Doosan DX700LC Operation And Maintenance Manual page 29

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 of the
attachments that owners may wish to install on their machines,
please contact DOOSAN for authorization and approval of
attachments, and their compatibility with options 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 describe
in "Handling of Accumulator" on page 4-86.
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 any flame, 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,
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.
Indoor Ventilation
Engine exhaust gases can cause fatal accidents, and
unconsciousness, loss of alertness, judgement and motor
control and serious injury.
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
into which exhaust may be carried, or blown by the wind,
exposing others to danger.
Safety
or when disposing of the
Figure 12
ARO1770L
OP001120
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