MINOR CHANGE MACHINE FAMILIARIZATION
2
Dynamic Acera 03/05 Rev. 05
Page 3-62
2.4 COMPONENT & CONTROLS NOMENCLATURE
The following information provides a brief description and
function of the components and controls of the KOBELCO
Dynamic Acera Hydraulic Excavators.
All personnel associated with this machine should read
and understand this information BEFORE beginning any
work with or on this equipment.
A. RIGHT HAND OPERATOR CONSOLE AND
MONITOR
A1. Key Switch– FIGURE 2.4A
The Key Switch is located on the right hand opera-
tor console and has 5 operating functions.
a.
“HEAT”– This position is used for starting the
engine in cold climates. See Section III.
“OFF”– When Key is turned to this position, the
engine stops and electrical power to the
machine’s electrical systems is stopped after
approximately 4 seconds.
“ACC”– With key in the “ACC” position only the
cigarette lighter, tuner and horn will have power.
“ON”– When Key is in the ON position, electri-
cal power is supplied to all the machine’s elec-
trical systems.
“START”– When key is turned to this position
electrical power is supplied to the starter sole-
noid causing the starter to start the engine. Af-
ter engine starts key should be released to go
back to the “ON” position.
A2. Throttle Potentiometer– FIGURE 2.4B
The throttle potentiometer is located on the right
hand operator console and controls engine RPM.
When the throttle potentiometer is rotated to any
position it increases or decreases engine rpm and
maintains engine at the programed RPM for that
particular position on the dial.
NOTE
1.
In operation, when the pilot pressure from the hand
and pedal control levers are not used for 1 sec, if the
position of the throttle potentiometer is higher than 1050
rpm, the auto accel actuates automatically and the en-
gine speed returns to 1050 rpm.
2.
When the throttle potentiometer is positioned lower than
the auto accel speed, the engine speed is maintained
to the throttle potentiometer position.
Proportional auto acceleration function:
With the attachment, swing, travel control lever or
control pedal operation, the engine speed returns
to the accel dial set position gradually according to
the respective operating pilot valve movement.
FIGURE 2.4A
FIGURE 2.4B
ACC
ON
START
HE
AT
OFF
KEY SWITCH
POSITIONS
YQ102KeySwitch
YQ102ThrottleControl
THROTTLE
POTENTIOMETER
NOTE
The proportional auto acceleration function can be acti-
vated by pressing the auto accel switch (
) located
on the monitor panel. When the proportional auto accel-
eration function is active, the red light indicator above this
switch is ON.
YQ102MonitorSwitches
Press the auto accel switch to cancel the proportional auto
acceleration function and the light indicator will turn OFF.