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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.: 999073 / 15/12/2009
The process control is not active, i. e. the controller is ready for
vacuum control, but control operation has not been started.
☞
The basic setup as from last operation is reactivated (after
first switching on ”vacuum control” (factory-set) is displayed).
☞
The actual pressure is displayed.
☞
Parameters as from last operation are reactivated.
☞
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”.
Basic setup
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.).
☞
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.
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
pressure increase after switching off the pump, e. g. due to
low boiling solvents.
☞
If a coolant valve is preselected: The cooling water continu-
ous to run for another 5 minutes to allow condensation of
vapours which remain in the system. Symbol ”cooling water”
is flashing.
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!
VENT
