Heidolph Hei-VAP Precision - Manual (Page 34)

Operation Operation
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Setting the rotation speed
(actual value displays of all modes)
The unit is switched on.
The rotation is switched off (pushbutton Rotation start/stop).
Actual value display
1. Select the entry “rotation” by turning the Hei-GUIDE (6) and call up the selected
entry to be changed by pressing the Hei-GUIDE (6) again.
2. Turn the rotary pushbutton controller Hei-GUIDE (6) to set the desired rotation speed.
The rotation speed is readjusted synchronously as an active rotation.
3. Pressing it again confirms the change. The entry is exited after 10 seconds, in order
to rule out accidental adjustments.
4. Activate the Rotation start/stop (5) pushbutton to start the rotation.
The set speed appears on the screen.
The range can be set from 10 - 280 [rpm] in 1 [rpm] increments.
100 [rpm] are set as default when shipping from the factory.
Setting the heating bath temperature
(Actual value displays of all modes)
The heating bath is filled with heat transfer liquid.
The rotary evaporator is operational and switched on at the power switch of the
base unit (Figure 5-1 (1)).
WARNING Hot surfaces during the operation of the heating bath!
Burns.
Do not touch the interior and the upper edge of the heating bath, the
evaporator flask and the heating bath liquid.
Wear suitable heat protection gloves when changing the evaporator
flask.
CAUTION Overheated heating bath!
Property damage and visual changes of the heating bath.
Never operate the heating bath without liquid.
The range can be set from 20 - max. temperature of the heating bath
[°C] in 0.5 [°C] increments. 20 C [°C] are set as default when shipping
from the factory.
Only use suitable oil as heat carrier for target temperatures above 100
°C (observe safety data sheets, refer to chapter “Appendix” and chapter
“Set-up and start-up” – “Start-up”
1. Switch on the heating bath by pressing the pushbutton heating bath on/off (3).
The illuminated yellow control ring of pushbutton heating bath on/off (3) shows that
the heating bath is activated. An icon [heat waves] in the display shows that the bath
is in the heating phase (current flows into the heating coils of the bath).
2. Select the entry “heating bath” by turning the Hei-GUIDE (6) and call up the select-ed
entry to be changed by pressing the Hei-GUIDE (6) again.
3. Pressing it again confirms the change.
Calculating the vapor temperature (with
an optional vapor temperature sensor)
The vapor temperature is displayed on the screen of the control panel when the vapor
temperature sensor is connected.
If a vapor temperature sensor is connected during the operation:
Switch the unit off and on to activate the program part.
Process modes
The Hei-VAP Precision forms a unit with the control panel, the vacuum box and the
vacuum valve, in which the vacuum is controlled by opening and closing a valve.
The vacuum valve is not required when using a speed-controlled pump.
The ventilation valve in the vacuum box is always open when the
vacuum control is switched off.