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Catalyst 3750 Switch Hardware Installation Guide
OL-6336-07
Chapter 2 Switch Installation
Preparing for Installation
Warning
When installing or replacing the unit, the ground connection must always be made first and
disconnected last.
Statement 1046
Warning
To prevent the system from overheating, do not operate it in an area that exceeds the maximum
recommended ambient temperature of:
45°C
Statement 1047
Warning
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar
with standard practices for preventing accidents. Use the statement number provided at the end of
each warning to locate its translation in the translated safety warnings that accompanied this device.
Statement 1071
Warning
Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if
interconnections are made using uninsulated exposed metal contacts, conductors, or terminals.
Avoid using such interconnection methods, unless the exposed metal parts are located within a
restricted access location and users and service people who are authorized within the restricted
access location are made aware of the hazard. A restricted access area can be accessed only through
the use of a special tool, lock and key or other means of security.
Statement 1072
Warning
No user-serviceable parts inside. Do not open.
Statement 1073
Warning
Installation of the equipment must comply with local and national electrical codes.
Statement 1074
Caution To comply with the Telcordia GR-1089 Network Equipment Building Systems (NEBS) standard for
electromagnetic compatibility and safety, connect the ethernet cables only to intrabuilding or
nonexposed wiring or cabling.
Note The grounding architecture of this product is DC-isolated (DC-I).
Catalyst 3750G Integrated Wireless LAN Controller Switches
This warning applies only to the Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 switches:
Warning
There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with
the same or equivalent type recommended by the manufacturer. Dispose of used batteries according
to the manufacturer’s instructions.
Statement 1015