Buchi Rotavapo R-100 Manuel d'utilisateur télécharger pdf (Page 32)

6|Operation BÜCHILabortechnikAG

32/60 OperationManualRotavapor®R100

6.2 Performingdistillation

DANGER

Riskofpoisoningfrominhalationofhazardousvapors

u Donotinhaleanyvaporsproducedduringdistillation.

u Ensurethatvaporsareremovedimmediatelybyasuitablefumehood.

u Onlyusethedeviceinwellventilatedareas.

u Ifvaporsescapefromjointsorconnections,checkthesealsconcernedandre

placethemifnecessary.

u Donotdistillanyunknownfluids.

u Observethesafetydatasheetsforallfluidsused.

DANGER

Explosionriskfromdistillationofhazardousmaterials

u Donotdistillsolventsthatproduceexplosivemixturesofgases.

u Makesurethatthereisalwaysasluggishlyreactiveatmosphereinsidethesystem.

u Dischargeanyelectrostaticchargebysuitablegroundingarrangements.

u Keepsourcesofignitionawayfromtheapparatus.

WARNING

Riskofexplosionfromexcessiveinternalpressure

Theevaporatingflaskand/orthecondensercouldexplodeiftheinternalpressurepro

ducedbyevaporationbecomestoogreat.

u Makesurethattheinternalpressureinsidetheglasscomponentsisnevergreater

thanatmosphericpressure.

CAUTION

Riskofskinburnsfromhotcomponents

u Donottouchhotcomponentsunlesswearingsuitableprotectivegloves.

Toachieveoptimumdistillationresults,thefollowingprocedureisrecommended:

u Adjusttheflowrateofthecoolanttosuitthetypeofcoolantandthecoolingcapac

ity.Iftapwaterisused,theflowrateshouldbeatleast40L/h.

u Makesurethatthecoolanttemperatureisnotmorethan20°C.

u Poursolventintoevaporatingflaskandfitevaporatingflask(seeChapter6.1.2"Fit

tingtheevaporatingflask",page28).

u Makesurethatthereceivingflaskisfitted.

u Closetheglassstopcock.

u Switchontherotarydriveunitandadjusttherotationspeedifnecessary.

u Setthevacuumsothattheboilingpointofthesolventis20°Cbelowthetempera

tureoftheheatingbath.

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Buchi Rotavapo R-100 Manuel d'utilisateur Page 32