KSB EA-C, Installation & Operating Manual, Page: 15 / 44

5 Reassembly
15 of 44
EA-C
a
b
c
d
e
f
g
h
i
EA-C 20 - 140 EA-C 200 - 250
Fig. 4: Mounting of EA-C actuator sizes 20 to 250
a Coupling
b Coupling nut
c Tensioning screw
d Screwed insert
e Pillar
f Stem
g Locknut
h Top flange
3)
i Pillar nut
ü
The handwheel
4)
has been used to move the coupling (a) into its top starting
position.
1. Check that the coupling nut (b) can be turned by hand. If it cannot be rotated,
loosen either the 4 tensioning screws (c) or the screwed insert (d), depending on
the design.
CAUTION
Tensioning screws or screwed insert too loose
Internal coupling parts may fall out!
▷ Reinsert the internal coupling parts in accordance with the disc spring
arrangement diagram.
2. Insert the actuator pillars (e) in the drilled holes provided in the top flange
3)
(h).
3. Screw the pillar nuts (i) onto the threads of the pillars (e). Make sure to keep a
distance of approx. 5 mm from the top flange
3)
(h).
4. Turn the handwheel to extend the coupling (a) until the coupling nut (b) rests
on the stem (f).
5. Keep on turning until the gap between the pillar shoulders and the top flange
3)
(h) is approx. 5 mm.
3) Control valve flange for mounting the actuator
4) To turn the handwheel of EA-C 200 to 250 actuators, press the coupling button on the top of the actuator cover until it
latches in the down position.