Toshiba VK-6M32A Installation Operation & Maintenance page 44

[/av.
31. 2012
9:22AM
No.
l530
P.
45
Page
42 MAINTENANCE
Table 5, Troubleshooting Guidelinas (cont.)
SYMPTOM SOURCE
OF
TROUBLE
PROBLEM SOLUTION REF.
FIG,
Thele
iS a
closing sound
but circuit
breaker did
not
close.
Mechanism
R$Etiing Bpring and linkg
(feils
ro
reset)
*
Fig. 39
Trip c6tch (tails
t0 reset)
t
Fig. 39
Trip shaft (fails to rssst)
Fig. 39
lntetlock {fails to catch)
+
Fig.
14-
15
FIE.
Trip coil burned, armature
damaged, galled
Replace coil,
otherwis€
*
Fig, 55
Fis. 6O-
FiE.
64
Main shaft (galled)
{
Fig. 39
Breaking
portion
Insulated op€retion rod
(damaged)
I
Undesirably
clos6$ (without
a closing siqnal)
Mechanism
Closing catch (uneble to
res€t)
It
Fig. 39
Closing shaft (uneble to
reset
*
Fig. 39
Control
circuit
Shon circuit of the closing
circuit and the power
supply circuit
ldentiiy
and coffect
Fig. 34-
Fig.37
Doas
not trip 8t
8ll (when
a
trippirE signsl
is
suppli6d)
MecnaniSm
Trip coil {burned or galled)
Replace
Fig, E5
Fig. 60-
Fis. 64
Trip shaft and trip catch
(salled)
*
Fig.
39
Trip
paddlE (dislocatBd)
Baadjust
Fig. 39
Main shaft
(galled)
*
Fis, 39
Vacuum
lmerrupl6r
Conracta Wslded
*
Conrrol
circuit
Auxiliary swhch
(poor
contacl or burned)
RBplacs
Fig. 55
Fig. 66-
Fig. 68
r
liem
Rsquiree Factory Sarvice
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