Auto-Idle; Auto-Idle Function - Hitachi ZAXIS 120-6 class Operator's Manual

Hydraulic excavator
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Auto-Idle

Auto-Idle Function

When auto-idle switch (3) is turned to the A/I ON position,
approximately 4 seconds after all control levers are returned
to neutral, the engine speed decreases to the auto-idle
setting to save fuel consumption.
The engine speed will immediately increase to the speed
set by engine control dial (2) when any control lever is
operated.
IMPORTANT:
 Always check if auto-idle indicator (1) is turned ON or
OFF before starting operation. If indicator (1) is ON,
the auto-idle function will be activated.
 Always be aware of the setting of engine control
dial (2) when auto-idle switch (3) is turned to the
A/I ON position. If the engine speed is set high
with engine control dial (2), and the operator is not
aware of the high engine speed setting, the engine
speed will unexpectedly increase when any control
lever is operated, causing the machine to move
unexpectedly, possibly resulting in serious personal
injury.
d
WARNING: Prevent the machine from moving
unexpectedly. Be sure to turn auto-idle switch (3)
to the A/I OFF position when unexpected machine
movement is undesirable, especially when loading/
unloading the machine for transportation.
f
NOTE:
 Auto-idle control may not work completely until the end of
the warm-up.
 The auto-idle control function does not operate when the
aftertreatment device is regenerating.
OPERATING THE MACHINE
5-5
1
2
3
MDC1-01-314
MDCD-01-026

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