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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 anchors must be able to withstand a force of up to 113 kg (250 lbs). You
must also consider the weight of any other device installed in the rack.
Main AC power disconnect: 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 labelled as
controlling power to the entire unit, not just to the server(s).
Grounding the rack installation: To avoid the potential for an electrical shock hazard, you
must include a third wire safety grounding conductor with the rack installation. If a 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 server power cords are plugged into wall AC outlets, the safety
grounding conductor in each power cord provides proper grounding only for the server. You
must provide additional, proper grounding for the rack and other devices installed in it.
Temperature: The operating temperature of the server, when installed in an equipment rack,
must not go below 5 °C or rise above 35 °C. 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
4,100 Btu's per hour for the server. The rack selected and the ventilation provided must be
suitable to the environment in which the server will be used.
NOTE:
For vertical reference, every three screw holes on the rack vertical mounting rail
are equal to 1U (1.75 inches).
Mounting holes in the vertical rails of equipment racks are commonly spaced in a 5/8 x 5/8
x 1/2-inch sequence. Perform the following steps carefully; brackets must be mounted
with precision to allow room for the next server you install in a rack.
Installing the Support Rails
1. Install the right support rail (A in figure 2) as shown in figure 2.
2. Secure the rail to the front (B in figure 2) and rear (C in figure 2) vertical mounting
rails with three screws (D in figure 2) and the washer plate (E in figure 2).
WARNING
CAUTION
Rack-Mount Kit H-3
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