Cisco Systems 4490 manual Temperature

Chapter 5 Maintaining the Cisco Global Site Selector 4490

Maintaining Your Site Environment

This section discusses various environmental factors that can adversely affect system performance and longevity. It covers:

•Temperature

•Humidity

•Altitude

•Dust and Particles

•Corrosion

•Electrostatic Discharge

•Electromagnetic and Radio Frequency Interference

•Magnetism

•Power Source Interruptions

Temperature

Temperature extremes can cause a variety of problems, including premature aging and failure of chips or mechanical failure of devices. Extreme temperature fluctuations can cause chips to become loose in their sockets and can cause expansion and contraction of disk drive platters, resulting in read or write data errors.

To minimize the negative effects of temperature on system performance, follow these guidelines:

•Ensure that the system is operated in an environment no colder than 50°F (10°C) or hotter than 95°F (35°C).

•Ensure that the system has adequate ventilation. Do not place it within a closed-in wall unit or on top of cloth, which can act as insulation. Do not place it in direct sunlight, particularly in the afternoon. Do not place it next to a heat source of any kind, including heating vents during winter.

	Cisco Global Site Selector 4490 Hardware Installation Guide
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