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2
3
1
Operation
The actuator function can be changed from NO to
NC or vice versa.
NO = Normally open.
NC = Normally closed.
Study the instructions carefully.
5. Changing of the actuator function
NOTE!
Check the actuator type before changing the actuator
function.
1. Separate the actuator from the valve according
to instructions 1-3 on page 12.
2. Unscrew and remove the hexagonal nuts and
bolts. The 2 long bolts must be unscrewed and
removed last to slowly decompress the springs.
3. Lift off diaphragm case (a) and remove
springs (b).
4. Pull out actuator piston rod (c), diaphragm plate
(d), plate (e) and diaphragm (f) from yoke (g).
5. Unthread nut (h) while counterholding nut (i).
The nut (i) must not be removed on the actuator
piston rod. Should the nut be removed, adjust
the nut so that the dimension 187.5 mm is assured.
Pay special attention to the warnings!
1. Turn over diaphragm plate (d), plate (e)
and diapgragm (f) fit them on actuator
piston rod (c) and thread on nut (h) again.
2. Fit the actuator piston rod with diaphragm
plate, plate and diaphragm in yoke (g).
3. Fit springs (6) and diaphragm case (a).
4. Fit and tighten bolts and hexagonal nuts. Fit
and tighten the 2 long bolts first to slowly
compress the springs.
5. Connect the actuator piston rod with the
valve plug according to instructions 4-5 on
page 13.
Pay special attention to the warnings!
6. Turn the switch over plate.
7. Adjust the valve as described on page 7.
187.5 mm
Left: NC Right: NO
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