Emerson Fisher EZH Series - User Manual

D103680X012
R94
Europe, Middle East and Africa Only
Types EZH and EZHSO
May 2019
Types EZH and EZHSO Pressure Reducing Regulators
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. 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.
Figure 1. Type EZH Pressure Reducing Regulator
Figure 2. PRX Series Pressure Reducing Pilots
Types EZH, EZHSO, EZH OS2 and EZHSO
OS2 regulators are in conformity with the
Pressure Equipment Directive PED 2014/68/EU
and are classied in Category IV.
Instruction Manual
CONTENTS
Introduction ..................................................................... 2
Characteristics ................................................................ 3
Labelling .......................................................................... 5
Dimensions and Weights ................................................ 6
Description ...................................................................... 8
Principle of Operation ...................................................... 8
Monitoring Systems ......................................................... 12
Installation ...................................................................... 14
Startup and Adjustment .................................................. 16
Shutdown ........................................................................ 18
Maintenance ................................................................... 19
Troubleshooting .............................................................. 26
Spare Parts ..................................................................... 28
Parts List ......................................................................... 28
TYPE PRX-120/APTYPE PRX-120
WARNING
!

Emerson Fisher EZH Series Specifications

General

Brand	Emerson
Model	Fisher EZH Series
Category	Controller
Language	English