3Com SuperStack 3 4900 SX, Getting Started Manual

Page: 19 / 54

Rack-mounting 19
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The unit is installed in a clean, air conditioned environment.
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No more than four Switch units are placed on top of one another, if
the units are free-standing.
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Ensure there is adequate clearance at the front of the unit to ensure
that the fibers are not damaged as they have a restricted bend radius.
Rack-mounting
The Switch 4900 SX is 1.5U and will fit in most standard 19-inch racks.
However, as each Switch requires a shelf or runner to support its weight,
you will need to allow a 2U space within the rack for each Switch.
WARNING:
The switch should only be used in a rack if it is mounted on
runners, a shelf, or a tray to support the weight. The rack-mount kits
alone are not sufficient to support the weight of the switch. The rack
mount kits must not be used to suspend the Switch from under a table or
desk, or attach it to a wall.
CAUTION: You must use a full depth shelf or support that will not
obstruct the air flow through the side panels of the Switch 4900 SX.
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.
To rack-mount your Switch:
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 3 .
Figure 3 Fitting a bracket for rack-mounting
17702ua.bk Page 19 Friday, April 6, 2001 3:31 PM