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l!1av.
31. 2012
9:2OAM
No.
1530
0
11
,)
Page
28
MAINTENANCE
INSPECTION AHD MAIIITENANCE TYPE$
IUOTE:
Refer
to the
SAFETY sactlon
ot this
manual
lot
impqnant intormation.
For points and types
of
lubtication
refer
to
Fig.
43
A.
Acc€ptancB lnspsction
This
inspaction confirme
that the circuit
bredke.
unit
ie
completa,
corr€ct
as
epeciJied, and undamaged
from Ehlpmant.
Th6
procEdure
for this
in$pection
ls
outlined in
ths
BECEIVING eEction
of this
manual.
B,
Ftsfiol ln$pection
lnspection
of
the condition
of
th€ circuit
breaker
while
energized.
1)
Check thar
no
unugual sounds or smolls
exists axternally.
C.
Vi$ual lnsp€otion
lnspection perform.d
with
thB
circuit
breaker
withdrawn
flom ths
switchge8r
companm6nt.
I
)
Wiih front
covet
removed,
inspect
entire clrcult breaker
fot
deformation,
ruai or any other typss
ol
abnormalities-
D.
Periodicel lnapection
lnspec
on
parformed
with the
circuit
bteaker withdrawn
from the
Bwitchg€ar
companment.
1l
Psrform Visual lnspection.
2)
Clean
and lightly coat the contacting
gurfac€s
ol
rh€ main conductive pans
with
Toshiba B8 greas€.
3)
Close and
ttip circuit
br€ek€r manually
and
alectrically
to
insure
Proper
operation
of
m€chaniom. ChEck wiPe
measurement (Pg.
361.
4)
lnspect
to
insure lubricadon
of
sliding
end rotating pans.
5)
LubricEt€ sliding and rotating parts
with
machine oll
ts
r€quirod.
6)
Test the clrcuit breeksr
to
inaurB
that
primary
and
$econdary circuit in3ulation
reeistances
are
within
Toshiba
lnternetlonal Corporatian specilications
(Pg. 35).
E, Detail lnspection
lnspection performad
with rhe
circuit
breaker
drawn outside of th€ switchgaat
compertm€nt.
1
I
Parform Periodical lnspefiion.
2)
Re-grease
sliding and roteting
part8.
Feplac€ cotrBr pins and
E{ings that
are
removed
with
ngw
ona8.
3)
Perform diol€ctrlc
test
(s6e
Vacuum
Chack on Pg.
37)'
4)
Test the circuit bisak6r to insure that
closing time (Pg.
201,
openlng timB
(Fg.
2O)
and
minimum operating voltages
tPg. 48)
of bolh
the closa and trip coils
ar€
within
Toshiba
lnternational
Corporation sp€cifications.
F. O\rernaul
Complete di3assembly of circuit breaker to
replace
worn pdrts
Es
required. Clsan and
re-greaae
all
parts, To
be
performed only by
Toshiba lntgrnational Corporation,
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