Equipment Rack Precautions - Nortel 2340 Installation Manual

Equipment Rack Precautions

Caution!
ANCHOR THE EQUIPMENT RACK: The equipment rack must be anchored
to an unmovable support to prevent it from falling over when one or more servers are
extended in front of it on slide assemblies. The equipment rack must be installed according
to the manufacturer's instructions. You must also consider the weight of any other device
installed in the rack.
Mains AC power disconnect: The AC power cord(s) is considered the mains disconnect
for the server and must be readily accessible when installed. If the individual server power
cord(s) will not be readily accessible for disconnection then you are responsible for
installing an AC power disconnect for the entire rack unit. This main disconnect must be
readily accessible, and it must be labeled as controlling power to the entire rack, not just to
the server(s). To remove all power, two AC cords must be removed.
Grounding the rack installation: To avoid the potential for an electrical shock hazard, you
must include a third wire safety ground conductor with the rack installation. If the server
power cord is plugged into an AC outlet that is part of the rack, then you must provide
proper grounding for the rack itself. If the server power cord is plugged into a wall AC outlet,
the safety ground conductor in the power cord provides proper grounding only for the
server. You must provide additional, proper grounding for the rack and other devices
installed in it.
Overcurrent protection: The server is designed for an AC line voltage source with up to 20
amperes of overcurrent protection percord feed. If the power system for the equipment rack
is installed on a branch circuit with more than 20 amperes of protection, you must provide
supplemental protection for the server. The overall current rating of a server configured with
two power supplies is less than 4 amperes.
Caution!
Temperature: The operating temperature of the server, when installed in an
equipment rack, must not go below 5 °C (41 °F) or rise above 35 °C (95 °F). Extreme
fluctuations in temperature can cause a variety of problems in your server.
Ventilation: The equipment rack must provide sufficient airflow to the front of the server to
maintain proper cooling. It must also include ventilation sufficient to exhaust a maximum of
1200 BTU per hour for a fully loaded server system using the WLE 2340
It is important to note that this measurement is the maximum, and aminimum or typical
system could be much less. You may want tocalculate the BTU/hr measurement more
accurately for yourconfiguration. An extra 500 BTU/hr over many systems would translate
into a large error calculating air conditioning capacity.
Server Component Replacements 47
Nortel WLAN — Location Engine 2340 Installation