OP001012
1-23
Safety
Attachment Precautions
Option kits are available through your dealer. Contact
DOOSAN
for information on available one-way (single-acting) and two-way
(double-acting) piping / valving / auxiliary control kits. Because
DOOSAN
cannot anticipate, identify or test all the attachments
that owners may wish to install on their machines, please
contact
DOOSAN
for authorization and approval of attachments,
and their compatibility with optional kits.
Accumulator
The pilot control system is equipped with an accumulator. For a
brief period of time after the engine has been shut down, the
accumulator will store a pressure charge that may enable
hydraulic controls to be activated. Activation of any controls may
enable the selected function to operate under force of gravity.
When performing maintenance on the pilot control system, the
hydraulic pressure in the system must be released as described
in “Handling of Accumulator” on page 4-74.
The accumulator is charged with high-pressure nitrogen gas, so
it is extremely dangerous if it is handled in the wrong way.
Always observe the following precautions:
•
Do not drill or make any holes in the accumulator or
expose it to any flames, fire or heat source.
•
Do not weld on the accumulator, or try attaching
anything to it.
•
When carrying out disassembly or maintenance of
the accumulator, or when disposing of the
accumulator, the charged gas must be properly
released. Contact your
DOOSAN
distributor.
•
Wear safety goggles and protective gloves when
working on an accumulator. Hydraulic oil under
pressure can penetrate the skin and cause serious
injuries.
Engine Ventilation
Engine exhaust gases can cause loss of judgment, loss of
alertness, and loss of motor control. These gases can also
cause unconsciousness, serious injury, fatal accidents and
death.
Make sure there is adequate ventilation before starting the
engine in any enclosed area.
You should also be aware of open windows, doors or ductwork
where exhaust may be carried, or blown by the wind, exposing
others to danger.
ARO1770L
Figure 13
Summary of Contents for DL220
Page 2: ......
Page 6: ...950106 00117E Table of Contents IV ...
Page 7: ...950106 00117E I I Presentation 1Presentation PRESENTATION FG015573 Figure 1 ...
Page 17: ...OP001012 1 5 Safety 1 3 12 6 4 11 5 9 10 8 3 7 10 9 4 6 2 FG015631 Figure 1 ...
Page 62: ...OP001012 Safety 1 50 ...
Page 112: ...OP001013 Operating Controls 2 50 CD Player Optional AST DIR FG000109 Figure 102 ...
Page 240: ...OP000040 Troubleshooting 6 8 ...
