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4.1
ROUTINE MAINTENANCE
Always perform maintenance according
to
the
following simple
routine
check
to
enable YASNAC-
to
provide long
and reliable service.
Always
turn
OFF the
power
source
to
the NC
unit
when
carrying
out
routine
maintenance
except
when
checking
is possible with
the NC
unit
power on,
such
as
external visual check for
dirt, grease,
etc.
or
check for
noise
or
vibration.
NOTE
It is
not
sufficient
to
simply
"switch off
power" by depressing
the "POWER
OFF" switch
on
the NC
operator
panel.
There will be the
danger of
electri¬
cal shock
since
power
is supplied
to
specific
parts
in the NC unit
even when
the
power
is OFF.
Therefore, turn
OFF the power to the
NC unit
by setting
the MCCB molded
case
(circuit breaker)
located on
(or inside) the power panel
on the machine
side.
Cut off of all
power
to
the NC unit
can
be
cpnfirmed
by
the fans in the unit
since all will
stop
when
power
is
turned OFF.
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648
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