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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.: 999100 / 06/05/2008
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.
☞
Press key START/STOP to start process control.
☞
A coolant valve has to be preselected, see section ” Setting
the mode”.
Mode vacuum control
After switching on
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.).
☞
Pumping is interrupted, the process control is stopped.
Venting the system:
➨
Press key VENT continuously (> 2 sec.) until symbol vent-
ing valve is flushing.
☞
Pumping is interrupted, the process control is stopped.
☞
Ventilation until pressure does not change any more, i. e.
until atmospheric pressure is attained.
☞
Key STOP interrupts venting at any time.
START
STOP
Starting and stopping the process control
➨
Starting
process control: Press key START/STOP.
☞
If a coolant valve is preselected: Coolant valve opens im-
mediately, the symbol is displayed.
➨
Stopping
process control: Press key START/STOP.
☞
The pump is switched off.
☞
Attention: Adopt suitable measures if there is a possible pres-
sure increase after switching off the pump, e. g. due to low
boiling solvents.
☞
If a coolant valve is preselected: The coolant valve continu-
ous to run for additional 5 minutes to allow condensation of
vapours which remain in the system. Symbol “coolant” is
flashing.
Attention: If pressurized
inert gas is used install an
overpressure relief valve.
Ensure that high pressure
is compatible with the
mechanical stability of the
system!
VENT
