Eaton CROUSE-HINDS SERIES Operating Instructions Manual

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Eaton CROUSE-HINDS SERIES Operating Instructions Manual Manual pdf 6 page image

6Explosion-protected empty enclosuremade of stainless steel type N-TB6.2 Opening the enclosuresCover with screws:The screws can be solved with a suitablescrewdriver.Do not overextend hinges when openingenclosure covers.6.3 FlangesFlange plates for empty enclosure type N-TBshall be fitted so that the IP protection ismaintained.PE conductors fed from outside are to beconnected to the PE terminal provided on theflange.Attention: Metal flanges, metal platesand metal cable glands shall be includedin the equipotential earth connection.6.4 Closing the enclosure/cover closureAny foreign matter is to be removed fromthe apparatus.The enclosure cover and base shall be alignedcorrectly to ensure the correct fit of the seals.Cover with screws:The screws can be tightened with a suitablescrewdriver.In order to ensure the required minimumprotection category, the cover screws are to betightened down (see technical datas).Overtightening might impair theprotection category.6.5 Taking into operationPrior to taking the empty enclosure typeN-TB into operation, the tests specified in therelevant national regulations will have to becarried out.In addition, the correct functioning and installa-tion of the empty enclosure typeN-TB in accordance with these operatinginstructions and other applicable regulations shallbe checked.Attention:Only fully certified enclosures may beinstalled and put into operation.Incorrect installation and use of the emptyenclosure type N-TB can invalidate theguarantee.7 Maintenance / ServicingThe relevant national regulations whichapply to the maintenance/repair of electricalapparatus in explosive atmospheres, shall beobserved (IEC/EN 60079-17).The required maintenance intervals depend onthe specific application and shall therefore bedetermined by the user dependent on theconditions of use.When servicing the apparatus, particularly thoseparts that are decisive for the type of protectionagainst explosion, shall be checked (e.g.intactness and tightness of the enclosure,efficacy of the gaskets and the cable entries).If during servicing, repairs prove to be necessary,section 8 of these operating instructions shall beobserved.8 Repairs / Overhaul /ModificationsOverhaul and repairs may only be carried outwith original COOPER CROUSE-HINDS spareparts.Repairs that affect the explosionprotection, may only be carried out byCOOPER CROUSE-HINDS or a qualifiedelectrician in compliance with the applicablenational rules (IEC/EN 60079-19).Modifications to the apparatus or changes of itsdesign are not permitted.9 Disposal / RecyclingWhen the empty enclosure type N-TB isdisposed of, the respective national regulationson waste disposal shall be observed.Subject to modifications or supplement of theproduct range.The responsibility for the suitability andproper use of the empty enclosuretype N-TB lies with the user.XATEX - IEC The operation temperatures of the sealingmaterials have to be taken into account for thecertification of the complete equipment.XATEX - IEC The creepage and clearance distances in theenclosure have to be taken into account for thecopmlete electrical equipment.XATEX - IEC The painted empty enclosure typeN-TB P * ** ** ** * * SL * **** may only beused in areas with potential explosive dustatmospheres if high or repeated chargingprocesses (e.g. air ions in the vicinity of high volt-age electrodes, high speed flowing liquids andpneumatic transfer of powders, and paper orplastic foils transported by machines) are surelyexcluded. Manual rubbing is not considered tobe a high charging process.6 InstallationFor the mounting and operation, the respectivenational regulations as well as the general rulesof engineering shall be observed.XATEX - IEC The lid must be opened and closed invertical position so that the hinges are surelyprotected against excessive mechanical forces.The composition of internal / external earth boltsee chapter 10.2.XATEX - IEC For the maximum connectable cross sectionof the internal / external earthing stud seetechnical datas.The maximum cross section of the earting studhas to be taken into account for the maximumacceptable cross section of the supply lines forthe complete electrical equipment.The electrical connection may only becarried out by skilled staff accordance toIEC/EN 600479-14.Incorrect installation and use of the emptyenclosure type N-TB can invalidate theguarantee.6.1 MountingThe empty enclosure type N-TB can be mountedwithout opening the enclosure.Empty enclosures of the type N-TB are intendedfor wall mounting. They may only be affixed atthe given points and shall be positioned evenly.The screw used shall fit the fixing holeand must not damage it(e.g. use of washer).GB