A732-01-880 Issue D
Page 2 © Edwards Limited 2018. All rights reserved.
Introduction
1.2 ATEX directive implication
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 29th March 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 foreseeable 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 foreseeable 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 whilst within the explosive limits.
When flammable or pyrophoric materials are present within the equipment:
Do not allow air to enter the equipment.
Ensure the system is leak tight.
For further information contact Edwards; refer to the Addresses on the back cover of this manual.
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