Introduction; Scope And Definitions; Atex Directive Implications - Edwards RV3 Instruction Manual

2. Introduction

2.1 Scope and definitions

This manual provides installation, operation and maintenance instructions for the RV3,
RV5, RV8 and RV12 Rotary Vane Pumps. The pump must be used as specified in this
manual.
The units used throughout this manual conform to the SI international system of units of
measurement.

2.2 ATEX directive implications

This equipment is designed to meet the requirements of Group II Category 3 equipment
in accordance with Directive 2014/34/EU of the European Parliament and the Council of
26th February 2014 on the approximation of the laws of the Member States concerning
equipment and protective systems intended for use in potentially explosive
atmospheres. (The ATEX Directive).
The ATEX Category 3 applies in respect of potential ignition sources internal to the
equipment. An ATEX Category has not been assigned in respect of potential ignition
sources on the outside of the equipment as the equipment has not been designed for
use where there is an external potentially explosive atmosphere. There is no potential
source of ignition within the pump during normal operation but there may be potential
sources of ignition under conditions of predictable and rare malfunction as defined in
the Directive.
There is no potential source of ignition within the pump during normal operation but
there may be potential sources of ignition under conditions of predictable and rare
malfunction as defined in the Directive. Accordingly, although the pump is designed to
pump flammable materials and mixtures, operating procedures should ensure that
under all normal and reasonably predictable conditions, these materials and mixtures
are not within explosive limits. Category 3 is considered appropriate for the avoidance of
ignition in the case of a rare malfunction which allows flammable materials or mixtures
to pass through the pump while within their explosive limits.
When flammable or pyrophoric materials are present within the equipment:
▪ Do not allow air to enter the equipment.
▪ Ensure that the system is leak tight.
For further information, please contact us: refer to our website
www.edwardsvacuum.com
A65201880_AA
A65201880_AA - Introduction
for details of your nearest company.
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