SAFETY CONSIDERATIONS
Types 4913 and 4915 have been designed and tested according to Class
II
of
IEC Publication
348, Safety Requirements for Electronic Measuring Apparatus, and have been supplied in safe
condition. The present Instruction Manual contains information and warnings which should be
followed by the user
to
ensure safe operation and to retain the instruments in safe condition.
Special note should be made
of
the following:
APPLICATION OF POWER
Before each use
of
Stroboscope Type 4913, check that it is set to match the available mains
voltage and that the correct fuse is installed.
SAFETY
SYMBOLS
fil The apparatus will be marked with this symbol when it is important that the user refer
to
the associated warning statements given
in
the Instruction Manual.
.l
Chassis terminal
rJ-,
Earth
or
ground terminal
,"//'
Hazardous voltage
WARNINGS
Keep Types 4913 and 4915 well away from volatile liquids and gasses and operate only in well
ventilated environments.
Whenever
it
is likely that the
correct
function
or
operating safety
of
one
or
other
of
the
instruments has been impaired, they must be made inoperative and be secured against
unintended operation.
Any internal adjustment, maintenance
or
repair
of
the instruments must be avoided as far as
possible and, if unavoidable, must be carried out only by trained service personnel.
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