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Control Unit
AGVB
Azbil AGVB User Manual
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Diaphragm plate
stopper
Eyebolt
Air pipe connection port / air vent hole
(upper and lower diaphragm cases)
Figur
e 6-8. Direct action (PSA2D)
Diaphragm plate
Air vent hole
(upper diaphragm case)
Eyebolt
Air pipe connection por
t
(lower diaphrag
m case)
Figur
e 6-9. Direct action (PSA3D)
Diaphragm plate
Air pipe connection por
t
(upper diaphragm case)
Eyebolt
Air vent hole
(lower diaphrag
m case)
Figur
e 6-10. Direct action (PSA4D)
6-8
55
57
Table of Contents
Default Chapter
15
Table of Contents
15
Chapter 1. Structure of the Control System
17
Introduction
17
Control Valve Structure
18
Specifications of the Control Valve
19
Dimensions and Weight
19
Chapter 2. Installation
21
Installation Location
21
Check before Installation on the Pipe
24
Installation on the Pipe
25
Standard Installation Example
25
Installation Method
25
Air Supply Connection
26
Inspection after Installation and Precautions for Operation
26
Chapter 3. Operation
27
Trial-Run Inspection and Adjustment
27
Use of the Side Handwheel
27
Troubleshooting
28
Chapter 4. Maintenance
31
Inspection of the Control Valve
31
Daily Inspection
31
Periodic Inspection
33
Removing the Control Valve
34
Chapter 5. Disassembly and Reassembly of the Control Valve
37
Before Disassembly
37
Necessary Tools
37
Removal of the Actuator from the Valve Body and Reassembly, and Changing the Orientation of the Actuator
37
Removal of the Actuator from the Valve Body and Reassembly
37
Procedure for Changing the Mounting Orientation of the Actuator
38
Disassembling the Valve Body
40
Reassembling the Valve Body
44
Chapter 6. Disassembly and Reassembly of Model PSA Actuator
49
Disassembly of the Actuator
49
Reassembly of Model PSA Actuator
54
Mounting the Actuator on the Valve Body
60
Removing the Side Handwheel from the Actuator
61
Disassembly of the Side Handwheel
63
Assembly of the Side Handwheel
63
Mounting the Side Handwheel on the PSA Actuator
64
Piston Cylinder Actuator
65
Chapter 7 .Disassembly and Reassembly of Model PSA6 Spring Type
65
Overview
65
Auto/Manual Switching Method
67
Disassembly and Reassembly of the Actuator
69
Disassembly of the Actuator
69
Disassembly of the Spring Unit
73
Reassembly of the Actuator
74
Main Parts to be Replaced
76
Chapter 8. Low-Emission Gland Packing System
77
Overview
77
Structure
77
Assembling the Parts of the Gland
78
Preparation for Assembly
78
Assembly
79
Retightening
81
Chapter 9 .ISO 15848-1 Certified Low-Emission Gland Packing System
83
Overview
83
Structure
84
Starting Operation
84
Assembling the Parts of the Gland
84
Preparation for Assembly
84
Assembly
85
Application to Existing Control Valves
89
Chapter 10. Maintenance Information
91
Chapter 11. Disposal
93
Appendix A. Standard Specifications
95
Appendix B. Dimensions and Weight
97
Appendix C. Main Parts to be Replaced
99
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Azbil AGVB Specifications
General
Brand
Azbil
Model
AGVB
Category
Control Unit
Language
English
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