15
BÜCHI
Vacuum Controller
V-800/V-805
5 Operation V-800
5.5.2
Possible interventions into the regulation
process
[P
é
]
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]
puts the apparatus
back into the
RUN
mode with the original set point.
[OK]
puts it back into the
RUN
mode with the new set point.
[P
ê
]
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.
5.5.3 Choose program
[MENU]
ð
[MODUS]
ð
[TIMER]
[PROG]
Define distillation time with the buttons
[
é
]
and
[
ê
]
confirm
the value with
[OK]
.
Define working pressure with the buttons
[
é
]
and
[
ê
]
confirm the value with
[OK]
.
5.5.4 Saving a program
Save program (if desired).
[OK]
is saving the program to
the recommended number,
[ESC]
is ignores the saving
of the program. In both cases the display changes into
the basic state of the timer function.
Now, the controller is ready. Use
[RUN]
to start the
controller.
