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DuctlessFumeHoods
Chapter4–Installation
4.1GeneralRequirements
4.1.1LocationRequirements
Placingthefumehoodinaproperlocationisimportant.Badlocationmayaffecttheperformanceofthe
workstation.
Asseeninthechart,yourequipment’sinternalairflowvelocityisrelatively
low,whencomparedtotheairflowdisturbancespotentiallycausedbythe
openingofadoor,apersonwalkingbyor
adirectexposuretoanair‐
conditioningoutlet.Theseexternalairflowdisturbancescanaffecttheproper
laminarflowofthefumehoodandimpairedtheprotectionofferedbythe
workstation.
Wheninstallingthefumehood,itshouldbelocatedasfarawayaspossible
fromsourcesofairflowdisturbanceand
inanorientationwhichoptimally
shieldsthefumehood’sairflowfromallexternalairflowdisturbances.
Thefollowingrequirementsshouldbetakenintoaccount:
• Thelocationshouldbefarawayfromanykindofheatsource(heaters,fanconverters,etc.)for
facilitatingoptimumoperatingconditions.
• Thereshouldbe
adequatespaceleftforcleaningthebackofthecabinet.
• Thereshouldbeunobstructedaccesstothemainpowersupplypoint.
4.1.1.1PositionRequirements
Anypedestriantrafficroutes,thoroughfaresor
walkwaysshouldbeatleast1.0m(3’)fromthefront
ofthefumehood
Allowatleast30cm(1’)clearanceonbothsidesof
thefumehood.
Youshouldnotpositionthefumehoodwherethedistancebetweentheapertureandanydoorwayislessthan
1.5m(5’)orthedistancebetweenthesidepanelandanydoorwayislessthan1.0m(3’).