Prokit's Industries 3PK-9912 - Manual (Page 4)

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Read these operating instructions thoroughly and completely before
operating your meter. Pay particular attention to WARNINGS, which will
inform you of potentially dangerous procedures. The instructions in
these warnings must be followed.
Always inspect your meter and test leads for any sign of damage or
abnormality before every use. If any abnormal conditions exist (i.e.
broken test leads, cracked cases, display not reading, etc.), do not
attempt to take any measurements.
Do not expose the instrument to direct sunlight, extreme temperature or
moisture.
Never ground yourself when taking electrical measurements. Do not
touch exposed metal pipes, outlets, fixtures, etc., which might be at
ground potential. Keep your body isolated from ground by using dry
clothing; rubber shoes, rubber mat, or any approved insulating material.
You always are careful when working with voltages above 60V dc or
30V ac rms. Keep fingers behind the probe barriers while measuring.
Never use the meter to measure voltages that might exceed the
maximum allowable input value of any function.
Never touch exposed wiring, connections or any live circuit when
attempting to take measurements.
MAINTENANCE
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Before opening the case, always disconnect test leads from all
energized circuits.
Never use the meter unless the back cover is in place and fastened
completely.
Do not use abrasives or solvents on the meter. To clean it using a damp
cloth and mild detergent only.
Qualified and trained service technicians should only perform calibration
and repair of the meter.