Komatsu PC400LC-5 Operation & Maintenance Manual page 53

11. EXPLANATION OF COMPONENTS
11 .I.4
D: METER DISPLAY PORTION
PILOT DISPLAY
When the starting switch is ON, the pilot display lights up when
the display items are functioning.
METERS
1. ENGINE WATER TEMPERATURE GAUGE
This gauge indicates the engine cooling water temperature.
If the temperature is normal during operation, the green range will
light up.
If the red range lights up during operation, the overheat prevention
system will be actuated.
If the red range flashes, engine water temperature monitor @ flashes
and alarm buzzer sounds at same time, the overheat prevention
system will be actuated.
The overheat prevention system acts as follows.
When red range @ lights up:
The power mode switched to L mode for each working mode,
and engine water temperature monitor @ flashes.
When red range @ lights up:
Engine speed is lowered further to low idling, engine water
temperature monitor @ flashes and alarm buzzer sounds at the
same time.
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