USER MANUAL DV WITHOUT CONTROLLER VERSION 1.01.13 90925371

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49

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r.4.3.2Motorandbeltdrive

Thebearingsarefactorylubricatedanddonotrequireanyservicelubrication.Thebeltdriveistobe

checkedforcorrecttightnessandthatitisundamaged.OnsmallerAHU,therotorisfittedwithanelastic

beltdriveandsuppliedwithareservebelt

ontherotor.Thisbeltdrivedoesnotrequireserviceandcannot

beshortened.Anewbeltcanbefittedusingspecialisttools.OnlargerheatexchangerstherotorhasaV‐

beltwithabeltconnector.Ifthebeltisnolongertight,itmustbe shortenedtoa

lengthwhichenablesthe

motorbaseframetighteningspringtoholdthebelttight.Ifnewscrewsareusedforthebeltconnector,

theymustnothavealengthwhichexceedsthethicknessofthebeltandconnector.Removetheexcess,if

any,withafile.

r.4.4Crossflowand

counterflowexchanger

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Onceayeartheedgesoftheheatexchangerplatesaretobechecked for

cleanliness

anddamage.

Ifthereisdustontheedgesofthe

pla

tes,removeitwithasoftbrush.Ifgreaseorothersuchsubstances

arepresent,thentheedgesmustbewashedusinggreasedissolvingdetergents

r.4.4.1By‐passdamper

Thedamperbladesarefittedwithsyntheticbearingsrequiringnolubrication.Eachdamperbladeis

connected byapivotingsystem.Thesteelrods andbrassbushesdo not requirelubrication.Air‐tightnessof

thedampers,whenthedampermotor isintheclosedposition,must be

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visually

checkedonceayear.The

dampermotor istobeadjustedifthedamperdoesnot closetightly.

r.4.4.2Condensatewaterdrain

Onceayearcleanthedriptraybeneaththeheatexchanger,aswellasthedrainandthewater

trap.

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Takecarethatthatthereissufficientwaterinthewatertrap.Ifadropleteliminatorhasbeenfitted,this

mustbe

checked

onceayearandcleanedifnecessary.

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