3Com VCX V7122 Installation Manual page 14

14 C 2: I
HAPTER NSTALLING THE
V7122 M G
EDIA ATEWAYS
CAUTION: Rack Mount Safety Instructions (UL)
When installing the chassis in a rack, be sure to implement the following
safety instructions recommended by Underwriters Laboratories:
Elevated Operating Ambient Temperature: If installed in a closed or
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multi-unit rack assembly, the operating ambient temperature of the
rack environment may be greater than room ambient temperature.
Therefore, consideration should be given to installing the equipment
in an environment compatible with the maximum ambient
temperature (Tma) specified by the manufacturer.
Reduced Air Flow: Installation of the equipment in a rack should be
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such that the amount of air flow required for safe operation on the
equipment is not compromised.
Mechanical Loading: Mounting of the equipment in the rack should
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be such that a hazardous condition is not achieved due to uneven
mechanical loading.
Circuit Overloading: Consideration should be given to the connection
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of the equipment to the supply circuit and the effect that overloading
of the circuits might have on overcurrent protection and supply
wiring. Appropriate consideration of equipment nameplate ratings
should be used when addressing this concern.
Reliable Earthing: Reliable earthing of rack-mounted equipment
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should be maintained. Particular attention should be given to supply
connections other than direct connections to the branch circuit (e.g.,
use of power strips.)
Before rack mounting the V7122, you need to attach the two brackets
(supplied) to the front sides of the chassis (see
To attach the two front side brackets, perform these steps:
1 Remove the two screws nearest the front panel on either side of the
device.
2 Align a bracket over two holes on one side (so that the bracket's larger
holes face front) and with the two supplied replacement screws, screw in
the bracket.
3 Perform the same procedure on the other side.
Figure 3).