Auto-Idle - Hitachi EX1900-5 Operator's Manual

Hydraulic excavator
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AUTO-IDLE

With auto-ilde switch (1) turned on, approximately 4 sec-
onds after all control levers are returned to neutral, the en-
gine speed decreases to the auto-idle setting to save fuel
consumption. The engine speed will immediately increase
to the speed set by engine speed control lever (2) when any
control lever is operated.
CAUTION:
1. Always check if auto-idle indicator (3) is
turned on or off before starting operation. If
the indicator is on, the auto-idle function will
be activated.
2. Always be aware of engine speed control lever
(2) setting when auto-idle switch (1) is turned
on. If the engine speed is set high with engine
speed control lever (2), and if the operator is
not aware of the high engine speed setting,
the engine speed will unexpectedly increase
when any control lever is operated, causing
unexpected machine movement, thus possibly
resulting in serious personal injury.
3. Prevent the machine from unexpected move-
ment. Be sure to turn off auto-idle switch (1)
when unexpected machine movement is un-
desirable, especially when loading/unloading
the machine for transportation.
Note that auto-idle function can be turned on or off only
when the key switch is in ON position. Always check if the
auto-idle function is turned on or off with auto-idle indicator
(3).
Auto-Idle Function ON :
Auto-Idle Function OFF : Auto-Idle Indicator (3) OFF
• In order to deactivate the auto-idle function, simply
press auto-idle switch (1) when auto-idle indicator (3)
is turned on. Auto-idle indicator (3) will go out.
NOTE: When the engine speed set by the engine
speed control lever is lower than that of the
auto-idle level, auto-idle circuit will not work
even if auto-idle switch (2) is turned ON.
OPERATING THE MACHINE
Auto-Idle Indicator (3) ON
1
5-9
3
M18C-01-020
2

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