Emergency Monitors - Komatsu PC450-8 Operation & Maintenance Manual

OPERATION

Emergency Monitors

If the monitor lights up red, stop the engine immediately or run at low idle, check applicable location, then
perform necessary actions.
These items should be observed while the engine is running. If there is a problem, the monitor for the abnormal
location lights up red and buzzer sounds, perform action immediately.
(1) Engine coolant temperature monitor
(2) Hydraulic oil temperature monitor
Engine Coolant Temperature Monitor
Monitor (1) warns operator that the engine coolant temperature
has risen.
If the engine coolant temperature becomes abnormally high,
the monitor shows abnormal display (C). The overheat preven-
tion system is automatically actuated and the engine speed
drops.
Stop operations and run the engine at low idling until monitor
(1) shows normal display (B).
Display (A) at low temperatures: Monitor background (D) is
white
Display (B) at correct temperatures: Monitor background (D) is
blue
Display (C) when condition is abnormal: Monitor background
(D) is red
CAUTION
(3) Engine oil pressure monitor
DETAILED CONTROLS AND GAUGES
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