Operating Instructions - Doosan DX380LC-7K Operation And Maintenance Manual

Operating Instructions

Engine Speed Control
Engine speed can be manually adjusted using the engine speed
control dial. Increase engine speed by rotating the control knob
clockwise. Decrease engine speed by rotating the control knob
counterclockwise.
The engine speed control system has been set at the
factory and should not require adjustment as part of routine
maintenance.
Emission Control System
This machine is equipped with an engine exhaust emission
control system that meets applicable engine EU exhaust
emission regulations. The owner/operator is responsible for
proper operation and maintenance of the emission control
system as provided in this manual and the emissions-related
warranty provisions. The system provides a warning if there are
faults in the Selective Catalytic Reduction System (SCR) system
or if the level of reductant in the reductant tank is too low. For
example, if doser cooling is not working, the engine torque is
reduced.
Low Level DEF
The engine resumes normal torque after reductant has been
filled to a level of at least 20%.
DEF Quality / Dosing Error
Once the fault has been corrected and the engine control unit
received indication that it is working, engine torque returns to the
normal level.
If the engine torque was reduced to 0% (low idling), the
engine control unit will not detect that SCR system is
functioning. Reset the system so normal torque is available.
Operation
3-18
NOTICE
NOTICE
n min
Figure 24
DS1900273
DX380LC-7