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53

r.5.3RotaryheatexchangerDVC



r.5.3.1Rotor

Therotoristobecheckedatleastonceayeartoensurethatitcanturnfreelyandeasily.Th iscanbedone

byremovingthebeltdriveatthemotorandthenturningtherotormanuallywithahandontheperipheral

rotorcasing.Atthesametimethe

brushsealsaretobeche ckedfordamage.Thebearingsarefactory

lubricatedanddonotrequireanyservicelubrication.Duringoperationtherotorcanbecomedirty.The 

rotorcanbecleanedbyblowingthroughwithcompressedair.

To easeinspectionandservicethe

otor

canbepulledoutofthesizes10,15,20,25og30.

r.5.3.2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.5.4Crossflowandcounterflowexchanger



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

cleanliness

anddamage.

SystemAir Danvent DV User Manual

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