5 Reassembly
16 of 44
EA-C
6. Use an open-ended wrench to screw the coupling nut (b) onto the stem (f) until
the pillar shoulders rest on the top flange
3)
(h).
7. Continue until the stem thread is screwed into the coupling nut (b).
ð
Thread engagement depth for M10: 12 mm
ð
Thread engagement depth for M14: 16 mm
8. Secure the coupling nut (b) with the locknut (g).
9. For EA-C 20 to 140 actuators, tighten the tensioning screws (c) crosswise to a
torque of 8 Nm. On EA-C 200 to 250 actuators, tighten the screwed insert (d)
hand-tight as far as it will go using a pin-type face wrench.
10. Operate the coupling (a) with the handwheel until the pillar shoulders rest on
the top flange
3)
(h).
1
2
Fig. 5:
Illustration of correct screwed condition
1
Pillar shoulder
2
Top flange
3)
11. Tighten the pillar nuts (i) to a torque of 56 Nm.
EA-C 20
EA-C 40
EA-C 140
EA-C 200 - 250
EA-C 80
Fig. 6:
Disc spring arrangement diagrams of EA-C 20 to 250 actuators
5.4 Electrical connection
DANGER
Electrical connection work by unqualified personnel
Danger of death from electric shock!
▷
Always have the electrical connections installed by a trained and qualified
electrician.
▷
Observe regulations IEC 60364.
DANGER
Work performed on an energised terminal box
Danger of death from electric shock!
▷
Switch off the power supply at least 5 minutes prior to commencing work and
ensure that it cannot be switched on again unintentionally.