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2-2
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
OL-21561-02
Chapter 2 Preparing for Installation
Site Requirements
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be
accessed only through the use of a special tool, lock and key, or other means of security.
Statement 1017
Warning
Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if
interconnections are made using uninsulated exposed metal contacts, conductors, or terminals.
Avoid using such interconnection methods, unless the exposed metal parts are located within a
restricted access location and users and service people who are authorized within the restricted
access location are made aware of the hazard. A restricted access area can be accessed only
through the use of a special tool, lock and key or other means of security.
Statement 1072
Site Requirements
These following sections describe some of the basic site requirements that you should be aware of as you
prepare to install your Catalyst
4948E or Catalyst 4948E-F switch:
• Rack-Mounting Guidelines, page 2-2
• Temperature, page 2-3
• Air Flow, page 2-4
• Humidity, page 2-5
• Altitude, page 2-5
• Dust and Particulates, page 2-5
• Corrosion, page 2-6
• Electromagnetic and Radio Frequency Interference, page 2-6
• Shock and Vibration, page 2-7
• Maintaining Safety with Electricity, page 2-9
• Preventing Electrostatic Discharge Damage, page 2-10
Rack-Mounting Guidelines
A rack-mount kit (69-2037-xx) is included in the accessory kit for mounting the switch in a standard
19-inch (48.3
cm) equipment rack. This rack-mount kit is not suitable for use in the following situations:
• Racks with obstructions (such as power strips) that could impair access to the switch
Before rack-mounting the switch, ensure the following:
• The equipment rack is the proper size.
–
The width of the rack, between the two front-mounting strips or rails, must be 17.75 inches
(45.09
cm).
–
The depth of the rack, between the front- and rear-mounting strips, must be at least 19.25 inches
(48.9
cm) but not more than 32.5 inches (82.5 cm).
–
The rack must have sufficient vertical clearance to insert the chassis. The chassis height is 1 U
(1.75
inches (4.45 cm)).