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user must take account of the safety instructions and war-
nings contained in these operating instructions.
• Measuring devices should be kept away from children!
• In the workplace, the accident prevention measures of the
Association of Employer's Liability Insurance for electrical
plant and operating material must be observed.
• In schools, training centers, hobby and self-help workshops,
working with measuring equipment and accessories must be
responsibly supervised by trained personnel.
• When opening panels or removing parts (except if this is
manually possible), live components may be exposed.
Connecting points may also be live. Ahead of any adjust-
ment, maintenance, repair or exchange of parts or sub-
assemblies during which the unit must be opened, connec-
ting points must be disconnected from all voltage sources
and measurement circuits. If adjustment, maintenance or
repair must then proceed with the unit open, only trained
engineers, familiar with the risks and relevant regulations
(VDE 0100, VDE 0683, VDE 0701) are authorized to complete
the work.
• Capacitors in the unit may still be on-load, even when the
unit has been disconnected from all power sources and mea-
suring circuits.
• Please take special care when handling voltages in excess of
25 V AC or 35 V DC voltage. Even at these voltages, contact
with electric cables can give a potentially lethal electrical
shock.
• Always remove the measurement probes before modifying
the measurement range.
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• Ahead of measuring, check your measuring device and mea-
suring leads for damage.
• Ahead of measuring, the capacitors being measured must be
fully discharged.
• Measurements of components or circuit components, etc.,
under loads are not permitted! Also, there is a potentially
lethal hazard if voltages greater than 25 VACrms or 35 VDC
are touched!
• Do not use the measuring device in rooms or in adverse envi-
ronmental conditions in which combustible gases, vapors or
dust are present or may be present.
• For your own safety, ensure that neither the measuring device
nor measuring leads become damp or wet.
• When measuring, only use the measuring leads supplied with
the measuring device. Only these leads are permitted.
• To avoid electric shocks, check that there is no contact (not
even indirectly) with measurement probes and the termi-
nals/conductor rails (measurement points) during the measu-
rements.
• If there are reasons for supposing that risk-free operation is
no longer possible, the unit must be deactivated and safetied
against accidental operation. Risk-free operation can no lon-
ger be supposed, when the equipment
- is visibly damaged,
- no longer functions
- has been stored long-term under adverse conditions
- has been exposed to stress during transport.
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