3Com VCX V7111, Installation Manual, Page: 15 / 58

3Com VCX V7111 Fast Track Installation Guide 15
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 - If installed in a closed or multi-unit rack
assembly, the operating ambient temperature of the rack environment may be
greater than room ambient. 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 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 be such that
a hazardous condition is not achieved due to uneven mechanical loading.
Circuit Overloading - Consideration should be given to the connection of the
equipment to the supply circuit and the effect that overloading of the circuits might
have on overcurrent protection and supply wiring. Appropri-ate consideration of
equipment nameplate ratings should be used when addressing this concern.
Reliable Earthing - Reliable earthing of rack-mounted equipment 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.)
Installing the 2, 4, or 8 Port VCX V7111 in a 19-Inch Rack
The 2, 4, and 8 port gateways are installed into a standard 19-inch rack by the addition of
two supplied brackets (1 short, 1 long). The 8 port with brackets for rack installation is shown
in Figure 3.
To install the 2, 4, or 8 port VCX V7111 gateways in a 19-inch rack, follow these steps:
1
Remove the two screws on one side of the device nearest the front panel.
2
Insert the peg on the short bracket into the third air vent down on the column of air vents
nearest the front panel.
3
Swivel the bracket until the holes in the bracket line up with the two empty screw holes
on the device.
4
Use the screws found in the devices’ package to attach the short bracket to the side of
the device.
5
Remove the two screws on the other side of the device nearest the front panel.
6
Position the long bracket so that the holes in the bracket line up with the two empty
screw holes on the device.