B&K Precision 307A - Manual - Manual (Page 3)

1. Safety Precautions
Electricity can cause severe injuries even with low voltages or
currents.
Therefore it is extremely important that you read the following
information before using your Analog Insulation Tester.
1.1 This Instrument must only be used and operated by a competent
trained person and in strict accordance with the instructions.
We will not accept liability for any damage or injury caused by
misuse or non compliance with instructions and safety procedures.
1.2 This Instrument must not be used on live circuits. Ensure all circuits
are de-energised before testing. See paragraph 1.8 for details of
built-in warning features should your Analog Insulation tester be
connected to a live system.
1.3 Never open Your Analog Insulation Tester except for battery
replacement. (See Battery replacement section).
1.4 Always inspect you Analog Insulation tester and test leads before
use for any sign of abnormality or damage. If any abnormal
conditions exist (broken test leads, cracked case, display faulty
etc...) do not attempt to take any measurement or use the tester.
Return your Analog Insulation tester to your nearest Distributor
for Service.
1.5 Never replace the protective fuse with any other than the specified
or approved equivalent.
1.6 Your Analog Insulation tester has been designed with your safety
in mind. However, no design can completely protect against
incorrect use. Electrical circuits can be dangerous and/or lethal
when a lack of caution or poor safety practice is used. Use caution
in the presence of voltage above 24V as these pose a shock hazard.
1.7 Pay attention to cautions and warnings which will inform you of
potentially dangerous procedures.
1.8 Your Analog Insulation Tester has a live circuit warning bleeper.
If it is connected to an AC live circuit, a beep of twice the frequency
of the voltage present will be heard.
DO NOT proceed to test and immediately disconnect the instrument
from the circuit. In addition, the warning light will lit if the voltage is
above 100Vdc or 70Vac.
When AC voltage is present, before testing, it's value is displayed
on the AC scale.
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