Removing a 5U92 disk enclosure from a rack
You might need to slide the 5U92 disk enclosure out of the rack to apply service. For some tasks, you
might need to completely remove the expansion enclosure from the rack.
Before you begin
DANGER: Multiple power cords. The product might be equipped with multiple AC power cords or
multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and
power cables. (L003)
Use the reference numbers in parentheses at the end of each notice (for example, D005) to find the
matching translated notice in IBM Systems Safety Notices.
DANGER:
Observe the following precautions when working on or around your IT rack system:
• Heavy equipment–personal injury or equipment damage might result if mishandled.
• Always lower the leveling pads on the rack cabinet.
• Always install stabilizer brackets on the rack cabinet.
• To avoid hazardous conditions due to uneven mechanical loading, always install the heaviest
devices in the bottom of the rack cabinet. Always install servers and optional devices starting
from the bottom of the rack cabinet.
• Rack-mounted devices are not to be used as shelves or work spaces. Do not place objects on top
of rack-mounted devices.
• Each rack cabinet might have more than one power cord. Be sure to disconnect all power cords in
the rack cabinet when directed to disconnect power during servicing.
• Connect all devices installed in a rack cabinet to power devices installed in the same rack
cabinet. Do not plug a power cord from a device installed in one rack cabinet into a power device
installed in a different rack cabinet.
• An electrical outlet that is not correctly wired could place hazardous voltage on the metal parts of
the system or the devices that attach to the system. It is the responsibility of the customer to
ensure that the outlet is correctly wired and grounded to prevent an electrical shock. (R001 part 1
of 2)
Chapter 3. Maintaining the system hardware 69
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