OP001759
1-37
Safety
Welding Repairs
When carrying out welding repairs, carry out the welding in a
properly equipped place. The welding should be performed by a
qualified worker. During welding operations, there is the danger
of, generation of gas, fire, or electric shock, so never let an
unqualified worker do welding.
The qualified welder must do the following:
• To prevent explosion of the battery, disconnect the
battery terminals and remove batteries.
• To prevent generation of gas, remove paint from the
location of the weld.
• If hydraulic equipment, piping or places close to them
are heated, a flammable gas or mist will be generated
and there is a danger of it catching fire. To avoid this,
never subject these places to heat.
• Do not weld on pipes or on tubes that contain
flammable fluids. Do not flame cut on pipes or on
tubes that contain flammable fluids. Before you weld
on pipes or on tubes or before you flame cut on pipes
or on tubes, clean the pipes or tubes thoroughly with
a nonflammable solvent.
• If heat is applied directly to rubber hoses or piping
under pressure, they may suddenly break, so cover
them with a fireproof covering.
• Wear protective clothing.
• Make sure there is good ventilation.
• Remove all flammable objects and provide a fire
extinguisher.
Warning for Counterweight and Front
Attachment Removal
FG000371
Figure 36
DANGER
DOOSAN warns any user, that removal of the counterweight
from the machine, front attachment or any other part, may
affect the stability of the machine. This could cause
unexpected movement, resulting in death or serious
injuries. DOOSAN is not liable for any misuse.
Never remove counterweight or front attachment unless the
upper structure is in-line with the lower structure.
Never rotate the upper structure once the counterweight or
front attachment has been removed.
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