56 / 94
Operation
3. 5. 6. Pre-Tempering the Centrifugation Chamber
Refrigerated centrifuges allow for pre-tempering, that is pre-warming or pre-cooling,
the centrifugation chamber and the empty rotor before the centrifugation run starts.
If necessary pre-temper your samples using proper equipment. The centrifuge is not
intended to be used to pre-temper your samples.
NOTICE
Ventilated models cannot pre-temper the centrifugation chamber.
In order to pre-temp the centrifuge and the unloaded rotor proceed as follows:
1. Press the
SNOWFLAKE
button.
An indicator above the SNOWFLAKE button indicates operation at the activated pre-
temp function.
2. Enter the desired value by pressing the up or down
ARROW
buttons
under the
right display repeatedly, until the desired value shows. You increase or decrease the
temperature in steps of 1 °C.
3. Press
START
.
The rotor will be operated at optimal speed.
NOTICE
When you press a different key than
START
you will quit the pre-temp function.
NOTICE
If you wish to change the temperature of your samples, please consider that the time
required for temperature adjustment is prolonged. For critical applications you should take other
precautions to ensure that the desired temperature is actually reached and maintained.
3. 5. 7. Changing the Settings During the Run
You can change the settings during the run as follows:
1. Press one of the three
ARROW
button pairs
in the control panel.
The current value will switch into the pre-selecting value mode.
