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Preparing for the Installation
Controlling the Humidity Level
To maximize equipment life, keep operating humidity between 50% and 70% relative
humidity (non-condensing) during typical operation.
The equipment can operate between 5% and 95% relative humidity (non-condensing)
for short intervals.
Protecting Your System from ESD (Electrostatic Discharge)
Your system must be protected from static electricity or ESD. Take the following
measures to ensure optimum system performance:
•
Remove materials that can cause electrostatic generation (such as synthetic resins)
from the wiring closet.
Check the appropriateness of floor mats and flooring.
•
Connect metal chassis, conduit, and other metals to ground using dedicated
grounding lines.
•
Use electrostatically safe equipment.
If you are working with pluggable interface modules, wear an ESD-preventive wrist
strap and connect the metal end to a grounded equipment rack or other source of
ground.
Rack Specifications and Recommendations
Racks should conform to conventional standards.
In the United States, use EIA Standard RS-310C: Racks, Panels, and Associated
Equipment. In countries other than the United States, use IEC Standard 297. In
addition, verify that your rack meets the basic mechanical, space, and earthquake
requirements that are described in this section.
Mechanical Recommendations for the Rack
Use equipment racks that meet the following mechanical recommendations:
•
Use an open style, 19-inch rack to facility easy maintenance and to provide proper
ventilation.
•
Use a rack made of steel or aluminum.
•
The rack should use the universal mounting rail hole pattern that is identified in EIC
Standard 297.
•
The rack should have designated earth grounding connections (typically on the
base).
•
The rack must meet earthquake safety requirements equal to that of the installed
chassis.
•
The mounting holes should be flush with the rails to accommodate the chassis.
•
The rack should support approximately 276 kg (600 lb).
Extreme 8720 Switch Hardware Installation Guide
Controlling the Humidity Level
23
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