Eaton Crouse-Hinds Series Operating Instructions Manual

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Eaton Crouse-Hinds Series Operating Instructions Manual Manual pdf 16 page image

162 Safety instructionsaTarget group:For skilled electricians and suitablequalified, instructed personnelin accordance with national legislation,including the relevant standards and, whereapplicable, in acc. with IEC/EN 60079-14 onelectrical apparatus for explosive atmospheres.The control units GHG 432 and GHG 434. arenot suited for use in Zone0 and Zone 20.The requirements of the IEC/EN 60079-31regarding excessive dust deposits andtemperature to be considered from the user.The temperature class and type of protec-tion stated on the apparatus shall beobserved.Modifications or changes to the controlunits are not permitted.They shall be used for their intendedpurpose and shall be in a perfect and cleanstate.Prior to being put into operation, the controlunits shall be checked in accordance withthe instructions as per section 6.The national safety rules and regulations forthe prevention of accidents, as well as thesafety instructions included in theseoperating instructions, that, like this text,are set in italics, shall be observed!3 Conformity with standardsThe control units are conform to the standardsspecified in the EC-Declaration of conformity,enclosed separately.References to standards and directives in theseoperating instructions always relate to the latestversion. Other additions (e.g. details relating tothe year) shall be observed.4 Field of applicationThe control units are intended for use inpotentially explosive atmospheres in zones 1, 2and zones 21, 22 in accordance withIEC/EN 60079-10-1 and IEC/EN 60079-10-2.The enclosure materials used, including anyexternal metal parts, are high quality materialsthat ensure a corrosion resistance andresistance to chemical substances according tothe requirements for use in a ”normal industrialatmosphere”– impact resistant polyamide– special steel AISI 316 L.In case of use in an extremely aggressiveatmosphere, please refer to manufacturer.Contact arrangementsPushbuttonDouble pushbuttonMushroom-head pushbuttonMushroom-head pushbutton with keyKey-operated pushbuttonPotentiometerControl switch Ex 41 R6201Control switch Ex 41 R6102Control switch Ex 41 R6002Control switch Ex 41 R5307Control switch Ex 41 R5507Control switch Ex 41 R8701GBExplosion-protected control units GHG 43.