Self and personnel protection
Electric shock may result in major injuries or
■
death and may endanger the functionality of
objects (e.g. damage to the device).
The proper function of the voltage tester must
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be checked shortly before use.
Ensure that measuring leads and the device are
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in proper working order.
Check the device by connecting it to a known
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power source, e.g. a 230 V socket.
• If the display for one or more functions fails
in the process, the device must no longer
be used and must be checked by qualified
specialist personnel.
Hold the device only at the handles, avoid
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touching the test probes!
Safety in the workplace
Avoid operating the device in the vicinity of
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electric welding machines, induction heaters
and other electromagnetic fields.
After abrupt changes in temperature, the
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device must be allowed to adapt to the new
ambient temperature for approx. 30 minutes to
stabilise the IR sensor.
Do not expose the device to high temperatures
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for any length of time.
Avoid dusty and humid ambient conditions.
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In commercial facilities the accident prevention
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regulations (in Germany issued by the commer-
cial trade association for the safety of electrical
systems and equipment) must be observed.
To avoid damage to the device, do not exceed
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the maximum input values specified in the
technical data.
Check the position of the function selection
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switch and make sure that it is in the correct
position before each measurement.
During measurements, keep your fingers
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behind the protective ring.
In DC mode the + sign on the device indicates
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the technical current direction (see figure).
Safety Instructions
Before performing diode, resistance or conti-
■
nuity measurements, discharge capacitors and
disconnect devices under test from the power
supply.
Voltage tests at sockets may be difficult
■
because of the unreliable connection with the
fitted electrical contacts and result in incorrect
results. Therefore additional alternative meas-
ures should be taken to ensure that there are
no live wires or cables.
General safety instructions
Always visually check the device for damage
■
before initial use and after transport. Ensure
any damage is repaired by trained service
personnel prior to initial use.
Do not use with the battery compartment open!
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The measuring leads must be disconnected
■
from the measuring circuit during battery
replacement.
In order to protect the device from damage,
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remove the batteries if the device is not in use
for a prolonged period of time.
Measurement devices and accessories are not
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toys and should always be kept away from
children!
Only use the enclosed safety measuring leads
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or equivalent measuring leads that comply with
the correct measuring category CAT IV 600 V.
To avoid electric shocks, precautionary
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measures must be observed when working with
voltages greater than 60 V DC or 30 V AC .
According to DIN VDE standards, these values
represent the limit at which exposed touchable
surfaces are still safe.
The testing device must only be used in the
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specified measuring ranges.
Use only genuine Würth accessories
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and spare parts.
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