5
1.1.4 Instructions
•
Remove test leads from the Meter before opening the Meter case or battery cover.
When servicing the Meter, use only specified replacement parts.
•
Before opening up the instrument, always disconnect from all sources of electric current and make
sure you are not charged with static electricity, which may destroy internal components.
•
Any adjustment, maintenance or repair work carried out on the meter while it is live should be
carried out only by appropriately qualified personnel, after having taken into account the
instructions in this present manual.
•
A "qualified person" is someone who is familiar with the installation, construction and operation of
the equipment and the hazards involved. He is trained and authorized to energize and de-energize
circuits and equipment in accordance with established practices.
•
When the instrument is opened up, remember that some internal capacitors can retain
a dangerous potential even after the instrument is switched off.
•
If any faults or abnormalities are observed, take the instrument out of service and ensure that it
cannot be used until it has been checked out.
•
If the meter is not going to be used for a long time, take out the battery and do not store the
meter in high temperature or high humidity environment.
1.2 Protection mechanisms
This instrument is fitted with various protection mechanisms:
•
Varistor protection for limiting transients of over 1000V at the V
Ω
terminal.
•
A PTC (positive temperature coefficient) resistor protects against permanent overvoltages of up to
1000V during resistance, capacitance, temperature, continuity and diode test measurements.
~
Caution
:
refer to the instruction manual. Incorrect use may result in damage to the
device or its components.
AC (Alternating Current)
DC (Direct Current)
AC or DC
Earth ground
Double insulated
Fuse
Conforms to European Union directives
Summary of Contents for AX-18B
Page 1: ...AX 18B INSTRUCTION...