VACUUBRAND VNC 1 - Manual (Page 22)

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.: 999118 / 16/12/2009
page 22 of 35
Factory-set mode ”VACUU•LAN” and ”VACUU•LAN for pumps with 8 cylinders
(VACUULAN and VCL 8cyl)
• operation of a vacuum pump using an isolation valve
• operation without isolation valve: operation of a pump according to user requirements
• control of a speed controlled pump (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), see also
”Technical data”.
Settings in the program menu:
☞ Lower pressure value (p Set) and switch-off time (t Off): If the pressure is below the lower set
point (p Set), the time meter for automatic shut down is started; additionally the pumping speed is
reduced (VARIO pumps only). If the pressure is higher than p set then the time meter for automatic
shut down is reset. The process control stops when the switch-off time has passed. The vacuum pump
is switched off if the pressure falls below p set longer than t Off. The pump starts again in case of
great pressure increase.
☞ Upper pressure value (p On): If the pressure is higher than p On , the pump starts again.
Only for pumps wit 8 cylinders: The pumping down does not restart before 3 minutes have elapsed
since the shut down to enable a reliable restart of pumps equipped with start-up control.
☞ Time of process (tProcess): Check if time delay is reached. If time delay is not reached during
tProcess an error message appears. Check parameters and / or installation.
Program menu in mode VACUULAN and VCL 8cyl
VACUULAN
t Off
VACUULAN
p Set
VACUULAN
p On
VACUULAN
tProcess
t Off
15 min
p Set
25mbar
p On
150mbar
tProcess
99 h
1013mbar
Start
Esc
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