10
SmartNode 5540 & 4140 Series User Manual
Safety when working with electricity
The alert symbol and WARNING heading indicate a potential safety hazard.
Strictly follow the warning instructions to avoid personal injury.
The shock hazard symbol and CAUTION heading indicate a potential electric shock haz-
ard. Strictly follow the instructions to avoid property damage caused by electric shock.
The alert symbol and CAUTION heading indicate a potential hazard. Strictly follow the
instructions to avoid property damage.
The SmartNode device contains no user serviceable parts, and is not be opened
by the user. The equipment shall be returned to Patton Electronics for repairs or
repaired by qualified service personnel.
Mains Voltage: In systems without a power switch, line voltages are present in the
power supply when the power cord is connected. The mains outlet used to power
the SmartNode device shall be within 10 feet (3 meters) of the device, be easily
accessible, and protected by a circuit breaker.
For AC powered units, ensure that the power cable used meets all applicable stan-
dards for the country in which it is to be installed, and that it is connected to a wall
outlet which has earth ground.
For units with an external power adapter, the adapter shall be a listed Limited
Power Source.
Hazardous network voltages are present in WAN ports regardless of whether
power to the SmartNode is ON or OFF. To avoid electric shock, use caution when
near WAN ports. When detaching the cables, detach the end away from the Smart-
Node first.
Before handling the device, disconnect the telephone network cables to avoid
contact with telephone line voltages. When detaching the cables, detach the end
away from the SmartNode device first.
WARNING
CAUTION
CAUTION
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
