Eaton CROUSE-HINDS Ex - d Series Operating Instructions Manual

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Eaton CROUSE-HINDS Ex - d Series Operating Instructions Manual Manual pdf 30 page image

30Do not clamp the restraining cord betweenthe enclosure cover and base.Tighten the middle screw on the side with thehinge first.The following applies for enclosures with orwithout optional cover hinge:In order to ensure the required minimumprotection category, the cover screws shall bepositioned correctly and then tightened firmly.At first, only tighten all the cover screws lightly.Then tighten the cover screws securely in adiagonal pattern to prevent any tension on thecover.XATEX - IEC See Technical Data for test torques.Over tightening of the cover screws candamage the thread inserts in the enclosurebase an can impair the degree of protection.6.7 Putting into operationBefore putting the apparatus into operation,the tests specified in the individual nationalregulations shall be performed.In addition, before being put into operation, thecorrect functioning of the apparatus and of thebuilt-in components (measuring instruments,signal lamps, pushbuttons, etc.) shall bechecked in accordance with these operatinginstructions and other applicable regulations.a The incorrect installation and operation ofcomponents can result in the invalidation ofthe guarantee.7 Maintenance / Servicinga Prior to opening the enclosure, it isnecessary to ensure that the voltage supplyhas been isolated or to take suitableprotective measures.Before opening the enclosure, ensure thatno potentially explosive atmosphere ispresent.The valid national regulations for theservicing / maintenance of electricalapparatus for use in potentially explosiveatmospheres shall be observed(IEC/EN 60079-17).The necessary intervals between servicing shallbe stipulated by the operator.Special attention should be given to ensuringthe:– Integrity and tightness of the enclosure.– Integrity of the flameproof joints on theenclosure body and enclosure cover.– Integrity of the seals, cable feeds and cableentries.– Cable entries shall be corrosion-free.Clean the flameproof joints. Do not use anysharp tools to do this. The flameproof jointsshall be smooth and not have any scratches.Finally, apply a light coat of grease to theflameproof joints again.Preferred lubricant:Renocal FN 745/94,Renolit Unitemp 2.Damages to any parts of the flameproofencapsulation or flameproof joints shall beremedied immediately using original parts orthe damaged parts shall be repaired by themanufacturer. Otherwise the explosionprotection is no longer guaranteed.If, in the course of servicing, it is ascertained,that repairs are necessary, section 8 of theseoperating instructions shall be observed.8 Repair / Overhaul /ModificationsOnly original CCH parts shall be used forcarrying out repairs that concern the explosionprotection.Repairs that affect the explosion protectionmay only be carried out by Cooper Crouse-Hinds / EATON or a qualified electrician incompliance with the applicable nationallaws (IEC/EN 60079-19).In the event of damage to the flameproofencapsulation or flameproof joints,replacement of these components ismandatory. In case of doubt, the respectiveapparatus shall be returned to CCH forrepair.Reconstruction or modifications toapparatus are only possible within thescope of the approvals and shall becertified afterwards (EN 60079-19).9 Disposal / RecyclingThe respective valid national regulations forwaste disposal shall be observed whendisposing of apparatus.The product range is subject to changes andadditions.6.6 Closing apparatus / Cover lockAny foreign matter shall be removed fromthe apparatus.Grease the joint surfaces before screwing theenclosure cover onto the flameproof enclosure.Preferred lubricant:Renocal FN 745/94,Renolit Unitemp 2.The flat joints must not be painted or modifi-cated!Before closing the Ex-d enclosure with built-inload disconnect switch, set the switch to the„ON“ position.When fitting the apparatus cover, care shallbe taken to ensure that the switch shaft ofthe switch insert engages correctly in thecarrier hole of the switch handle.Enclocure with optinal cover hinge:Do not damage flameproof joints on theenclosure cover and enclosure by makingscratches!– Align the enclosure cover on the base.Enclosure with optional cover hinge (Fig.5)– Close the enclosure cover.– Push the hinge catch back.Take care not to crush fingers when pressingthe cover onto the enclosure base– Press the side of the enclosure cover withthe hinge onto the base against the springpressure.Fig.5 Closingenclosure with optional hingGBExplosion-protected, light alloy Ex-d (e) control stations anddistributions, Series: GHG 64