Greenheck El-O-Matic E and P Series - Manual (Page 7)

5.
Installation - Linear Actuators
Mechanical Installation - Linear Actuators
The mountings for linear positioners will vary dependent
on the type of control valve.
The simplest assembly is where the control valve yoke is
to the standard IEC 534-6 and has type “C” (Pillar) yoke
design. A standard mounting kit is available for this and
will provide a suitable mounting for most valves in this
category.
Typical installation for a direct acting assembly. (Increas-
ing signal opens the valve with a rising spindle).
1. Fix the bracket (1) to the positioner base, using the four
bolts provided.
2. Move the valve spindle into a mid-stroke position.
3. Fix the lever (2) to the valve connection block (3) using
the two M6 bolts. The carrier bolt (5) should be posi-
tioned loosely in the lever (2).
4. Assemble the slider on the feed back lever (7). Use
assembly "a" (below) for strokes 60 to 100 mm. or
assembly "b" for strokes 10 to 40 mm.
5. Locate the positioner, together with the bracket (1) on
the left-hand pillar using the "U"-bolt clamps (4). (Use
the right-hand pillar for reversacting assemblies). pass
the carrier bolt (5) through the feedback lever slot,
taking care to keep the anti-backlash spring (6) in it's
correct position.
6. Slide the positioner up or down the pillar until the lever
(2) and the feedback lever (7) are parallel. Fix in posi-
tion.
7. Adjust the linkage to the correct stroke by moving the
slider until the appropriate position on the feedback
lever is indicated. Then tighten the carrier bolt (5).
8. Let the actuator make a full stroke and check that the
linkage moves freely within the bracket.
9. Move the actuator to it's "zero" position. Turn the
positioner shaft counterclockwise (CCW) to the end of
stroke. Fasten the feedback lever to the positioner
shaft.
5
1
4
2
3
6
7
Linear mounting
b) Lever for 10 to 40 mm. Stroke
Installation mark for 20 and 40 mm. stroke
Installation mark for 10 and 16 mm. stroke
Slider installation for 25 mm. stroke
a) Lever for 60 to 100 mm. Stroke
Slider installation for 100 mm. stroke
Installation mark for 60 and 100 mm. stroke