6 Operation
43
R-210/215 Operation Manual, Version F
6 .1 .3
Switching the B-491 from oil bath mode to water bath mode
To switch the heating bath from oil bath mode to
water bath mode, proceed as follows:
• Switch off the heating bath.
• Turn the adjusting knob to any position except
for 0 °C or 180 °C.
• Switch on the heating bath.
• As soon as the temperature is indicated on
the display, turn the knob to the 0 °C position
within 3 seconds. The indication “WATER” will
now appear on the display.
Fig. 6.2: Display in water bath mode
NOTE
In water bath mode, the heating bath can be operated with both water or oil.
A setting up to 95 °C is possible in water bath mode.
6 .1 .4
Selecting the set temperature
With this setting you can ensure, that the heating bath temperature cannot be changed during the
distillation process.
To carry out the setting, proceed as follows:
• Switch off the heating bath.
• Turn the adjusting knob to the 180 °C/95 °C (max) position.
• Switch on the heating bath. The set temperature setting flashes in the display.
• Turn the knob within 10 seconds to the desired set temperature, e.g. 60 °C and wait until the set
temperature setting stops flashing.
This temperature is now kept whenever the heating bath is switched on and cannot be changed with
the adjusting knob anymore.
6 .1 .5
Changing/switching off the set temperature
To change or switch off the set temperature, proceed as follows:
• Switch off the heating bath.
• Turn the adjusting knob to the 0 °C (min) position.
• Switch on the heating bath. The set temperature setting is now deleted and the temperature can
be selected via the knob again.
