User Guide

30 Chapter 1 Installing the Nortel VPN Router 2750 chassis
NN46110-318 02.01
Installing the chassis in an equipment rack
To mount the VPN Router 2750 in an equipment rack, you need the following
equipment:
• a standard 19-inch equipment rack
• four screws (supplied with the chassis)
• four cage nuts (supplied with the chassis) if the rack does not have threaded
rail holes
• a #2 Phillips screwdriver
Rack-mount recommendations
When you mount the chassis in the equipment rack, observe the following
standard recommendations:
• Nortel recommends a maximum ambient temperature of 40
o
C (104
o
F). Ensure
that the internal temperature of the rack does not exceed (104
o
F).
• Do not block the power supply vents or otherwise restrict air flow when
installing the chassis in the rack.
• Stabilize your rack so that it does not tip over under the weight of the gateway
and other devices.
• Ensure that the electrical branch circuits can handle the VPN Router 2750 and
other units in the rack before you install and turn on the gateway.
• Maintain a reliable earth-ground path in the rack system. You must connect
the gateway to an earth ground.
Attaching the shelf in the equipment rack
The VPN Router 2750 ships with a rack-mount shelf to support the chassis in the
equipment rack.
To attach the shelf to the inside of the equipment rack:
1 If the holes in the rack’s vertical supports are not threaded, attach a cage nut in
four locations at the front of the rack (Figure 3 on page 31).