SystemAir Danvent DV

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r.5.3RotaryheatexchangerDVC
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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
r 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
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Onceayeartheedgesoftheheatexchangerplatesaretobechecked for
cleanliness anddamage.