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FlowAct Diaphragm Linear Actuator FCD VLENIMFACTA4 10/16
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NOTICE
Always replace parts showing wear with
new parts.
22. Lubricate the new O-ring (275) and new scraper ring
(273) with an appropriate lubricant and install into the
guide bushing (253).
23. Lubricate the new O-ring (275) with an appropriate lu-
bricant and install into the guide bushing (6.82).
24. Fix the stem (211) into the stem clamping tool.
25. Lubricate the new O-ring (272) with an appropriate
lubricant.
26. Lower the thrust washer (255), O-ring (272), dia-
phragm (225), diaphragm plate (227),
disk (220), spacer bushing (228), distance
bushing (374) and lock washer (349)
onto the stem (211).
NOTICE
Arrange the distance bushing like an
upside down top hat. Its function is
that of an internal stroke stop.
27. Lubricate the thread of the stem (211) with an appro-
priate lubricant and install and finger tighten the stem
extension (380).
NOTICE
The diaphragm plate should be posi-
tioned to the diaphragm with the aid
of the positioning template. Mark the position.
28. Turn clockwise the stem extension (380) using a suit-
able torque wrench, see section 15 torque requirements.
29. Loosen and remove the diaphragm-stem unit (211 -
380) out of the stem clamping tool. Lubricate the ac-
tuator stem with an appropriate lubricant.
30. Carefully lower the diaphragm-stem unit (211 - 380)
into the diaphragm casing (202 - 373).
NOTICE
Position the diaphragm-stem unit
such that the air connection and the
Mark align.
31. Install and align the actuator springs (229).
NOTICE
The surface, respectively the edges
of the spring ends should be aligned
to the actuators center. If these will ignored the spring
may touch the actuators casing and rub in rare cases.
32. Install and position the spring adjusting plate (326)
such that the imprint on the plate and air connection
are opposite of each other.
33. Install the distance plate (231) and diaphragm casing
(202 - 389), positioning the casing such that the air
connections opposites.
34. Lubricate the threats of the long hexagon bolts (336)
with an appropriate lubricant and load the springs uni-
formly in a clockwise sequence by tightening the long
hexagon bolts (336), plain washers (337) and hexagon
nuts (351). Alternative method see
NOTICE
step 4.
35. Install the short hexagon bolts (335), plain washers (337)
and hexagon nuts (351).
36. Tighten the nuts (351) using a crosswise pattern in
four steps, see section 15 torque requirements.
37. Install the protection sleeve (339).
38. Assemble the coupling parts (see page 54).
39. Lubricate the new O-ring (276) with an appropriate
lubricant and install it onto the guide bushing (373).
40. Lubricate the threats of the hexagon bolts (334) and
the new O-rings (279) with an appropriate lubricant
and install it onto the guide bushing (373). Tighten the
bolts (334) using a crosswise pattern in two steps, see
section 15 torque requirements.
41. Lubricate the new O-ring (272) with an appropriate lubricant.
42. Lower the thrust washer (255), O-ring (272), dia-
phragm (225), diaphragm plate (227),
disk (220), spacer bushing (228), dis-
tance bushing (374) and lock washer
onto the stem (211).
NOTICE
Arrange the distance bushing like an
correctly wearing hat. The internal
stroke stop takes over the special nut.