Komatsu H75051 Operation & Maintenance Manual page 129

OPERATION
3.
When the set changeover time elapses, fan reverse rota-
tion pilot lamp (2) flashes and lights up.
If the condition for reversing the fan is not satisfied,
changeover condition waiting pilot lamp (3) lights up in red.
4.
The fan returns from the reverse rotation to the normal
when the set duration for the reverse rotation elapses.
Fan reverse rotation pilot lamp (2) flashes and then goes
out.
REMARK
If one of the following conditions is satisfied, the fan rota-
tion returns from reverse direction to normal direction.
• Turn off the automatic fan reverse mode.
• The set duration time for the automatic fan reverse
mode has elapsed.
• Stop the engine.
• The coolant temperature, boost temperature, or HST
oil temperature overheat (the caution lamp of the oil
temperature gauge or coolant temperature gauge on
the machine monitor lights up in red, then action level
"L02" is displayed) while the fan is rotating in reverse.
TRACTION LEVEL SELECTION
A suitable traction level in accordance with the operating condition can be selected according to the following
procedure.
EXPLANATION OF COMPONENTS
3-63