Zenith vra423c Guia De Utilização
IMPORTANT SAFETY INSTRUCTIONS
14. 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 volt-
age surges and built-up static charges. Article 810 of
the National Electrical Code (U.S.A.), ANSI/NFPA 70 pro-
vides information with regard 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 require-
ments for the grounding electrode.
the product, be sure the antenna or cable system is
grounded so as to provide some protection against volt-
age surges and built-up static charges. Article 810 of
the National Electrical Code (U.S.A.), ANSI/NFPA 70 pro-
vides information with regard 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 require-
ments for the grounding electrode.
15. Lightning
For added protection for this product (receiver) 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.
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.
16. 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 installing an outside antenna
system, take extreme care to keep from touching such
power lines or circuits as contact, with them might be
fatal.
vicinity of overhead power lines or other electric light
or power circuits, or where it can fall into such power
lines or circuits. When installing an outside antenna
system, take extreme care to keep from touching such
power lines or circuits as contact, with them might be
fatal.
17. Overloading
Do not overload wall outlets and extension cords, as
this can result in a risk of fire or electric shock.
this can result in a risk of fire or electric shock.
18. 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.
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.
19. Servicing
Do not attempt to service this product yourself, as
opening or removing covers may expose you to danger-
ous voltage or other hazards. Refer all servicing to qual-
ified service personnel.
opening or removing covers may expose you to danger-
ous voltage or other hazards. Refer all servicing to qual-
ified service personnel.
20. Damage Requiring Service
Unplug this product from the wall outlet and refer ser-
vicing to qualified service personnel under the following
conditions:
a. If the power-supply cord or plug is damaged.
vicing to qualified service personnel under the following
conditions:
a. If 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 follow-
ing the operating instructions. Adjust only those
controls that are covered by the operating instruc-
tions; 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.
controls that are covered by the operating instruc-
tions; 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 the product has been dropped or the cabinet has
been damaged.
f. If the product exhibits a distinct change in perfor-
mance.
21. Replacement Parts
When replacement parts are required, be sure the service
technician has used replacement parts specified by the
manufacturer or that have the same characteristics as
the original part. Unauthorized substitutions may result
in fire, electric shock, or other hazards.
technician has used replacement parts specified by the
manufacturer or that have the same characteristics as
the original part. Unauthorized substitutions may result
in fire, electric shock, or other hazards.
22. Safety Check
Upon completion of any service or repairs to this prod-
uct, ask the service technician to perform safety
checks to determine that the product is in proper oper-
ating condition.
uct, ask the service technician to perform safety
checks to determine that the product is in proper oper-
ating condition.
23. Wall or Ceiling Mounting
Mount the product to a wall or ceiling only as recom-
mended by the manufacturer.
mended by the manufacturer.
24. Heat
The product should be situated away from heat sources
such as radiators, heat registers, stoves, or other prod-
ucts (including amplifiers) that produce heat.
such as radiators, heat registers, stoves, or other prod-
ucts (including amplifiers) that produce heat.
Antenna Lead in Wire
Antenna Discharge Unit
(NEC Section 810-20)
(NEC Section 810-20)
Grounding Conductors
(NEC Section 810-21)
(NEC Section 810-21)
Ground Clamps
Power Service Grounding
Electrode System
(NEC Art 250, Part H)
Electrode System
(NEC Art 250, Part H)
Ground
Clamp
Electric Service
Equipment
NEC - NATIONAL ELECTRICAL CODE
EXAMPLE OF GROUNDING ACCORDING TO
NATIONAL ELECTRICAL CODE INSTRUCTIONS