Air Science Purair BASIC - Cabinet Operating Procedure

Air Science
®
120 6th Street \ Fort Myers, FL 33907 \ T 239-489-0024 \ Toll Free 800-306-0656 \ F 800-306-0677 \ www.airscience.com
23 \ USER OPERATION MANUAL: Purair Basic Series
4.2 Cabinet Operating Procedure
• Thefumehoodshouldonlybeoperatedwiththecorrectlterinstalledfortheapplication.Referto
Filter Information - page 32 for further information. The ductless fume cabinet must not be used for labora-
toryworkinwhichchemicalsofdifferenttypesareusedthatdonotmatchtheltertypeorthattheprimary
chemicals and their byproducts are not known. The ductless fume cabinet should not be used for different
chemicalprocesseswherechemicalsfromthedifferentprocessescouldreactinthelter.
• To start the system, apply power to the system and switch on the green power On/Off switch. The lights and
fan will automatically turn on.
• Checktheairowandthelterconditionofthecabinetonaregularbasis.ThisiscoveredinMaintenance -
page 25.
• Pleasenote,lterblocksdonotabsorbcarbonmonoxideorhydrogen.Smallquantitieswillnotcausehazards
because of the large dilution factor from the amount of air passing through the cabinet and the retardation of
thechemicalintheltermatrix.
• Air Science fume hoods have been designed to handle fumes and vapors given off during everyday labora-
toryprocedures.Thesewillbeatthepartspermillion(PPM)levelintheairstreamenteringthelterblock.It
is not recommended that large quantities of solvents or acids be used or boiled off in the cabinet.
• Intheeventofalargespillageinthecabinet,theamountoffumesenteringthelterblockmaytemporarily
reducetheefciencyofthelter.Forthisreasonanymajorspillagemustbeclearedupimmediately,prefera-
bly using spillage absorption granules rather than paper, which may aggravate the evaporation of toxic fumes
from the spillage area.
• Followingamajorspillage,theltersmustbechanged,astheheatofwettingmayreducetheefciencyof
thelter.Afteraperiodofstabilization,theoldltersmaybereused,providingtheyhavenotreachedthe
saturation level.
• The electrical equipment in the cabinet such as the lights and controls are not in the dirty air stream of the
system.Thesystemshouldnotbeusedinaammableroomatmosphere.Specialmodiedcabinetscanbe
provided for use in these areas. Contact Air Science for further information on these applications.
• Operators should avoid sudden movements within the fume cabinet, such as rapid opening or closing of the
sashwindow,asthismaycausetemporaryreversaloftheairow.
• The operators should maintain the normal safety equipment and procedures for dealing with hazardous chemicals.
WARNING!
» Donotuseagasame(Bunsenburners)wheneverpossible,asitinterfereswithairow.
» Do not change the original blower speed of the cabinet unless the change is required by a decrease in
measuredairvelocity.Adjustmentshouldbemadeonlybyaqualiedtechnician.Donotoperatethe
cabinet if fan fails to run.
» Minimizearmmovement.Movearmsinandoutofthecabinetslowlytoavoiddisruptingcabinetairow.
» Use absorbent pads on the work surface where appropriate to minimize splatter and aerosol generation
in case of spillage.
» Keep lids/covers on all containers, dishes or sample plates.