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4194A Series
Fisher 4194A Series Manuals
Manuals and User Guides for Fisher 4194A Series. We have
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Fisher 4194A Series manual available for free PDF download: Instruction Manual
Fisher 4194A Series Instruction Manual (82 pages)
Differential Pressure Controller
Brand:
Fisher
| Category:
Controller
| Size: 3 MB
Table of Contents
Table of Contents
1
1 Introduction
3
Scope of Manual
3
Description
3
Specifications
3
2 Installation
7
Controller Mounting Orientation
7
Pipestand Mounting
7
Panel Mounting
7
Wall Mounting
7
Actuator Mounting
7
Pressure Connections
7
Process Pressure Connections
7
Supply Pressure Connection
9
Remote Set Point (Suffix Letter M) Pressure Connection
9
Vent
9
3 4194A Series Proportional-Only Con-
11
Adjustments for 4194A Series Controllers
11
Manual Set Point Adjustment
11
Remote Set Point (Suffix Letter M) Adjustment
11
Proportional Band Adjustment (PB ADJ)
11
Changing Controller Action
12
Switching the Auto/Manual Station
12
Prestartup Checks for 4194A Series Controllers
12
Startup for 4194A Series Controllers
13
Calibration of 4194A Series Controllers
13
General Calibration Instructions
13
Process Indicator Zero and Span
13
Calibration
13
Remote Set Point (Suffix Letter M) Zero and Span Calibration
14
Flapper Alignment
16
Principle of Operation for 4194A Series Controller
16
Overall Operation
16
Remote Set Point (Suffix Letter M) Operation
17
Auto/Manual Station (Suffix Letter E)
17
Operation
17
Auto/Manual Station (Suffix Letter E) Operation
17
4 Series Proportional-Plus-Reset
19
Adjustments for 4194B and C Series Controllers
19
Manual Set Point Adjustment
19
Remote Set Point (Suffix Letter M) Adjustment
19
Proportional Band Adjustment (PB ADJ)
19
Changing Controller Action
20
Reset Adjustment
20
Rate Adjustment
20
Anti-Reset Windup (Suffix Letter F) Adjustment
20
Switching the Auto/Manual Station
20
Prestartup Checks for 4194B and C Series Controllers
21
Startup for 4194B and C Series Controllers
21
Calibration of 4194B and C Series Controllers
22
Process Indicator Zero and Span
22
Calibration
22
Remote Set Point (Suffix Letter M) Zero and Span Calibration
24
Flapper Alignment
24
Anti-Reset Windup Differential Relief Valve (Suffix Letter F) Calibration
26
Principle of Operation for 4194B and C Series Controllers
27
Overall Operation
27
Anti-Reset Windup (Suffix Letter F) Operation
28
Remote Set Point (Suffix Letter M)
28
Operation
28
5 Maintenance
33
Inspection and Maintenance
33
Troubleshooting
33
Replacing Common Controller Parts
33
Replacing the Process Pressure Scale
33
Replacing the Relay
37
Replacing the Case and Cover
37
Replacing the Gauges
38
Replacing the Pressure Control Block
38
Replacing the Supply Gauge, Proportional, Reset, and Reset Valve Tubing Assemblies
38
Replacing the Proportional Band Adjustment Knob, Nozzle Assembly, and Set Point Beam Assembly
38
Replacing the Flapper Assembly and Flapper Flexure Pivot Assembly
42
Replacing the Proportional or Reset Bellows
45
Replacing the Reset Restriction Valve (4194B Series)
47
Replacing the Rate/Reset Valve Assembly (4194C Series)
47
Replacing the Anti-Reset Windup (Suffix Letter F) Differential Relief Valve
48
Replacing the Anti-Reset Windup (Suffix Letter F) Relief Valve Tubing Assembly
48
Replacing the Links
49
Replacing Link 1
49
Replacing Link 2
49
Replacing Link 3
50
Replacing Link 4
50
Replacing Link 5
51
Replacing the Capsular Element Assembly
52
Replacing the Long Pivot Assembly
52
Replacing the Short Pivot Assembly
53
Replacing the Process Drive Flexure
53
Replacing the Process Tubing
54
Capsular Element Maintenance Calibration
54
Precalibration Procedures
54
Aligning the Drive Bracket Assembly
54
Setting the Travel Stops
54
Aligning the Linkage
54
Zero and Span Adjustment
55
Remote Set Point (Suffix Letter M) Maintenance
57
Replacing the Remote Set Point Assembly
57
Replacing Remote Set Point Assembly Parts
58
Replacing Pivot Assembly a (Key 114)
58
Replacing Pivot Assembly B (Key 115)
59
Replacing the Drive Flexure
59
Replacing the Remote Set Point Tubing
60
Replacing Link a
60
Replacing Link B
60
Remote Set Point (Suffix Letter M) Maintenance Calibration
60
Precalibration Procedures
60
Aligning the Flexures
60
Setting the Travel Stops
61
Aligning the Linkage
61
Remote Set Point Zero and Span Adjustment
61
Remote Set Point Linearity Adjustment
62
Auto/Manual Station (Suffix Letter E) Maintenance
62
Replacing the Auto/Manual Station
62
Replacing the Switch Body Assembly
63
Lever O-Ring, Switch Body O-Ring
63
Replacing the Loader Range Spring, Diaphragm Assembly, Ball Seat, Tubing, and Ball
64
Replacing the Loader Valve Plug and Valve Plug Spring
64
6 Parts
75
Parts Ordering
75
Parts Kits
75
Parts List
75
Abbreviations Used in the Parts List
75
Controller Common Parts
75
Process and Set Point Indicator Assembly
78
Capsular Element Assembly
78
Indicator Assembly
78
Type 83U Relay
78
Remote Set Point Assembly
79
Auto/Manual Station (Suffix Letter E)
79
Internal and External Set Point Assembly (Option)
79
Controller Mounting Parts
80
Pipestand Mounting
80
Pipestand Mounting with Regulator
80
Panel Mounting
80
Wall Mounting
80
Controller Mounting Parts for Actuator with Casing-Mounted Controller
80
Controller Mounting Parts for Actuator with Yoke-Mounted Controller
80
Regulator Mounting Parts
81
Regulator Mounting Parts for Casing-Mounted Regulator
81
Regulator Mounting Parts for Yoke-Mounted Regulator (Mounting Bracket Not Required)
81
Regulator Mounting Parts for Yoke-Mounted Regulator (with Mounting Bracket)
81
Fittings
81
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