GE Brivo OEC 715, Service Manual

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Introduction and Safety
25
1.2.13. Symbols
Be familiar with the following symbols that may appear on equipment and schematics so you can safely
maintain and operate the system:
Dangerous Voltage
This symbol identifies areas where hazardous voltages may be present. Use appropriate
safety precautions.
Protective Earth Ground
This symbol identifies the system’s main protective earth ground terminal, which connects to
the facility earth ground through the grounding prong on the AC power plug. This connection
must be in place at all times for safe system operation.
Earth Ground Connection
This symbol identifies an earth ground connection that is necessary to maintain grounding
throughout the system.
X-Ray Source
This X-Ray Source symbol is used to identify controls that will produce ionizing X-radiation
when activated. Always use appropriate safety precautions when generating X-Rays.
This X-Ray Source symbol is used to identify controls that will produce ionizing X-radiation
when activated. Always use appropriate safety precautions when generating X-Rays.
Potential Equalization Terminal
This symbol identifies system terminals which, when connected together, are at the same
potential (not necessarily earth ground). Green/yellow wires normally connect potential
equalization terminals together.
Attention
Attention, see accompanying documentation for information. You can refer to this manual for
the operation instructions.