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WSM Minor Change II Service Engineering Section
3. Flow chart; Service port operation
Key
Is safety lock lever
down position?
Service port switch
Service port switch lamp
lights up
Is breaker switch ON?
Is knob switch shifted?
Breaker starts.
Thumb cylinder
While breaker is working;
1) Press breaker switch on again?
2) Move the knob switch?
3) Raise the safety lock lever?
4) Main key off?
One of above operations?
Breaker stops
starts moving.
Yes
No
ON
ON
Yes
Yes
No
Yes
Yes
OFF
No service port operation
Release the knob switch
Thumb cylinder stops.
to neutral.
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