Heidolph Vacuum Switchbox - Manual (Page 56)

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Start and discontinue cycle:
start regulation, "A1" appearing in mode display, AUTO
LED lighted.
Arrow and SET keys are locked; after having found the first boil point, "bP" is displayed.
Having programmed a decrease ramp, time remaining will alternate with "bP" display. At cycle
end, "End" is displayed, and all valves are closed.
No decrease ramp having been programmed, boil pressure once determined will be controlled until
the cycle is discontinued with "STOP".
Discontinue regulation, aerate rotary evaporator.
After having found a first boil point, you may change to manual operation whenever you want to do
so. To this end:
depress "Man" key. LED beside "Man" key is flashing.
depressing the "SET" key, "bP" boil point will be saved as
new nominal value.
7.4. Temporary
mode
Independent of program cycle, the user may step into such cycle whenever he wants ("Manual"
mode), and set a temporary nominal value, which will not be saved as operational parameter.:
by briefly hitting an arrow key, the present actual value will be set as
temporary actual value ("MAN" LED flashing). Such temporary nominal
value may be edited with the arrow keys.
Holding this key depressed, the system will be evacuated at full pumping
power. Nominal value continuously is governed by present actual
pressure.
Holding this key depressed, the aerating valve is opened 3 times, followed
by continuous opening. Nominal value continuously is governed by
present actual pressure.
Exit temporary mode with "Man" key; original nominal value is recalled.