Doosan DX140LC Operation And Maintenance Manual page 23

While operating or traveling in places with poor visibility, and if it
is impossible to confirm the condition of the work site, or if an
obstacle is in the area around the machine, there can be a
danger that machine may suffer damage or operator or others
may suffer serious personal injury.
Inspect equipment and immediately report if there are problems
with the visual aids. If machine cannot be fixed immediately, DO
NOT use the machine. Contact your local DOOSAN distributor
as soon as possible and ask for repairs.
Guidelines
• If the visibility cannot be sufficiently assured, use a
flagman. The operator should pay careful attention to
the signals and follow the instructions of the flagman.
• Signals should only be given by one flagman.
• When working in dark places, turn "ON" work lights
and front lights on the machine. Set up additional
lighting in the area.
• Stop operations if there is poor visibility, such as fog,
snow, rain, or sandstorms.
• Check mirrors and rear view camera (optional) lens
on machine before starting operations. Clean off any
dirt and adjust view to ensure good visibility.
When operating or traveling during poor visibility conditions, and
especially in a large machine, strictly adhere to the above
guidelines.
NOTE: Refer to ISO 5006 for additional guidelines and
information.
It may not be possible to adjust all visual aids to see all the way
around the machine. Therefore, additional precautions must be
taken to ensure the safe operation of the machine.
NOTE: Larger machines are more likely to have blind spots.
NOTE: Refer to ISO 5006 for weight class information.
Safety
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OP001443