IBM TS4300 3555 User Manual page 26

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.
xxvi IBM TS4300 Tape Library Machine Type 3555: User's Guide