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Planning the installation 9
WARNING:
The enclosure is very heavy. To reduce the risk of personal injury or damage to the
equipment:
• Observe local occupational health and safety requirements and guidelines for manual
material handling.
• Remove all installed enclosure components from their enclosures before installing or moving
the enclosures.
• Use caution and get help to lift and stabilize enclosures during installation or removal,
especially when the enclosure is not fastened to the rack.
WARNING: To reduce the risk of personal injury or damage to the equipment, you must
adequately support enclosures during installation and removal.
WARNING: Always use at least two people to lift an enclosure into the rack. If the enclosure is
being loaded into the rack above chest level, a third person must assist with aligning the enclosure
with the rails while the other two people support the weight of the enclosure.
WARNING: Before installing an enclosure in the rack, be sure that all hot-plug power supplies,
server blades, and interconnects are removed from the enclosure. Blanks can be left in the
enclosure.
WARNING: Be sure to install enclosures starting from the bottom of the rack and work your way
up the rack.
These symbols, on power supplies or systems, indicate that the equipment is supplied by
multiple sources of power.
WARNING: To reduce the risk of injury from electric shock, remove all power cords to
completely disconnect power from the system.
• Each enclosure has two or more power supply cords. A single rack or cabinet may
contain more than one enclosure. Power may be supplied in a redundant fashion.
Removing any single source of power does not necessarily remove power from any
portion of the system. When performing any service other than hot-plug module
replacement, you must completely disconnect all power to that portion of the system.
• When performing service procedures on enclosures, shut off the circuit breakers to
both A and B AC power feeds and then disconnect all power cords from the outlets
before servicing.
WARNING: To reduce the risk of personal injury from hot surfaces, allow the drives and the
internal system components to cool before touching them.
WARNING:
To reduce the risk of electric shock or damage to the equipment, enter enclosures or
perform service on system components only as instructed in the user documentation.
WARNING: A risk of electric shock from high leakage current exists. Before connecting the AC
supply to the power enclosures, be sure that the electrical outlets are properly grounded (earthed).
CAUTION: Always be sure that equipment is properly grounded and that you follow proper
grounding procedures before beginning any installation procedure. Improper grounding can
result in ESD damage to electronic components. For more information, refer to, "Electrostatic
discharge (on page 97)."