14.Outdoor Antenna Grounding – If an out- side antenna or cable system is connected to the appliance, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and
15.Lightning – For added protection for the appliance 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 appliance due to lightning and
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, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal.
17.Overloading – Do not overload wall out- lets, extension cords, or integral conve- nience receptacles as this can result in a risk of fire or electric shock.
18.Object and Liquid Entry – Never push objects of any kind into the appliance through openings as they may touch dan- gerous voltage points or
19.Servicing – Do not attempt to service the appliance yourself as opening or remov- ing covers may expose you to dangerous voltage or other hazards. Refer all servic- ing to qualified service personnel.
20.Damage Requiring Service – Unplug the appliance form the wall outlet and refer servicing to qualified service personnel under the following conditions:
A.When the
B.If liquid has been spilled, or objects have fallen into the appliance,
C.If the appliance has been exposed to rain or water,
D.If the appliance does not operate nor- mally by following the operating instructions. Adjust only those con- trols 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 appliance to its normal operation,
E.If the appliance has been dropped or damaged in any way, and
F.When the appliance exhibits a distinct change in performance – this indicates a need for service.
21.Replacement Parts – When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or 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 the appliance, ask the service technician to perform safety checks to determine that the appliance is in proper operation condition.
23.Wall or Ceiling Mounting – The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.
24.Heat – The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.
FIGURE 1:
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE, ANSI/NFPA 70
ANTENNA
LEAD IN
WIRE
GROUND
CLAMP
ELECTRIC
SERVICE EQUIPMENT
ANTENNA DISCHARGE UNIT (NEC SECTION
GROUNDING CONDUCTORS (NEC SECTION
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM (NEC ART 250, PART H)
NEC – NATIONAL ELECTRICAL CODE
S2898A
3
