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Preparing for Installation
Before working on equipment that is connected to power lines, remove jewelry (including rings,
Warning
necklaces, and watches). Metal objects will heat up when connected to power and ground and can
cause serious burns or weld the metal object to the terminals. Statement 43
Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury
Warning
and equipment damage. Statement 48
Warning
Ethernet cables must be shielded when used in a central office environment. Statement 171
Warning
Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard. Statement 206
Warning
Voice over IP (VoIP) service and the emergency calling service do not function if power fails or is
disrupted. After power is restored, you might have to reset or reconfigure equipment to regain access
to VoIP and the emergency calling service. In the USA, this emergency number is 911. You need to be
aware of the emergency number in your country. Statement 361
Warning
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Statement 1001
Read the installation instructions before connecting the system to the power source. Statement 1004
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be
Warning
accessed only through the use of a special tool, lock and key, or other means of security.
Statement 1017
Warning
The plug-socket combination must be accessible at all times, because it serves as the main
disconnecting device. Statement 1019
Warning
Use copper conductors only. Statement 1025
This unit might have more than one power supply connection. All connections must be removed to
Warning
de-energize the unit. Statement 1028
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
2-2
Chapter 2
Switch Installation
OL-19593-03
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