Rack Mounting Of Systems - Dell PowerConnect 3048 User Manual

Do not modify power cables or plugs. Consult a licensed electrician or your power company for site
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modifications. Always follow your local/national wiring rules.
When connecting or disconnecting power to hot-pluggable power supplies, if offered with your
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system, observe the following guidelines:
Install the power supply before connecting the power cable to the power supply.
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Unplug the power cable before removing the power supply.
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If the system has multiple sources of power, disconnect power from the system by unplugging
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all power cables from the power supplies.
Move products with care; ensure that all casters and/or stabilizers are firmly connected to the system.
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Avoid sudden stops and uneven surfaces.

Rack Mounting of Systems

Observe the following precautions for rack stability and safety. Also refer to the rack installation
documentation accompanying the system and the rack for specific caution statements and procedures.
Systems are considered to be components in a rack. Thus, "component" refers to any system as well as to
various peripherals or supporting hardware.
CAUTION: Installing systems in a rack without the front and side stabilizers installed could cause
the rack to tip over, potentially resulting in bodily injury under certain circumstances. Therefore,
always install the stabilizers before installing components in the rack.
After installing system/components in a rack, never pull more than one component out of the rack
on its slide assemblies at one time. The weight of more than one extended component could cause
the rack to tip over and may result in serious injury.
NOTE: Your system is safety-certified as a free-standing unit and as a component for use in a Dell rack
cabinet using the customer rack kit. The installation of your system and rack kit in any other rack cabinet has
not been approved by any safety agencies. It is your responsibility to have the final combination of system
and rack kit in a rack cabinet evaluated for suitability by a certified safety agency. Dell disclaims all liability
and warranties in connection with such combinations.
System rack kits are intended to be installed in a rack by trained service technicians. If you install the
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kit in any other rack, be sure that the rack meets the specifications of a Dell rack.
CAUTION: Do not move racks by yourself. Due to the height and weight of the rack, a minimum of
two people should accomplish this task.
Before working on the rack, make sure that the stabilizers are secured to the rack, extended to the
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floor, and that the full weight of the rack rests on the floor. Install front and side stabilizers on a single
rack or front stabilizers for joined multiple racks before working on the rack.
Always load the rack from the bottom up, and load the heaviest item in the rack first.
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Make sure that the rack is level and stable before extending a component from the rack.
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Use caution when pressing the component rail release latches and sliding a component into or out of
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a rack; the slide rails can pinch your fingers.
After a component is inserted into the rack, carefully extend the rail into a locking position, and then
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slide the component into the rack.
Do not overload the AC supply branch circuit that provides power to the rack. The total rack load
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should not exceed 80 percent of the branch circuit rating.
Ensure that proper airflow is provided to components in the rack.
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Do not step on or stand on any component when servicing other components in a rack.
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