Buchi Rotavapo R-250 Manual de usuario descargar pdf (Pagina 23)

Rotavapor R-250

5 Operation

Adjusting the Optional Automatic Lowering of

the Bath

s 0RESS THE BUTTON h,)&4 DOWNv 햳, simultaneously

swit ch ing on the main breaker switch 햲.

4HISRESULTSINTHEDISPLAYh/.vORh/&&v

On = The lift lowering has been switched ON

Off = The lift lowering has not been switched ON.

s 4OSWITCHBACKANDFORTHBETWEEN/.AND/&&PRESS

REPEATEDLYONTHEBUTTONh,)&4DOWNv햳.

s 4HEINPUTISSTOREDANDTHEUNITSWITCHEDINTOTHEOPERATING

MODEONLYAFTERTHEh!%2!4%vBUTTON햽 is then pressed

repeatedly.

If the option is activated, the bath is automatically lowered

when the equipment is switched on. This ensures that, if there

is a short power failure, the bath will be lowered.

5.3 Selection of Distillation Temperature

In order to attain optimum distillation conditions, the energy

supplied to the distillation from the bath must be dissipated

again across the cooler. In order to ensure this, it is best to

work according to the following rule of thumb:

Cooling water 'T2 Boiling temperature 'T1 Bath

max. 20 ºC 40 ºC 60 ºC

How do you attain these conditions?

s 3ETTHEBATHTEMPERATUREAT#

s !DJUSTTHECOOLINGWATER)TSTEMPERATURESHOULDNOTBE

higher than 20 ºC.

s !LLOWTHECOOLINGWATERTOmOWTHROUGHTHECOOLERATA

rate of about 120–150 liters/hr.

s 3ELECTTHEWORKINGVACUUMSOTHATTHEBOILINGPOINTOF

the solvent is at 40 ºC.

s /BTAINTHECORRESPONDINGVALUEFORTHEVACUUMFROMTHE

Table of solvents.

Advantages of a Bath Temperature of 60 °C

s %VAPORATINGmASKSCANBECHANGEDWITHOUTANYDANGER

of scalding.

s 4HERATEOFWATEREVAPORATIONOUTOFTHEHEATINGBATHIS

not yet very high.

s 4HEENERGYINTHEHEATINGBATHISBEINGUTILIZEDVERYEF-

ﬁciently.

The solvent should condense out in approx. 2/3 to 3/4 of

the lengths of the cooling coils present.

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 45 46

Comentarios a estos manuales

Sin comentarios

Buchi Rotavapo R-250 Manual de usuario Pagina 23

Comentarios a estos manuales

Relacionado con productos y manuales para Instrumentos de medición Buchi Rotavapo R-250