VACUUBRAND CVC 3000 detect - Manual (Page 43)

page 43 of 74
Example 2:
Vacuum pump with in-line
valve and/or Vacuum-Man-
agement-System Module A:
Pumping down with interme-
diate venting
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 down begins, reaching 10 Torr/mbar within 5 minutes
(linear ramp), as ”Step” is not set.
Step 3: Vacuum holds there for 15 minutes.
Step 4: Vents to 500 Torr/mbar within 1 minute.
Step 5: Holds 500 Torr/mbar for 9 minutes.
Step 6: Pumping down, reaching 5 Torr/mbar within 10 minutes (linear
ramp), as ”Step” is not set.
Step 7: Vacuum holds there for 20 minutes.
Step 8 vents to atmospheric pressure as fast as possible and switches off
the control after one minute.
Program
No hh:mm:ss Vac Vent. Step det.
01 00:00:00 ATM ✔ ✔
02 00:05:00 10
03 00:15:00 10
04 00:01:00 500 ✔
05 00:09:00 500 ✔
06 00:10:00 5
07 00:20:00 5
08 00:01:00 ATM ✔ ✔
09 00:00:00
10 00:00:00
- - - - - - - - - - - - - Back - - - - - - - - - - - - - -
01:01:00
sure unit) and 20 Torr/mbar/hPa. The determined boiling vacuum is used
in the ”Vac Control” function as ”Set vacuum”. In case no boiling vacuum
is detected, the controller controls to 20 Torr/mbar/hPa. The following
step starts once the cumulative process time reaches the set limit (1
hour/60 minutes), even if the preset pressure (20 Torr/mbar/hPa) has not
been reached.
Step 4 vents to atmospheric pressure as fast as possible and switches off
the control after one minute.