3Com 8800 Installation Manual page 14

14 C 3: S
HAPTER AFETY
electrical equipment and who understand the hazards that can arise when
working on this equipment.
The PoE Power Rack can be powered by multiple AC inputs, ensure that the
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appropriate circuit protection device for each AC input being serviced is
disconnected before changing or servicing a Power Supply Module. If servicing the
PoE Power Rack, all the AC power cords must be removed from the equipment.
High leakage currents may be possible on this type of equipment. Make sure the
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equipment is properly grounded before connecting AC input power. Use only
properly grounded AC power cords.
Hazardous energy and voltages are present in the device and on the DC output
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cables that can shock or cause serious injury. Follow all safety warnings and
practices when servicing this equipment. Insure that the PoE Power Rack AC
power cords are unplugged from the PoE Power Rack before connecting the DC
output cables to the PoE Power Rack and the Switch 8800.
Exercise care when servicing this area.
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In addition to proper job training and safety procedures, the following are some basic
precautions that should always be used:
Use only properly insulated tools.
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Remove all metallic objects (key chains, glasses, rings, watches, or jewelry).
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Wear safety glasses.
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Test circuits before touching.
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Lock out and tag any circuit breakers/fuses when possible to prevent accidental
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turn on.
Be aware of potential hazards before servicing equipment.
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Identify exposed hazardous electrical potentials on connectors or, wirings. (Note
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the condition of these circuits, especially any wiring).
Be careful when removing or replacing any covers - avoid contacting any circuits.
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