5. 1 Safety warnings, signs
Working with the machine represents a risk of serious or fatal injury, which you as
the owner, machine operator or a member of the maintenance personnel can
counteract. You can avoid dangers and accidents by reading the various safety
instructions attentively on a regular basis, and by following them at all times. This
applies in particular to personnel who only work on the machine occasionally, e.g.
for setup or maintenance work.
The safety instructions are listed below. If you comply with these instructions
conscientiously, you can be sure to safeguard your own safety and the safety of
other people, and you will avoid causing damage to the machine.
The descriptions of work in this publication describe the necessary safety
precautions which must be taken to prevent people and the machine from being
exposed to hazards.
1.1 Safety advices and symbols
1.1.1 Designation of safety advices
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow
this symbol to avoid possible injury or death.
Tab. 1
The safety alert symbol appears always together with one of the following signal
words:
DANGER
WARNING
CAUTION
DANGER
indicates a hazardous situation which, if not
avoided, will result in death or serious injury
WARNING
indicates a hazardous situation which, if not
avoided, could result in death or serious injury
CAUTION
indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury
NOTICE indicates a hazardous situation which, if not
avoided, could result in property damages
Tab. 2
Designated use
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6. Safety warnings, signs
1.1.2 Other designations
Symbol Explanation
Note
indicates helpful advices and tips
Precondition
identifies a condition that must be met before the following steps can
be taken
Required action
identifies steps than must be carried out
Result
identifies the result of a step
– Enumeration
identifies individual items in a list
Tab. 3: Symbols
1.2 Additional rules and guidelines
Following these notes does not invalidate the requirement to comply with
additional rules and guidelines!
Additionally, it is necessary to comply with:
– The safety rules applicable in the place of use
– Statutory “rules of the road”
– Directives issued by employers' professional liability insurers
1.3 Designated use
The hydraulic excavator is a machine with a working implement (e.g. backhoe
bucket, grapple, front shovel) for loosening, picking up, transporting and dumping
soil, stones and other materials in which the load is predominantly transported
without displacement of the machine. If the machine is to be moved when carrying
a load, this must be done in accordance with the technical safety instructions (see
the "Notes on safe working" section).
Machines for load-lifting work are subjected to particular conditions and must be
provided with the prescribed safety devices (see "Load-lifting work" section).
Machines used underground (mining and tunnelling) in a non-potentially explosive
atmosphere must be equipped with technologies for reducing exhaust emissions
(e.g. diesel particulate filter). The requirements of individual countries must be
complied with in this case.
Special applications such as demolition work or loading/unloading operations
require special equipment and possibly special safety devices. This equipment
(e.g. tree grapple, demolition hammer, concrete shear, etc.) is only allowed to be
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Safety warnings, signs
Signs on the machine
mounted and used with the approval of and in accordance with the conditions of
the manufacturer of the basic machine.
Any other use or use beyond what is defined here shall be regarded as not in
accordance with the designated use. Use not in accordance with the designated
use includes e.g. transporting people or working in a potentially explosive
atmosphere or a contaminated area.
Compliance with the operating manual as well as the inspection and maintenance
manuals also forms part of the designated use.
The manufacturer is not liable for damage attributable to use not in accordance
with the designated use. The user bears sole responsibility.
1.4 Signs on the machine
1.4.1 Warning signs
Non-observance of the warning signs! Consequence may be severe injuries or
death!
Check that all warning signs are in place and are legible.
Replace immediately signs that are missing or illegible.
“Safety belt” sign
Fig. 9: “Safety belt” sign
Put on the safety belt before taking the machine into operation.
“Hazardous area” sign
DANGER
8. Fig. 1 Mounting of standard clamping nut
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9. Fig. 2 Mounting clamping nut with fine thread
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10. Fig. 3 Mounting clamping nut at suspension with swing brake
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18. Fig. 1 Components of a differential cylinder (example)
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19. Fig. 2 Components of a shock absorber without small parts (example)
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20. Tab. 1 Corrosion inhibitor recommended by Liebherr
Fig. 3 Parts of hydraulic cylinder at risk from corrosion (with coloured background)
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