Related Manuals for Emerson Bettis CBB Series
Summary of Contents for Emerson Bettis CBB Series
- Page 1 Service Instructions 137465E Rev. F May 2012 CBB-Series Spring Return Pneumatic Actuators...
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Page 3: Table Of Contents
Service Instructions Table of Contents 137465E Rev. F May 2012 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: Section 1: Introduction
Section 1: Introduction Service Instructions May 2012 137465E Rev. F 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 CBB-SR double acting series actuators. The following is a list of general CBB-SR models numbers. -
Page 5: Definitions
Section 1: Introduction Service Instructions 137465E Rev. F May 2012 1.1.9 Bettis recommends that disassembly of the actuator should be done in a clean area on a workbench. 1�2 Definitions WARNING: If not observed, user incurs a high risk of severe damage to actuator and/or fatal injury to personnel. -
Page 6: Bettis Reference Materials
Section 1: Introduction Service Instructions May 2012 137465E Rev. F 1�4 Bettis reference materials 1.4.1 CBBXXX Assembly Drawing use part number 152230. 1.4.2 CBBXXX-M3HW Assembly Drawing use part number 152608. 1�5 Service support items 1.5.1 Bettis Service Kit. 1.5.2 Commercial leak testing solution. 1.5.3 Non-hardening thread sealant. -
Page 7: Actuator Weight
Section 1: Introduction Service Instructions 137465E Rev. F May 2012 1�8 Actuator weight Table 2� Actuator weight Actuator Actuator Approximate weight (3) Approximate weight (3) Model Model 315-SR40 (1) 10.0 520-SR40 (1) 20.4 315-SR60 (1) 10.4 520-SR60 (1) 21.8 315-SR80 (1) 11.8 520-SR80 (1) 22.2... -
Page 8: Section 2: Actuator Disassembly
Section 2: Actuator Disassembly Service Instructions May 2012 137465E Rev. F 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 contami- nants before commencing any work. -
Page 9: Spring Cylinder Disassembly
Service Instructions Section 2: Actuator Disassembly 137465E Rev. F May 2012 2�2 Spring cylinder disassembly NOTE: Review Section 2 steps 2.1.1 through 2.1.2 before proceeding with cylinder disassembly. CAUTION: SPRINGS ARE PRELOADED The spring in CBB Series Spring Return Actuators are preloaded. WARNING: POTENTIALLY DANGEROUS DISASSEMBLY Actuator must be disassembled in the following manner. - Page 10 Section 2: Actuator Disassembly Service Instructions May 2012 137465E Rev. F NOTE: The end cap (4-20) can be held in position by holding the end cap (4-20) with an adjustable wrench. 2.2.6 Continue to rotate center bar assembly (8-10) counter-clockwise (CCW) until the spring preload is eliminated.
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Page 11: Housing Disassembly
Service Instructions Section 2: Actuator Disassembly 137465E Rev. F May 2012 2�3 Housing disassembly 2.3.1 Remove center bar assembly (8-10) from housing (1-10). 2.3.2 Remove both retaining rings (1-60) from torque shaft (1-30). On the CBB, remove washers (1-65) from housing. 2.3.3 The following steps may be required before disassembly can continue. -
Page 12: Section 3: Actuator Reassembly
Section 3: Actuator Reassembly Service Instructions May 2012 137465E Rev. F 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 13: Housing Reassembly
Service Instructions Section 3: Actuator Reassembly 137465E Rev. F May 2012 3�2 Housing reassembly NOTE: In section 3.2 where the step indicates to "lubricate, coat or apply lubricant", use lubricant as identified in Section 1 step 1.6 for lubricating the part being installed. Review Section 3 steps 3.1.1 through 3.1.4 before proceeding with housing reassembly. - Page 14 Section 3: Actuator Reassembly Service Instructions May 2012 137465E Rev. F NOTE: Move the o-ring seal (2-30) down the M3 jackscrew until it is next to the M3 adapter. 3.2.2.8 Install hex nut (1-80) onto M3 jackscrew (1-70). NOTE: Rotate the hex nut down the M3 jackscrew until it is next to the M3 adapter. 3.2.3 Apply a coating of lubricant to the torque shaft holes located on each side of housing (1-10).
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Page 15: Spring Cylinder Reassembly
Service Instructions Section 3: Actuator Reassembly 137465E Rev. F May 2012 3.2.8 Install one of the new retaining rings (1-60) onto the exposed end of the torque shaft, making certain it is properly seated in the groove of the torque shaft (1-30). Gently push and rotate the torque shaft (1-30) until the retaining ring (1-60) is pressed against the housing (1-10). - Page 16 Section 3: Actuator Reassembly Service Instructions May 2012 137465E Rev. F NOTE: While holding the center bar assembly flush against the housing, push piston (4-50) into housing (1-10) as far as the piston will go. 3.3.7 Apply a coating of lubricant to entire bore of spring cylinder (4-10). 3.3.8 Spring cylinder installation: 3.3.8.1 For CBB415-SR, CBB520-SR and CBB725-SR models install the lubricated...
- Page 17 Service Instructions Section 3: Actuator Reassembly 137465E Rev. F May 2012 3.3.17 Continue to rotate center bar assembly (8-10) clockwise until spring (4-70) is fully compressed, the spring cylinder is seated against the flange of housing (1-10) or adapter (4-15) and end cap (4-20) is properly seated in spring cylinder (4-10). 3.3.18 Tighten center bar assembly (8-10) to the proper torque as specified in the following chart.
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Page 18: Section 4: Actuator Testing
Section 4: Actuator Testing Service Instructions May 2012 137465E Rev. F 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 19: Return To Service
Service Instructions Section 4: Actuator Testing 137465E Rev. F May 2012 NOTE: This test is to be done off of the valve or when valve stem is not coupled to the actuator torque shaft. 4.1.8.1 Adjust the pressure regulator to the pressure rating that the customer uses to operate the actuator during normal service. -
Page 20: Section 5: Document Revision
Section 5: Document Revision Service Instructions May 2012 137465E Rev. F Section 5: Document Revision Table 5� Revision overview DATE BY * DATE 19527 April 2007 COMPILED D.Blahnik 6/30/09 40548 12 May 2009 CHECKED B.Jumawan 6/30/09 40677 6/30/09 APPROVED K.Chin 6/30/09 0526 001 5/08/2012... -
Page 21: Appendix A: List Of Tables
Service Instructions Appendix 137465E Rev. F May 2012 Appendix A: List of Tables Table 1 CBB-SR Model numbers ..................1 Table 2 Actuator weight ....................4 Table 3 Tightening torque center bar ................14 Table 4 Pressure requirement and limitations ..............16 Table 5 Revision overview .................... -
Page 22: Appendix B: List Of Drawings
Appendix Service Instructions May 2012 137465E Rev. F Appendix B: List of Drawings B�1 Part No� 152230, CBBXXX-SRX Assembly Dwg Appendix... -
Page 23: Part No. 152608, Cbbxxx-Srx-M3Hw Assembly Dwg
Service Instructions Appendix 137465E Rev. F May 2012 B�2 Part No� 152608, CBBXXX-SRX-M3HW Assembly Dwg Appendix... - Page 25 ©2017 Emerson. All rights reserved. No. 1 Lai Yuan Road EUROPE Wuqing Development Area The Emerson logo is a trademark and service mark of Emerson Electric Co. Tianjin 301700 Berenyi u. 72- 100 Bettis is a mark of one of the Emerson family of companies.