Fuji Electric FVR-C11S-7EN Series - Maintenance and Inspection; 8-1 Daily Inspection

FVR-C11S-EN
8-1 8 Maintenance and Inspection
8
8 Maintenance
and Inspection
Execute the dail
y
inspection and periodic in-
spection for preventin
g
a fault and ensurin
g
lon
g
-term reliabilit
y
.
Note the followin
g
re
g
ardin
g
the work.
8-1 Dail
y
Inspection
Durin
g
the operation and conduction, the visual
inspection for abnormal operation is executed
from the outside without removin
g
the covers.
Inspections are usuall
y
done to check the follow-
in
g
:
1. The expected performance (satisf
y
in
g
the
standard specification) is obtained.
2. The environment satisfies the standard spec-
ification.
3. The ke
y
pad panel displa
y
is normal.
4. There are no abnormal sound, vibrations or
unpleasant odors.
5. There are no overheatin
g
marks or discolora-
tion.
8-2 Periodic Inspection
The periodic inspection must be executed after
stoppin
g
the operation and cuttin
g
off the power
source and removin
g
the surface cover.
After power-off, time is needed for the smoothin
g
capacitors in the DC section in the main circuit to
dischar
g
e. To prevent electric shock, make sure
that the volta
g
e falls down to the safet
y
value
(25VDC and below) usin
g
a multimeter after the
char
g
e lamp (CRG)
g
oes off.
WARNING
1. Start inspection five minutes or more after
turnin
g
off the power suppl
y
. (Check that
the char
g
e lamp (CRG)
g
oes off, and
check the volta
g
e is 25V DC or below be-
tween terminals P(+) and N(-).
There is dan
g
er of electric shock.
2. Onl
y
the desi
g
nated person can perform
the maintenance and replace components.
(Take off an
y
metal objects such as a
watch or rin
g
.)
(Use insulated tools.)
3. Never modif
y
the inverter.
There is dan
g
er of electric shock or in-
j
ur
y
.