TheATDCshouldbecheckedregularlytoprevent
downtime.
Check the following:
1. Abnormalsoundsorvibrationsmaybecausedbya
damagedmotorbearingoradamagedimpeller.
2. Fasteningdevices-Checkthatnoloadcarryingbolted
joints are defective.
3. Electricalinstallation-Checkthatnodamagehas
arisen,andthesafetyswitchfunctionscorrectly.
4. Finstructure-Checkthatitiscleanandundamaged.
5. Impeller-Checkthatitiscleanandundamaged.
6. Condensatedrain–Checkthatthedrainisnotclogged.
Fan unit
Thefanmotorsfeaturepermanentlylubricatedbearings
anddonotrequireregularmaintenance.
Repair work
PartsandmaterialproposedbyLuvataSöderköpingAB
mustbeusedinorderforthestatedguaranteetoapply.
The guarantee does not apply to heat exchangers that
havebeendamagedthroughincorrectinstallation,
hammeringorfreezing.
Long-term storage
WhentheATDCistobekeptinlong-termstorage(normal-
lylongerthanonemonthofstorageintheNordicclimate)
the following applies for the unit heater:
1. The ATDC should be stored indoors as you intend to
install it.
2.WhentheATDCiskeptinadampenvironmentthe
surfacenishmustbecheckedtoensurethatdamage
doesnotoccur.Touch-upanydamage.
3.TheATDCshouldbecoveredwithreinforcedplasticor
othermechanicalprotectiontopreventcontamination
andwaterfrompenetratingandsoilingordamaging
thenstructureandfanunit.
4. The unit heater’s pipe connections should be sealed.
Risk of freezing
Thereisariskofdamageduetofreezingoninstallations
withoutdoorairmixingwhentheheatexchangerbecomes
toocold.Checkthatthefreezemonitorfunctionsandthat
theoutdoorairdamperclosesfully.Whenthesystemis
notusedduringthewinter,thewaterintheheatexchan-
gershouldbedrainedtopreventfreezing.Whentheheat
exchangercannotbefullydrainedwerecommendtheuse
ofcompressedairtoblowoutanyremainingwater.When
waterwithantifreezeisusedtheheatexchangerdoesnot
need to be drained.
Spare parts
Werecommendthatonefanunitiskeptasspareparts
whenaninstallationissubjecttoveryhighdemandson
availability.FanunitsarenormallykeptinstockatLuvata
Söderköping.Fanunitskeptassparepartsshouldbe
storedindoorsindryanddust-freeconditions.
Replacing the fan unit
ATDC without mixer unit or air recirculation unit
1. Switchoffthemainssupplytothemotor.Lockthe
safetyswitchintheOFFposition.
2. Disconnectthemainscablefromthemotor.
3. Loosenthesecuringscrewsonthecontactguardand
removethefanunit.
4. Followtheaboveinstructionsinthereverseorderto
assemble.
5. Beforestarting,checkthattheimpellercentresinthe
fan ring and that the direction of rotation corresponds
with the rotation direction arrow.
ATDC with mixer unit
1. Switchoffthemainssupplytothemotor.Lockthe
safetyswitchintheOFFposition.
2. Dismantletheltercoverandremovetheairlter.
3. Followtheinstructionsforreplacingthefanunit
withoutmixerunit,points2to5.
4. Fittheairlterandltercover.1
ATDC with air recirculation unit
1. Switchoffthemainssupplytothemotor.Lockthe
safetyswitchintheOFFposition.
2. Dismantletheairrecirculationduct,airlterandthe
underside of the air recirculation unit.
3. Followtheinstructionsforreplacingthefanunitwit
houtmixercomponentpoints2to5.
4. Fittheundersideofthereturnunit,airlterandair
recirculation duct.
Maintenance and service