VACUUBRAND MV 10C VARIO - Manual (Page 31)

page 31 of 51
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.: 999073 / 15/12/2009
Basic setup VACUU•LAN
After switching on
Starting and stopping the process control
The process control is not active, i. e. the controller is ready for
vacuum control, but control operation has not been started.
☞ The mode as from last operation is reactivated (after first
switching on ”vacuum control” (factory-set) is displayed).
☞ The actual pressure is displayed.
☞ Values as from last operation are reactivated (factory-set:
time for automatic shut down 60 minutes, pressure value
(condition for switching off) 100 mbar, upper set point (con-
dition for restart) 200 mbar).
☞ Press key START/STOP to start process control.
☞ If a coolant valve should be operated, the coolant valve has
to be preselected, see section ”Changing the basic setup”
➨ Starting process control: Press key START/STOP.
☞ The pump is switched on.
☞ If a coolant valve is preselected: Coolant valve opens im-
mediately, the symbol is displayed.
☞ If the pressure for switching off is achieved, the motor speed
gets reduced.
☞ The pump (and the coolant valve if applicable) is switched
off if the pressure is below the lower pressure value for longer
than the time for automatic shut down.
☞ The pump restarts automatically if the pressure gets higher
than the upper pressure value or in case of sudden gas
formation.
➨ Stopping: After pressing key START/STOP or venting the
process control stops.
☞ The pump is switched off.
☞ If a coolant valve is preselected: The coolant valve closes.
VENT
START
STOP
Attention: If pressurized
inert gas is used install an
overpressure relief valve.
Max. permitted pressure
at controller: 2 bar
absolute. Ensure that high
pressure is compatible
with the mechanical
stability of the system!
Venting
(only possible if an external venting valve is connected and configurated)
Short venting, e.g. in case of boiling retardation or if sudden
foaming occurs:
➨ Press key VENT shortly (< 2 sec.).
☞ Process control is stopped as if START/STOP was pressed.
Venting the system:
➨ Press key VENT continuously (> 2 sec.) until symbol ”vent-
ing valve” is flashing.
☞ Process control is stopped as if START/STOP was pressed.
☞ Ventilation until pressure does not change any more, i. e.
until atmospheric pressure is attained.
☞ Key START/STOP interrupts venting at any time.