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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
22/26
• The return stop will not function properly if the clamp shackle screw is
not tightened to the specified torque.
• If the closing spring is being charged by the motor under these condi-
tions and the motor voltage drops out, the closing spring will discharge
by turning the gearing backwards. Damage to the operating mechanism
may result.
CAUTION
• After performing manipulations on the return stop, tighten the
clamp shackle mounting screw to a torque of 5 Nm ±10%.
Re-enable motor limit
switch
• Remove motor limit switch disabling plate 71.16 so that the motor limit
switch can function again.
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