Dell PowerConnect J-EX4200, Hardware Manual

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General Site Guidelines for J-EX Series Switches
Efficient switch 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 J-EX Series switch 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
switch.
•
Follow the prescribed ESD prevention procedures to avoid damaging the equipment.
Static discharge can cause components to fail completely or intermittently over time.
• Install the switch in a secure area, so that only authorized personnel can access the
switch.
Related
Documentation
Prevention of Electrostatic Discharge Damage on J-EX Series Switches on page 198
•
•
Clearance Requirements for Airflow and Hardware Maintenance for J-EX4200 Switches
on page 66
•
Environmental Requirements and Specifications for J-EX Series Switches on page 60
Site Electrical Wiring Guidelines for J-EX Series Switches
Table 24 on page 59 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 24: 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:
•
Improperly installed wires cause radio frequency interference
(RFI).
• Damage from lightning strikes occurs when wires exceed
recommended distances or pass between buildings.
•
Electromagnetic pulses (EMPs) caused by lightning
damages unshielded conductors and electronic devices.
Signaling limitations
59
Chapter 4: Site Preparation