Doosan DX140LC, Operation And Maintenance Manual

Page: 48 / 297

OP000596 Safety
1-42
Precautions with High-pressure Lines,
Tubes and Hoses
When inspecting or replacing high-pressure piping or hoses,
check that the pressure has been released from the circuit.
Failure to release the pressure may lead to serious injury.
Always do the following;
• Wear protective glasses and leather gloves.
• Fluid leaks from hydraulic hoses or pressurized
components can be difficult to see but pressurized oil
has enough force to pierce the skin and cause
serious injury. Always use a piece of wood or
cardboard to check for suspected hydraulic leaks.
Never use your hands or expose your fingers.
• Do not bend high-pressure lines. Do not strike
high-pressure lines. Do not install lines, tubes or
hoses that are bent or damaged.
• Make sure that all clamps, guards and heat shields
are installed correctly to prevent vibration, rubbing
against other parts, and excessive heat during
operation.
– If any of the following conditions are found,
replace the part.
– Damage or leakage from hose end.
– Wear, damage, cutting of covering, or exposure
of strengthening wire layer.
– Cover portion is swollen in places.
– There is twisting or crushing at movable parts of
hose.
– Foreign material is embedded in the covering.
– Hose end is deformed.
NOTE: Refer to “Hose In-service Lifetime Limit
(European Standard ISO 8331 and
EN982 CEN)” on page 4-59, for additional
European regulations.
X
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HDO1045I
Figure 43