D102585X012
Type 4000 Valve Positioners
Contents
Introduction
1
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Scope of Manual
1
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Description
2
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Specifications
2
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Installation
2
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Positioner Mounting
3
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Pressure Connections
4
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Supply Connection
4
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Instrument Connection
6
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Vent
6
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Operating Information
6
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Front Cover and Indicator Cover
6
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Cam Adjustment
7
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Indicator Adjustment
7
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Calibration
7
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Pre-calibration
7
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Zero and Span Adjustment
8
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Principle of Operation
8
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Maintenance
9
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Troubleshooting
9
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Replacing the Pilot valve
9
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Replacing the Diaphragm
10
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Replacing Gauges
10
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Removing the Positioner
10
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Replacing the Positioner
10
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Parts Ordering
11
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Parts List
11
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Introduction
Scope of Manual
This instruction manual provides installation, operat-
ing, calibration, maintenance, and parts ordering in-
formation for the Type 4000 pneumatic valve
Figure 1. Type 4000 Positioner Installed on System 9000
Actuator
W7371 / IL
positioner. Refer to separate instruction manuals for
information on the actuator control valve and other
accessories.
Only personnel qualified through training or experience
should install, operate, or maintain these positioners. If
there are any questions concerning the instructions in
this manual, contact your Fisher Controls sales office
or sales representative before proceeding.
Instruction Manual
Form 5455
January 1999
Type 4000
