Operation
6.2.1
Selection, display of operating modes
After switching on, the desired operating mode can be set with the cursor keys
↑
UP
and
↓
DOWN
. The current operating mode appears in the first position of the display and is acti-
vated with the
START
key (a "
-
" appears in the second position of the display). The
STOP
key terminates the operating mode ("
-
" disappears) and the control is thus disabled.
The current control parameters can be brought into the display while the program is running
without interrupting the control sequence by pressing the
START
key for 3 seconds.
The code letter of the currently selected parameter appears in the
STATE
display field and
its associated value in the
VALUE
display field.
6.2.2
Setting / changing the control parameters at the controller
The configuration menu is used to set the control parameters. It may only be entered when
the control is inactive (control interrupted with the STOP key).
Press the
OK
button for three seconds. The mode code in the
VALUE
display field changes
to
P
. Select the setting parameter with the
↑
UP
and
↓
DOWN
buttons
(see table below).
Only those parameters which have to be set for the selected mode are displayed. Key to the
code letters:
P Pressure settings in (<de> = set pressure unit mbar, torr or psi)
PS <de>
S
et value
Modes 1, 2
PL
<de>
Amount of pressure reduction (
L
ow pressure)
Modes 2, 6
PA <de>/min
threshold
value
for detecting the boiling point
a
utomatic mode
Modes 5, 6
t Time setting
tL
min
Time for the pressure reduction (
L
ow pressure)
Modes 2, 6
tH
min
After-running time for the cooling water (
H
2
O)
Modes 1, 2, 5, 6
C Pressure sensor calibration
CH
<de>
at normal pressure
3)
(
H
igh)
CL
<de>
at low pressure (
L
ow) (at lowest possible pressure, e.g. 10 mbar)
F Frequency reduction in %, starting from the maximum operating frequency
FA
%
For determining the boiling point smoothly. Manufacturer recommendation
= 32 %.
Depending on the solvent, this value may have to be determined and
corrected iteratively.
Modes 5, 6
3) daily air pressure / barometric pressure
After selecting the parameter, confirm it with
OK
.
This display changes to "
E
".
Set the desired value with the
↑
UP
and
↓
DOWN
keys, confirm with
OK
, and repeat with the
other required parameters if necessary.
Press the
STOP
key to leave the setting menu.
The set values are stored after the setting menu has been left.
20 113184
