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Safety Requirements
An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure
Warning
that no exposed portion of the DC-input power source wire extends from the terminal block plug.
This equipment is intended to be grounded. Ensure that the host is connected to earth ground during
Warning
normal use.
Warning
Metal objects heat up when connected to power and ground, and can cause serious burns.
Warning
To prevent personal injury or damage to the chassis, lift the unit only by grasping the chassis
underneath its lower edge.
Warning
Never attempt to lift the chassis with the handles on the power supplies, fan trays, or the switching
modules. These handles are not designed to support the weight of the chassis. Using them to lift or
support the chassis can result in severe damage to the equipment and serious bodily injury.
Two people are required to lift the chassis. Use the handles on the chassis sides. To prevent injury,
Warning
keep your back straight and lift with your legs, not your back. To prevent damage to the chassis and
components, never attempt to lift the chassis with the handles on the power supplies, the filter
module, or on the blower assembly. These handles are not designed to support the weight of
the chassis.
If you use wiring terminations, use only the recommended ferrules. These terminations should be the
Warning
appropriate size for the wires and should clamp the conductor firmly.
Before connecting or disconnecting ground or power wires to the chassis, ensure that power is
Warning
removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel
board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch
handle of the circuit breaker in the OFF position. Use a voltmeter to test for 0 (zero) voltage at the
power terminals on the chassis.
Warning
This unit has more than one power supply connection; all connections must be removed completely
to completely remove power from the unit.
Warning
Only a DC power source that is isolated from AC mains with reinforced insulation, and that complies
with the other safety extra-low voltage (SELV) requirements in one or more of the following: UL 60950,
UL1950, CSA 950, EN 60950, and IEC950, can be connected to a Cisco 6260 system. This requirement
ensures that in a catastrophic power source fault condition, hazardous voltages are not present on
power terminals and connectors.
Cisco 6260 Hardware Installation Guide
2-6
Chapter 2
Preparing for Installation
OL-2365-02
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