Fisher EZR Series User Manual

Type EZR Pressure Reducing Regulator
Introduction
Scope of the Manual
This instruction manual provides installation,
startup, adjustment, maintenance and parts ordering
information for Type EZR pressure reducing regulator,
Types 112 restrictor, 161AY, 161EB and
PRX Series pilot. Any accessories used with this
regulator are covered in their respective
instruction manuals.
Product Description
The Type EZR pilot-operated, pressure reducing
regulators are used for natural gas, air or other
non-corrosive gas applications and include a
Type 112 restrictor and a 161EB, 161AY or PRX Series
pilot. For applications that have high-pressure drops,
using a Type 161AYM or 161EBM monitor pilot will
increase the accuracy of the regulator.
Figure 1. Type EZR Pressure Reducing Regulator
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or re causing property damage and
personal injury or death.
Fisher™ regulators must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies, Inc.
(Emerson) instructions.
If the regulator vents gas or a leak
develops in the system, service to the unit
may be required. Failure to correct trouble
could result in a hazardous condition.
Call a gas service person to service the
unit. Only a qualied person must install
or service the regulator.
!
WARNING
TYPE EZR REGULATOR
161AY SERIES PILOT
TYPE PRX PILOT
Instruction Manual
D102600X012
January 2018
Type EZR

Fisher EZR Series Specifications

General

Brand	Fisher
Model	EZR Series
Category	Controller
Language	English

Summary

Type EZR Pressure Reducing Regulator

Introduction

Overview of the instruction manual's scope and a description of the Type EZR regulator.

Specifications

Details main valve body sizes, end connections, pressure ratings, and pilot type options.

Pilot Type Descriptions

Describes the characteristics and applications of various pilot types like 161AY, 161EB, and PRX Series.

Principle of Operation

Explains the operational schematic and how the regulator controls pressure.

Type EZR Installation

Covers general installation guidelines, warnings, and considerations for the Type EZR regulator.

All Installations

Discusses installation suitability for indoor/outdoor use and general considerations.

Wide-Open Monitor Installations

Details specific procedures for setting up wide-open monitoring systems.

Working Monitor Installations

Explains the setup and function of working monitor installations.

Startup and Adjustment

Provides step-by-step procedures for initial startup and pressure setting.

Pilot Adjustment

Details how to adjust the downstream pressure setting for various pilot types.

Low Flow Application Considerations

Offers advice and considerations for stable operation at low flow rates.

Shutdown and Maintenance

Covers safe shutdown procedures and general maintenance requirements.

Disassembly and Assembly

Provides detailed instructions for disassembling and reassembling the main valve and pilot.

Diaphragm and Plug Assembly Maintenance

Instructions for maintaining the diaphragm and plug assembly components.

Travel Indicator Assembly Maintenance

Procedures for removing, installing, and maintaining the travel indicator assembly.

PRX Series Maintenance

Specific maintenance procedures for PRX Series pilots, covering lower and upper case.

Damper and Restrictor Maintenance

Instructions for maintaining the damper and restrictor components.

Parts Ordering

Guidance on referencing equipment serial numbers and key numbers for ordering parts.