Owners Manual
• Provide a suitable power source with electrical overload protection. All Storage Center components must be grounded before applying
power. Make sure that a safe electrical earth connection can be made to power supply cords. Check the grounding before applying
power.
• The plugs on the power supply cords are used as the main disconnect device. Make sure that the socket outlets are located near the
equipment and are easily accessible.
• Know the locations of the equipment power switches and the room's emergency power-o switch, disconnection switch, or electrical
outlet.
• Do not work alone when working with high-voltage components.
• Use rubber mats specically designed as electrical insulators.
• Do not remove covers from the power supply unit. Disconnect the power connection before removing a power supply from the
expansion enclosure.
• Do not remove a faulty power supply unless you have a replacement model of the correct type ready for insertion.
• Unplug the expansion enclosure chassis before you move it or if you think it has become damaged in any way. When powered by
multiple AC sources, disconnect all power sources for complete isolation.
Electrostatic Discharge Precautions
Always follow electrostatic discharge (ESD) precautions to avoid injury and damage to Storage Center equipment.
Electrostatic discharge (ESD) is generated by two objects with dierent electrical charges coming into contact with each other. The
resulting electrical discharge can damage electronic components and printed circuit boards. Follow these guidelines to protect your
equipment from ESD:
• Dell recommends that you always use a static mat and static strap while working on components in the interior of the chassis.
• Observe all conventional ESD precautions when handling plug-in modules and components.
• Use a suitable ESD wrist or ankle strap.
• Avoid contact with backplane components and module connectors.
• Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready for use.
General Safety Precautions
Always follow general safety precautions to avoid injury and damage to Storage Center equipment.
• Keep the area around the expansion enclosure chassis clean and free of clutter.
• Place any system components that have been removed away from the expansion enclosure chassis or on a table so that they are not in
the way of other people.
• While working on the expansion enclosure chassis, do not wear loose clothing such as neckties and unbuttoned shirt sleeves. These
items can come into contact with electrical circuits or be pulled into a cooling fan.
• Remove any jewelry or metal objects from your body. These items are excellent metal conductors that can create short circuits and
harm you if they come into contact with printed circuit boards or areas where power is present.
• Do not lift the expansion enclosure chassis by the handles of the power supply units (PSUs). They are not designed to hold the weight
of the entire chassis, and the chassis cover could become bent.
• Before moving the expansion enclosure chassis, remove the PSUs to minimize weight.
• Do not remove drives until you are ready to replace them.
NOTE
: To ensure proper expansion enclosure cooling, hard drive blanks must be installed in any hard drive slot that is not
occupied.
12 SC460 Expansion Enclosure Installation