Emerson Bettis G Series Service Instructions Manual
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Emerson Bettis G Series Service Instructions Manual

Emerson Bettis G Series Service Instructions Manual

Pneumatic actuators
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Service Instructions
124840E Rev. 3
April 2024
Bettis G/GC/GH/GHC Series
Pneumatic Actuators
Disassembly and Reassembly

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  • Page 1 Service Instructions 124840E Rev. 3 April 2024 Bettis G/GC/GH/GHC Series Pneumatic Actuators Disassembly and Reassembly...
  • Page 2 Notes Service Instructions 124840E Rev. 3 April 2024 This page is intentionally left blank.

  • Page 3: Table Of Contents

    Service Instructions Table of Contents 124840E Rev. 3 April 2024 Table of Contents Section 1: Introduction General Service Information ................1 Definitions ........................2 General Safety Information ..................2 Bettis Reference Materials ..................3 Service Support Items ..................3 Operating Media .....................4 Lubrication Requirements ...................4 General Tool Information ..................4 Actuator Storage .....................5 1.10...
  • Page 4 Table of Contents Service Instructions 124840E Rev. 3 April 2024 Section 4: Field Conversions Fail Mode Reversal (CW to CCW or CCW to CW) for G and GH Only ..37 Converting Double-Acting Actuator to Spring-Return ........ 37 Converting Spring-Return Actuator to Double-Acting ........ 37 Add an M3 Jackscrew to Blind End Cap Module ...........
  • Page 5 Service Instructions Table of Contents 124840E Rev. 3 April 2024 Section 7: Troubleshooting Fault Insertion ...................... 59 Operational Test ....................60 Section 8: Removal and Decommissioning Removal and Decommissioning ............... 61 Section 9: Document Revision Document Revision ......................62 Appendix A: List of Tables List of Tables ........................
  • Page 6 Notes Service Instructions 124840E Rev. 3 April 2024 This page is intentionally left blank.

  • Page 7: Section 1: Introduction

    Service Instructions Section 1: Introduction 124840E Rev. 3 April 2024 Section 1: Introduction General Service Information • This service procedure is offered as a guide to enable general maintenance to be performed on Bettis™ G/GC01XXX, G/GC2XXX, G/GC3XXX, G/GC4XXX, G/GC5XXX, G/GC7XXX, G/GC8XXX, G/GC10XXX, G13XXX, and GH/GHC2XXX, GH/GHC3XXX, GH/GHC4XXX, GH/GHC5XXX, GH/GHC7XXX, GH/GHC8XXX Spring-Return (SR) Series Single Power Module Pneumatic Actuators.

  • Page 8: Definitions

    Section 1: Introduction Service Instructions 124840E Rev. 3 April 2024 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 are provided to assist maintenance personnel to carry out maintenance procedures.

  • Page 9: Bettis Reference Materials

    Assembly Drawing for GH/GHC 2 through 10, Spring-Return One Power Module Pneumatic Series Actuators: use part number 140952. NOTE: If you require a specific assembly drawing (IE: GXX-M3 OR HYD), please contact Emerson Actuation Technologies by phone or email at info.actuationtechnologies@emerson.com. Service Support Items •...

  • Page 10: Operating Media

    Operating Media • Recommended to use clean, dry air or inert gas. • Other gases may be used with direction from Emerson Engineering to evaluate any possible restrictions or modifications which may need to be made for compatibility. Lubrication Requirements...

  • Page 11: Actuator Storage

    Service Instructions Section 1: Introduction 124840E Rev. 3 April 2024 Actuator Storage For applications where the actuator is not placed into immediate service, it is recommended that the actuator be cycled with regulated clean/dry pneumatic pressure at least once per month. Indoor storage, if available, is recommended for all actuators.

  • Page 12: Actuator Operation

    Section 1: Introduction Service Instructions 124840E Rev. 3 April 2024 1.10.2 Check connections Pneumatic/hydraulic components connected as per schematic enclosed or in service manual supplied. Pneumatic supply connected to the identified ports. Electrical connection terminals are secured. Wiring as per enclosed diagram or service manual supplied. NOTE: When actuator is first placed into service, it should be cycled with regulated pneumatic pressure.

  • Page 13: Section 2: Actuator Disassembly

    Service Instructions Section 2: Actuator Disassembly 124840E Rev. 3 April 2024 Section 2: Actuator Disassembly General Disassembly WARNING 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 14: Pneumatic Power Module Disassembly

    Section 2: Actuator Disassembly Service Instructions 124840E Rev. 3 April 2024 Pneumatic Power Module Disassembly NOTE: Review Section 2.1 - General Disassembly before proceeding with Pneumatic Power Module Disassembly. NOTE: If the actuator model is a GXX2XX Series (two same size power modules with one module mounted on each side of the drive module) then do the following steps on both power modules simultaneously, or complete one power module and then repeat Section 2.2 on the second power module.
  • Page 15 Service Instructions Section 2: Actuator Disassembly 124840E Rev. 3 April 2024 2.2.4 Outer end cap (3-80) removal as follows: 2.2.4.1 G/GC01 through G/GC10, G13, and GH/GHC2 through GH/GHC10 standard end cap (3-80) removal. Continue at step 2.2.5. 2.2.4.2 G/GC01-M3 jackscrew disassembly from outer end cap (3-80) 2.2.4.2.1 Remove M3 handwheel or M3 hex drive hub from M3 (3-290) per Section 2.5.
  • Page 16 Section 2: Actuator Disassembly Service Instructions 124840E Rev. 3 April 2024 CAUTION Do not use pipe wrench to remove tie bars. 2.2.8 Tie bar removal: NOTE: G/GC01, G/GC/GH/GHC2 and G/GC/GH/GHC3 models have flats on outboard end of tie bars (3-20) for wrench placement. 2.2.8.1 Remove G/GC01, G/GC/GH/GHC2 and G/GC/GH/GHC3 tie bars (3-2) as follows:...

  • Page 17: Drive Module Disassembly

    Service Instructions Section 2: Actuator Disassembly 124840E Rev. 3 April 2024 NOTE: Steps 2.2.10 is used only on early G2 and G3 models equipped with outboard and inboard tie bar nuts. 2.2.10 Remove early model G2 and G3 pistons as follows: 2.2.10.1 Refer to assembly drawing sheet 2 of 2 Detail “D”...
  • Page 18 Section 2: Actuator Disassembly Service Instructions 124840E Rev. 3 April 2024 NOTE: If the actuator is equipped with submerged stop screws with stop screw covers (1-195) then proceed to and complete steps 2.3.2.1 and 2.3.2.2 prior to doing step 2.3.2. 2.3.2 Mark stop screws (1-180) left and right.
  • Page 19 Service Instructions Section 2: Actuator Disassembly 124840E Rev. 3 April 2024 2.3.11 Remove hex cap screws (1-120), with lockwashers (1-115), from housing cover (1-20). 2.3.12 Using hex cap screws (1-110), install into holes vacated by hex cap screws (1-120). Use these hex cap screws to jack the housing cover up for removal.

  • Page 20: Blind End Cap Module Removal

    Section 2: Actuator Disassembly Service Instructions 124840E Rev. 3 April 2024 2.3.24 Remove extension rod assembly (1-50) from guide block (1-30). On spring-return actuators also remove rod extension assembly (9-50). NOTE: On G/GC models only (not GH/GHC), one spherical washer (1-40) will be removed from guide block (1-30) when extension rod assembly is removed.

  • Page 21: M3 Jackscrew Disassembly

    Service Instructions Section 2: Actuator Disassembly 124840E Rev. 3 April 2024 M3 Jackscrew Disassembly NOTE: The jackscrew bearing retainer (7-110)/(5-110), needle bearing thrust washer assembly (7-100)/(5-100) or retainer ring (7-90)/(5-90) does not require disassembly from the jackscrew assembly (7-40)/(5-50) except for the need to replace worn parts. For disassembly of these items refer to step 2.6.7.

  • Page 22: Extended Stop Blind End Cap Disassembly

    Section 2: Actuator Disassembly Service Instructions 124840E Rev. 3 April 2024 2.6.3.2 Unscrew and remove hex flat nut (7-50) from M3 jackscrew assembly (7-40). 2.6.3.3 Remove retainer ring (7-55) from M3 adapter (7-45). 2.6.3.4 Remove M3 jackscrew assembly (7-40) from M3-SR adapter plate (7-10).

  • Page 23: Section 3: Actuator Reassembly

    Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 Section 3: Actuator Reassembly General Reassembly CAUTION Only new seals, which are still within the seal’s 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 24 Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 3.2.1 If guide bar bearing (2-20) is being replaced install new bearing into guide block (1-30). NOTE: The guide bar bearing (2-20) must be pressed into guide block guide bar bore with the seam located ±5°...
  • Page 25 3.2.15 Install and tighten rod extension retainer nut assembly (5-80) over guide block stop plug (5-50) and screw into guide block (1-30). NOTE: Consult Emerson Actuation Technologies for yoke bearing, yoke pin bearing or yoke/guide block bushing installation information. Actuator Reassembly...
  • Page 26 Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 3.2.16 If the two yoke bearings (2-40) are being replaced, install new bearing into housing cover (1-20) and housing (1-10). NOTE: The yoke bearing (2-40) must be pressed into housing (1-10) and housing cover (1-20). Install the yoke bearings with the bearing seam located 45°...
  • Page 27 Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 NOTE: Refer to Section 2, step 2.3.7 for correct installation position. 3.2.27 Install O-ring (2-50) into housing cover (1-20). 3.2.28 Install O-ring seal (2-60) into housing cover (1-20). 3.2.29 Install housing cover (1-20), being careful not to damage O-ring seals (2-50) and (2-60).
  • Page 28 Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 3.2.33 On G/GC/GH/GHC5, 7, 8, 10, and G13 models 3.2.33.1 Place lockwashers (1-115) onto hex cap screws (1-120). NOTE: Hex cap screw (1-120) are only used as “hole” fillers and to protect threads from environment.

  • Page 29: Pneumatic Power Module Reassembly

    Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 Pneumatic Power Module Reassembly NOTE: For early model G2 and G3 actuators with double nuts on the power module, use Section 3.4 for reassembly. Refer to Section 2, step 2.1.3 for the correct installation location for piston rod (3-40). The actuator must be in the appropriate overtravel position.
  • Page 30 Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 3.3.3 Torque tighten piston rod (3-40) to the lubricated torque as listed in the following table. Table 4. Piston Rod Required Torque Table Torque Torque (±5 Percent) (±5 Percent) Housing Model Housing Model G/GC/GH/GHC...
  • Page 31 Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 NOTE: The T-seal is composed of one rubber seal and two split skive-cut back-up rings. 3.3.12.1 Install two sets of rod T-seals (4-50) into the internal diameter seal grooves of piston (3-30). 3.3.12.2 Install a back-up ring on each side of the T-seal.
  • Page 32 Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 NOTE: The outer end cap (3-80) pressure inlet port should be positioned in the same position as recorded in Section 2.2, step 2.2.1. 3.3.23.1 G01-M3 OUTER END CAP INSTALLATION 3.3.23.1.1 Apply a light coating of lubricant to threads of jackscrew (3-290).
  • Page 33 Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 NOTE: The small round end of the M3 adapter will install on the jackscrew pointing to the inboard end of the jackscrew. 3.3.23.2.5 Position the jackscrew with the inboard end of the jackscrew located with the needle bearing thrust washer assembly (3-340) up against or near the jackscrew adapter (3-280).

  • Page 34: G2 And G3 Early Model Pneumatic Power Module Reassembly

    Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 3.3.25 Install lockwashers (3-140) onto socket cap screws (3-130). 3.3.26 Install and tighten socket cap screws (3-130), with lockwashers (3-140), into outer end cap (3-80). NOTE: If the outer end cap (3-80) has an ES stop screw completed steps 3.3.26 through 3.3.29.
  • Page 35 Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 3.4.1 Refer to assembly drawing sheet 2 of 2 Detail “C” in Appendix B. Install one rod wiper (4-10) into inner end cap (3-10). 3.4.2 Install one rod bushing (4-20) into inner end cap (3-10). 3.4.3 Coat one PolyPak seal (4-30) with lubricant and install, lip first, into inner end cap (3-10).
  • Page 36 Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 3.4.8 Refer to assembly drawing sheet 2 of 2 Detail “D” in Appendix B. Install O-ring seal (4-70) into the seal groove in the outboard end of piston rod (3-40). 3.4.9 Install two split ring halves (3-50) into the outer most groove in piston rod (3-40) and retain by installing the recessed area of piston (3-30) over the...

  • Page 37: Blind End Cap Module Reassembly

    Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 3.4.18 Install outer end cap (3-80) over tie bars (3-20) and into cylinder (3-70). NOTE: The pressure inlet port should be positioned in the same position as recorded in Section 2.2, step 2.2.1.

  • Page 38: M3 Jackscrew Reassembly

    Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 M3 Jackscrew Reassembly NOTE: This section is to be completed when the M3 jackscrew has been disassembled from the blind end cap or from the SR-M3 adapter plate (7-10). If the thrust bearing assembly has been disassembled from the M3 jackscrew stud, then preassemble the thrust bearing assembly to the M3 jackscrew stud as per Section 3.6.5.
  • Page 39 Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 NOTE: The small round end of the M3 adapter will install on the M3 assembly pointing to the inboard end of the M3 assembly. 3.6.2.5 Position the M3 assembly with the inboard end of the M3 located with the needle bearing thrust washer assembly (5-100) up against or near the M3 adapter (5-45).

  • Page 40: M3 Handwheel Or M3 Hex Drive Hub Installation

    Section 3: Actuator Reassembly Service Instructions 124840E Rev. 3 April 2024 3.6.5 M3 Thrust Bearing reassembly to Jackscrew assembly 3.6.5.1 Apply a coating of lubricant to the internal hole located on the inboard end of M3 assembly (5-40)/(7-50). 3.6.5.2 Install the wire retainer ring (5-90)/(7-90) into the internal hole of M3 assembly until retainer ring opens up into its groove inside the M3 assembly.

  • Page 41: Extended Stop Blind End Cap Reassembly

    Service Instructions Section 3: Actuator Reassembly 124840E Rev. 3 April 2024 CAUTION When aligning the slot and the cross drilled hole, make certain that the back of the slot is at least one thread from being aligned with the hole. 3.7.2.2 Insert the spiral pin through the slotted nut and through the jackscrew stud making sure that equal amounts of the spiral pin is...
  • Page 42 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. Actuator Reassembly...

  • Page 43: Section 4: Field Conversions

    Service Instructions Section 4: Field Conversions 124840E Rev. 3 April 2024 Section 4: Field Conversions Fail Mode Reversal (CW to CCW, or CCW to CW) for G and GH Only NOTE: GC/GHC actuators must not undergo fail mode reversal without specific knowledge and acceptance of the resulting torque output.

  • Page 44: Add An M3 Jackscrew To Blind End Cap Module

    Section 4: Field Conversions Service Instructions 124840E Rev. 3 April 2024 NOTE: Skip step 4.3.3 when working on G01-SR models and continue at step 4.3.4. 4.3.3 Remove the spring cartridge Powr-Swivl module per Section 5.5. 4.3.4 Install the blind end cap module per Section 3.5. Add an M3 Jackscrew to Blind End Cap Module 4.4.1...

  • Page 45: Add An Extended Stop (Es) To Power Module Outer End Cap

    Service Instructions Section 4: Field Conversions 124840E Rev. 3 April 2024 Add an Extended Stop (ES) to Power Module Outer End Cap 4.8.1 Remove outer end cap per Section 2.2, steps 2.2.5 and 2.2.6. 4.8.2 If new ES outer end cap is not pre-assembled with the ES then assembly ES to the end cap per Section 3.8.

  • Page 46: Section 5: Module Removal And Installation

    Section 5: Module Removal and Installation Service Instructions 124840E Rev. 3 April 2024 Section 5: Module Removal and Installation NOTE: When the spring module is to be removed, it should be removed from the drive module prior to the pneumatic power module removal or disassembly. WARNING Do not remove spring module while spring is compressed.
  • Page 47 Service Instructions Section 5: Module Removal and Installation 124840E Rev. 3 April 2024 WARNING If an M3, M3HW jackscrew or extended stop (ES) is mounted in the spring module cover plate (7-10), the M3, M3HW or ES should not contact the end of the spring module tension rod.

  • Page 48: Spring Module Installation

    Section 5: Module Removal and Installation Service Instructions 124840E Rev. 3 April 2024 5.1.11 Unscrew the spring cartridge tension rod from the drive module. The tension rod can be rotated for removal by going through the open end of spring cartridge assembly with a square male drive extension.
  • Page 49 Service Instructions Section 5: Module Removal and Installation 124840E Rev. 3 April 2024 WARNING Complete step 5.2.5 to avoid severe injury to personnel or incur major damage to the actuator. 5.2.5 Spring cartridge tension rod to rod extension installation 5.2.5.1 Using a male square drive extension, go through the open end of spring odule (5-10) and rotate the tension rod nut until initial thread engagement is achieved.
  • Page 50 Section 5: Module Removal and Installation Service Instructions 124840E Rev. 3 April 2024 WARNING When screwing tension rod into extension rod assembly (9-50) make certain that the tension rod and extension rod assembly threads do not cross-thread. 5.2.6 Torque tighten the spring cartridge tension rod as listed in the following table. Table 8.
  • Page 51 Service Instructions Section 5: Module Removal and Installation 124840E Rev. 3 April 2024 Table 9. Hex Cap Screws (7-20) Torque Table Torque Torque (±5 Percent) (±5 Percent) Housing Model Housing Model G/GC/GH/GHC G/GC/GH/GHC lbf-ft lbf-ft 5.2.15 On M3, M3HW and ES models install Monel wire (6-130) through each hex cap screw (7-20) per the following steps: NOTE: The following steps provide guidelines for wire locking hex cap screws to discourage...
  • Page 52 Section 5: Module Removal and Installation Service Instructions 124840E Rev. 3 April 2024 5.2.15.3 Twist the end of both wires together and insert one through the drilled hole in the hex cap screw head. Pass the second wire over the screw head and twist it three (3) times around the first wire at a location where the first wire exits the screw head.

  • Page 53: Pneumatic Power Module Removal

    Service Instructions Section 5: Module Removal and Installation 124840E Rev. 3 April 2024 Pneumatic Power Module Removal CAUTION Due to the weight and size of spring module, heavy duty support equipment will be required when installing spring cartridge module to the actuator housing. For the approximate weight of the spring cartridge refer to Section 6.

  • Page 54: Pneumatic Power Module Installation

    Section 5: Module Removal and Installation Service Instructions 124840E Rev. 3 April 2024 Pneumatic Power Module Installation 5.4.1 Check to verify that O-ring seal (4-90) is properly seated in its seal groove located on the housing side of inner end cap (3-10). NOTE: G2 and G3 models (older models) confirm that the two inboard hex nuts (3-90) flats are aligned to fit into the slot located in the end of housing (1-10).
  • Page 55 Service Instructions Section 5: Module Removal and Installation 124840E Rev. 3 April 2024 CAUTION When screwing piston rod into the G2 through G13, extension rod assembly (1-50) and G/GC/GH/GHC piston rod into guide block (1-30) or G01 guide block (1-30), make certain that the piston rod and extension rod assembly/guide block threads do not cross-thread.

  • Page 56: G2 Thru G13 Powr-Swivl Removal (Excludes Gh/Ghc Model Actuators)

    Section 5: Module Removal and Installation Service Instructions 124840E Rev. 3 April 2024 G2 Thru G13 Powr-Swivl Removal (Excludes GH/GHC Model Actuators) CAUTION While step 5.5.1 is in progress, be sure to maintain guide bar retention when moving the guide block. 5.5.1 Push the guide block to the side of housing (1-10) that will expose the extension rod assembly (1-50).

  • Page 57: G2 Thru G13 Powr-Swivl Module Installation (Excludes Gh/Ghc Model Actuators)

    Service Instructions Section 5: Module Removal and Installation 124840E Rev. 3 April 2024 G2 Thru G13 Powr-Swivl Module Installation (Excludes GH/GHC Model Actuators) WARNING The actuator must be in the appropriate overtravel position. Confirm overtravel position by observing the guide block (1-30) is against the inner wall of housing (1-10). CAUTION While step 5.6.1 is in progress, be sure to maintain guide bar retention when moving the guide block.

  • Page 58: Section 6: Actuator Support Information

    Section 6: Actuator Support Information Service Instructions 124840E Rev. 3 April 2024 Section 6: Actuator Support Information G/GC/GH/GHC Module Weights by Item Number and Actuator Housing Size Table 13. G/GC/GH/GHC Module Weights by Item Number and Actuator Housing Size (1) Item Module Weight...

  • Page 59: G01 Tool Style And Wrench Size

    Service Instructions Section 6: Actuator Support Information 124840E Rev. 3 April 2024 Table 14. G/GC/GH/GHC Module Weights by Item Number and Actuator Housing Size (2) Item Module Number Weight Weight Weight Weight Weight Weight Weight Weight Weight Description 2410 3085 4095 8060 Spring Module...

  • Page 60: G/Gc2 Tool Style And Wrench Size

    Section 6: Actuator Support Information Service Instructions 124840E Rev. 3 April 2024 G/GC2 Tool Style and Wrench Size Table 16. G/GC2 Tool Style and Wrench Size Item Item Wrench Size Location or Description Recommended Tool Style Number Quantity 1-110 9/16 in. Hex Cap Screws Socket 1-160...

  • Page 61: G/Gc4 Tool Style And Wrench Size Gh3/Ghc3 For Item Number 3-20 To 3-130

    Service Instructions Section 6: Actuator Support Information 124840E Rev. 3 April 2024 G/GC4 Tool Style and Wrench Size GH3/GHC3 for Item Number 3-20 to 3-130 Table 18. G/GC4 Tool Style and Wrench Size GH3/GHC3 for Item Number 3-20 to 3-130 Item Item Wrench Size...

  • Page 62: G/Gc7 Tool Style And Wrench Size Gh5/Ghc5 For Item Number 3-20 To 3-130

    Section 6: Actuator Support Information Service Instructions 124840E Rev. 3 April 2024 G/GC7 Tool Style and Wrench Size GH5/GHC5 for Item Number 3-20 to 3-130 Table 20. G/GC7 Tool Style and Wrench Size GH5/GHC5 for Item Number 3-20 to 3-130 Item Item Wrench Size...

  • Page 63: G/Gc10 Tool Style And Wrench Size Gh8/Ghc8 For Item Number 3-20 To 3-130

    Service Instructions Section 6: Actuator Support Information 124840E Rev. 3 April 2024 G/GC10 Tool Style and Wrench Size GH8/GHC8 for Item Number 3-20 to 3-130 Table 22. G/GC10 Tool Style and Wrench Size GH8/GHC8 for Item Number 3-20 to 3-13 Item Item Wrench Size...

  • Page 64: G/Gc/Gh/Ghc Module Assemble Ratchet Extension Size

    Section 6: Actuator Support Information Service Instructions 124840E Rev. 3 April 2024 6.11 G/GC/GH/GHC Module Assemble Ratchet Extension Size The minimum ratchet extension length required for each G body size to assemble Power Modules and Spring Modules to Drive Modules is shown in the following table. Table 24.

  • Page 65: Section 7: 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’s Bettis actuators as possible. Reference to equipment not supplied should be ignored.

  • Page 66: Operational Test

    Section 7: Troubleshooting Service Instructions 124840E Rev. 3 April 2024 Operational Test 7.2.1 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. 7.2.1.1 Procedure 7.2.1.1.1...

  • Page 67: Section 8: 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 a customer’s authorized representative and an authorized Emerson Actuation Technologies representative. CAUTION Make sure actuator is isolated before removing from valve.

  • Page 68: Section 9: Document Revision

    M. Christopherson SY804 November 2021 UPDATED T. Zhang Editorial Update November 2023 UPDATED T. Zhang SY1214 March 2024 UPDATED Sanket Yewale SY 1214 April 2024 UPDATED Sanket Yewale Note: * Signatures on files at Emerson Actuation Technologies, Houston, Texas Document Revision...

  • Page 69: Appendix A: List Of Tables

    Service Instructions Appendix 124840E Rev. 3 April 2024 Appendix A: List of Tables Table 1. Rod Extension Retainer Nut Tool Part Number .............4 Table 2. Housing Cover Screw Quantity and Torque Table ............. 21 Table 3. Piston Rod Number of Turns Table ................23 Table 4.

  • Page 70: Appendix B: List Of Drawings

    Appendix Service Instructions 124840E Rev. 3 April 2024 Appendix B: List of Drawings Part Number 116422, GXXXX Pneumatic Assembly Drawing, Sheet 1 of 2 Appendix...

  • Page 71: Part Number 116422, Gxxxx Pneumatic Assembly Drawing, Sheet 2 Of 2

    Service Instructions Appendix 124840E Rev. 3 April 2024 Part Number 116422, GXXXX Pneumatic Assembly Drawing, Sheet 2 of 2 Appendix...

  • Page 72: Part Number 115678, Gxx2Xx Pneumatic Assembly Drawing, Sheet 1 Of 2

    Appendix Service Instructions 124840E Rev. 3 April 2024 Part Number 115678, GXX2XX Pneumatic Assembly Drawing, Sheet 1 of 2 Appendix...

  • Page 73: Part Number 115678, Gxx2Xx Pneumatic Assembly Drawing, Sheet 2 Of 2

    Service Instructions Appendix 124840E Rev. 3 April 2024 Part Number 115678, GXX2XX Pneumatic Assembly Drawing, Sheet 2 of 2 Appendix...

  • Page 74: Part Number 115674, Gxxxx-Srx

    Appendix Service Instructions 124840E Rev. 3 April 2024 Part Number 115674, GXXXX-SRX Pneumatic Assembly Drawing, Sheet 1 of 2 Appendix...

  • Page 75: Part Number 115674, Gxxxx-Srx

    Service Instructions Appendix 124840E Rev. 3 April 2024 Part Number 115674, GXXXX-SRX Pneumatic Assembly Drawing, Sheet 2 of 2 Appendix...

  • Page 76: Part Number 140952, Gh/Ghcxxxx-Srx

    Appendix Service Instructions 124840E Rev. 3 April 2024 Part Number 140952, GH/GHCXXXX-SRX Pneumatic Assembly Drawing, Sheet 1 of 2 Appendix...

  • Page 77: Part Number 140952, Gh/Ghcxxxx-Srx

    Service Instructions Appendix 124840E Rev. 3 April 2024 Part Number 140952, GH/GHCXXXX-SRX Pneumatic Assembly Drawing, Sheet 2 of 2 Appendix...

  • Page 78: Appendix C: Safety Instructions For Use In

    Appendix Service Instructions 124840E Rev. 3 April 2024 Appendix C: Safety Instructions for Use in (Potential) Explosive Atmosphere Intended Use The actuator series have been designed to comply with the explosion safety requirements in the Ex-standards EN IEC 60079-0:2018, EN ISO 80079-36, EN ISO 80079-37:2016 and EN 1127-1:2019.

  • Page 79: Safety Instructions

    124840E Rev. 3 April 2024 Safety Instructions Before the installation, please carefully read the service instructions. Emerson is not responsible for damages caused by operations not complying with the instruction in such manuals. All the operations shall be done by a trained and qualified operator. All maintenance operations must be performed in accordance with the instructions detailed in the maintenance manual.

  • Page 80: Maximum Temperatures

    EPL and range of temperature. It is forbidden to use this equipment in a different way if it is not included in the instruction manual. Emerson is not responsible for damages caused by an improper and/or dangerous use. Maximum Temperatures WARNING The actuator’s surface temperature is dependent upon process operating...
  • Page 81 Service Instructions Notes 124840E Rev. 3 April 2024 This page intentionally left blank.
  • Page 82 VCIOM-13493-EN (PC-17270) © 1998, 2024 Emerson. All rights reserved. The Emerson logo is a trademark and service mark of Emerson Electric Co. Bettis is a mark of one of the Emerson family of companies. All other marks are property of their respective owners.

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