3Com 3C16980 User Guide - Page 24

Choosing a Suitable Site, Rack-mounting, CAUTION - us air

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24 CHAPTER 2: INSTALLING THE SWITCH Choosing a Suitable Site The Switch is suited for use in an office environment where it can be mounted in a standard 19-inch equipment rack, or free standing. Alternatively, the Switch can be rack-mounted in a wiring closet or equipment room. A rack-mounting kit, containing two mounting brackets and six screws, is supplied with the Switch. When deciding where to position the Switch, ensure that: s You are able to meet the configuration rules detailed in "Configuration Rules for Fast Ethernet" on page 20. s The Switch is accessible and cables can be connected easily. s Cabling is away from: s Sources of electrical noise such as radios, transmitters and broadband amplifiers s Power lines and fluorescent lighting fixtures s Water or moisture cannot enter the case of the Switch. s Air-flow is not restricted around the Switch or through the vents in the side of the Switch. We recommend that you provide a minimum of 25mm (1in.) clearance. s No more than four Switch units are placed on top of one another, if the units are free standing. Rack-mounting The Switch is 1.5U high and fits in most standard 19-inch racks. CAUTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the underside of the Switch if they have been fitted. 1 Place the Switch the right way up on a hard flat surface, with the front facing towards you. 2 Locate a mounting bracket over the mounting holes on one side of the Switch, as shown in Figure 7.

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24
C
HAPTER
2: I
NSTALLING
THE
S
WITCH
Choosing a Suitable
Site
The Switch is suited for use in an office environment where it can be
mounted in a standard 19-inch equipment rack, or free standing.
Alternatively, the Switch can be rack-mounted in a wiring closet or
equipment room. A rack-mounting kit, containing two mounting
brackets and six screws, is supplied with the Switch.
When deciding where to position the Switch, ensure that:
■
You are able to meet the configuration rules detailed in
“Configuration Rules for Fast Ethernet”
on
page 20
.
■
The Switch is accessible and cables can be connected easily.
■
Cabling is away from:
■
Sources of electrical noise such as radios, transmitters and
broadband amplifiers
■
Power lines and fluorescent lighting fixtures
■
Water or moisture cannot enter the case of the Switch.
■
Air-flow is not restricted around the Switch or through the vents in the
side of the Switch. We recommend that you provide a minimum of
25mm (1in.) clearance.
■
No more than four Switch units are placed on top of one another, if
the units are free standing.
Rack-mounting
The Switch is 1.5U high and fits in most standard 19-inch racks.
CAUTION:
Disconnect all cables from the Switch before continuing.
Remove all self adhesive pads from the underside of the Switch if they
have been fitted.
1
Place the Switch the right way up on a hard flat surface, with the front
facing towards you.
2
Locate a mounting bracket over the mounting holes on one side of the
Switch, as shown in
Figure 7
.