Lenovo 9308-4PX Installation Manual page 9

DANGER
• Plug power cords from devices in the rack cabinet into electrical outlets that are located near the
rack cabinet and are easily accessible.
• Each rack cabinet might have more than one power cord. Be sure to disconnect all power cords
in the rack cabinet before servicing any device in the rack cabinet.
• Install an emergency-power-off switch if more than one power device (power distribution unit or
uninterruptible power supply) is installed in the same rack cabinet.
• 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.
Statement 10
CAUTION:
Removing components from the upper positions in the Enterprise Rack cabinet improves rack
stability during relocation. Follow these general guidelines whenever you relocate a populated rack
cabinet within a room or building:
• Reduce the weight of the rack cabinet by removing equipment starting at the top of the rack
cabinet. When possible, restore the rack cabinet to the configuration of the rack cabinet as you
received it. If this configuration is not known, you must do the following:
– Remove all devices in the 32U position and above.
– Ensure that the heaviest devices are installed in the bottom of the rack cabinet.
– Ensure that there are no empty U-levels between devices installed in the rack cabinet below the
32U level.
• If the rack cabinet you are relocating is part of a suite of rack cabinets, detach the rack cabinet
from the suite.
• Inspect the route that you plan to take to eliminate potential hazards.
• Verify that the route that you choose can support the weight of the loaded rack cabinet. Refer to the
documentation that comes with your rack cabinet for the weight of a loaded rack cabinet.
• Verify that all door openings are at least 760 x 2030 mm (30 x 80 in.)
• Ensure that all devices, shelves, drawers, doors, and cables are secure.
• Ensure that the four leveling pads are raised to their highest position.
• Ensure that there is no stabilizer bracket installed on the rack cabinet.
• Do not use a ramp inclined at more than ten degrees.