IBM TS2900 Manual page 117

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. In addition, do not lean on rack mounted
devices and do not use them to stabilize your body position (for example, when working from a ladder).
Each rack cabinet might have more than one power cord.
For AC powered racks, be sure to disconnect all power cords in the rack cabinet when directed to disconnect power during servicing.
For racks with a DC power distribution panel (PDP), turn off the circuit breaker that controls the power to the system unit(s), or disconnect the customer's DC
power source, 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)
Caution
Do not install a unit in a rack where the internal rack ambient temperatures might exceed the manufacturer's recommended ambient temperature for all your rack-
mounted devices.
Do not install a unit in a rack where the air flow is compromised. Ensure that air flow is not blocked or reduced on any side, front, or back of a unit that is used for air
flow through the unit.
Consideration must be given to the connection of the equipment to the supply circuit so that overloading of the circuits does not compromise the supply wiring or
overcurrent protection. To provide the correct power connection to a rack, refer to the rating labels on the equipment in the rack to determine the total power
requirement of the supply circuit.
(For sliding drawers) Do not pull out or install any drawer or feature if the rack stabilizer brackets are not attached to the rack. Do not pull out more than one drawer
at a time. The rack might become unstable if you pull out more than one drawer at a time.
(For fixed drawers) This drawer is a fixed drawer and must not be moved for servicing unless specified by the manufacturer. Attempting to move the drawer partially
or out of the rack might cause the rack to become unstable or cause the drawer to fall out of the rack. (R001 part 2 of 2)
Caution
Removing components from the upper positions in the 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 (compliance ID RACK-001) or 22U (compliance ID RR001) and above.
Ensure that the heaviest devices are installed in the bottom of the rack cabinet.
Ensure that there are little-to-no empty U-levels between devices installed in the rack-cabinet below the 32U (compliance ID RACK-001) or 22U (compliance
ID RR001) level, unless the received configuration specifically allowed it.
If the rack cabinet you are relocating is part of a suite of rack cabinets, detach the rack cabinet from the suite.
If the rack cabinet you are relocating was supplied with removable outriggers, they must be reinstalled before the cabinet is relocated.
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 2032 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 no stabilizer bracket is installed on the rack cabinet during movement.
Do not use a ramp that is inclined at more than 10 degrees.
When the rack cabinet is in the new location, complete these steps.
Lower the four leveling pads.
112 TS2900 Tape Autoloader