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tool might no longer function correctly. Have damaged parts repaired before using the measuring
tool. Many accidents are caused by poorly maintained measuring tools.
▶ Do not under any circumstances modify or tamper with the product. Changes or modifications not
expressly approved by Hilti may restrict the user's authorization to operate the product.
▶ Check the accuracy of the measuring tool before using it for important measurements, and if it
has been dropped or subjected to other mechanical stresses.
▶ Due to the measuring principle employed, the results of measurements can be negatively affected
by certain ambient conditions. These include, for example, the proximity of devices that produce
strong magnetic or electro-magnetic fields, vibrations and temperature changes.
▶ Rapidly changing measuring conditions can falsify the results.
▶ When the product is brought into a warm environment from very cold conditions, or vice-versa,
allow it to become acclimatized before use. Big differences in temperature can lead to incorrect
operation and incorrect results.
▶ When adapters or accessories are used, make sure they are mounted securely.
▶ The measuring tool is designed for the tough conditions of jobsite use, but as with other optical
and electrical products (e.g. binoculars, spectacles, cameras) it must be handled with care.
▶ The specified operating and storage temperatures must be observed.
2.2
Additional safety instructions for laser measuring tools
▶ Laser radiation in excess of Class 3R can be emitted if the product is opened without correct
procedure being followed. Have the product repaired only by Hilti Service.
▶ Secure the area in which you will be taking measurements. While setting up the product, make
sure that you do not direct the laser beam toward yourself or others. The laser beam is harmful to
eyes and skin. Laser beams should be projected well above or well below eye level.
▶ Do not look directly into the laser beam. This can lead to serious eye injuries. If an eye injury is caused
by the laser beam, immediately seek medical assistance from an eye specialist.
▶ Never direct the laser beam toward mirrors, windows or other highly reflective surfaces. The reflected
laser beam can lead to serious eye injuries.
▶ Never look into the laser beam with a telescope, binoculars or any other optical instrument. Otherwise
permanent eye injuries can result.
▶ Areas in which the laser beam is used must be secured with appropriate laser warning signs.
▶ Keep the laser exit window clean in order to avoid measurement errors.
▶ Check the accuracy of the product before use and several times during use.
▶ Readings taken in the vicinity of reflective objects or surfaces, through panes of glass or similar materials
can falsify the result of measurement.
▶ Do not work with surveyor's staffs in the vicinity of high-voltage electricity cables.
▶ Make sure that no other laser measuring tool that can influence your measurements is in use in the
vicinity.
▶ Do not permit the laser beam to project beyond the controlled area.
2.3
Additional safety instructions
▶ Never tamper with or modify the product or accessories in any way.
▶ Risk of injury by falling tools and/or accessories. Before starting work, check that the battery holder is
latched and that installed accessories are secure.
▶ Switch the product off when it is not in use.
▶ Comply with all warnings and error messages that appear on the display.
▶ Check the rubber seal of the battery holder for damage; replace the rubber seal as necessary. A damaged
rubber seal impairs protection against ingress of water. Hilti recommends replacing the rubber seal every
2 years to maintain efficient protection.
▶ Physical reflection and refraction that could impair accuracy and/or the range of the laser can occur in
hot weather conditions or, in a small-diameter pipe, can be caused by temperature or the presence of
moisture in the pipe. To minimize the effects of these conditions, take the following precautions:
▶ Turn the pipe so that it is laid hot side down (for example if it has been heated by the sun).
▶ Do not apply excessive quantities of adhesive to the pipe joins.
▶ Refill the trench immediately after pipe-laying, in order to ensure temperature stability.
▶ If these measures are not feasible, use a blower to blow cooling air through the pipe.
▶ Do not operate the scanning tool in proximity to pregnant women or users of cardiac pacemakers or in
the vicinity of medical apparatus.
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