Hilti PLT 300 Mode D'emploi page 19

2 Safety
2.1 Safety instructions
2.1.1 Basic information concerning safety
In addition to the safety rules listed in the individual sections of these operating instructions, the
following rules must be strictly observed at all times. The PLT 300 and its ancillary equipment may
present hazards when used incorrectly by untrained personnel or when used not as directed.
▶ Never use the PLT 300 and PLC 300 without having received the appropriate instruction on their
use or without having read these operating instructions.
▶ Always observe the operating instructions and warnings given in the applications displayed.
▶ Do not render safety devices ineffective and do not remove information and warning notices.
▶ Modification of the PLT 300 and PLC 300 or tampering with their parts is not permissible.
▶ To reduce the risk of injury, use only genuine Hilti accessories and ancillary equipment.
▶ Never point the PLT 300 or its accessories toward yourself or other persons.
▶ Keep laser tools out of reach of children.
▶ Check the accuracy of the PLT 300 before using it to make measurements.
▶ Use of setting-up / adjusting devices and equipment or operating procedures other than those specified
in these instructions may lead to exposure to hazardous radiation.
▶ Due to the principle employed, the results of measurements may be negatively affected by the
surrounding conditions. This includes, e.g. close proximity to equipment that generates powerful
magnetic or electromagnetic fields, taking measurements from unsuitable surfaces and use of
unsuitable reflectors.
▶ Measurements to plastic foam surfaces, e.g. polystyrene foam, to snow or to highly reflective surfaces,
etc. may result in incorrect readings.
▶ Measurements taken to surfaces with low reflectivity in highly reflective surroundings may be inaccurate.
▶ Measurements taken through panes of glass or other objects may be inaccurate.
▶ The measurement may be incorrect if the conditions under which the measurement is taken change
rapidly, e.g. due to people walking through the path of the laser beam.
▶ Do not point the PLT 300 or accessories toward the sun or other powerful light sources.
▶ Check the PLT 300 before taking important measurements or after it has been dropped or subjected to
mechanical effects such as impact or vibration.
▶ When switching distance measuring mode from prism measurement to reflectorless measurement, make
sure that no one can look into the lens of the PLT 300.
▶ The PLT 300 may not be used in the proximity of medical instruments.
▶ Use of the PLT 300 in the proximity of expectant mothers or persons with a cardiac pacemaker is
not permissible.
▶ Operation of the PLT 300 in the proximity of military installations, airports or radio astronomy
facilities is not permissible unless prior permission has been obtained.
▶ Keep the PLT 300 clean and dry at all times.
2.1.2 Proper preparation of the working area
▶ Secure the area in which you will be taking measurements. Make sure that the laser beam is not
directed toward other persons or toward yourself while setting up the PLT 300.
▶ Check that the tripod stands securely and that the PLT 300 is firmly attached to the tripod by the
mounting screw.
▶ Use the PLT 300 only within the defined application limits, i.e. do not take measurements from mirrors,
stainless steel surfaces or polished stone, etc.
▶ Observe the accident prevention regulations applicable in your country.
2.1.3 Electromagnetic compatibility
Although the tool complies with the strict requirements of the applicable directives, Hilti cannot exclude the
following possibilities:
• The tool may cause interference to other devices (e.g. aircraft navigation equipment).
• The tool may be negatively affected by powerful electromagnetic radiation, possibly leading to incorrect
operation.
In these cases, or if you are otherwise unsure, confirmatory measurements should be made by other means.
*2100874*
2100874 English 13