ATL Telecom R1-SW Ethernet Switch - Manual (Page 47)

Before Installaion
3-5
Disconnecting Power
When disconnecting power, note the following guidelines.
y Locate the emergency power-off switch for the room before working with the system.
y Turn off the power and disconnect the power from the circuit when working with
components that are not hot-swappable or when working near the system backplane or mid-
plane. If the system does not have an on/off switch, unplug the power cord.
y To completely de-energize the system, disconnect the power connection to all power supplies.
y For DC power supplies, locate the circuit breaker on the panel board that services the DC
circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit
breaker in the off position.
y Do not touch the power supply when the power cord is connected. Line voltages are present
within the power supply even when the power switch is off and the power cord is connected.
Grounding the System
y Connect AC-powered systems to grounded power outlets.
y Do not defeat the ground conductor on an AC plug.
y Connect the system to earth (ground).
Connecting Cables
When you connect cables, note the following guidelines.
y Use caution when installing or modifying telephone lines to prevent electric shock.
y Do not work on the system or connect or disconnect cables during periods of lightning activity.
y Do not touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
y Hazardous network voltages are present in WAN ports regardless of whether power to the
system is off or on. When you detach cables, detach the end away from the system first.
y Do not use a telephone to report a gas leak in the vicinity of the leak.
y Do not install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.