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SAFETY PRECAUTIONS
(■iKWKRATi
This instrument has been designed and
tested to ensure reasonable personal
protection
and
protection
of
the
surrounding area against damage,
and
has been supplied in a safe condition.
The
following
precautions
must
be
observed
by the user
to ensure safe
operation
and
to
retain
the
instrument in a safe condition.
BEFORE SUPPLYING POWER
Verify that the instrument is set to
suit the available mains voltage and
that the correct fuse is installed.
PROTECTIVE EARTH
The protective earth
of
the
instru¬
ment must be connected to the
earth
before
connecting
the
instrument
to
the product input or output terminals.
A protective ground connection by way
of
the
grounding
conductor
in
the
power
cable
is
essential
for
safe
operation.
The plug shall only be inserted into a
socket
outlet
provided
with
a
protective earth contact.
SAFETY SYMBOLS
yty
Instruction manual symbol :
The
instrument
will
be
marked
with
this symbol when it is necessary
for
the
user
to
refer
to
the
instruction manual for safety.
High voltage symbol
:
Dangerous
voltage
exceeding
1
kV
is
indicated by this symbol.
~
Protective earth terminal.
[WARNING
The WARNING sign is a head¬
ing
of
the
requirement(s)
that should be observed to
avoid
personal
or
fire
hazards.
,——-—
t
^CAUTION
\
The CAUTION sign leads the
) precautjLonthat
should
be observed to avoid damage
or
destruction
of
the
instrument.
POWER SOURCE
This
instrument
is
intended
to
operate from a mains supply that will
not be more than 250 volts rms.
For
suitable
voltage
selection,
see
the
INSTALLATION
paragraph
in
this
manual.
hazard arising from loss of ground
The
protective
action
must
not
be
negated
by
the
use
of
an
extension
cord without protective conductor.
If this instrument is to be energized
via
an
autotransforiiier
for
voltage
reduction,
make
sure
the
common
terminals
is connected to the
earth
terminal of the power source.
DAMAGE IN TRANSPORT OR STORAGE
Whenever it is likely that protection
has been impaired,
for example as
a
result of damage caused by abnormal
stresses in transport or storage, the
instrument shall be made inoperative
and be secured against any unintended
operation.
USE OF PROPER FUSE
Use
only
the
fuse
of correct
type,
voltage rating and current-rating as
specified
in
the
INSTALLATION
paragraph in this manual.
REMOVAL OF COVERS
Removal of covers is likely to expose
live
parts
although
reasonable
pre¬
cautions have been taken in the design
of
the
instrument
to
shield
such
parts.
The instrument shall be dis¬
connected from the supply before car¬
rying out any adjustment, replacement
or
maintenance
and
repair
during
which the instrument shall be opened.
If
any
adjustment,
maintenance
or
repair under voltage is inevitable it
shall
only
be
carried
out
by
a
qualified personnel who is
aware
of
the hazard involved.
DO NOT OPERATE IN EXPLOSIVE ATMOSPHERES
To avoid explosion, do not operate the
instrument in an explosive atmoshpere.
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