ABB MBT Series - Installation and Maintenance Instructions; Safety and Handling Precautions

Fläkt Woods 8265 GB 2011.10 3 Specifications are subject to alteration without notice
Installation and maintenance instruction
Fläkt Woods three phase asyncronous motor
Manufacturer: ABB
Foundation
Thepurchaserbearsfullresponsibilityforpreparationof
thefoundation.
Metalfoundationsshouldbepaintedtoavoidcorrosion.
Foundationsmustbeeven,andsufficientlyrigidtowith-
standpossibleshortcircuitforces.Theyshallbedimen-
sionedastoavoidtheoccurrenceofvibrationdueto
resonance.
Foundation studs
Boltthefoundationstudstothefeetofthemotorand
placea1-to-2mmshimbetweenthestudandthefeet.
Alignthemotordirectlyusingappropriatemeans.
Groutthestudswithconcrete,check,alignmentanddrill
holesforlocatingpins.
Drain holes
Alwayscheckthatopendrainholesfacedownward.
Machineswithclosableplasticdrainplugsaredelivered
withtheseopen.
Inextremelydustyenvironments,alldrainholesshould
beclosed.
Alignment
Correctalignmentisessentialtoavoidbearingfailures,
vibrationsandpossiblefracturedshaftextensions.
Slide rails and belt drives
• Fastenthemachinetothesliderailsasshowninfigure2.
• Placethesliderailshorizontallyonthesamelevel.
• Checkthatthemachineshaftisparallelwithdriven,
 ordriving,shaft.
• Anybeltmustbetensionedaccordingtothesupplier’s
 instructions.
Donotexceedthemaximumbeltforces(i.e.radialbearing
loading)statedintherelevantproductcatalogues.
Connection
Thenormalmachinedesigniswiththeterminalboxon
topandwithcableentrypossiblefrombothsides.
Somemachinesareavailable,asaspecialoption,withtop
mountedterminalboxesrotatable4x90°,andsomewith
sidemountedterminalboxes.
Availabilityofthesesolutionsisdescribedintheproduct
catalogues.
Unusedcableentriesmustbeclosed.
Aswellasmainwindingandearthingterminals,the
terminalboxcanalsocontainconnectionsforthermistors,
standstillheatingelements,bimetallic,switches,orPT
100resistanceelements.
WARNING!
 Excessivebelttensionwilldamage
 bearingsandcancauseshaftbreakage.
Connectiondiagramsforauxiliaryelementsarefound
insidetheterminalboxcover.
In frequency converter applications motorframe
externalearthingmustbeusedforequalisingthepoten-
tialbetweenthemotorframeandthedrivenmachine,
unlessthe two machinesaremounted onthe same
metallicbase.FormotorframesizesaboveIEC280,use
0.75x70mmflatconductororatleasttwo50mm²round
conductors.Thedistanceoftheroundconductorsmust
beatleast150mmfromeachother.
Thisarrangementhasnoelectricalsafetyfunction;the
purposeistoequalisethepotentials.Whenthemotor
andthegearboxaremountedonacommonsteelfunda-
ment,nopotentialequalisationisrequired.
TocomplywithEMC-requirements,onlycablesand
connectorsapprovedforthispurpose.(Seeinstruction
forfrequencyconverters.)
Assembly and dismantling
General
Dismantlingandassemblyofmachinesmustbecarried
outbyqualifiedpersonnelusingonlysuitabletoolsand
workingmethods.
Bearings
Specialcareshouldbetakenwiththebearings.
Thesemustberemovedusingpullersandfittedby
heatingorusingspecialtoolsforthepurpose.How
toreplacebearingsisdescribedindetailinaseparate
instructionleafletavailablefromABBSalesOffice.
WARNING!
 Voltagemaybeconnectedatstandstill
 insidetheterminalboxforheating 
 elementsordirectwindingheating.
WARNING!
 Thecapacitorinsingle-phasemotors 
 canretainachargethatappears 
 acrossthemotorterminals,evenwhen
 themotorhasreachedstandstill.
0.75 mm
70 mm
> 150 mm
min 50 mm
Cables/wire s
Plate/strip
U1
V1
W1
PE
3 ~ M
Driven machinery
Potential equalisation