Fisher 4660 - User Manual

D200163X012
Type 4660 High-Low Pressure Pilot
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Mounting 4. . . . . . . . . . . . . . . . . . . . . . . . . .
Panel Mounting 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pipestand Mounting 4. . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Connections 4. . . . . . . . . . . . . . . . . . . . . . . .
Supply Pressure 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Process Pressure 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Pressure 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vent 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Information 7. . . . . . . . . . . . . . . . . . .
Pilots without Optional Set Point Indication 7. . . . . .
Preliminary Adjustments 7. . . . . . . . . . . . . . . . . . . . .
Setting the High Set Point 8. . . . . . . . . . . . . . . . . . . .
Setting the Low Set Point 8. . . . . . . . . . . . . . . . . . . .
Alternate Set Point Adjustment Procedure 8. . . . . .
Pilots with Optional Set Point Indication 9. . . . . . . . .
Setting the High and/or Low Set Point(s) 9. . . . . . .
Prestartup Checks 10. . . . . . . . . . . . . . . . . . . . . . . . .
Alignment of the Nozzle Beam 10. . . . . . . . . . . . . . .
Startup 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principle of Operation 11. . . . . . . . . . . . . . . . . .
Maintenance 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bourdon Tube/Flapper Assembly
Replacement 12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block-and-Bleed Relay Assembly
Replacement 12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low or High Set Point Assembly Replacement 12.
Pilots without Set Point Indication 12. . . . . . . . . . .
Pilots with Set Point Indication 13. . . . . . . . . . . . . .
Parts Ordering 13. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. Type 4660 High-Low Pressure Pilot with Relay
W4035/IL

W4034/IL


Introduction
Scope of Manual
This instruction manual provides installation, operat-
ing, maintenance, and parts ordering information for
the Type 4660 high-low pressure pilot. Refer to sepa-
rate instruction manuals for information regarding the
control valve actuator.
Only qualified personnel should install, operate, and
maintain this pilot. If there are any questions concern-
ing these instructions, contact your Fisher sales office
or sales representative before proceeding.
Instruction Manual
Form 5200
May 1999 Type 4660

Fisher 4660 Specifications