Doosan DX225LC, Manual

Page: 76 / 136

Electrical System
Page 75
SP000935
If the machine is idling without the controls being operated or is
waiting for a dump truck the engine speed is automatically
lowered. Once the controls are operated and work is being
started the machine will be restored to the previous settings. As
a result, noise and fuel consumption will be reduced. This
function can be selected or canceled through the Auto Idle
Selector Switch on the instrument panel.
The initial setting at start-up is with this switch in the select
position. Approximately 4 seconds after this function is selected,
if all work levers are in the neutral position, the e-EPOS
controller compares the automatic reduction signal with the
signal set by engine control dial. The lower of the two signals is
selected, the e-EPOS controller sends a signal to the engine
controller to control the engine speed.
The neutral status of the machine is detected by the two
pressure switches in the control valve. When the work levers are
in the neutral position, the switch is in the "OFF" position.