Flowserve SX-Series User Manual

Automax Valve Automation Systems

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East Phone: 801 373 3028 Flow Control Division Provo, Utah 84606-6160 Facsimile: 801 489 2228 Automation Business Unit www.owserve.com Email: actuators@owserve.com

SuperNova SX-Series

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 periodically to prevent the seals from taking a set.

Prior to assembly, check the mounting surfaces, the stem adaptor and the bracket to assure proper ﬁt. Manually open and close the valve to insure freeness of operation. Be sure the valve and Automax actuator rotate in the same direction and are in the same position (i.e., valve open, actuator open). Secure the valve 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’s travel stops. Bolt the actuator to the bracket.

After consulting the valve manufacturer’s recommendations, 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 with no binding of the stem adaptor. If the actuator is equipped with an UltraSwitch or other accessories, adjust them at this time.

To prolong actuator life use only clean, dry plant air. Lubricated air is not required, however it is recommended particularly for high cycle applications. Do not use lubricated air with positioners.

Travel Stop Adjustments Both Directions

The SuperNova Series actuators have unique, travel stop adjustments in both the clockwise and counterclockwise directions. All actuated valves require accurate travel-stop adjustments 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 adjustment for both ends of the stroke to achieve the expected performance.

Ball and Plug Valves require precise adjustment at the open (CCW) position to protect the seat from the ﬂow media and the closed (CW) position to assure absolute shut-off.

Butterﬂy Valves require precise adjustment at the closed position to assure full shut-off, to prevent disc overtravel and damage to the seat at the closed position and to assure maximum ﬂow in the open position.

Tandem Valves, where two valves are operated in tandem through a single solenoid valve (eg., a 3-Way conﬁguration), absolutely require precise adjustment at both ends of the stroke to assure the seating of both valves.

Stop Adjustments and Locations

View the actuator with the Air Ports facing you.

Endcap Screw Adjustment Bolt Spring Actuator Socket Size Socket Size Color Code SX050 4mm 3mm white SX063 5mm 4mm lt. green SX085 6mm 5mm blue SX100 6mm 6mm red SX115 6mm 6mm yellow SX125 8mm 6mm grey SX150 8mm 8mm dk. green

LMR0021-1 (AUTO-6) 11/01

Adjustment Bolt Location

Actuator Fail Clockwise Counterclockwise Type Position (CW) (CCW) Double Acting Left End Cap Right End Cap Spring Return CW Left End Cap Right End Cap Spring Return CCW* Right End Cap Left End Turn

*The pistons are rotated 180° for CCW fail position

Page 1 of 4

Automax Valve Automation Systems

Installation, Operation and Maintenance Instructions

Maintenance Instructions

Disassembly Procedures

1. Disconnect all air and electrical supplies from actuator.

2. Remove all accessories from actuator and dismount actuator from valve.

3. Position actuator with air supply ports facing you. Apply air pressure to Port 2 to release spring pressure from the Stop Bolt (9).

4. Remove the Stop Bolt Retaining Nut (14), Washer (15), and O-ring (16) on the Left Endcap (19) and turn the Stop Bolt (9) clockwise into the Body (1) until it is ﬂush with the Endcap (19).

5. Exhaust air from Port 2, the Stop Bolt (9) should now turn freely. Continue turning Stop Bolt (9) clockwise until it is disengaged from the Endcap.

CAUTION: Unload springs before removing pinion to eliminate

6. Spring Return Actuator:

CAUTION: Follow step 4 to relieve force on inward travel stop

CAUTION:

possible spring side loading that could scratch the pinion bore.

before proceeding.

Do not use impact wrench to remove endcap screws.

Failure to follow this precaution could result in bolts binding in the body.

To remove Spring Return Endcap, ﬁrst completely remove two diagonal Endcap Screws (21) from one Endcap. The two remaining Endcap Screws should be removed evenly. As the Screws are removed, the springs will push the Endcap out. Repeat for opposite side. The springs will be totally unloaded before the screws are completely unthreaded. Remove the springs (23,24,25.)

pulling on the Stop Bolt (9).

8. Remove the Right Piston (2) by pushing out through inside of Body (1).

9. Remove the Pinion Snap Ring (5) and Pinion Washer (4), and pinion thrust washer (26).

10. Tap Pinion (3) lightly with plastic mallet to remove.

Reassembly Procedures

1. Inspect all parts for wear and replace any worn parts as needed.

Replace all ‘O’-rings.

2. Clean all components and lightly grease cylinder bore, pinion and

seals with a high performance grease such as Dow 55. Lubricate endcap screw (21) threads with similar grease.

3. Reverse the disassembly procedures to reassemble.

4. The standard Pinion (3) orientation is with the ﬂats on top of

pinion perpendicular with the body (1) in the CW position.

5. When ﬁtting the Pistons (2) ensure the teeth engage the Pinion

(3) at the same time by measuring in from the edge of the body (1) the same distance from each end. Note: the orientation of the pistons will determine the operation of the actuator. Refer to the diagrams under “Operation” for correct piston position.

6. Test the actuator for smooth operation and air leakage at service

pressure before installing.

Changing Number of Spring

1. Follow the Disassembly Procedures through step 5.

2. Determine nested spring combination of inner, middle and outer springs. Consult catalog torque charts, distributor or factory. Insert appropriate springs into cylinder. Springs must be properly seated against piston and endcap to assure that springs do not bind.

3. Re-assemble the actuator.

Double Acting Actuator: Remove the 8 Endcap Screws (21). Step 7 will push the Endcaps (18,19) from the Body (1).

CAUTION:

Do not use impact wrench to remove endcap screws.

Failure to follow this precaution could result in bolts binding in the body.

7. Rotate Pinion (3) counterclockwise (DA & SR-FCW) or clockwise (DR & SR-FCCW) to drive the Pistons (2) off the end of the rack. Pull the Left Piston (2) from the body (1) by

LMR0021-1 (AUTO-6) 11/01

Spring chart SX063-SX150

Spring Group #1 Spring #2 Spring #3 Spring (inner) (middle) (outer) 4 2 5 1➁ 1➁ 6 2 7 1 2 8 2 2 9 1➁ 1➁ 2 10 2 2 11 2 2 12 2 2 2

Spring chart SX050 ➁

Spring Group #1 Spring #2 Spring #3 Spring (inner) (middle) (outer) 4 1➁ 1➁ 5 2 6 2 1 7 1 2 8 2 2 9 2 2

Note: ➁ #1 Spring has one color code dot #2 Spring has two color code dots #3 Spring has three color code dots

Spring Combination ➁

➁ SX050 has maximum of 2 springs per

endcap

➁ Install springs on opposite sides

Page 2 of 4

+ 2 hidden pages

Flowserve SX-Series User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual