6.0 HP X9720 Network Storage System Administrator Guide (AW549-96034, December 2011)

WARNING! To reduce the risk of personal injury or damage to the equipment:
• Observe local occupational safety requirements and guidelines for heavy equipment handling.
• Obtain adequate assistance to lift and stabilize the product during installation or removal.
• Extend the leveling jacks to the floor.
• Rest the full weight of the rack on the leveling jacks.
• Attach stabilizing feet to the rack if it is a single-rack installation.
• Ensure the racks are coupled in multiple-rack installations.
• Fully extend the bottom stabilizers on the equipment. Ensure that the equipment is properly
supported/braced when installing options and boards.
• Be careful when sliding rack components with slide rails into the rack. The slide rails could
pinch your fingertips.
• Ensure that the rack is adequately stabilized before extending a rack component with slide
rails outside the rack. Extend only one component at a time. A rack could become unstable
if more than one component is extended for any reason.
WARNING! Verify that the AC power supply branch circuit that provides power to the rack is
not overloaded. Overloading AC power to the rack power supply circuit increases the risk of
personal injury, fire, or damage to the equipment. The total rack load should not exceed 80 percent
of the branch circuit rating. Consult the electrical authority having jurisdiction over your facility
wiring and installation requirements.
Device warnings and precautions
WARNING! To reduce the risk of electric shock or damage to the equipment:
• Allow the product to cool before removing covers and touching internal components.
• 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.
• Disconnect power from the device by unplugging the power cord from either the electrical
outlet or the device.
• Do not use non-conductive tools that could bridge live parts.
• Remove all watches, rings, or loose jewelry when working in hot-plug areas of an energized
device.
• Install the device in a controlled access location where only qualified personnel have access
to the device.
• Power off the equipment and disconnect power to all AC power cords before removing any
access covers for non-hot-pluggable areas.
• Do not replace non-hot-pluggable components while power is applied to the product. Power
off the device and then disconnect all AC power cords.
• Do not exceed the level of repair specified in the procedures in the product documentation.
All troubleshooting and repair procedures are detailed to allow only subassembly or
module-level repair. Because of the complexity of the individual boards and subassemblies,
do not attempt to make repairs at the component level or to make modifications to any printed
wiring board. Improper repairs can create a safety hazard.
174 Warnings and precautions