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Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
Product safety • If a motor-wound spring operating mechanism without circuit breaker is
switched, the entire energy is activated inside the motor-wound spring
operating mechanism.
• As a result, it could cause considerable damage.
NOTE!
Switch the motor-wound spring operating mechanism
only when it is connected to a circuit breaker.
• If the gas pressure of the circuit breaker is below the minimum value for
mechanical switching (shown on the warning sign in the motor-wound
spring operating mechanism), unacceptably high energy is activated inside
the motor-wound spring operating mechanism.
• This could damage the circuit breaker and the motor-wound spring operating
mechanism.
NOTE!
Switch the motor-wound spring operating mechanism
only when using a circuit breaker whose gas pressure
is above the minimum value for mechanical switching.
• Dust inside the motor-wound spring operating mechanism could impair the
functioning of moving parts, such as pawls, rollers and shafts, as well as
the performance of the electrical apparatus.
• This could result in malfunctioning and damage to the motor-wound spring
operating mechanism.
NOTE!
The inside of the motor-wound spring operating
mechanism must be kept dust-free. The housing door
must always be closed properly.
• The use of cleaning agents, anti-rust oils or sprays could result in heavy
greasy deposits.
• This could impair functioning of the motor-wound spring operating
mechanism.
NOTE!
Use only mechanical means for cleaning purposes
when carrying out cleaning and / or corrective
maintenance work. Any necessary follow-up
lubrication must be carried out according to the
lubricating instructions FK3-07.
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