VACUUBRAND VNC 2 User Manual
Page 27
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999161 / 27/03/2012
Factory-set mode ”VACUU•LAN” and ”VACUU•LAN for pumps with 8 cylinders”
(VACUULAN and VCL 8cyl)
• operation of a vacuum pump using an in-line valve
• operation without in-line valve: switching of a pump according to user requirements
• control of a speed controlled pump (NT VARIO) according to requirements
• VCL 8cyl: VACUU•LAN mode for diaphragm pumps with start-up control (delay of 3 minutes
for start-up) for VACUUBRAND pumps type ME 16(C), MD 8(C), MD 12(C) and MV 10(C)
Settings in the program menu:
☞
Lower pressure value (p Set) and switch-off time (t Off): If the pressure falls below the lower
set point (”p Set”), the time meter for automatic shut down is started; additionally the pumping speed
is reduced (NT VARIO pumps only). Process control stops when the switch-off time has passed. The
vacuum pump is switched off, if the pressure stays below ”p set” for longer than ”t Off”. The
pump starts again in case of a large pressure increase. If the pressure is higher than ”p set”, then
the time meter for automatic shut down is reset.
☞
Upper pressure value (p On): If the pressure is higher than ”p On” , the pump starts again.
Only for pumps with 8 cylinders: Pumping down does not restart before three minutes have elapsed
since the shut down. This is to enable a reliable restart of pumps equipped with start-up control.
Program menu in mode VACUULAN and VCL 8cyl
VACUULAN
t Off
VACUULAN
p Set
VACUULAN
p On
t Off
10 min
p Set
25mbar
p On
150mbar
1013mbar
Start
↵
↵
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Esc