- Cisco WAVE-594 and WAVE-694 Manual

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Cisco Wide Area Virtualization Engine 594 and 694 Hardware Installation Guide

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APPENDIX

Maintaining the WAVE-594 and WAVE-694

Proper use of preventive maintenance procedures can keep the WAVE-594 and WAVE-694 in good

operating condition and minimize the need for costly, time-consuming service procedures. This chapter

contains maintenance procedures that you should perform regularly.

This chapter covers the tasks required for maintaining a WAVE-594 and WAVE-694 or a WAVE-594 and

WAVE-694 farm:

• Maintaining Your Site Environment, page B-1

• Using Power Protection Devices, page B-5

Maintaining Your Site Environment

An exhaust fan in the power supply cools the power supply and system by drawing air in through various

openings in the system and blowing it out the back. However, the fan also draws dust and other particles

into the system, causing contaminant buildup, which results in an increase in the system’s internal

temperature and interferes with the operation of various system components.

To avoid these conditions, we recommend keeping your work environment clean to reduce the amount

of dust and dirt around the system, thereby reducing the amount of contaminants drawn into the system

by the power supply fan.

This section discusses various environmental factors that can adversely affect system performance and

longevity.

• Temperature, page B-2

• Humidity, page B-2

• Altitude, page B-2

• Dust and Particles, page B-3

• Corrosion, page B-3

• Electrostatic Discharge, page B-3

• Electromagnetic and Radio Frequency Interference, page B-4

• Magnetism, page B-4

• Shock and Vibration, page B-4

• Power Source Interruptions, page B-5

Summary of content (6 pages)

PAGE 1
A P P E N D I X B Maintaining the WAVE-594 and WAVE-694 Proper use of preventive maintenance procedures can keep the WAVE-594 and WAVE-694 in good operating condition and minimize the need for costly, time-consuming service procedures. This chapter contains maintenance procedures that you should perform regularly.
PAGE 2
Appendix B Maintaining the WAVE-594 and WAVE-694 Maintaining Your Site Environment Temperature Temperature extremes can cause a variety of problems, including premature aging and failure of chips or mechanical failure of appliances. 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.
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Appendix B Maintaining the WAVE-594 and WAVE-694 Maintaining Your Site Environment Each system is designed to operate at a maximum altitude of 3000 meters (9,843 feet) with some de-rating of maximum operating temperature (see Appendix A, “WAVE-594 and WAVE-694 Hardware Specifications”) and can be stored at a maximum altitude of 4572 meters (15,000 feet).
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Appendix B Maintaining the WAVE-594 and WAVE-694 Maintaining Your Site Environment Electromagnetic and Radio Frequency Interference Electromagnetic interference (EMI) and radio frequency interference (RFI) from a system can adversely affect devices such as radio and television (TV) receivers operating near the system. Radio frequencies emanating from a system can also interfere with cordless and low-power telephones.
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Appendix B Maintaining the WAVE-594 and WAVE-694 Using Power Protection Devices Power Source Interruptions Systems are especially sensitive to variations in voltage supplied by the AC power source. Overvoltage, undervoltage, and transients (or spikes) can erase data from memory or even cause components to fail.
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Appendix B Maintaining the WAVE-594 and WAVE-694 Using Power Protection Devices Surge Protectors Surge protectors are available in a variety of types and usually provide a level of protection commensurate with the cost of the device. Surge protectors prevent voltage spikes, such as those caused during an electrical storm, from entering a system through the electrical outlet.