Related Manuals for Emerson Bettis CBB Series
Summary of Contents for Emerson Bettis CBB Series
- Page 1 Service Instructions VA001-196-30 Rev. 1 October 2015 CBB Double-Acting Series Pneumatic Actuators Disassembly and Reassembly...
-
Page 3: Table Of Contents
Service Instructions Table of Contents VA001-196-30 Rev. 1 October 2015 Table of Contents Section 1: Introduction General Service Information ................1 Definitions ....................2 General Safety Information ................2 Bettis Actuator Reference Materials ............... 3 Service Support Items ................... 3 Lubrication Requirements ................ -
Page 4: Section 1: Introduction
Use a non-hardening thread sealant on all pipe threads. CAUTION: FOLLOW MANUFACTURER'S INSTRUCTIONS Apply the thread sealant per the manufacturer’s instructions. 1�1�9 Emerson recommends that disassembly of the actuator should be done in a clean area on a workbench. Introduction... -
Page 5: Definitions
M3: Manual jackscrew override 1�3 General Safety Information 1�3�1 Products supplied by Emerson, in its “as shipped” condition, are intrinsically safe if the instructions contained within this service instruction are strictly adhered to and executed by well trained, equipped, prepared and competent personnel. WARNING: FOLLOW WARNING AND CAUTION SIGNS For the protection of personnel working on Bettis actuators, this procedure should be reviewed and implemented for safe disassembly and reassembly. -
Page 6: Bettis Actuator Reference Materials
Lubricants other than those listed in steps 1.6.2 should not be used without prior written approval of Emerson product engineering. The lubricant item number on some assembly drawings is item (5) while the Bettis service kits lubricant item number is item number (500). -
Page 7: Actuator Storage
Section 1: Introduction Service Instructions VA001-196-30 Rev. 1 October 2015 1�9 Actuator Storage For applications where the actuator is not put into immediate service, it's recommended that the actuator be cycled with regulated clean/dry pneumatic pressure at least once per month. -
Page 8: Actuator Operation
Section 1: Introduction Service Instructions October 2015 VA001-196-30 Rev. 1 1�11�2 Check Connections: Pneumatic/hydraulic components connected as per schematic enclosed or in service manual supplied. Pneumatic supply connected to identified ports. Electrical connections terminals are secure. Wiring as per enclosed diagram or service manual supplied. 1�11�3 When actuator is first put into service it should be cycled with regulated pneumatic pressure. -
Page 9: Section 2: Actuator Disassembly
Service Instructions Section 2: Actuator Disassembly VA001-196-30 Rev. 1 October 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 10 Section 2: Actuator Disassembly Service Instructions October 2015 VA001-196-30 Rev. 1 2�2�1�2 For CBB315/420/520/525/725-M3 or M3HW: 2�2�1�2�1 Remove retainer ring (12-30) and groove pin (12-20) from optional hex drive hub or from hand wheel (12-10). 2�2�1�2�2 Remove optional hex drive hub or hand wheel (12-10) from M3 jackscrew (1-70). 2�2�1�2�3 Loosen and remove hex nut (4-40) from M3 jackscrew (1-70). NOTE: CBB315/420/520/525/725-M3 or M3HW models the M3 jackscrew (1-70) cannot be removed now.
-
Page 11: Housing Disassembly
Service Instructions Section 2: Actuator Disassembly VA001-196-30 Rev. 1 October 2015 2�3 Housing Disassembly NOTE: Review Section 2 steps 2.1.1 through 2.1.2 before proceeding with housing disassembly. 2�3�1 Remove hex nut (1-80) as follows: CBB315 through 725 standard housing stop screw or extended stop (ES) use step 2.3.1.1. CBB315-M3/M3HW through CBB725-M3/ M3HW use step 2.3.1.2. 2�3�1�1 CBB315 through 725 housing stop screw or extended stop screw (ES) 2�3�1�1�1 Loosen and remove hex nut (1-80) and CSK washer (2-35) from stop screw (1-70) located in housing (1-10). 2�3�1�1�2 Remove stop screw (1-70) from the end of housing (1-10). - Page 12 Section 2: Actuator Disassembly Service Instructions October 2015 VA001-196-30 Rev. 1 NOTE: The M3 jackscrew (1-70) will be removed from the inside of housing (1-10). 2�3�8 Actuator models CBB420/520/525/725 with a M3 or M3HW mounted in the outboard end of housing (1-10) complete steps 2.3.8.1 and 2.3.8.2. 2�3�8�1 Remove retainer ring (2-40) from M3 adapter (1-90).
-
Page 13: Section 3: Actuator Reassembly
Service Instructions Section 3: Actuator Reassembly VA001-196-30 Rev. 1 October 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. 3�1�1 Remove and discard all old seals and gaskets. 3�1�2 All parts should be cleaned to remove all dirt and other foreign material prior to inspection. - Page 14 Section 3: Actuator Reassembly Service Instructions October 2015 VA001-196-30 Rev. 1 Use assembly drawing part numbers VA-001-005-72 for this section. In section 3.2 where the step indicates to “lubricate, coat or apply lubricant”, use lubricant asidentified in Section 1 step 1.6 for lubricating the part being installed. 3�2�1 Apply a coating of lubricant to the torque shaft holes located on each side of housing (1-10).
- Page 15 Service Instructions Section 3: Actuator Reassembly VA001-196-30 Rev. 1 October 2015 3�2�8 Rotate the torque shaft (1-30) so that the arms of yoke (1-20) point out the open end of housing (1-10). Coat O-ring seal (5-20) with lubricant and install into inner diameter seal groove 3�2�9 located in the center bar hole of housing (1-10).
- Page 16 Section 3: Actuator Reassembly Service Instructions October 2015 VA001-196-30 Rev. 1 NOTE: Position the end cap (4-20) so that the inlet port is at the bottom and the ES or stop screw (4-30) is at the top. WARNING: FOLLOW END CAP INSTALLATION STEPS If step 3.3.24 is not completed as described, the center bar O-ring seals (5-20) may become a source of pressure leakage and cause the actuator to fail.
-
Page 17: Actuator Reassembly Per Cbb Models Listed In Step 3.1.5.2
Service Instructions Section 3: Actuator Reassembly VA001-196-30 Rev. 1 October 2015 3�3 Actuator Reassembly per CBB Models Listed in Step 3�1�5�2 NOTE: The following steps are used to reassemble the models: CBB315-M3, CBB420-M3, CBB520-M3, CBB525-M3 and CBB725-M3 (also included M3 jackscrew with hand wheel i.e. - Page 18 Section 3: Actuator Reassembly Service Instructions October 2015 VA001-196-30 Rev. 1 3�3�2�3 Apply a light coating of lubricant to the threads of M3 jackscrew (1-70). 3�3�2�4 Insert and rotate M3 jackscrew (1-70) into M3 adapter (1-90). NOTE: Rotate the M3 jackscrew into the adapter until the inboard end of the jackscrew is up against the adapter.
- Page 19 Service Instructions Section 3: Actuator Reassembly VA001-196-30 Rev. 1 October 2015 3�3�7 Hold the yoke key (1-40) down with your thumb; insert the torque shaft (1-30) by gently rotating it into the housing (1-10) and yoke (1-20) on the opposite side of the installed O-ring seal (2-20).
- Page 20 Section 3: Actuator Reassembly Service Instructions October 2015 VA001-196-30 Rev. 1 3�3�21 Actuators equipped with cylinder adapter (4-15), models CBB520 and 725, do steps as follows: 3�3�21�1 Install cylinder adapter (4-15) onto the flange of housing (1-10) and over O-ring seal (5-10), with the stepped outer diameter, of cylinder adapter (4-15), facing away from housing (1-10). 3�3�21�2 Install one o-seal (5-15) onto stepped diameter of cylinder adapter (4-15).
- Page 21 Service Instructions Section 3: Actuator Reassembly VA001-196-30 Rev. 1 October 2015 NOTE: Rotate the M3 jackscrew into the M3 adapter (4-55) until the inboard end of the M3 jack- screw is up against the M3 adapter (4-55). The M3 adapter will be installed from the cylinder side of end cap (4-20). 3�3�26�5 Install M3 adapter (4-55) into end cap (4-20).
- Page 22 Section 3: Actuator Reassembly Service Instructions October 2015 VA001-196-30 Rev. 1 WARNING: DO NOT ALLOW END CAP TO ROTATE Do not allow end cap (4-20) to rotate during center bar tightening. The end cap must maintain the position as described in step 3.3.27. M3 jackscrew must be installed to be in alignment with the target located on the piston assembly (4-50).
-
Page 23: Section 4: Actuator Testing
Service Instructions Section 4: Actuator Testing VA001-196-30 Rev. 1 October 2015 Section 4: Actuator Testing 4�1 Actuator Testing 4�1�1 Leak Test: A small amount of leakage may be tolerated. Generally, a small bubble which breaks about three seconds after starting to form is considered acceptable. 4�1�2 All areas, where leakage may occur, are to be checked using a commercial leak testing solution. - Page 24 The actuator's main pressure bearing parts will be tested in controlled conditions 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�1�11 After the actuator is installed back on the valve all accessories should be hooked up and tested for proper operation and replaced, if found defective.
-
Page 25: Section 5: Troubleshooting
In the unlikely event of a fault developing, the following Fault Location Table is provided to assist the service engineer. This table is designed to cover a wide a range of Emerson Bettis actuators as possible. Reference to equipment not supplied should be ignored. -
Page 26: Operational Test
Section 5: Troubleshooting Service Instructions October 2015 VA001-196-30 Rev. 1 5�2 Operational Test 5�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 27: Section 6: Removal And Decommissioning
The below basic 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 Emerson/Bettis representative. CAUTION: CHECK YOKE KEY ALIGNMENT 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). Next, bleed off pilot pres-... -
Page 28: Section 7: Document Revision
Section 7: Document Revision Service Instructions October 2015 VA001-196-30 Rev. 1 Section 7: Document Revision Table 6� Revision Overview DATE REVISION STATUS BY * DATE Released May 2012 Charles Khalid S. Rico May 2012 VAWCO2794 October 2015 UPDATED Charles Khalid S. Rico October 2015 * Signatures on file Bettis, Houston, Texas Document Revision... -
Page 29: Appendix A: List Of Tables
Service Instructions Appendix VA001-196-30 Rev. 1 October 2015 Appendix A: List of Tables Table 1. CBB Model Numbers ..................... 1 Table 2. Actuator Weight ....................3 Table 3. Tightening Torque Center Bar (1) ................. 13 Table 4. Tightening Torque Center Bar (2) ................. 19 Table 5. -
Page 30: Appendix B: List Of Drawings
Appendix Service Instructions October 2015 VA001-196-30 Rev. 1 Appendix B: List of Drawings B�1 Part No� VA001-005-72-4, CBBXXX Assembly Drawing Appendix... - Page 31 Service Instructions Appendix VA001-196-30 Rev. 1 October 2015 B�2 Part No� VA001-005-73-3, CBBXXX-M3HW Assembly Drawing Appendix...
- Page 33 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.