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Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
Safety in general • Any work (manipulation) which is not in compliance with the instructions
harbors hazards for the operator and the motor-wound spring operating
mechanism.
• If any work (manipulation) on the motor-wound spring operating mechanism
is carried out which is not in compliance with the instructions FK3-X and /
or FK3-07, a hazard will exist which can result in the death or serious injury
of the operator. The motor-wound spring operating mechanism could also
be damaged.
• Carry out only that work (manipulation) which complies with the instructions
for motor-wound spring operating mechanisms FK3-07.
WARNING!
Carry out only that work (manipulation) which
complies with the instructions for motor-wound spring
operating mechanisms FK3-07.
Staff safety
when working
on the operating
mechanism
• The closing spring is charged when the control voltage is switched off.
Despite the interrupted control voltage, unintentional switching can take
place if the operating mechanism is worked on (manipulated).
• Touching moving parts is synonymous with an accident hazard.
WARNING!
Slacken the springs when the control voltage is
interrupted by switching off, on and off again using the
manual operating device.
• Motor-wound spring operating mechanisms with undervoltage releases
immediately switch off when the control voltage is interrupted.
• This could result in injuries when working on (manipulating) the motor-
wound spring operating mechanism.
WARNING!
Block the undervoltage releases to avoid unintentional
switching off.
• If the motor voltage is switched on, the motor immediately begins to charge
the closing spring.
• Touching moving and / or spring-loaded parts is synonymous with an
accident hazard.
WARNING!
When switching on the control voltage, keep the
body away from moving / spring-loaded parts of the
apparatus.
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