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Manual operations
FK 3-1 / FK 3-06 motor-wound spring
operating mechanism
21.5.2003
© ALSTOM
48.020.181E/2
6/26
Manual operations possible
Operating mecha-
nism not coupled
• The motor-wound spring operating mechanism as delivered is mounted
on the circuit breaker as described in the installation manual.
• If the as-delivered condition of the uncoupled operating mechanism has
been modified in error, the following manual operations can be per-
formed in order to restore the as-delivered condition.
Manual discharge
➁
➁➁
➁
of closing spring
➀
➀➀
➀
Slow
opening
Slow
opening
➃
➃➃
➃ ➂
➂➂
➂
If Action
Fig. ➀
➀➀
➀
Closing spring discharged; circuit
breaker position indicator OPEN
• No action (as-
delivered condition)
Fig. ➁
➁➁
➁
Closing spring charged; circuit breaker
position indicator OPEN
• Manually discharge
closing spring
Fig. ➂
➂➂
➂
Closing spring discharged; circuit
breaker position indicator CLOSED 1)
• Slowly open
Fig. ➃
➃➃
➃
Closing spring charged; circuit breaker
position indicator CLOSED 1)
1. Slowly open
2. Manually discharge
closing spring
Note 1) If the spring operating mechanism has been operated with no circuit
breaker, consult the manufacturer to identify any possible damage.
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