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14.
15.
Protective Attachment Plug-The product is
equipped with an attachment plug having
overload protection. This is a safety feature.
See Instruction Manual for replacement or
resetting of protective device. If replacement
of the plug is required, be sure the service
technician has used a replacement plug
specified by the manufacturer that has the
same overload protection as the original plug.
Outdoor Antenna Grounding-If an outside
antenna or cable system is connected to the
product, be sure the antenna or cable system
is grounded so as to provide some protection
against voltage surges and built-up static
charges. Article 810 of the National Electrical
Code ANSI/NFPA 70, provides information
with regard to proper grounding of the mast
an 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 Figure 131.1.
FIGURE 131.1
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE ANSI/NFPA 70
ANTENNA
LEAD IN
WIRE
GROUND
CLAMP
A_NTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
I EQUIPMENT _ J _,GROUNDING
F[L_,_/ CONDUCTORS (NEC SECTION 810-21)
] _ GROUND CLAMPS
_""-_-_- POWER SERVICE GROUNDING
NEC NATIONAL ELECTRICAL CODE ELECTRODE SYSTEM
(NEC ART 250 PART H)
$2898A
16. Lightning-For added protection for this
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 product due to
lightning and power-line surges.
17. Power Lines-An outside antenna system
should not be located in the vicinity of
overhead power lines or other electric light or
power circuits, or where it can fall into such
power lines or circuits. When instaling an
outside antenna system, extreme care should
be taken to keep from touching 6uch power
lines or circuits as contact with them might be
fatal.
18. Overloading-Do not overload wall outlets and
extension cords as this can result in a risk of
fire or electric shock.
-4-
19. Object and Liquid Entry-Never push objects
of any kind into this 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 product.
20. Servicing-Do not attempt to service this
product yourself as opening or removing
covers may expose you to dangerous voltage
or other hazards. Refer all servicing to
qualified service personnel.
21. Damage Requiring Service-Unplug this
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 product.
c. If the product has been exposed to rain or
water.
d. If the product does not operate normally by
following the operating instructions. Adjust
_nly those controls that are covered by the
operating instructions as an improper
adjustment of other controls may result in
damage and will often require extensive
work by a qualified technician to restore
the product to its normal operation. •
e. If te product has been dropped or the
cabinet has been damaged.
f. When the product exhibits a distinct
change in performance-this.indicates a
need for service.
22. Replacement Parts-When replacement parts
are required, be sure the service technician
has used replacement parts specified by the
manufacturer or have the same charact-
eristics as the original part. Unauthorized
substitutions may result in fire, electric shock,
or other hazards.
23. Safety Check-Upon completion of any
service or repairs to this product, ask the
service technician to perform safety checks to
determine that the product is in proper
operating condition.
24. Wall or Ceiling Mounting-The product
should be mounted to a wall or ceiling only as
recommended by the manufacturer.
25. Heat-The product should be situated away
from heat sources such as radiators, heat
registers, stoves, or other products (including
amplifiers) that produce heat.