Cisco Catalyst 3750 Hardware Installation Manual page 81

Chapter 3 Switch Installation
Before working on equipment that is connected to power lines, remove jewelry
Warning
(including rings, 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.
Do not stack the chassis on any other equipment. If the chassis falls, it can
Warning
cause severe bodily injury and equipment damage.
The plug-socket combination must be accessible at all times because it serves
Warning
as the main disconnecting device.
To prevent the switch from overheating, do not operate it in an area that
Warning
exceeds the maximum recommended ambient temperature of 113° F (45° C). To
prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around
the ventilation openings.
Warning When installing or replacing the unit, the ground connection must always be
made first and disconnected last.
Warning This equipment is intended to be grounded. Ensure that the host is connected to
earth ground during normal use.
Do not work on the system or connect or disconnect cables during periods of
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lightning activity.
Ultimate disposal of this product should be handled according to all national
Warning
laws and regulations.
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Catalyst 3750 Switch Hardware Installation Guide
Preparing for Installation
3-3