Alcatel-Lucent 7750 SR-a4, Installation Manual, Page: 75 / 232

Installing the 7750 SR-a Chassis
7750 SR-a4 and SR-a8 Installation Guide 75
Installation Preparation and Precautions
Before you begin, observe the following:
Danger:
• Only trained and qualified personnel should install or replace this equipment.
• Verify the following:
→ The power to the rack is OFF .
→
The equipment rack must be correctly grounded.
• Do not assume that power has been disconnected from a circuit. Be sure to disconnect
power from the equipment rack and external cables before installing or removing the
7750 SR-a4 or 7750 SR-a8.
• Ensure that nearby equipment, including breaker panel bus bars and power connectors,
is made safe. Either shut off the power, if possible, or install safety guards or mats over
exposed power points and cables.
• Verify that the equipment rack is securely installed, anchored, and grounded. Refer to
the rack manufacturer’s documentation for instructions.
• For personal safety, use at least two people to install the router. Use a equipment lift, if
necessary.
• Always install the heaviest equipment in the bottom of the rack to keep the center of
gravity of the equipment rack as low as possible.
Warning:
• Prepare the equipment rack and site before installing the 7750 SR-a chassis and
ensure that you comply with all the requirements described in
Site Preparation on page
47
. Plan the chassis placement near the power sources and network interface
connections.
Caution:
• There are no handles or hand grips on the 7750 SR-a chassis. Lift the router from
underneath. Do not lift the router by the internal chassis frame.
• When rack-mounting a chassis in an equipment rack, do not stack one 7750 SR-a
chassis or any other equipment directly on top of another 7750 SR-a chassis, such that
the bottom chassis is supporting other devices. Each unit must be secured in the rack
with the appropriate mounting apparatus.