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The leveling jacks are extended to the floor.
•
The full weight of the rack rests on the leveling jacks.
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The stabilizing feet are attached to the rack if it is a single-rack installation.
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The racks are coupled together in multiple-rack installations.
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Only one component is extended at a time. A rack may become unstable if more than
one component is extended for any reason.
WARNING: To reduce the risk of personal injury or equipment damage when unloading
a rack:
•
At least two people are needed to safely unload the rack from the pallet. An empty
42U rack can weigh as much as 115 kg (253 lb), can stand more than 2.1 m (7 ft)
tall, and may become unstable when being moved on its casters.
•
Never stand in front of the rack when it is rolling down the ramp from the pallet.
Always handle the rack from both sides.
WARNING: To reduce the risk of personal injury or damage to the equipment,
adequately stabilize the rack before extending a component outside the rack. Extend
only one component at a time. A rack may become unstable if more than one component
is extended.
WARNING: When installing a server in a telco rack, be sure that the rack frame is
adequately secured to the top and bottom of the building structure.
Server warnings and cautions
Before installing a server, be sure that you understand the following warnings and cautions.
WARNING: To reduce the risk of electric shock or damage to the equipment:
•
Do not disable the power cord grounding plug. The grounding plug is an important
safety feature.
•
Plug the power cord into a grounded (earthed) electrical outlet that is easily
accessible at all times.
•
Unplug the power cord from the power supply to disconnect power to the equipment.
•
Do not route the power cord where it can be walked on or pinched by items placed
against it. Pay particular attention to the plug, electrical outlet, and the point where
the cord extends from the server.
WARNING: To reduce the risk of personal injury from hot surfaces, allow the drives and
the internal system components to cool before touching them.
CAUTION: Do not operate the server for long periods with the access panel open or removed. Operating
the server in this manner results in improper airflow and improper cooling that can lead to thermal damage.
Preparation procedures
To access some components and perform certain service procedures, you must perform one or more of the
following procedures:
•
Extend the server from the rack, if applicable
If you are performing service procedures in an HP, Compaq branded, telco, or third-party rack
cabinet, you can use the locking feature of the rack rails to support the server and gain access to
internal components.
("Extend the server from the
Removal and replacement procedures 25
rack" on page 26).
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