Flowserve Heavy Duty Actuator - Manual

© 2001, Flowserve Corporation, Provo, UT
Automax Valve Automation Systems
Installation, Operation and Maintenance Instructions
Flowserve Corporation 765 South 100 East Phone: 801 373 3028
Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228
Automation Business Unit www.flowserve.com E-mail: [email protected]
1. All actuators are factory lubricated for life, but
still
should be protected from the elements and stored
indoors until ready for use. The ports of the actuator are
plugged as supplied from the factory. If actuators are
stored for a long period of time prior to installation, the
units should be stroked every 3 months to prevent the
seals from taking set.
2. Prior to assembly, manually open and close valve
to insure freeness of operation. Be sure valve and actuator
rotate in the same direction and are in the same position
(i.e., valve closed, actuator closed).
3. Check the mounting surfaces, the stem adaptor and the
bracket to assure proper fit. Secure the valve in the closed
position with the stem vertical. Bolt the bracket to the valve
and place the stem adaptor on the valve stem. Position the
actuator over the valve and lower to engage the stem
adaptor to the actuator shaft. Continue to lower until the
actuator seats on the bracket mounting surface. In order to
align the bolt holes, it may be necessary to turn or stroke
the actuator a few degrees and/or adjust the actuator travel
stops. Bolt the actuator to the bracket.
4. After consulting the valve manufacturer's recommen-
dations, adjust the travel stop bolts of the actuator for
the proper open and closed valve positions. Pneumatically
stroke the actuator several times to assure proper
operation without binding of stem adaptor. If the actuator
is equipped with an Ultraswitch or other accessories adjust
them at this time.
5. To prolong actuator life use only clean, dry plant air.
Lubricated air is not required, however it is recommended
particularly for high cycle applications.
Caution: Do not use
lubricated air with positioners.
Travel Stop Adjustments
All actuated valving requires accurate travel-stop adjust-
ments at both ends of the stroke to obtain optimum
performance and valve seat life. The accumulation of
tolerances in the adaption of actuators to valves is such
that there must be a range of adjustments for both ends
of the stroke to achieve the expected performance. The
Heavy Duty series actuators have travel stop adjustments
in both the clockwise and counter-clockwise directions.
The 12 degree overtravel feature provides adjustments
from -6 to +96 degrees.
Heavy Duty Actuator
Installation Instructions
Field Conversion from Fail CW to Fail CCW
(For Spring Return Actuators)
1. Apply supply air to actuator and loosen Stop Bolt Jam
Nut (17) and back off clockwise Stop Bolt (16) to remove
all spring cartridge preload.
2. Remove supply air from actuator.
3. Support Spring Cartridge (11) and loosen all 4 Nuts
(41) evenly till all 4 nuts are loose. The spring cartridge
does not have to be removed.
4. Remove the Position Indicator (44) or any other
accessories that may be on the output shaft.
5. Remove the Bearing Retainer Screws (14) from the
valve mounting side and slide the Retainer Plate (13) off
the shaft.
6. The Torque Shaft (20) may now be tapped out using a
soft faced hammer. Use care not to drop the shaft or the
Bearing (12) when they come out.
7. Rotate Torque Shaft (20) end for end and reinstall
into the Yoke (4) using care to line up the shaft with the
Bearing (12) on the opposite end. Push the shaft thru till
the shaft bottoms out. This should only require hand
pressure to reinstall the shaft.
8. Reinstall the Bearing (12) back into the housing until it
is flush with the top of the housing.
9. Reinstall the Bearing Retainer Plate (13) and Screws
(14) insuring that the Gasket (37) is in place.
10. Tighten the Spring Cartridge Nuts (41) evenly until
they are all 4 evenly tightened. See bolt torque chart.
11. Apply supply air to actuator and reset Stop Bolt (16).
Never try to adjust stop bolt against force of spring.
12. Reinstall any accessories or position indicator on
Torque Shaft (20).
13. Check actuator for proper operation.
14. The result of this operation is that the “valve”
side of the actuator has been reversed.
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