Important Safeguards

7.Wall or Ceiling Mounting – The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.

8.Ventilation – The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or if placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings, there should be free space of at least 5 cm (2 in.) and an opening behind the appliance.

9.Heat – The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.

10.Power Sources – The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.

11.Polarization – If the appliance is provided with a polarized plug having one blade wider than the other, please read the following information: The polarization of the plug is a safety feature. The polarized plug will only fit the outlet one way. If the plug does not fit fully into the outlet, try reversing it. If there is still trouble, the user should seek the services of a qualified electrician. Under no circumstances should the user attempt to defeat the polarization of the plug.

12.Power-Cord Protection Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, especially near plugs, convenience receptacles, and the point where they exit from the appliance.

13.Cleaning – The appliance should be cleaned only as recommended by the manufacturer.

14.Power Lines – An outdoor antenna should be located away from power lines.

15.Nonuse Periods – The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.

16.Object and Liquid Entry – Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

17. Damage Requiring Service – The appliance

 

should be serviced by qualified service

 

personnel when:

 

A. The power-supply cord or the plug has

 

been damaged; or

 

B. Objects have fallen, or liquid has been

 

 

 

 

 

 

spilled into the appliance; or

 

 

 

C. The appliance has been exposed to rain;

 

 

Before

or

 

 

 

 

 

D. The appliance does not appear to operate

 

 

 

normally or exhibits a marked change in

 

 

Using

performance; or

 

 

 

 

 

E. The appliance has been dropped, or the

 

 

 

enclosure damaged.

 

 

 

18. Servicing – The user should not attempt to

 

 

 

service the appliance beyond that described

 

 

 

 

 

 

in the operating instructions. All other

 

 

 

 

 

servicing should be referred to qualified

 

 

Connections

surges and built up static charges. Article 810

 

 

service personnel.

 

 

 

19. Outdoor Antenna Grounding – If an

 

 

 

outside antenna is connected to the receiver,

 

 

 

be sure the antenna system is grounded so

 

 

 

as to provide some protection against voltage

 

 

 

of the National Electrical Code, ANSI/NFPA 70,

 

 

 

provides 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

 

 

Operation

conductors, location of antenna-discharge

 

 

FIGURE 1:

 

 

unit, connection to grounding electrodes, and

 

 

 

requirements for the grounding electrode. See

 

 

 

Figure 1.

 

 

 

EXAMPLE OF ANTENNA GROUNDING AS PER

 

 

 

NATIONAL ELECTRICAL CODE

 

 

 

 

 

 

 

 

 

ANTENNA

 

 

 

 

 

 

 

 

 

 

 

 

Other

 

 

 

 

 

 

 

 

 

CLAMP

 

 

 

 

 

 

 

 

LEAD IN

 

 

 

 

 

 

 

 

 

WIRE

 

 

 

GROUND

 

 

Information

 

 

 

 

 

 

ANTENNA

 

 

 

 

 

 

 

 

 

DISCHARGE UNIT

 

 

 

 

 

 

 

 

 

(NEC SECTION 810-

20)

 

 

ELECTRIC

 

 

 

 

 

 

 

 

 

SERVICE

 

 

 

 

 

 

 

 

EQUIPMENT

 

 

 

 

GROUNDING CONDUCTORS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(NEC SECTION 810-21)

 

 

 

 

 

 

 

GROUND CLAMPS

 

 

 

 

 

 

POWER SERVICE GROUNDING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRODE SYSTEM

 

 

 

 

 

 

(NEC ART 250, PART H)

 

 

NEC – NATIONAL ELECTRICAL CODE

3

S2898A