26
BÜCHI Vacuum Controller V-800/V-805
Installation of the automatic dual temperature sensor (Version V)
8.5.2 Possible interventions into the regulating
process
[Pé]
Increase the system pressure or interrupt pressure drop in
the start phase. The apparatus goes into the hold mode
and regulates further to the actual value. If necessary, the
apparatus is partially ventilated. [ESC] the apparatus puts
back into the RUN mode with the original set point. [OK]
it puts back into the RUN mode with the new set point.
[Pê]
Reduce system pressure.
The apparatus goes into the hold mode and regulates furt-
her to the actual value. [ESC] puts it back into the RUN
mode with the original set point. [OK] puts it into the RUN
mode with the new set point.
[Set] ð [dP]
Change hysteresis.
You can increase the actual value with [é] and reduce it
with [ê] A = Automatic hysteresis. Confirm desired value
with [OK]. [ESC] puts it back into RUN mode with the
original value.
Transfer manually started distillation to automatic mode. The
distillation is continuously optimised by the automatism, and,
if physically possible, is carried out to dryness. At the end of
distillation, if so configured, rotation of evaporating flask is
stopped and the evaporating flask is lifted from the bath.
8 Operation V-805
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