W.Tech RAA Series Instrukcja Obsługi Pobierz pdf (Strona 8)

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Pag7

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Theassemblycouldhehelped bymeansofpointers,whichwillbeinsertedintheholesinthelowerbodyjustbeforetheupperoneis

allowedtorestonit.Pleaseseefig.7.

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 

   Fig.7

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3.4 Electricalconnection

Ourunitsarenormallysuppliedwiththeelectricalmoto

rsalreadycabledandthewiresareavailableoutsideoftheunitminimizingthe

labour on site. In case of particular motor versionsor if the electrician is willing to re‐wire all, please findbelow the procedure to

follow.Inordertoconnectthemotorofthefans,itisnecessa

rytogoinsidetheupperbody,throughitsinspectionmanholes,seefig.

2.

Introducetheconnectioncabletilltheterminalbox,throughtheholesavailableinthecasing.

Capturethecabletooneofthepipesthatcomposesthemotorsupport,bymeansofclamps.Seefig.8.

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 

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  Fig.8

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Tomaketheconnectionofthemotors(andalsoofthefansandtheelectricalpump)thefollowingmeasureshavetobeconsidered:

• Before connecting themotorterminals tothemains, make sure thattheterminal voltageshownonthe motorplate is the

sameasthemai

nsvoltage.

• Makesurethatmotorterminalsaretightenedsecurelyandthatallstrippedwiresarecarefullyinsulatedinordertocarryout

theconnection.

• Checkthattherotationdirectionofthefanisthesameasthedirectionofthearrowsavailableonthediffuser.

• Wer

ecommendthatthemainssup plylinetothemotorshouldbeprotectedwithwellcalibratedthermal relaysandfuses.

Please remember that in across‐the‐line starting, a squirrel cage motor needs an intensity 6 to 7 times higher than the

nominalone.

• Makesurethelocalelectricalsafetyreg

ulationsinforcehavebeenrespected.

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3.5 Otherdetailsfortheinstallation

• Check and remove any material or element which has been part of the packing, and could be still joined to or inside the

tower.

• Connectbothexternalpartsofthepipe.

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