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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
16/26
Slow opening
The spring operating mechanism has been made ready for manual
operations.
Positions of position indicators
Verify operating state
of circuit breaker and
spring operating
mechanism
Spring position indicator shows closing
spring discharged or charged
Circuit breaker position indica-
tor shows CLOSED, trip spring
charged
70.71 Closing latch disabling deviceTools required
71.15 Closing spring discharging device
70.72 Slow-movement device
70.58 Manual release disabling plate 1)
71.20 Undervoltage release disabling device 1)
1) Required only for a spring operating mechanism equipped with an un-
dervoltage release but no integral disabling feature
Install slow-
movement device
• Lay support plate 70.73 of slow-movement device 70.72 on upper right
distance sleeve 70.76 and bring to bear against operating mechanism
chassis.
• Engage hook 70.74 of slow-movement device with pin 70.77 of support
latch 70.78.
Relieve load on trip
latch
• Use tool to turn hex nut 70.75 clockwise until the torque increases, sig-
nalling that the load on trip latch 70.16 has been relieved.
70.11 Roller lever 70.76 Distance sleeve
70.16 Trip latch 70.77 Pin
70.73 Support plate 70.78 Support latch
70.74 Hook 70.80 Stop sleeve
70.75 Hex nut
70.75
70.73
70.76
70.80
70.11
70.74
70.77
70.78
70.16
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