YOKOGAWA CW140, User Manual, Page: 7 / 292

5
IM CW140-E
Precautions for Safe Use of the Instrument
Strictly observe the following cautionary notes in order to avoid the risk of
injury or death of personnel or damage to the instrument due to such hazards
as electrical shock.
WARNING
●
Removal of Case from the Instrument
• Do not remove the case from the instrument or disassemble/modify the instrument itself.
• Some parts of the inside of the instrument contain high-voltage and, therefore, access to the
internal assembly is extremely hazardous. For inspection and/or adjustment of the internal
assembly, contact the vendor from which you purchased the instrument.
●
Use of the Instrument in a Gas Atmosphere
Do not operate the instrument in a location where any flammable or explosive gas/vapor is
present. It is extremely hazardous to operate the instrument in such an atmosphere.
●
Inspection of Power Source
• Before turning on the instrument, always make sure the voltage of the power source to be
applied matches the instrument’s supply voltage.
• When using alkaline batteries or an NiMH battery pack, carefully read the cautionary notes on
battery handling later in this manual.
●
Use of Clamp-on Current Probes
• When using clamp-on current probes, keep the circuit voltage below 600 V AC in order to
avoid possible short-circuits or accidents resulting in injury or death.
• Avoid using the instrument if it has been exposed to rain or moisture or if your hands are wet.
• Do not use clamp-on current probes with any non-insulated conductors.
●
Measures In Case of Anomalies
If the instrument begins to emit smoke, becomes too hot, or gives off an unusual smell, imme-
diately turn it off and disconnect the power cord from the outlet. Also turn off power to the
object under measurement that is connected to the instrument’s input terminals. Never at-
tempt to use the instrument again. If any such anomalies as noted above occurs, contact the
vendor from which you purchased the instrument. Do not attempt to repair the instrument
yourself, as doing so is extremely dangerous.
●
Handling of Power Cords
Do not place any load on the power cord or allow the power cord to come into accidental
contact with any heat source. Hold the plug of the power cord, rather than holding and pulling
the cord itself, when disconnecting it from the outlet. If the power cord is damaged, contact
the vendor from which you purchased the instrument. See page 2 for information on the AC
adapter that is necessary when ordering a replacement power cord.