the operation instructions. Adjust only those controls that are covered by the operating instruction, 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 the product has been dropped or damaged in any way.
F. When the product exhibits a distinct change in perform- ance — this indicates a need for service.
20.REPLACEMENTS PARTS — When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the sam characteristics as the original part. Unauthorized substitutions may result in fire, electric shock or other hazards.
21.SAFETY CHECK — Upon completion of any service or repairs to this product, ask the service technician to per- form safety checks to determine that the product is in proper operating condition.
22.WALL OR CEILING MOUNTING — The product should be mounted to a wall or ceiling only as recommended by the manufacturer.
23.HEAT — The product should be situated away from heat sources such as radiators, heat resistors, or other prod- ucts (including amplifiers) that produce heat.
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
ELECTRIC
SERVICE
EQUIPMENT
ANTENNA
LEAD IN WIRE
GROUND
CLAMP
ANTENNA
DISCHARGE UNIT
(NEC SECTION
GROUNDING CONDUCTORS
(NEC SECTION
GROUNDING CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
NEC-NATIONAL ELECTRICAL CODE
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