IKA RV 10 control FLEX - Manual (Page 49)

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"User-defined Distillation" menu
"User-defined Distillation" display screen
1. Operating mode display
2. Control field for distillation procedure
3. Vacuum display (actual value)
4. Vacuum display (target value)
5. Control field for „Start/ Stop“ distillation
6. Timer display
7. Vacuum-rotation-time graph
8. Display of flow rate, differential temperature, and condenser
heat rejection rate
9. Rotary speed display (target value) and speed measurement unit
10. Error message in case of fault, otherwise status indicator
 Turn the rotary/push knob to the right/left to select „Procedure“.
 Press the rotary/push knob.
 The display will show the "Procedures" screen.
 Turn the rotary/push knob to the right/left to select a procedure.
 Press the SET button.
 The procedure selected will be used for the subsequent distilla-
tion.
Note: The vacuum-rotation-time graph is displayed for each proce-
dure. The parameters can be changed for each procedure. Please
refer to the next section for instructions on how to do this. The se-
quence used for a manual distillation process can also be saved as
a procedure. see "Manual Mode" section.
Starting automatic distillation
 Press the rotary/push knob with the “Start” or “Continue” field
selected. If the “100% distillation” or “Drying” options are active,
then the distillation will start immediately, provided that the ne-
cessary conditions are fulfilled.
When the “Volume” distillation method is used, a further screen
with additional distillation parameters will be displayed.
 Turn the rotary/push knob to the right/left to select a menu option.
 Press the rotary/push knob.
 Turn the rotary/push knob to change the value (the magnitude of the
change is dependent on the speed at which the knob is turned).
 Press the rotary/push knob again to complete the process.
Distillation
This field indicates the distillation method selected in Settings/Di-
stillation and cannot be changed..
Amount
Enter the amount, which the flask contains.
Distillate
Enter the amount, which you want to distill off.
Efficiency
Balancing requires a precise thermal efficiency to be entered.
The efficiency is dependent on a combination of factors that affect
the distillation process, so it must initially be estimated. The first
time a distillation process is carried out should therefore be used
for calibration. Following completion of the distillation process, de-
termine the quantity of distillate produced and calculate the actual
heat rejection rate according to the following formula:
η P =
η
th
. m
(calc)
m
(gem)
η
P
Actual efficiency
η
th
Estimated efficiency
m
(gem)
Measured quantity of distillate
m
(calc)
Specified (calculated) distillate quantity
For subsequent distillations, the actual calculated efficiency should
be entered; this will ensure that subsequent automatic distillations
under the same distillation and ambient conditions are performed
with sufficient precision.
End of automatic distillation
Automatic distillation will stop when the following conditions are
met::
Volume controlled
The specified quantity of distillate has been reached.
100% distillation
The measured cooling water temperature has fallen below a target
value, indicating that the solvent is fully evaporated.
The distillation can also be stopped manually:
 Press the rotary/push knob with the “Stop” display field selected..