VACUUBRAND CVC 3000 - Manual (Page 45)

page 45 of 80
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.
VACUULAN function
➨
Optimizes vacuum control for vacuum networks
(e.g., VACUUBRAND VACUU•LAN)
• Permits on-demand operation of a speed-controlled pump
(NT VARIO/VARIO-B)
• Operation of a vacuum pump via in-line valve
• Operation of a vacuum pump without in-line valve via VMS (Vac-
uum Management System), see “Accessories”, pg. 69.
Preselections
+
Use the selection knob to select the parameters.
+
Set vacuum (the lower switch-off value): If the pressure drops below
the ”Set vacuum”, a time-meter starts to run and the motor speed is
reduced (only with NT VARIO / VARIO-B pumps). When the pressure
exceeds the ”Set vacuum” pressure again, the time meter is reset. If
the ”Set vacuum” is not reached within 100 hours, the controller sig-
nals an error.
The ”Set vacuum” is adjustable in the range of 1-795 Torr (1-1060
mbar).