Fisher 3660 User Manual

www.Fisher.com
Fisherr 3660 and 3661 Positioners
Contents
Introduction 2.................................
Scope of Manual 2.............................
Description 2.................................
Specifications 2...............................
Educational Services 2.........................
Installation 5..................................
Hazardous Area Classifications and Special
Instructions for “Safe Use” and Installation
in Hazardous Locations for 3661 Positioner 5....
CSA 5....................................
FM 6.....................................
ATEX 6...................................
IECEx 7...................................
Positioner Mounting 8.........................
Mounting on 1250, 1250R, 3024S
and GX Actuators 8......................
Mounting on Baumannt Actuators 12........
Mounting on 657 and 667 Actuators 13.......
Feedback Lever Assembly and
Range Spring Installation 16..................
Pressure Connections 19.......................
Supply Connection 19......................
Output Connection 21......................
Instrument Connection 21..................
Diagnostic Connections 21..................
Vent Connection 22...........................
Electrical Connections for 3661 Positioners 22.....
Calibration 23..................................
Split Range Operation 25.......................
3660 Bypass Operation 26.......................
Principle of Operation 27........................
Maintenance 28................................
Changing the Positioner Action 29...............
Changing the Range Spring 29..................
Changing the Input Signal Range on
3660 Positioners 29.........................
Removing the Positioner from the Actuator 29.....
Center‐Bolt Mounting on 1250, 1250R,
3024S and Baumann Actuators 29.........
Clamp Mounting on 1250, 1250R
and 3024S Actuators 30..................
Mounting Bracket/U‐Bolt Mounting on
657 and 667 Actuators 30................
Figure 1. Fisher 3660 Positioner Mounted on a
Baumann Actuator
W7174
Changing the Input Module
Diaphragm Assembly 30.....................
Disassembling and Assembling Relay
Components 31............................
Disassembling and Assembling the Bypass
Valve 32...................................
Replacing the 3661 Converter Module 33.........
Parts Ordering 33...............................
Parts Kits 34...................................
Repair Kits 34.................................
Mounting Kits 34..............................
Parts List 34...................................
Positioner Common Parts 34....................
Diagnostic Connections 39.....................
Mounting Parts 39.............................
Loop Schematics for 3661 Positioners 42...........
Instruction Manual
D101402X012
3660 and 3661 Positioners
September 2015

Fisher 3660 Specifications

General

Enclosure Rating	NEMA 4X, IP66
Input Signal	4-20 mA
Temperature Limits	-40 to 85°C (-40 to 185°F)
Output Signal	3-15 psig (0.2-1.0 bar)
Ambient Temperature Range	-40 to 85°C (-40 to 185°F)

Summary

Introduction

Scope of Manual

Manual covers installation, operation, calibration, maintenance, and parts ordering for 3660/3661 positioners.

Description

Details pneumatic and electro-pneumatic positioners used with Fisher actuators.

Specifications

Specifications for the 3660 and 3661 positioners are shown in table 1.

Educational Services

Information on courses for 3660 and 3661 positioners and other products.

Installation

Hazardous Area Classifications and Special Instructions for "Safe Use” and Installation in Hazardous Locations for 3661 Positioner

Special instructions for safe use and installation in hazardous locations for the 3661 positioner.

CSA

Details CSA approvals and special conditions for safe use for the 3661 positioner.

FM

Details FM approvals and special conditions for safe use for the 3661 positioner.

ATEX

Details ATEX approvals and special conditions for safe use for the 3661 positioner.

IECEx

Details IECEx approvals and conditions of certification for the 3661 positioner.

Positioner Mounting

Mounting on 1250, 1250R, 3024S, and GX Actuators

Procedures for mounting positioners on specific Fisher actuators.

Center-Bolt Mounting (GX Actuator)

Specific mounting procedure for GX actuators using center-bolt method.

Clamp Mounting

Procedure for mounting positioners using the clamp method.

Mounting on Baumann Actuators

Mounting on 657 and 667 Actuators

Pressure Connections

Supply Connection

Requirements for connecting clean, dry, oil-free air supply to the positioner.

Output Connection

How to connect the OUTPUT connection to the actuator diaphragm casing.

Instrument Connection

How to connect the control device output to the positioner INSTRUMENT connection.

Diagnostic Connections

Information on special connectors for diagnostic testing of valve/actuator/positioner packages.

Vent Connection

Location of the 1/4 NPT vent connection in the cover.

Electrical Connections for 3661 Positioners

Calibration

Split-Range Operation

3660 Bypass Operation

Principle of Operation

Maintenance

Changing the Positioner Action

Procedure to change positioner action from direct to reverse or vice versa.

Changing the Range Spring

Procedure to change the range spring for split-range operation.

Changing the Input Signal Range on 3660 Positioners

How to change the input signal range for 3660 positioners.

Removing the Positioner from the Actuator

Procedures for removing the positioner from various actuator types.

Changing the Input Module Diaphragm Assembly

Procedure to change the input module diaphragm assembly.

Disassembling and Assembling Relay Components

Steps for disassembling and reassembling relay components.

Disassembling and Assembling the Bypass Valve

Procedures for disassembling and assembling the bypass valve.

Parts Ordering

Parts Kits

Lists various parts kits available for the positioners.

Repair Kits

Lists available repair kits for the positioners.

Mounting Kits

Lists available mounting kits for various actuator types.

Parts List

A general parts list for common components.

Positioner Common Parts

Lists common parts used in the positioner assembly.

Loop Schematics for 3661 Positioners