Heidolph Hei-VAP Advantage - Manual (Page 54)

Operation of the Hei-VAP Value
46 Hei-VAP Value, Hei-VAP Advantage
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6.2 Setting the heating bath temperature
 The control dial for the heating bath is turned to the counterclockwise or left position
to ensure it is turned off.
 The heating bath is filled with a heat transfer liquid.
 The rotary evaporator is now operational and switched on at the power switch.
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 heating bath has a dry run protection. This must be reset
manually after being triggered (see Errors and Troubleshooting).
In order to achieve a high Distillation rate (dT), the temperature
difference between the heating bath and the steam temperature
must equal at least 20 K.
General: Doubling the temperature difference results in doubling
the Distillation rate (dT).
For rated temperatures above 100 °C, only suitable oil or polyeth-
ylene glycol (order No.: 515-31000-00; 5L; max. temp.: 240 °C)
may be used as heat transfer medium (observe safety data
sheets, see chapter 4.4.2).
1. Switch on the heating bath by pressing the heating bath (Figure 6 –1 (2) pushbutton
on the control panel.
2. Set the required temperature with the heating bath (Figure 6 –1 (3) control knob
according to scale on the panel.
The control light of the heating bath (Figure 6 –1 (1) shows that the heating bath is in
the heating phase. It must be illuminated in green to show active heating of bath.
6.3 Error messages
The error messages in this unit's flashing codes are only displayed in the event of a
malfunction. The flashing codes and their troubleshooting are explained in chapter 8,
"Errors and Troubleshooting
“.
Heating bath