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information with respect to proper grounding of
the mast and supporting structure, grounding of
the lead-in wire to an antenna-discharge unit,
connection to grounding electrodes, and
requirements for the grounding electrode. See
example as shown.
14 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.
15 Lightning
For added protection for this unit 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 unit due to lightning
and power line surges.
16 Disc Tray
Keep your fingers well clear of the disc as it is
closing. It may cause serious personal injury.
17 Overloading
Do not overload wall outlets of extension cords as
this can result in a risk of fire or electric shock.
18 Object and Liquid Entry
Never push objects of any kind into this unit
through openings as they may touch dangerous
voltage points or Òshort-outÓ parts that could
result in a fire or electric shock. Never spill liquid
of any kind on the unit.
19 BURDEN
Do not place a heavy object on or step on the
product. The object may fall, causing serious
personal injury and serious damage to the product.
20 DISC
Do not use a cracked, deformed or repaired disc.
These discs are easily broken and may cause
serious personal injury and product malfunction.
21 Servicing
Do not attempt to service this unit yourself as
opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all
servicing to qualified service personnel.
22 Damage Requiring Service
Unplug this unit 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 unit.
C If the unit has been exposed to rain or water.
D If the unit 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 unit to its normal operation.
E If the unit has been dropped or the cabinet has
been damaged.
F When the unit exhibits a distinct change in
performance-this indicates a need for service.
23 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 unit manufacturer can prevent fire, electric
shock, or other hazards.
24 Safety Check
Upon completion of any service or repairs to this
unit, ask the service technician to perform safety
checks recommended by the manufacturer to
determine that the unit is in safe operating
condition.
25 Wall or Ceiling Mounting
The product should be mounted to a wall or ceiling
only as recommended by the manufacturer.
26 Heat
The product should be situated away from heat
sources such as radiators, heat registers, stoves, or
other products (including amplifiers) that produce
heat.
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
ANTENNA LEAD
IN WIRE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250 PART H)
GROUND CLAMP
ELECTRIC
SERVICE
EQUIPMENT
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
EXAMPLE OF ANTENNA
GROUNDING
NEC - NATIONAL ELECTRICAL CODE
Important Safeguards
DR-C91/92D1N-BS 04.1.19 9:51 PM ˘`3