Patton electronic 2173 - Manual (Page 6)

6
1.6 SAFETY WHEN WORKING WITH ELECTRICITY
• This device contains no user serviceable parts. This
device can only be repaired by qualified service per-
sonnel.
• Do not open the device when the power cord is con-
nected. For systems without a power switch and without
an external power adapter, line voltages are present
within the device when the power cord is connected.
• For devices with an external power adapter, the power
adapter shall be a listed Limited Power Source. The
mains outlet that is utilized to power the device shall be
within 10 feet (3 meters) of the device, shall be easily
accessible, and protected by a circuit breaker in com-
pliance with local regulatory requirements.
• For AC powered devices, ensure that the power cable
used meets all applicable standards for the country in
which it is to be installed.
• For AC powered devices which have 3 conductor
power plugs (L1, L2 & GND or Hot, Neutral &
Safety/Protective Ground), the wall outlet (or socket)
must have an earth ground.
• For DC powered devices, ensure that the interconnect-
ing cables are rated for proper voltage, current, antici-
pated temperature, flammability, and mechanical
serviceability.
• WAN, LAN & PSTN ports (connections) may have haz-
ardous voltages present regardless of whether the
device is powered ON or OFF. PSTN relates to inter-
faces such as telephone lines, FXS, FXO, DSL, xDSL,
T1, E1, ISDN, Voice, etc. These are known as “hazard-
ous network voltages” and to avoid electric shock use
caution when working near these ports. When discon-
necting cables for these ports, detach the far end con-
nection first.
• Do not work on the device or connect or disconnect
cables during periods of lightning activity.
WARNING