Eaton CROUSE-HINDS Series Manual

Also see for Crouse-hinds series: Operating instructions Instruction manual Operating instructions Operating instructions Instruction manual

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Eaton CROUSE-HINDS Series Manual Manual pdf 10 page image

106.3 Cable entries (KLE); blanking plugsGenerally only certified cable entries and blanking plugs may beused.Flexible cables shall be used with trumpet-shaped cable glands orother suitable entries with additional pull relief.When using cable entries with a degree of protection that is lower thanthe IP protection of the apparatus (see technical datas), the degree of IPprotection for the complete unit is reduced.The relevant mounting directives for cables entries being usedshall be observed.In order to ensure the minimum degree of protection, any unused entryholes shall be sealed with certified blanking plugs.When fitting cable entries, care has to be taken that the sealing insertsare suitable for the cable diameter. In the case of sealing inserts that arecut out, it is necessary to ensure that the insert is properly adapted to thecable diameter.In order to ensure the required minimum degree of protection, the cableentries shall be tightened down securely (see technical data).Overtightening can impair the degree of protection.When tightening the cap nut of the metal cable entry (e.g. type ADL/ADE),a suitable tool shall be used to safeguard the gland againsttwisting.Any unused metric CEAG cable entries shall be sealed with the blankingplug certified for these metric cable entries.6.4 Metal plates and external earth connectionIn case an external earth connection is mounted on the plastic enclosure,it should be connected with a max. 25 mm² wire.This earth connection is inserted through a M6 drill in the inner wall of theenclosure (see fig. 4). The standard terminals are designed for the directconnection of conductors with copper wires.Metal plates and metal glands shall be incorporated in thepotential equalization.6.5 Closing apparatusAny foreign matter shall be removed from the apparatus.The switch handle on the cover of the safety switch is to be set to the"ON" position.When fitting the apparatus cover, care shall be taken to ensurethat the switch shaft of the switch insert engages correctly in thecarrier hole of the switch handle.To ensure the required minimum degree of protection, the cover screwsshall be tightened down (see technical data).Overtightening may impair the degree of protection.6.6 Putting into operationBefore putting the apparatus into operation, the tests specified in theindividual national regulations shall be performed.In addition to this, before being put into operation, the correct functioningof the apparatus and installation of the apparatus shall be checked inaccordance with these operating instructions and other applicableregulations.The improper operation of switches GHG 261 may result in theinvalidation of the guarantee.7 Maintenance / ServicingThe valid national regulations for the servicing / maintenance ofelectrical apparatus for use in potentially explosive atmospheresshall be observed (IEC/EN 60079-17).Prior to opening the enclosure, it is necessary to ensure that thevoltage supply has been isolated or to take suitable protectivemeasures.The necessary intervals between servicing depend upon the specificapplication and shall be stipulated by the operator according to therespective operating conditions.During servicing, special attention shall be given to checking the parts onwhich the explosion protection depends (e.g. intactness of the flame-proof components, the enclosure, the seals and cable entries).If, in the course of servicing, it is ascertained, that repairs are necessary,section 8 of these operating instructions shall be observed.8 Repairs / Overhaul /ModificationsOnly original COOPER Crouse-Hinds parts shall be used for carrying outrepairs.In the event of damage to the flameproof encapsulation, replace-ment of these components is mandatory. In case of doubt, therespective apparatus shall be sent to COOPER Crouse-Hinds forrepair.Repairs that affect the explosion protection may only be carried outby COOPER Crouse-Hinds or by a qualified electrician in compliancewith the respective national regulations (IEC/EN 60079-19).Modifications or changes to the safety switches are not permitted.9 Disposal / RecyclingThe respective valid national regulations for waste disposal shall beobserved when disposing of apparatus.To facilitate the recycling of individual parts, parts made of mouldedplastic shall bear the marking for the type of plastic used.The product range is subject to changes and additions.External earth connectionInner wall ofthe enclosureFig. 4Internalearth plateInternal earthconnectionGBExplosion-protected safety switch, main switch,load disconnect switch 10 A, GHG 261