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Cisco Wide Area Virtualization Engine 594 and 694 Hardware Installation Guide
OL-24619-02
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).
Dust and Particles
A clean operating environment can greatly reduce the negative effects of dust and other particles, which
act as insulators and interfere with the operation of a system’s mechanical components. In addition to
regular cleaning, you should follow these guidelines to deter contamination of the system equipment:
• Do not permit smoking anywhere near the system.
• Do not permit food or drink near the system.
• Use dust covers when the system is not in use.
• Close windows and outside doors to keep out airborne particles.
Corrosion
The oil from a person’s fingers or prolonged exposure to high temperature or humidity can corrode the
gold-plated edge connectors and pin connectors on various devices in the system. This corrosion on
system connectors is a gradual process that can eventually lead to intermittent failures of electrical
circuits.
To prevent corrosion, you should avoid touching contacts on boards and cards. Protecting the system
from corrosive elements is especially important in moist and salty environments, which tend to promote
corrosion. Also, as a further deterrent to corrosion, the system should not be used in extreme
temperatures, as explained in the “Temperature” section on page B-2.
Electrostatic Discharge
Electrostatic discharge (ESD) results from the buildup of static electricity on the human body and certain
other objects. This static electricity is often produced by simple movements such as walking across a
carpet. ESD is a discharge of a static electrical charge that occurs when a person whose body contains
such a charge touches a component in the system. This static discharge can cause components, especially
chips, to fail. ESD is a problem particularly in dry environments where the relative humidity is below 50
percent.
To reduce the effects of ESD, you should observe the following guidelines:
• Wear a grounding wrist strap. If a grounding wrist strap is unavailable, touch an unpainted metal
surface on the chassis periodically to neutralize any static charge.
• Keep components in their antistatic packaging until they are installed.
• Avoid wearing clothing made of wool or synthetic materials.