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SM 701730-01E
Safety Precautions
The following general safety precautions must be observed during all phases of operation,
service, and repair of this instrument. Failure to comply with these precautions or with
specific warnings given elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument. Yokogawa Electric Corporation
assumes no liability for the customer's failure to comply with these requirements.
WARNING
This service manual is to be used by properly trained personnel only. To avoid
personal injury, do not perform any servicing unless you are qualified to do so.
Refer to the safety precautions prior to performing any service. Even if servicing is
carried out by qualified personnel according to this service manual, YOKOGAWA
assumes no responsibility for any result occurring from this servicing.
Use the Correct Power Supply
Ensure the source voltage matches the voltage of the power supply before
turning ON the power.
Use the Correct Power Cord and Plug
To prevent an electric shock or fire, be sure to use the power cord supplied by
YOKOGAWA. The main power plug must be plugged into an outlet with a
protective grounding terminal. Do not disable protection by using an extension
cord without protective grounding.
Connect the Protective Grounding Terminal
The protective grounding terminal must be connected to ground to prevent an
electric shock before turning ON the power.
Do Not Impair the Protective Grounding
Never cut off the internal or external protective grounding wire or disconnect the wiring
of the protective grounding terminal. Doing so creates a potential shock hazard.
Do Not Operate with Defective Protective Grounding or Fuse
Do not operate the instrument if you suspect the protective grounding or fuse
might be defective.
Use the Correct Fuse
To prevent fire, make sure to use a fuse of the specified rating for current, voltage,
and type. Before replacing the fuses, turn OFF the power and disconnect the
power source. Do not use a different fuse or short-circuit the fuse holder.
Do Not Operate Near Flammable Materials
Do not operate the instrument in the presence of flammable liquids or vapors.
Operation of any electrical instrument in such an environment constitutes a
safety hazard.
Do Not Remove Any Covers
There are some components inside the instrument containing high voltage. Do
not remove any cover if the power supply is connected. The cover should be
removed by qualified personnel only.
Ground the Instrument before Making External Connections
Connect the protective grounding before connecting the instrument to a
measurement or control unit.
