6 B 72 en
5
7
Maintenance
The manual override requires no regular maintenance.
Grease can be added to the gear through the hole of the
outermost fitting screw, if needed.
Other maintenance as described for the B1C actuator, see
the IMO 6BC71en and the section 4.
8
Valve close and open position
adjustment
In the B1C_RK actuator, the close position limit of valve is
adjusted with the handwheel (309), secured with screw
(319) and locked with the hex nut (320).
B1C_RK_: Counterclockwise rotation of the handwheel
opens the valve.
In the B1C_RL actuator, the open position limit of valve is
adjusted with the handwheel (321), secured with screw
(323) and locked with the hex nut (324).
B1C_RL: Clockwise rotation of the handwheel closes the
valve.
In the B1C_RR actuator, see function from the texts above.
CAUTION:
Air pressure must always be released before operating
or servicing manual hand wheel operator!
Fig. 4
B1C_RK
Parts list for Fig. 5:
Part Quantity
Name
306 1
Manual
overdrive
307 1
Cylinder
end
308 1
Extension
shaft
309 1
Handwheel
310 1
Support
bracket
311 1
Hex
screw
312 1
Bearing
313 1
Pin
314 1
Pin
319 1
Hex
screw
320 1
Hex
nut
Fig. 5
B1C_RL
NOTE:
Turn the handwheel back to the starting position, before
applying supply pressure to the actuator again.
Parts list for Fig. 6:
Part Quantity
Name
1 1
Housing
305 1
Manual
overdrive
310 1
Support
bracket
316
1
Fitting plate (size 20 only)
317
1
Socket screw (size 20 only)
321 1
Handwheel
322 1
Pin
323 1
Hex
screw
324 1
Hex
nut