Related Manuals for Emerson F-Series
Summary of Contents for Emerson F-Series
- Page 1 Installation, Operation and Maintenance Manual RGS011110-3 Rev. 0 November 2015 Bettis RGS F-Series Spring-Return Actuators...
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Page 3: Table Of Contents
Installation, Operation and Maintenance Manual Table of Contents RGS011110-3 Rev. 0 November 2015 Table of Contents Section 1: Overview ��������������������������������������������������������������1 Section 2: Installation �����������������������������������������������������������2 Valve Attachment ..................3 Accessory Mounting ..................3 Piping and Operation ................... 4 Travel Adjustment ..................7 Section 3: General Troubleshooting ��������������������������������������9 Section 4: Maintenance �������������������������������������������������������... -
Page 4: Section 1: Overview
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. The force modules contain the pistons which provide linear motion. -
Page 5: Section 2: Installation
Installation, Operation and Maintenance Manual Section 2: Installation RGS011110-3 Rev. 0 November 2015 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
1084 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 7: Piping And Operation
November 2015 2�3 Piping and Operation The operation of a Bettis RGS F-Series Spring-Return (SR) actuator is comparable to any spring-return scotch yoke actuator. Instrument air, water, and other power gases and fluids may be used to cycle the actuator so long as construction materials were chosen accordingly and maximum allowable pressure is not exceeded. - Page 8 Section 2: Installation Installation, Operation and Maintenance Manual November 2015 RGS011110-3 Rev. 0 All Bettis actuators are shipped in the fail clockwise (Left-Hand) orientation unless ordered as fail counter-clockwise (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 RGS011110-3 Rev. 0 November 2015 Piping Guidelines: • Both end cap pressure ports (P1 and P2) 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 November 2015 RGS011110-3 Rev. 0 2�4 Travel Adjustment The following instructions are for fail clockwise (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 RGS011110-3 Rev. 0 November 2015 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: General Troubleshooting
Section 3: Troubleshooting Installation, Operation and Maintenance Manual November 2015 RGS011110-3 Rev. 0 Section 3: General Troubleshooting Table 2� ISSUE CAUSE SOLUTION Verify operating pressure is Supply pressure too low correct Worn internal components See Section 4.4 to 4.6 Irregular or Stuttering Stroke Damaged or valve Consult valve manufacturer Broken Springs... -
Page 13: Section 4: Maintenance
Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-3 Rev. 0 November 2015 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 November 2015 RGS011110-3 Rev. 0 Figure 7 Piston O-ring Piston Wiper O-ring Piston Bolt Springs Spring Retainer Safety Collar WARNING: DO NOT REMOVE/LOOSEN TIE ROD NUTS Do not remove/loosen tie rod nuts unless cylinder is fully depressurized. Components may exit the actuator dangerously if disassembly is attempted under pressure.
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Page 15: Maintenance Kit
Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-3 Rev. 0 November 2015 4�3 Maintenance Kit To purchase your actuator maintenance kit, contact your Bettis distributor. Please have the serial number of your actuator available. This number may be found on the actuator label or stamped into the body of the actuator. - Page 16 Installation, Operation and Maintenance Manual Section 4: Maintenance November 2015 RGS011110-3 Rev. 0 Remove the cylinder. Be careful not to damage the internal surface of the cylinder as this will compromise the piston’s ability to seal. Figure 9 Replace the piston O-ring and wiper ring as needed. Be sure to lubricate the new O-ring and wiper ring with the correct Bettis approved lubricant if they are replaced.
- Page 17 Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-3 Rev. 0 November 2015 Place the end cap back over the tie rods. Be sure that the cylinder is seated in the cylinder seal groove of the end cap with the cylinder seal still in place between the cylinder and the end cap.
- Page 18 Installation, Operation and Maintenance Manual Section 4: Maintenance November 2015 RGS011110-3 Rev. 0 Figure 12 4 Bolt Pattern 6 Bolt Pattern 8 Bolt Pattern 10 Bolt Pattern 12 Bolt Pattern Complete steps 1 to 10 on the second force module of the actuator. Leak Test.
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Page 19: Yoke Seal And Bushing Replacement
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 20 Installation, Operation and Maintenance Manual Section 4: Maintenance November 2015 RGS011110-3 Rev. 0 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 21 Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-3 Rev. 0 November 2015 Inspect the yoke seals and bushings, and replace all necessary components. Be sure to lubricate the new yoke seals with the correct Bettis approved lubricant prior to their installation. Figure 17 Yoke Seals Yoke Bushings...
- Page 22 Installation, Operation and Maintenance Manual Section 4: Maintenance November 2015 RGS011110-3 Rev. 0 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 23: Pins And Rollers Replacement
Installation, Operation and Maintenance Manual Section 4: Maintenance RGS011110-3 Rev. 0 November 2015 4�6 Pins and Rollers Replacement Figure 20 Pin (internal) Yoke Roller Piston Bolt Body Rollers Clevis 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 24 Installation, Operation and Maintenance Manual Section 4: Maintenance November 2015 RGS011110-3 Rev. 0 Figure 21 Set Screw 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 corresponding value in the table below.
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Page 25: Appendix
Installation, Operation and Maintenance Manual Appendix RGS011110-3 Rev. 0 November 2015 Appendix A: A�1 Force Module 23 24 Appendix... - Page 26 Installation, Operation and Maintenance Manual Appendix November 2015 RGS011110-3 Rev. 0 4�6�1 Force Module Part Number Number Part Body Roller Pin Set Screw Yoke Roller Clevis Hex Nut, FM Mount Stud Hex Nut, Tie Rod Safety Collar Spring Retainer External Spring(s) Internal Spring(s) Piston Set Screw Piston Bolt...
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Page 27: Torque Module
Installation, Operation and Maintenance Manual Appendix RGS011110-3 Rev. 0 November 2015 A�2 Torque Module Appendix... - Page 28 Installation, Operation and Maintenance Manual Appendix November 2015 RGS011110-3 Rev. 0 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 Bolt Yoke Bushing Body Assembly Nuts...
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