Installation, Operation and Maintenance Manual
VCIOM-15345-EN Rev. 1
February 2022
Introduction
1
Section 1: Introduction
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 Biffi 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 Overview
The Biffi 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 Biffi EHO utilizes a
dependable spring-return actuator for the fail-safe stroke combined with an integral
hydraulic power pack and electronic control module.
The Biffi 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 Biffi EHO provides a compact design with actuator and control components that have
been field proven for decades in critical service applications.
The Biffi EHO is designed for modulating ESD applications and comes with alert, alarm,
diagnostic, and self-calibration features.
