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12. Outdoor Antenna Grounding—If an outside
antenna or cable system is connected to the
video product, be sure the antenna or cable
system is grounded so as to provide some
protection against voltage surges and built-up
static charges. Section 810 of the National
Electrical Code, ANSI/NFPA No. 70-1984
(Section 54 of Canadian Electrical Code, Part 1)
provides information with respect to proper
grounding of the mast and supporting structure,
grounding of the lead-in wire to an antenna-
discharge unit, size of grounding conductors,
location of antenna-discharge unit, connection
to grounding electrodes, and requirements for
the grounding electrode. See example below.
Example of Antenna Grounding
13. Power Lines—An outside antenna system
should not be located in the vicinity of overhead
power lines, other electric light or power
circuits, or where it can fall into such power
lines or circuits. When installing an outside
antenna system, extreme care should be taken to
keep from touching or approaching such power
lines or circuits as contact with them might be
fatal. Installing an outdoor antenna can be
hazardous and should be left to a professional
antenna installer.
Use
14. Cleaning—Unplug this video product from the
wall outlet before cleaning. Do not use liquid
cleaners or aerosol cleaners. Use a damp cloth
for cleaning.
15. Object and Liquid Entry—Never push objects
of any kind into this video product through
openings as they may touch dangerous voltage
points or “short-out” parts that could result in a
fire or electric shock. Never spill liquid of any
kind on the video product.
16. Lightning—For added protection for this video
product during a lightning storm, or when it is
left unattended and unused for long periods of
time, unplug it from the wall outlet and
disconnect the antenna or cable system. This
will prevent damage to the video product due to
lightning and power line surges.
Service
17. Servicing—Do not attempt to service this video
product yourself as opening or removing covers
may expose you to dangerous voltage or other
hazards. Refer all servicing to qualified service
personnel.
18. Conditions Requiring Service—Unplug this
video product from the wall outlet and refer
servicing to qualified service personnel under
the following conditions.
A.When the power-supply cord or plug is
damaged.
B. If liquid has been spilled, or objects have
fallen into the video product.
C. If the video product has been exposed to rain
or water.
D.If the video product does not operate
normally by following the operating
instructions. Adjust only those controls that
are covered by the operating instructions.
Improper adjustment of other controls may
result in damage and will often require
extensive work by a qualified technician to
restore the video product to its normal
operation.
E. If the video product has been dropped or the
case has been damaged.
F. When the video product exhibits a distinct
change in performance—this indicates a need
for service.
19. Replacement Parts—When replacement parts
are required, have the service technician verify
that the replacements he uses have the same
safety characteristics as the original parts. Use
of replacements specified by the video product
manufacturer can prevent fire, electric shock, or
other hazards.
20. Safety Check—Upon completion of any
service or repairs to this video product, ask the
service technician to perform safety checks
recommended by the manufacturer to determine
that the video product is in safe operating
condition.
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IMPORTANT SAFEGUARDS (continued)
ANTENNA
LEAD IN
WIRE
GROUND CLAMP
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
ELECTRIC SERVICE
EQUIPMENT
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)