Emerson Bettis G Series User Manual

Installation, Operation and Maintenance Manual
VA-DC-000-1878 Rev. 0
Table of Contents
December 2020
iTable of Contents
Table of Contents
Section 1: Introduction
1.1 General Service Information .......................................................................... 1
1.2 Denitions .................................................................................................... 2
1.3 General Safety Information ........................................................................... 2
1.4 Bettis Reference Materials ............................................................................. 3
1.5 Service Support Items ................................................................................... 3
1.6 Lubrication and Fluid Requirements .............................................................. 3
1.7 General Tool Information .............................................................................. 4
1.8 Actuator Storage ........................................................................................... 4
1.9 Actuator Installation ..................................................................................... 4
1.10 Actuator Start-Up .......................................................................................... 5
1.11 Actuator Operation ....................................................................................... 6
Section 2: Actuator Disassembly
2.1 General Disassembly ..................................................................................... 7
2.2 Pneumatic Power Module Disassembly ......................................................... 8
2.3 Drive Module Disassembly .......................................................................... 10
2.4 G01 through G5 M18 Hydraulic Override Cylinder Disassembly ................... 13
2.5 G7 through G10 M18 Hydraulic Override Cylinder Disassembly ................... 13
2.6 M18 Pump Disassembly .............................................................................. 14
2.7 M18 Reservoir Disassembly ......................................................................... 15
Section 3: Actuator Reassembly
3.1 General Reassembly .................................................................................... 16
3.2 Drive Module Reassembly ........................................................................... 16
3.3 Pneumatic Power Module Reassembly ........................................................ 21
3.4 G2 and G3 Early Model Pneumatic Power Module Reassembly..................... 24
3.5 G01 through G5 M18 Hydraulic Override Cylinder Reassembly .................... 27
3.6 G7 through G10 M18 Hydraulic Override Cylinder Reassembly .................... 28
3.7 Actuator Testing ......................................................................................... 29
Section 4: Field Conversions
4.1 Fail Mode Reversal (CW to CCW, or CCW to CW) ......................................... 31
4.2 Converting Double-Acting Actuator to Spring-Return with
Override Cylinder Assembly ......................................................................... 31
Section 5: Module Removal and Installation
5.1 M18 Override Cylinder Removal .................................................................. 32
5.2 M18 Override Cylinder Installation .............................................................. 33
5.3 Spring Module Removal .............................................................................. 34
5.4 Spring Module Installation .......................................................................... 35
5.5 Pneumatic Power Module Removal ............................................................. 38

Emerson Bettis G Series Specifications

General

Brand	Emerson
Model	Bettis G Series
Category	Controller
Language	English