Eaton CROUSE-HINDS SERIES Operating Instructions Manual

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Eaton CROUSE-HINDS SERIES Operating Instructions Manual Manual pdf 24 page image

24The data as per point 3 and 4 will have to betaken into account with the use.Applications other than described are notpermitted without Cooper CrouseHinds’s(CCH) / EATON’s prior written consent.For the operation, the instructions stated insection 7 of the operating instructions willhave to be observed.6 InstallationFor the mounting and operation, the respectivenational regulations (e. g. Betr.Si.V, equipmentsafety act) as well as the general rules ofengineering will have to be observedIEC/EN 60079-14).6.1 MountingThe plastic and stainless steel control units canbe mounted without opening their enclosure.When being mounted directly onto the wall, thecontrol units shall rest evenly only at thefastening points provided for them. The chosenscrew shall match the fastening hole(see dimensional drawing and fig. 2 + 3).They shall not damage the hole (e.g. use of awasher).If the screws are overtightened, the plasticcontrol units may be damaged.The plastic control units GHG 444 2, 448 2,449 2 and GHG 447 2. are suitable for fasteningonto CEAG / Cooper Crouse-Hinds apparatusholders by means of self-cutting screws(see fig. 4-8).The respective mounting instructions will haveto be observed.Mounting the wall mounting brackets onto thestainless steel control units GHG 444 3, 448 3,449 3 and GHG 447 3 is done as per fig. 2 + 3.Observe the min. No. of wall mountingbrackets!6.2 Opening the device/Electrical connectionThe electrical connection of the apparatus mayonly be carried out by skilled staff(IEC/EN 60079-14).The circuit diagram of the built-in componentsis either shown on these components orattached to them or shown in the operatinginstructions.As to wired control units, the circuit diagramattached to the device is to be observed.! The total number of used conductors andinternal wiring conductors, can be found outin the wiring table page 24.After the hinged framework has been foldedout in order to facilitate the introduction ofcables or the connection to the terminalsarranged under the hinged framework, it shallagain be fitted properly in place.If, for the sake of an easier wiring, the built-incomponents (AM 72 and AM 45 measuringinstrument, push-button base, signal lampbase, control switch base, potentiometer baseetc.) are snapped off the top hat rail fitted in thehinged framework, the components will,thereafter, have to be properly re-inserted in thelock-in position on the top hat rail of the hingedframework.In order to snap off the components (includingmeasuring instruments AM 72 and AM 45), thesnap-in hooks are unlocked by pulling themoutwards.Mind: The lockin positions of the builtincomponents shall match the notches on thetop hat rail!In order to maintain the explosion category, theconductors will have to be connected withspecial care.The insulation shall reach up to the terminal.The conductor itself must not be damaged.The connectible min. and max. conductorcross-sections will have to be observed (seetechnical data).All screws and/or nuts of the supply terminals,also of those remaining vacant, shall betightened down.The fitted optional standard terminals aredesigned for direct connection of conductorswith copper cores.Switching on the axis of the Ex 23 andEx 29 control switch base whilst theenclosure is open, is not permitted (in orderto be able to properly close the switch again).On measuring instruments for c.t. connectionn/1A (fig. 1, item 2) the interchangeable scalescan be changed via a flap arranged on the upperpart of the measuring instrument (fig. 1, item 1).The instructions for the installation of intrinsicallysafe electrical apparatus are to be observed.It has to be ensured that the external capaci-tance and inductance permitted for the specificintrinsically safe circuit are not exceeded.21Fig. 1GBExplosion protected control unitsmade of plastic or stainless steel type GHG 44.