Fisher 4000 User Manual

D102585X012
Type 4000 Valve Positioners
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Positioner Mounting 3. . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Connections 4. . . . . . . . . . . . . . . . . . . . . . . .
Supply Connection 4. . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Connection 6. . . . . . . . . . . . . . . . . . . . . . .
Vent 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Information 6. . . . . . . . . . . . . . . . . . .
Front Cover and Indicator Cover 6. . . . . . . . . . . . . . .
Cam Adjustment 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indicator Adjustment 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pre-calibration 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Zero and Span Adjustment 8. . . . . . . . . . . . . . . . . . .
Principle of Operation 8. . . . . . . . . . . . . . . . . . .
Maintenance 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Pilot valve 9. . . . . . . . . . . . . . . . . . . . . .
Replacing the Diaphragm 10. . . . . . . . . . . . . . . . . . .
Replacing Gauges 10. . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Positioner 10. . . . . . . . . . . . . . . . . . . .
Replacing the Positioner 10. . . . . . . . . . . . . . . . . . . .
Parts Ordering 11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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

Fisher 4000 Specifications

General

Brand	Fisher
Model	4000
Category	Valve Positioners
Language	English

Summary

Introduction to Type 4000 Valve Positioner

Scope of Manual

Overview of the manual's content covering installation, operation, calibration, maintenance, and parts.

Description of Type 4000 Positioner

Details the Type 4000 pneumatic valve positioner and its application with System 9000 actuators.

Type 4000 Positioner Specifications

Lists key technical specifications for the Type 4000 valve positioner, including performance and limits.

Installation Procedures

Positioner Mounting

Step-by-step guide for physically mounting the positioner onto the actuator assembly.

Pressure Connections

Details the size and type of NPT fittings for all pressure connections on the positioner.

Supply Connection

Emphasizes the requirement for clean, dry, oil-free air or non-corrosive gas for safe operation.

Instrument Connection

Instructions for connecting the control device output to the positioner's input port.

Vent Connection

Information regarding the positioner exhaust and venting capabilities.

Operating Information and Calibration

Front Cover and Indicator Cover

Explains the design and function of the front and indicator covers for sealing and drainage.

Cam Adjustment

Instructions for adjusting the cam lobes to match actuator travel and failure mode settings.

Indicator Adjustment

Procedure for positioning the indicator pointer correctly on the adjustment screw.

Pre-calibration Steps

Steps to ensure correct initial setup and component positioning before calibration procedures.

Zero and Span Adjustment

Detailed process for setting the zero and span points for accurate valve positioning.

Principle of Operation

Maintenance and Troubleshooting

Troubleshooting Common Issues

Guidance for diagnosing and resolving common operational issues with the positioner.

Replacing the Pilot Valve

Steps for removing, cleaning, and reinstalling the pilot valve assembly for repair.

Replacing the Diaphragm

Instructions for replacing the diaphragm and associated washers for maintenance.

Replacing Gauges

Procedure for removing and installing new pressure gauges on the positioner.

Removing the Positioner

Steps to safely disconnect and detach the positioner from the actuator assembly.

Replacing the Positioner Unit

Outlines the process for installing a new positioner and performing calibration.

Parts Ordering Information

Type 4000 Positioner Parts List

Comprehensive list of replacement parts with their corresponding part numbers for ordering.