Important Safety Instructions - Cisco 4240HDC Manual

IMPORTANT SAFETY INSTRUCTIONS

Read These Instructions
Keep These Instructions
Heed All Warnings
Follow All Instructions
Power Source Warning
A label on this product indicates the correct
power source for this product. Operate this
product only from an electrical outlet with the
voltage and frequency indicated on the product
label. If you are uncertain of the type of power
supply to your home or business, consult your
service provider or your local power company.
Ground the Product
WARNING: Avoid electric shock
and fi re hazard! Do not defeat the
safety purpose of the polarized or
grounding-type plug. A polarized plug
has two blades with one wider than the
other. A grounding-type plug has two
blades and a third grounding prong.
The wide blade or the third prong is
provided for your safety. If the provided
plug does not fi t into your outlet,
consult an electrician for replacement
of the obsolete outlet.
If this product connects to coaxial cable wiring,
be sure the cable system is grounded (earthed).
Grounding provides some protection against
voltage surges and built-up static charges.
Outdoor Grounding System
If this product connects to an outdoor antenna
or cable system, be sure the antenna or cable
system is grounded (earthed). This provides
some protection against voltage surges and
built-up static charges.
Article 810 of the National Electric Code
(NEC) ANSI/NFPA No. 70-1990, provides the
following information:
• Grounding of the mast and supporting
structure
• Grounding the lead-in wire to an antenna
discharge unit
• Size of the grounding conductors
• Location of the antenna-discharge unit
• Connection to grounding electrodes
• Requirements for the grounding electrodes
(see the following antenna grounding diagram
as recommended by NEC ANSI/NFPA 70)
Ground Clamps
Electric Service
Equipment
NEC = National Electrical Code 1990
National Fire Protection Association
TO CATV INSTALLER
This reminder is provided to call the CATV system installer's attention
to Article 820-40 of the National Electrical Code (NEC) that provides
guidelines for proper grounding, and in particular, specifies that the
cable ground shall be connected to the grounding system of the
building, as close to the point of entry as practical.
WARNING: Avoid electric shock
and fi re hazard! Do not locate an
outside antenna system in the vicinity
of overhead power lines or power
circuits. Touching power lines or
circuits might be fatal.
Protect the Product from Lightning
For added protection, unplug this apparatus
during lightning storms or when unused for long
periods of time. In addition to disconnecting the
AC power from the wall outlet, disconnect the
signal inputs.
Verify the Power Source from the
On/Off Power Light
When the on/off power light is not illuminated,
the apparatus may still be connected to the
power source. The light goes out when the
apparatus is turned off , regardless of whether
it is still plugged into an AC power source.
Eliminate Power/AC Mains
Overloads
WARNING: Avoid electric shock
and fi re hazard! Do not overload AC
power/mains, outlets, extension cords,
or integral convenience receptacles.
For products that require battery power
or other power sources to operate
them, refer to the operating instructions
for those products.
Antenna Lead In Wire
Antenna Discharge
Unit
(NEC Section 810-21)
Grounding
Conductors
(NEC Section 810-20)
Ground Clamps
Power Service
Grounding
Electrode System
(NEC Art 250, Part H)
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