR
If the engine lubricating pressure is below the normal value,
this monitor (1) lights up and the buzzer sounds. If it lights up,
stop the engine, and check the oil level in the oil pan and lubri-
cating system.
REMARK
While the starting switch is ON, the lamp will remain lit and
will go off once the engine is started.
When the engine is started or stopped with the starting
switch at the ON position, the lamp may light up and the
buzzer may sound momentarily, but this does not indicate
any abnormality.
CAUTION
(2)Charge Level Monitor
EXPLANATION OF COMPONENTS
3-5