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CHAPTER
5-1
Cisco AVS 3120 Application Velocity System Hardware Installation Guide
OL-11805-01
5
Maintaining Your AVS 3120
Proper use of preventive maintenance procedures can ensure that the AVS 3120 operates properly and
can minimize the need for time-consuming service procedures. This chapter contains maintenance
procedures that you should perform regularly.
This chapter includes the following major sections:
• Maintaining Your Site Environment, page 5-1
• Using Power Protection Devices, page 5-5
Maintaining Your Site Environment
An exhaust fan in the power supply cools the power supply and the AVS 3120 by drawing in air through
various openings and blowing it out through the back panel. However, the fan might also draw dust and
other particles into the AVS 3120, causing contaminant buildup, which increases the chassis internal
temperature and interferes with the operation of various components.
To avoid these conditions, we recommend keeping your work environment clean to reduce the amount
of dust and dirt around the AVS 3120 and to reduce the amount of contaminants drawn into it by the
power supply fan.
This section discusses various environmental factors that can adversely affect AVS 3120 performance
and longevity, and it covers these topics:
• Temperature
• Humidity
• Altitude
• Dust and Particles
• Corrosion
• Electrostatic Discharge
• Electromagnetic and Radio Frequency Interference
• Power Source Interruptions