3Com External PoE Power System PSE2500-A3 - Manual (Page 20)

User Manual
PSE2500-A3 External PoE
Power System
Chapter 3 Safety
3-3
3.3 Precautions
When working on this type of equipment, the following
precautions must be noted:
z This unit must be installed, serviced, and operated only by
skilled and qualified personnel who have the necessary
knowledge and practical experience with electrical
equipment and who understand the hazards that can arise
when working on this equipment.
z
The PSE2500-A3 system can be powered by multiple AC
inputs. Ensure that the appropriate circuit protection device
for each AC input being serviced is disconnected before
servicing the equipment.
z High leakage currents may be possible on this type of
equipment. Make sure the equipment is properly earth
grounded before connecting power.
z Hazardous energy and voltages are present in the device
and on the interface cables that can shock or cause serious
injury. Follow all safety warnings and practices when
servicing this equipment.
z Exercise care when servicing this area.
In addition to proper job training and safety procedures, the
following are some basic precautions that should always be used:
z Use only properly insulated tools.
z
Remove all metallic objects (key chains, glasses, rings,
watches, or jewelry, and so on).
z
Wear safety glasses.
z Test circuits before touching.