Electrical Safety Warnings - Cisco 124792 User Manual

1.2.3 Electrical Safety Warnings

To prevent airflow restriction, allow clearance around the ventilation openings to be at least 2.0
Warning
inches (50.8 mm).
Figure 1-9
Airflow
This power system is intended for use in a restricted location where the ambient temperature falls
between -40° and +55° Celsius. It is not recommended to continually operate the power system in an
area that exceeds the maximum recommended operating temperature. To prevent the Cisco AC/DC
Power System from overheating, the rectifier automatically shuts down when a thermal alarm is tripped.
1.2.3 Electrical Safety Warnings
The following are electrical safety recommendations for working near the Cisco AC/DC Power System:
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
Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
Warning Installation of the equipment must comply with local and national electrical codes. Statement 1074
Cisco AC/DC Power System User Guide, R1.0
1-10
Two-Inch Clearance Around Front Ventilation Opening
2 in.
50.8 mm
Chapter 1 Introduction
May 2006