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Important Safeguards— Continued
18. Object and Liquid Entry —Never push objects of any
kind into the appliance 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 appliance.
19. Servicing —Do not attempt to service the appliance
yourself as opening or removing 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 ser-
vice 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 appliance,
C. If the appliance has been exposed to rain or water,
D. If the appliance does not operate normally by follow-
ing 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. Unautho-
rized 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.
25. Liquid Hazards —The appliance should not be
exposed to dripping or splashing and no objects filled
with liquids, such as vases should be placed on the
appliance.
FIGURE 1:
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE, ANSI/NFPA 70
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
NEC – NATIONAL ELECTRICAL CODE
ELECTRIC
SERVICE
EQUIPMENT
GROUND
CLAMP
ANTENNA
LEAD IN
WIRE
S2898A
CR-L5̲E.book Page 3 Monday, May 19, 2003 4:05 PM