Canon VC-C50iR - Manual (Page 46)

8
a Safe Use of Equipment
antenna discharge unit, connection to
grounding electrodes, and requirements
for the grounding electrode. See figure
1.
fig-1
13. Lightning - For added protection of this
equipment during a lightning storm, or
when it is left unattended and unused
for long periods of time, disconnect it
from the wall outlet and disconnect the
antenna. This will prevent damage to
the equipment due to lightning and
power-line surges.
14. 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.
15. Overloading - Do not overload wall
outlets and extension cords as this can
result in a risk of fire or electric shock.
16. Object and Liquid Entry - Never push
objects of any kind into this equipment
through openings as they may touch
dangerous voltage points or short out
parts that could result in a fire or
electric shock. Be careful not to spill
liquid of any kind onto the equipment.
17. Servicing - Do not attempt to service
this equipment yourself as opening or
removing covers may expose you to
dangerous voltage or other hazards.
Refer all servicing to qualified
personnel.
18. Damage Requiring Service -
Disconnect this equipment from the wall
outlet and all power sources including
batteries, and refer servicing to
qualified service personnel under the
following conditions.
a. When the power-supply cord or plug
is damaged.
b. If any liquid has been spilled onto, or
objects have fallen into, the
equipment.
c. If the equipment has been exposed
to rain or water.
d. If the equipment does not operate
normally even if you follow the
operating instructions. Adjust only
those controls that are covered by
the operation instructions. Improper
adjustment of other controls may
result in damage and will often
require extensive work by a qualified
technician to restore the equipment
to its normal operation.
e. If the equipment has been dropped
or the cabinet has been damaged.
f. When the equipment exhibits a
distinct change in performance. This
indicates a need for service.
19. Replacement Parts - When
replacement parts are required, be sure
the service technician has used
replacement parts that are specified by
Canon or that have the same
characteristics as the original part.
Unauthorized substitutions may result
in fire, electric shock or other hazards.
POWER SERVICE
GROUNDING ELECTRODE
SYSTEM
(NEC ART 250. PART H)
ANTENNA LEAD
IN WIRE
ANTENNA
DISCHARGE
UNIT (NEC
SECTION 810-20)
GROUNDING
CONDUCTORS
(NEC SECTION
810-21)
GROUNDING CLAMPS
NEC — NATIONAL ELECTRIC CODE
EXAMPLE OF ANTENNA GROUNDING AS
PER NATIONAL ELECTRICAL CODE
GROUNDING
CLAMP
ELECTRIC
SERVICE
EQUIPMENT