OpTK Spring Cylinder Rotary Actuators
2
Note:
Although Optimux rotary spring
cylinder actuators can be mounted in any
position, mounting the cylinder vertically is
the preferred installation.
1. Mount the actuator on the desired valve or
other mechanical device.
2. Connect the air supply and instrument signal
air lines to the two appropriately marked
connections on the positioner. Since both the
cylinder and positioner are suitable for 150
PSI air supply, an air regulator should not be
used unless the air supply exceeds 150 PSI.
CAUTION:
In some cases, the air
supply must be limited to less
than 150 PSI. A sticker found near
the upper air port on the actuator
cylinder will indicate this
condition.
CAUTION:
The transfer case cover
plate and yoke must be mounted
on the actuator prior to it
being stroked.
3. The installation of an air filter on the supply
line is recommended.
4. Make sure all air connections are free of
leaks, using a soap solution.
PREVENTIVE MAINTENANCE
At least once every six months, check for proper
operation by following the preventive
maintenance steps outlined below. These steps
can be performed while the actuator is in service
and, in some cases, without interrupting service.
WARNING
: Keep hands, hair and
clothing away from all moving parts
while operating the actuator.
If an internal problem is suspected with the
actuator, refer to the “Disassembly and
Reassembly” section.
1. Examine the actuator for damage caused by
corrosive fumes and process splatter.
2. Clean actuator and repaint oxidized areas.
3. If possible, stroke actuator and check for
smooth, full-stroke operation.
4. Remove the transfer case cover plate and
make sure the positioner linkage and splined
lever arm are securely fastened.
CAUTION:
Never apply air to
the actuator without the cover
plate installed; otherwise, the
unsupported shaft will sustain
damage. Do not remove the cover
plate with the valve in service.
5. Be sure all accessories, brackets and bolting
are securely fastened.
6. If possible, remove air supply and observe
the position indicator plate for correct fail-
safe action.
7. Spray a soap solution around the cylinder
retaining ring and the adjusting screw to
check for air leaks through the O-rings.
8. Clean any dirt or other foreign material from
the shaft.
9. If an air filter is supplied, check and replace
cartridge if necessary.
Actuator Removal
1.
Support actuator assembly before
disconnecting it from the body assembly.
2. Remove the actuator cover bolts. Carefully
pry or slide cover plate from the lever arm.
3. On Optimux actuators with a clamping lever
arm design, loosen the clamp bolt.
4. Loosen the actuator adjusting screw to
release spring pressure.
5. Remove the actuator from the body by
separating the actuator at the yoke. This is
done by removing the four transfer case bolts
and pulling the actuator off the valve shaft.
