Fisher 655 User Manual

D100305X012
Type s 6 5 5 a n d 6 55 R A ctuators
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r S elf-Operate d C ontrol
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Mounting 3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Connections 6. . . . . . . . . . . . . . . . . . . . . . . . .
Startup 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Startup for Pressure-Reducing Service 6. . . . . . . . . .
Startup for Pressure-Relief Service 6. . . . . . . . . . . . .
Adjustment for Pressure-Reducing or
Pressure-Relief Service 6. . . . . . . . . . . . . . . . . . . .
Shutdown 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Top-Mounted Handwheel 8. . . . . . . . . . . . . . . . . . . . .
Disassembly 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering 9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
Scope of Manual
This instruction manual provides installation, adjust-
ment, maintenance, and parts ordering for the Type
655 and 655R actuators and the top-mounted hand-
wheel. Refer to separate instruction manuals for in-
formation about valves and accessories used with
these actuators.
Only personnel qualified through training or experience
should install, operate, and maintain the Type 655 and
655R actuators. If you have any questions about these
instructions, contact your Fisher Controls sales office
or sales representative before proceeding.
Figure 1. T ype 655-ED Pressure-Reducing V alve
Figure 2. T ype 655 Actuator Nameplate
1F9408-E / DOC
W0466-1 / IL
Instruction Manual
Form 1292
October 1997
Type 655 and 655R

Fisher 655 Specifications

General

Manufacturer	Fisher
Category	Controller
Accuracy	±1% of span
Repeatability	±0.5% of span
Supply Pressure	20 psi (1.4 bar)
Ambient Temperature Range	-40 to 180°F (-40 to 82°C)
Mounting	Panel
Materials	Aluminum, stainless steel
Input Signal	Pneumatic, 3 to 15 psig (0.2 to 1.0 bar)
Output Signal	Pneumatic, 3 to 15 psig (0.2 to 1.0 bar)

Summary

Introduction to Type 655 and 655R Actuators

Scope of Manual

Describes installation, adjustment, maintenance, and parts ordering for actuators and handwheel.

Actuator Description

Explains the Type 655 and 655R actuators for self-operated control.

Actuator Specifications

Details actuator specifications, including sizes, pressure limits, travel, and weights.

Installation Procedures

Actuator Mounting

Provides step-by-step instructions for mounting the actuator onto the valve body.

Loading Connections

Details how to connect the control line to the actuator for pressure regulation.

Startup and Adjustment

Startup for Pressure-Reducing Service

Steps for placing the actuator into operation for pressure-reducing applications.

Startup for Pressure-Relief Service

Steps for placing the actuator into operation for pressure-relief applications.

Pressure Setting Adjustment

Procedures for adjusting pressure settings and changing the nameplate.

Shutdown Procedures

Maintenance

Actuator Disassembly and Assembly

Describes complete disassembly and assembly procedures for the actuator.

Top-Mounted Handwheel Maintenance

Instructions for disassembly and assembly of the top-mounted handwheel.

Parts Ordering

Parts List