USER MANUAL DV WITHOUT CONTROLLER VERSION 1.01.13 90925371

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s.Instructionsdesignedtoenableadjustmentandmaintenancetobe
carriedoutsafely,includingtheprotectivemeasuresthatshouldbetaken
duringtheseoperations
s.1.Protectivemeasuresandadditionalprotectivemeasures
Adjustmentandmaintenancemustbedonebyskilledtechnicians–usuallybasedonservicecontractsfor
someyearsorlong‐termESCOcontracts.
Theunitsareprovidedwithguardstoavoidunintendedhazardsandinjurybecauseofrotatingpartsinthe
unit.Thepotentialsourcesofharmarethefanswith
fastrotatingimpellers.Hazardsfromtheimpellers
areobviousduringoperation,butwhenpoweriscut‐off,theimpellersarestillpotentialhazardsdueto
after‐runforatleast20seconds.Noticethatevencut‐offtheimpellersarestillpotentialhazards.
Thefanguard’saretheinspectiondoors
andthedoorsareprovidedwithlocks.Insidethedoorsare
additionalprotectioninstalled–guardsthatonlycanberemovedbyuseoftools.
Othermotor‐drivenpartsaredamperswithdampermotorsandrotaryheatexchangers,butthemovement
issoslowthatguardmeasuresarenotnecessary.Just
keepyourhandsawayfromplaceswithriskofinjury.
Useparticulaterespiratorwhenfiltersarereplaced.
s.1.1Necessaryprotectionmeasurespriortostart‐up. 
Ensurethatallprotectionmeasuresareinstalledcorrectbeforestart‐up.
s.1.1.1Designofprotectionmeasures
Insidethedoorsareadditionalprotectioninstalled–guards
thatonlycanberemovedbyuseoftools.
s.1.1.2Configurationoffrequencyconverterswithinstalledguard
Afrequencyconverterismountedbesidethefaninsomeunits.Iftheconfigurationoffrequencyiscarried
outwiththefaninoperation,theguardmustbeinstalledforsafetyreasonsanda
longcablemustbe
installedbetweenthefrequencyconverterinsidetheunitandthecontrolpaneloutsidetheunit.
s.1.2Safeadjustmentandmaintenance
Beforemaintenanceandrepair,theunitmustbeswitchedoffbyswitchingofftheautomaticcircuit
breakersandblockthembypadlocks..Seetheillustrationbelow
abouthowtoplaceapadlockoneach
automaticcircuitbreaker.Notethatlampsmustbeswitchedonduringmaintenance(lampsarean
accessory–onlyinstalled,ifordered).
Usecut‐resistantglovesforprotectionagainstinjuryfromsharpmetalplateedges.UseCE‐markedgl oves
forthispurpose.Use
helmetduringmaintenanceworkintheunit.
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