Ensure that these environmental guidelines are followed:
•
The site must be as dust-free as possible, because dust can clog air intake vents and
filters, reducing the efficiency of the switch cooling system.
•
Maintain ambient airflow for normal switch operation. If the airflow is blocked or
restricted, or if the intake air is too warm, the switch might overheat, leading to the
switch temperature monitor shutting down the switch to protect the hardware
components.
Table 27 on page 91 provides the required environmental conditions for normal switch
operation.
Table 27: EX Series Switch Environmental Tolerances
ToleranceDescription
No performance degradation to 10,000 feet (3048 meters)Altitude
Normal operation ensured in relative humidity range of 10% through
85%, noncondensing
Relative humidity
•
EX2200, EX3200, EX4200, and EX4500 switches: Normal
operation ensured in temperature range of 32° F through 113° F
(0° C through 45° C)
•
EX8208 and EX8216 switches: Normal operation ensured in
temperature range of 32° F through 104° F (0° C through 40° C)
Temperature
Complieswith Zone 4 earthquake requirements as per GR-63, Issue
3.
Seismic
NOTE: Install EX Series switches only in restricted areas, such as dedicated equipment
rooms and equipment closets, in accordance with Articles 110–16, 110–17, and 110–18
of the National Electrical Code, ANSI/NFPA 70.
Related Topics • Clearance Requirements for Airflow and Hardware Maintenance for EX2200 Switches
• Clearance Requirements for Airflow and Hardware Maintenance for EX3200 and
EX4200 Switches on page 96
• Clearance Requirements for Airflow and Hardware Maintenance for EX4500 Switches
• Clearance Requirements for Airflow and Hardware Maintenance for an EX8208 Switch
• Clearance Requirements for Airflow and Hardware Maintenance for an EX8216 Switch
91Copyright © 2010, Juniper Networks, Inc.
Chapter 4: Site Preparation
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