VACUUBRAND CVC 3000 detect - Manual (Page 42)

page 42 of 74
Application example
This program can be transferred to a storage space and edited.
Once the program is finished, the clock symbol starts to flash. Confirm
the end of the program by pressing START/STOP (clock symbol will dis-
appear).
Attention: If ”Autostart” is set to ”On”, the program will start again
(time will be reset to 00:00:00) after a power failure or after switch-
ing the controller off/on. Only if the end of the program (clock symbol
flashing) has been confirmed by pressing START/STOP, the program will
not start again.
Attention: If the controller is set to ”Defaults”: ”On”, all stored pro-
grams will be deleted.
Example 1:
Vacuum pump with in-line
valve (e.g., with a rotary
evaporator):
Degassing and automatic
boiling point determination
with timing
Program
No hh:mm:ss Vac Vent. Step det.
01 00:00:00 ATM ✔ ✔
02 00:10:00 300 ✔
03 01:00:00 20
04 00:01:00 ATM ✔ ✔
05 00:00:00 0
06 00:00:00 0
07 00:00:00 0
08 00:00:00 0
09 00:00:00 0
10 00:00:00 0
- - - - - - - - - - - - - Back - - - - - - - - - - - - - -
01:11:00
➜
Program step 1 should be always a definite initial state, here atmospheric
pressure (ATM). To reach this state definitely, set a tickmark at ”Vent.”
and ”Step” by pressing the selection knob.
In step 2, pumping begins, attempting to reach 300 Torr/mbar as quickly
as possible (”Step”). Vacuum holds there for 10 minutes (degassing the
solvent).
In step 3, ”det.
➜
” causes an automatic search of a boiling point in the
pressure interval between 300 Torr/mbar/hPa (depending on preset pres-