Komatsu ecot3 PC300LC-8 Shop Manual page 281

10 Structure, function and maintenance standard
5. Auto-warm-up and overheat prevention function
Function
q The engine automatic
increases the engine speed to warm up the
engine if coolant temperature is too low after
the engine starts.
q The overheat prevention function reduces the
pump load when coolant or hydraulic oil tem-
perature is too high during operation to protect
the engine from overheating.
PC300, 350-8
warm-up function
SEN01998-05
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