Related Manuals for Emerson Bettis CBA*30-SR series
Summary of Contents for Emerson Bettis CBA*30-SR series
- Page 1 Service Instructions 137463E Rev. D August 2015 CBAX30 Spring-Return Series Pneumatic Actuators Disassembly and Reassembly...
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Page 3: Table Of Contents
Service Instructions Table of Contents 137463E Rev. D August 2015 Table of Contents Section 1: Introduction General Service Information ................1 Definitions ..................... 2 General Safety Information ................2 Bettis Reference Materials ................3 Service Support Items ..................3 Lubrication Requirements ................3 General Tool Information ................ - Page 4 Service Instructions Table of Contents 137463E Rev. D August 2015 Section 8: Document Revision ��������������������������������������������22 Appendix A: List of Tables ���������������������������������������������������23 Appendix B: List of Drawings ����������������������������������������������24 Part No. VA129743, CBA300-SRX Assembly Drawing ........24 Part No. 129745, CBA300-SRX-M3HW Assembly Drawing ......25 Table of Contents...
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Page 5: Section 1: Introduction
Service Instructions Section 1: Introduction 137463E Rev. D August 2015 Section 1: Introduction 1�1 General Service Information 1.1.1 This service procedure is offered as a guide to enable general maintenance to be performed on Bettis™ CBAX30-SR spring-return series actuators. The following is a list of general CBAX30 SR model numbers: Table 1�... -
Page 6: Definitions
Section 1: Introduction Service Instructions 137463E Rev. D August 2015 1�2 Definitions WARNING: If not observed, user incurs a high risk of severe damage to actuator and/or fatal injury to personnel. CAUTION: If not observed, user may incur damage to actuator and/or injury to personnel. NOTE: Advisory and information comments provided to assist maintenance personnel to carry out maintenance procedures. -
Page 7: Bettis Reference Materials
Service Instructions Section 1: Introduction 137463E Rev. D August 2015 WARNING: FOLLOW COMPANY SAFETY PROCEDURES This procedure should not supersede or replace any customer’s plant safety or work procedures. If a conflict arises between this procedure and the customer’s procedures, the differences should be resolved in writing between an authorized customer's representative and an authorized Bettis representative. -
Page 8: Actuator Weight
Section 1: Introduction Service Instructions 137463E Rev. D August 2015 1�8 Actuator Weight Table 2� Actuator Weight Approximate Approximate Weight (2) Weight (2) Actuator Model Actuator Model CBA730-SR40 (1) 71.7 CBA930-SR40 (1) 88.5 CBA730-SR60 (1) 160.5 72.8 CBA930-SR60 (1) 91.6 CBA730-SR80 (1) 73.9 CBA930-SR80 (1) -
Page 9: Actuator Start-Up
Service Instructions Section 1: Introduction 137463E Rev. D August 2015 NOTE: Scale and debris can damage control valves, solenoids and seals. 1�11 Actuator Start-up 1.11.1 Prestart-up checks Inspect to ensure the unit has been mounted onto valve properly. Gear flange mounting bolts, stem key, set screw(s) are installed and secured. -
Page 10: Actuator Operation
Section 2: Actuator Disassembly Service Instructions 137463E Rev. D August 2015 1�12 Actuator Operation 1.12.1 Controlled Operation: Controlled operation is accomplished by pressurizing and/or depressurizing the appropriate cylinder inlet(s) of a double-acting. Do not exceed pressures indicated on actuator nameplate. 1.12.2 Manual Operation: All pressure must be vented or equalized on both sides of the pneumatic piston prior to manual operation. -
Page 11: Section 2: Actuator Disassembly
Service Instructions Section 2: Actuator Disassembly 137463E Rev. D August 2015 Section 2: Actuator Disassembly 2�1 General Disassembly WARNING: DANGEROUS GAS AND/OR LIQUIDS It is possible, that the actuator may contain a dangerous gas and/or liquids. Ensure that all proper measures have been taken to prevent exposure or release of these types of contaminants before commencing any work. -
Page 12: Spring Cylinder Disassembly
Section 2: Actuator Disassembly Service Instructions 137463E Rev. D August 2015 NOTE: CBAX30-SR-M3 or M3HW models the M3 cannot be removed now. The M3 used in these models can be removed later in this procedure using step 2.3.8. 2�2 Spring Cylinder Disassembly NOTE: Review Section 2 steps 2.1.1 through 2.1.5 before proceeding with spring cylinder disassembly. -
Page 13: Housing Disassembly
Service Instructions Section 2: Actuator Disassembly 137463E Rev. D August 2015 NOTE: Piston (4-50) is an assembly made up of one roll pin and one yoke pin; do not attempt to disassemble the piston assembly. 2.2.10 On models CBA830-SR, CBA930-SR and CBA1030-SR remove cylinder adapter (4-15). 2�3 Housing Disassembly 2.3.1... -
Page 14: Section 3: Actuator Reassembly
Section 3: Actuator Reassembly Service Instructions 137463E Rev. D August 2015 Section 3: Actuator Reassembly 3�1 General Reassembly CAUTION: CHECK SHELF LIFE OF SEALS Only new seals that are still within the seals expectant shelf life should be installed into the actuator being refurbished. - Page 15 Service Instructions Section 3: Actuator Reassembly 137463E Rev. D August 2015 3.2.1 M3 JACKSCREW INSTALLATION: 3.2.1.1 Apply a coating of lubricant to outer diameter and inner diameter threads of M3 jackscrew adapter (6-55). 3.2.1.2 Coat O-ring seal (7-65) with lubricant and install into outer diameter seal groove located in the M3 jackscrew adapter (6-55).
- Page 16 Section 3: Actuator Reassembly Service Instructions 137463E Rev. D August 2015 3.2.6 Coat rod wiper (2-60) with lubricant and install into the outer most groove located in the lower torque shaft through hole of housing (1-10). NOTE: The cup of rod wiper will be installed facing to the outside of housing (1-10). 3.2.7 Coat yoke (1-20) with lubricant and install into housing (1-10).
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Page 17: Spring Cylinder Reassembly
Service Instructions Section 3: Actuator Reassembly 137463E Rev. D August 2015 WARNING: DO NOT SCRATCH CENTER BAR ASSEMBLY Care should be taken during installation of center bar assembly so as to not scratch it or damage the housing adapter O-ring seal (5-20). NOTE: Rotate the hex nut down the M3 jackscrew until it is next to the M3 adapter. - Page 18 Section 3: Actuator Reassembly Service Instructions 137463E Rev. D August 2015 NOTE: While holding the center bar assembly flush against the housing adapter (6-10), push piston assembly (4-50) into housing (1-10) as far as the piston will go. 3.3.9 Apply a coating of lubricant to entire bore of spring cylinder (4-10). 3.3.10 Spring cylinder (4-10) installation: 3.3.10.1 For CBA830-SR, CBA930-SR and CBA1030-SR models, install the lubricated spring cylinder (4-10) over the piston and up-against the...
- Page 19 Service Instructions Section 3: Actuator Reassembly 137463E Rev. D August 2015 3.3.22 Install O-ring seal (5-30) onto ES or stop screw (4-30) until it is flush with the end cap (4-20). 3.3.23 Install hex nut (4-40) and washer (4-90) onto ES or stop screw (4-30) do not tighten.
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Page 20: Section 4: Actuator Testing
Section 4: Actuator Testing Service Instructions 137463E Rev. D August 2015 Section 4: Actuator Testing 4�1 Actuator Testing 4.1.1 Leak Test - General - A small amount of leakage may be tolerated. Generally, a small bubble which breaks about three seconds after starting to form is considered acceptable. -
Page 21: Return To Service
PED by pressuring both sides of the piston to avoid damage and over torquing of the actuator components. If further future testing in the field is necessary, Emerson should be contacted for guidance. 4�2 Return to Service 4.2.1... -
Page 22: Section 5: Field Conversions
Section 5: Field Conversions Service Instructions 137463E Rev. D August 2015 Section 5: Field Conversions 5�1 Fail Mode Reversal (CW to CCW, or CCW to CW) 5.1.1 Disassemble actuator. (Refer to Section 2) 5.1.2 Converting to CCW: 5.1.2.1 Assemble actuator with spring cylinder assembly on the right side of housing and housing adapter assembly on left side using the orientation below. -
Page 23: Section 6: Troubleshooting
In the unlikely event of a fault developing, the following Fault Location Table is provided to assist the service engineer to perform troubleshooting. This table is designed to cover as wide a range of Emerson Bettis actuators as possible. Reference to equipment not supplied should be ignored. -
Page 24: Operational Test
Section 6: Troubleshooting Service Instructions 137463E Rev. D August 2015 6�2 Operational Test 6.2.1 Full Stroke Test The “Full Stroke Test” (“On-line”) must be performed to satisfy the PFD (average probability of failure on demand) value. The full stroke test frequencies will be defined by the final installer to achieve the defined SIL level. -
Page 25: Section 7: Removal And Decommissioning
If a conflict arises between this procedure and the customer's procedures, the differences should be resolved in writing between an authorized customer’s representative and an authorized Emerson/Bettis representative. CAUTION: ISOLATE AND POWER OFF ACTUATOR Make sure actuator is isolated before removing from valve. Turn OFF the power medium and bleed off all pressure first, including storage tank (if present). -
Page 26: Section 8: Document Revision
Section 8: Document Revision Service Instructions 137463E Rev. D August 2015 Section 8: Document Revision Table 4� Revision Overview DATE BY * DATE Released May 2002 B. Cornelius May 2002 19527 Apr. 2007 UPDATED L. Ramirez Apr. 2007 VAWCO2292 Jan. 2012 UPDATED N. -
Page 27: Appendix A: List Of Tables
Service Instructions Appendix 137463E Rev. D August 2015 Appendix A: List of Tables Table 1 CBAX30-SR Model Numbers .................. 1 Table 2 Actuator Weight ....................4 Table 3 Fault Location Table ..................... 19 Table 4 Revision Overview ....................22 Appendix... -
Page 28: Appendix B: List Of Drawings
Appendix Service Instructions 137463E Rev. D August 2015 Appendix B: List of Drawings B�1 Part No� VA129743, CBA300-SRX Assembly Drawing Appendix... -
Page 29: Part No. 129745, Cba300-Srx-M3Hw Assembly Drawing
Service Instructions Appendix 137463E Rev. D August 2015 B�2 Part No� 129745, CBA300-SRX-M3HW Assembly Drawing Appendix... - Page 31 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.