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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
5/26
Product safety
• If the spring operating mechanism is operated with no circuit breaker, the
total energy is released inside the spring operating mechanism.
• Damage to the operating mechanism may result.
CAUTION
• Operate the spring operating mechanism only with the circuit
breaker coupled to it.
• If the gas pressure of the circuit breaker is lower than the minimum value
for mechanical switching operation (listed on the warning plate in the
spring operating mechanism), an excessively high energy is released in-
side the spring operating mechanism.
• Damage to the circuit breaker and the spring operating mechanism may
result.
CAUTION
• Operate the spring operating mechanism only with a circuit breaker
having a gas pressure higher than the minimum value for mechani-
cal switching operation.
• Dust inside the spring operating mechanism can interfere with the func-
tioning of moving parts such as latches, rollers and shafts and can impair
the performance of electrical equipment.
• Malfunctions and damage to the spring operating mechanism may result.
CAUTION
• Always keep the inside of the spring operating mechanism free of
dust. Always close the cabinet door in correct fashion to bar the en-
try of dust.
• The use of cleansers, rust-preventing oil or sprays can lead to heavy build-
ups of gum.
• This can interfere with the functioning of the spring operating mechanism.
CAUTION
• Use only mechanical cleaning aids when performing cleaning
and/or corrective maintenance. If relubrication is necessary, it must
be carried out in compliance with the FK 3-X lubrication instruc-
tions.
• Moisture inside the spring operating mechanism leads to condensation
and subsequent corrosion of steel parts.
• Malfunctions and damage to the spring operating mechanism may result.
CAUTION
• The heating (anticondensation feature) must always be in opera-
tion, regardless of where the circuit-breaker is installed.