Related Manuals for Emerson Bettis RGS F Series
Summary of Contents for Emerson Bettis RGS F Series
- Page 1 Installation, Operation and Maintenance Manual RGS011110-2 Rev. 0 April 2016 Bettis RGS F-Series Double-Acting Actuators...
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Page 3: Table Of Contents
Installation, Operation and Maintenance Manual Table of Contents RGS011110-2 Rev. 0 April 2016 Table of Contents Section 1: Overviewn �����������������������������������������������������������1 Section 2: Installation �����������������������������������������������������������2 Valve Attachment ..................3 Accessory Mounting ................... 4 Piping and Operation .................. 4 Travel Adjustment ..................7 Section 3: Troubleshooting ��������������������������������������������������9 Section 4: Maintenance ������������������������������������������������������... -
Page 4: Section 1: Overviewn
Installation, Operation and Maintenance Manual Section 1: Overview April 2016 RGS011110-2 Rev. 0 Section 1: Overview NOTE: All activities must be carried out in order to ensure proper actuator operation. Always read all instructions before beginning maintenance. Bettis RGS F-Series actuators are composed of three basic sub-assemblies, two force modules and a torque module. -
Page 5: Section 2: Installation
Installation, Operation and Maintenance Manual Section 2: Installation RGS011110-2 Rev. 0 April 2016 Section 2: Installation Bettis actuators may be mounted in any position/orientation. If necessary, lift the actuator with straps placed inside the framework of the body. Never lift the actuator by the cylinders, tie rods, or travel stops. -
Page 6: Valve Attachment
Section 2: Installation Installation, Operation and Maintenance Manual April 2016 RGS011110-2 Rev. 0 Larger sizes have lifting eyes incorporated into their body section which may be used to lift the actuator. Figure 2 2�1 Valve Attachment NOTE: Prior to mounting the actuator, verify alignment of coupler and shaft to ensure that the valve will move to correct position. -
Page 7: Accessory Mounting
Installation, Operation and Maintenance Manual Section 2: Installation RGS011110-2 Rev. 0 April 2016 2�2 Accessory Mounting As a standard, Bettis RGS F-Series actuators are provided with female 4mm slotted accessory mounting geometry. When installing accessories, such as switch boxes or positioners, tighten accessory mounting bolts hand tight, stroke the actuator three times to ensure proper alignment then tighten the accessory mounting bolts to the proper torque. - Page 8 Section 2: Installation Installation, Operation and Maintenance Manual April 2016 RGS011110-2 Rev. 0 All Bettis actuators are shipped in the Left-Hand orientation unless ordered as Right- Hand. The orientation may be reversed in the field by moving all accessories to the opposite side of the shaft and turning the actuator top–side down.
- Page 9 Installation, Operation and Maintenance Manual Section 2: Installation RGS011110-2 Rev. 0 April 2016 Piping Guidelines: • Both end cap pressure ports (P1 and P2) and both base plate pressure ports (P3 and P4) must be utilized for proper operation. • P1 and P2 are typically connected and powered by a single air pathway.
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Page 10: Travel Adjustment
Section 2: Installation Installation, Operation and Maintenance Manual April 2016 RGS011110-2 Rev. 0 2�4 Travel Adjustment The following instructions are for Left-Hand orientated actuators. For non-standard models, clockwise and counterclockwise motion will be the inverse of what is described below. Check the actuator model and orientation before adjusting the Travel Stops. - Page 11 Installation, Operation and Maintenance Manual Section 2: Installation RGS011110-2 Rev. 0 April 2016 Set Counterclockwise Rotation (Travel Stops B) Relieve all pressure from the actuator. Loosen travel stop nuts on Travel Stops B. Ensure actuator lockout (if provided) is disengaged. Unthread Travel Stops B-1 and B-2 four to five full turns each.* Adjust both B-1 travel stops until they contact the clevis simultaneously.
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Page 12: Section 3: Troubleshooting
Section 3: Troubleshooting Installation, Operation and Maintenance Manual April 2016 RGS011110-2 Rev. 0 Section 3: Troubleshooting WARNING: DEPRESSURIZE COMPONENTS PROPERLY Do not remove/loosen tie rod nuts unless cylinder is fully depressurized. Components may exit the actuator dangerously if disassembly is attempted under pressure. Ensure that all process lines are safe. -
Page 13: Section 4: Maintenance
Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-2 Rev. 0 April 2016 Section 4: Maintenance 4�1 Periodic Maintenance Schedule General service actuators do not require periodic maintenance. Severe service actuators may require periodic maintenance based on operating conditions. Severe service may include but is not limited to high speed, high cycle, highly corrosive, explosive atmosphere, and others. - Page 14 Installation, Operation and Maintenance Manual Section 4: Maintenance April 2016 RGS011110-2 Rev. 0 Remove the end cap. Be careful not to lose the cylinder seal located on the internal side of the end cap. Figure 7 Remove the cylinder. Be careful not to damage the internal surface of the cylinder as this will compromise the piston’s ability to seal.
- Page 15 Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-2 Rev. 0 April 2016 Secure the end cap with the tie rod hex nuts you removed in step two. Hand tighten, and then torque the hex nuts to half and then full values according to the table below using the pattern designated.
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Page 16: Rod Seal Replacement
Installation, Operation and Maintenance Manual Section 4: Maintenance April 2016 RGS011110-2 Rev. 0 Complete steps 1 to 10 on the second force module of the actuator. Leak Test. Reinstate the actuator to service. 4�4 Rod Seal Replacement Follow steps 1 to 4 of Section 4.3. Apply heat to piston hub and set screw to break thread locker, and remove set screw. - Page 17 Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-2 Rev. 0 April 2016 Remove the seal retainer and seal carrier. Figure 12 Seal Retainer Seal Carrier Lubricate the new seal carrier, piston bolt, the internal and external seal carrier O-rings. Place the internal and external seal carrier O-rings in their respective grooves on the seal carrier.
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Page 18: Yoke Seal And Bushing Replacement
Installation, Operation and Maintenance Manual Section 4: Maintenance April 2016 RGS011110-2 Rev. 0 4�5 Yoke Seal and Bushing Replacement In Bettis RGS F-Series actuators, the yoke seal does not serve any purpose other than to prevent external contaminants from entering the torque module. The following steps can be followed to replace the yoke seal and/or bushings. - Page 19 Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-2 Rev. 0 April 2016 Remove any hex nuts and bolts securing the two halves of the body together. Figure 15 Separate the two halves of the body. This may require the use of a pry bar as the joint between the body halves is filled with sealant during assembly.
- Page 20 Installation, Operation and Maintenance Manual Section 4: Maintenance April 2016 RGS011110-2 Rev. 0 Inspect the yoke seals and bushings, and replace all necessary components. Be sure to lubricate the new yoke seals with the correct Bettis approved lubri- cant prior to their installation. Figure 17 Yoke Seals Yoke Bushings...
- Page 21 Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-2 Rev. 0 April 2016 Apply a bead of Bettis approved sealant along the joining edges of the bottom half of the body. Figure 19 Place the top half of the body onto the bottom half and secure the two together with the original bolts and hex nuts removed in step six.
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Page 22: Pins And Rollers Replacement
Installation, Operation and Maintenance Manual Section 4: Maintenance April 2016 RGS011110-2 Rev. 0 4�6 Pins and Rollers Replacement Figure 20 Body Rollers Pin (internal) Piston Bolt Clevis Yoke Roller The following steps can be followed to replace the pins and rollers of the force modules. Complete steps 1 to 5 of Section 4.5. - Page 23 Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-2 Rev. 0 April 2016 Coat the new pins and rollers with the appropriate Bettis approved lubricant and reassemble them. Apply high strength thread locker. Align pin slot with hole in the clevis and install set screw, torque the pin set screw to the corre- sponding value in the table below.
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Page 24: Appendix
Installation, Operation and Maintenance Manual Appendix April 2016 RGS011110-2 Rev. 0 Appendix A: A�1 Force Module 26 27 28 Appendix... - Page 25 Installation, Operation and Maintenance Manual Appendix RGS011110-2 Rev. 0 April 2016 4�6�1 Force Module Part Number Number Part Body Roller Pin Set Screw Yoke Roller Clevis Clevis Set Screw Hex Nut, FM Mount Stud Hex Nut, Tie Rod Backup* Base Plate External Seal Carrier O-ring Seal Carrier Internal Seal Carrier O-ring...
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Page 26: Torque Module
Installation, Operation and Maintenance Manual Appendix April 2016 RGS011110-2 Rev. 0 A�2 Torque Module Appendix... - Page 27 Installation, Operation and Maintenance Manual Appendix RGS011110-2 Rev. 0 April 2016 4�6�2 Torque Module Part Number Number Part Travel Stop B Travel Stops Nut B Top Hat Mounting Bolt Top Hat Bolt Top Hat Top Hat Indicator Top Hat Base Body Assembly Yoke Bushing Body Assembly Nuts...
- Page 29 Tianjin 301700 Holland Fasor 6 P. R. China Székesfehérvár 8000 The Emerson logo is a trademark and service mark of Emerson Electric Co. T +86 22 8212 3300 Hungary Bettis is a mark of one of the Emerson family of companies.