Juniper EX3300, Руководство по оборудованию, Страница: 79 / 272

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Clearance Requirements for Airflow and Hardware Maintenance for an EX9214 Switch
General Site Guidelines
Efficient device operation requires proper site planning and maintenance and proper
layout of the equipment, rack or cabinet (if used), and wiring closet.
To plan and create an acceptable operating environment for your device and prevent
environmentally caused equipment failures:
•
Keep the area around the chassis free from dust and conductive material, such as
metal flakes.
• Follow prescribed airflow guidelines to ensure that the cooling system functions properly
and that exhaust from other equipment does not blow into the intake vents of the
device.
• Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent
damaging the equipment. Static discharge can cause components to fail completely
or intermittently over time.
•
Install the device in a secure area, so that only authorized personnel can access the
device.
Related
Documentation
Prevention of Electrostatic Discharge Damage on page 231
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Site Electrical Wiring Guidelines
Table 33 on page 57 describes the factors you must consider while planning the electrical
wiring at your site.
WARNING: It is particularly important to provide a properly grounded and
shielded environment and to use electrical surge-suppression devices.
Table 33: Site Electrical Wiring Guidelines
Guidelines Site Wiring Factor
If your site experiences any of the following problems, consult
experts in electrical surge suppression and shielding:
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Improperly installed wires cause radio frequency interference
(RFI).
• Damage from lightning strikes occurs when wires exceed
recommended distances or pass between buildings.
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Electromagnetic pulses (EMPs) caused by lightning damage
unshielded conductors and electronic devices.
Signaling limitations
57 Copyright © 2016, Juniper Networks, Inc.
Chapter 6: Preparation Overview