Filter
Top Products
Chapter 5 Maintaining Your GSS
Maintaining Your Site Environment
5-4
Cisco Global Site Selector 4491 Hardware Installation Guide
78-16356-01
Dust and Particles
A clean operating environment can greatly negate the effects of dust and other
particles, which act as insulators and interfere with the operation of mechanical
components. Also, in addition to regular cleaning, follow these guidelines to deter
contamination of the GSS equipment:
• Do not permit smoking anywhere near the GSS
• Do not permit food or drink near the GSS
• Use dust covers when the GSS 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 GSS. This corrosion on GSS connectors is a gradual process
that can eventually lead to intermittent failures of electrical circuits.
To prevent corrosion, avoid touching contacts on boards and cards. Protecting the
GSS from corrosive elements is especially important in moist and salty
environments, which tend to promote corrosion. Also, as a further deterrent to
corrosion, the GSS should not be used in extreme temperatures, as explained in
the “Temperature” section.
Electrostatic Discharge
Electrostatic discharge (ESD) results from the buildup of static electricity on the
human body and certain other objects. 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 GSS, especially chips, and causes the component to
fail.
ESD is a problem particularly in dry environments where the relative humidity is
below 50 percent.