Section 1: Introduction; Scope; General Information; Safety Information - Emerson Bettis EHO Installation, Operation And Maintenance Manual

Installation, Operation and Maintenance Manual
VA001-507-32 Rev. 1

Section 1: Introduction

1.1

Scope

This manual is offered as a guide to be used along with locally approved and safe practices
to install, operate, service and maintain the Bettis EHO Actuator. Carefully follow the
instructions in this manual and make sure you install the actuator correctly and according
to your requirements.
1.2

General Information

1.2.1
The Bettis EHO is a self-contained, quarter-turn, valve actuator that combines proven
technologies from Emerson's Actuation Technologies. The actuator has been designed for
critical shutdown applications where reliability is crucial. The EHO utilizes a dependable
spring-return actuator for the fail-safe stroke combined with an integral hydraulic power
pack and electronic control module.
The EHO accepts a wide range of single-phase, three-phase or DC power sources. A
hydraulic handpump can be used to stroke the actuator during commissioning or in the
event of an emergency power loss.
Electronic modules are contained within an explosion proof, IP68 enclosure and all
electronic components are isolated from the customer connection terminals.
The EHO provides a compact design with actuator and control components that have been
field proven for decades in critical service applications.
1.3

Safety Information

Safety notices in this manual detail precautions the user must take to reduce the risk of
personal injury and damage to the equipment. The user must read these instructions in
their entirety. Failure to observe these safety notices could result in serious bodily injury,
damage to the equipment, void of the warranty. Take special notice of all tags, warning
labels and instructions presented on the actuator. These may provide more specific and
significant information regarding the actuator than this general manual.
It is the responsibility of the user to ensure proper safety practices are utilized. Always
take necessary precautions and use proper protective equipment when dealing with
compressed gases, compressed hydraulic fluid, pinch points and electricity.
Safety notices are presented in this manual in three forms (Warning, Caution and Note)
as follows:
WARNING
!
Alerts user of potential danger; failure to follow the warning notice could result in serious
personal injury or death.
Introduction
Overview
Section 1: Introduction
December 2022
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