Edwards RV3 Instruction Manual

5. Operaon
WARNING:
Do not expose any part of the human body to vacuum as it can cause injury.
5.1 ATEX direcve implicaons
This equipment is designed to meet the requirements of Group II Category 3 equipment
in accordance with Direcve 2014/34/EU of the European Parliament and the Council of
26th February 2014 on the approximaon of the laws of the Member States concerning
equipment and protecve systems intended for use in potenally explosive
atmospheres. (The ATEX Direcve)
The ATEX Category 3 applies in respect of potenal ignion sources internal to the
equipment. An ATEX Category has not been assigned in respect of potenal ignion
sources on the outside of the equipment as the equipment has not been designed for
use where there is an external potenally explosive atmosphere.
There is no potenal source of ignion within the pump during normal operaon but
there may be potenal sources of ignion under condions of predictable and rare
malfuncon as dened in the Direcve. Accordingly, although the pump is designed to
pump ammable materials and mixtures, operang procedures should ensure that
under all normal and reasonably predictable condions, these materials and mixtures
are not within explosive limits. Category 3 is considered appropriate for the avoidance of
ignion in the case of a rare malfuncon which allows ammable materials or mixtures
to pass through the pump whilst within their explosive limits.
5.1.1 Flammable/pyrophoric materials
WARNING:
Obey the instrucons and take note of the precauons given below to ensure that
pumped gases do not enter their ammable ranges
When ammable or pyrophoric materials are present within the equipment:
▪
Do not allow air to enter the equipment.
▪
Ensure that the system is leak ght.
▪
Use an inert gas purge (for example, a nitrogen purge) to dilute any ammable
gases or vapours entering the pump inlet, and/or use an inert gas purge to reduce
the concentraon of ammable gases or vapours in the pump and in the exhaust
pipeline to less than one quarter of the gases' published Lower Explosive Limits
(LEL).
▪
Use an inert gas purge into the pump gas ballast connecon to prevent the
condensaon of ammable vapours within the pump mechanism and exhaust
pipeline.
03/2021 - ©Edwards Limited
Page 34A65201880_AA
A65201880_AA - Operaon

Edwards RV3 Specifications

General

Brand	Edwards
Model	RV3
Category	Water Pump
Language	English