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• System rack kits are intended to be installed in a Dell rack by trained service tech-
nicians. If you install the kit in any other rack, be sure that the rack meets the
specifications of a Dell rack.
• Do not move large racks by yourself. Due to the height and weight of the rack,
Dell recommends a minimum of two people to accomplish this task.
• Before working on the rack, make sure that the stabilizers are secure to the rack,
extend to the 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.
• Make sure that the rack is level and stable before extending a component from
the rack.
• Use caution when pressing the component rail release latches and sliding a
component into or out of 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 slide the component into the rack.
• Do not overload the AC supply branch circuit that provides power to the rack. The
total rack load should not exceed 80 percent of the branch circuit rating.
• Ensure that proper airflow is provided to components in the rack.
• Do not step on or stand on any system/component when servicing other
systems/components in a rack.
Precautions for Products With Modems,
Telecommunications, or Local Area Network Options
Observe the following guidelines when working with options:
• Do not connect or use a modem or telephone during a lightning storm. There
may be a risk of electrical shock from lightning.
• Never connect or use a modem or telephone in a wet environment.
• Do not plug a modem or telephone cable into the network interface controller
(NIC) receptacle.
• Disconnect the modem cable before opening a product enclosure, touching or
installing internal components, or touching an uninsulated modem cable or jack.
• Donotusea telephonelinetoreportagasleakwhileyouareinthevicinityoftheleak.
Precautions for Products With Laser Devices
Observe the following precautions for laser devices:
• Do not open any panels, operate controls, make adjustments, or perform proce-
dures on a laser device other than those specified in the product’s
documentation.
• Only authorized service technicians should repair laser devices.