wtw TecnoLine LF 171 Operating Manual page 65

Safety guidelines
This device has been built and tested according to the legally required safety standards for
electronic measuring instruments and has left our works in a condition complying with all the
requirements of technical safety (IEC 1010).
The perfect functioning and operational safety of the instrument is only ensured if the user
observes the normal safety precautions as well as the specific safety guidelines stated in the
present reference manual.
l Before switching the instrument on ensure that the operating voltage stated on the plug-in
power supply unit corresponds to the mains voltage (statement of the supply voltage
range).
l Operation of the instrument is only admissible with accessories corresponding to the
specifications in the chapter "Technical data". The manufacturer gives no warranty for
damages which can be caused by using unsuitable accessories (e. g. wrong line adaptor).
l The perfect functioning and operational safety of the instrument can only be maintained under
the climatic conditions specified in the chapter "Technical data" of this operating instruction.
l Opening of the instrument, balancing, maintenance and repair work must only be carried out
by a suitably qualified technician authorized by WTW.
Contraventions may - depending on the situation - lead to a loss of the right to claim under
guarantee.
l If there is reason to assume that the instrument can no longer be employed without a risk, it
must be set aside and appropriately marked to prevent further use.
l The safety of the user may be endangered, e.g. if the instrument
− shows severe mechanical damage,
− no longer operates as specified,
− has been stored over a longer period under unsuitable conditions,
− has been subject to difficult conditions during transport.
l If in doubt, the instrument should as a rule be sent back to the manufacturer -
"Wissenschaftlich-Technische Werkstätten GmbH" - for repair and maintenance.
Please read these safety guidelines carefully before
putting the device into service!
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