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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
15/26
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.
Manual closing
• Turn hex nut 70.75 clockwise until support latch 70.78 of roller lever
70.11 comes to rest against trip latch 70.16 with an audible “snap”.
• As slow closing proceeds, trip spring 70.20 is simultaneously charged.
Stop sleeve 70.80 prevents overwinding.
• The circuit breaker position indicator now shows CLOSED.
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
Operating condition
after slow closing
Positions of position indicators
Spring position indicator shows closing
spring discharged or charged
Circuit breaker position indi-
cator shows CLOSED, trip
spring charged
Remove slow-
movement device
• Turn hex nut 70.75 counterclockwise until hook 70.74 is relieved of
enough load to allow removal of slow-movement device 70.72.
70.75
70.73
70.76
70.80
70.11
70.78
70.74
70.77
70.16
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