Juniper Networks EX8208 manual EX Series Switch Environmental Tolerances, DescriptionTolerance

Chapter 4: Site Preparation

Table 37: Site Electrical Wiring Guidelines (continued)

Site Wiring Factor	Guidelines
Electromagnetic compatibility	If your site is susceptible to problems with electromagnetic
	compatibility (EMC), particularly from lightning or radio
	transmitters, seek expert advice.
	Some of the problems caused by strong sources of
	electromagnetic interference (EMI) are:
	• Destruction of the signal drivers and receivers in the switch
	• Electrical hazards as a result of power surges conducted
	over the lines into the equipment
Related Topics •	General Safety Guidelines and Warnings for EX Series Switches on page 263

•General Electrical Safety Guidelines and Warnings for EX Series Switches on page 291

•Prevention of Electrostatic Discharge Damage on EX Series Switches on page 292

•Power Supply in EX2200 Switches

•Power Supply in EX3200 and EX4200 Switches

•AC Power Supply in EX4500 Switches

•AC Power Supply in an EX8200 Switch on page 40

•DC Power Supply in an EX8200 Switch on page 48

Environmental Requirements and Specifications for EX Series Switches

The switch must be installed in a rack or cabinet housed in a dry, clean, well-ventilated, and temperature-controlled environment.

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 38 on page 95 provides the required environmental conditions for normal switch operation.

Table 38: EX Series Switch Environmental Tolerances

DescriptionTolerance

Altitude No performance degradation to 10,000 feet (3048 meters)

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