Vacuulan function – VACUUBRAND CVC 3000 User Manual

Page 45

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-

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).