VWR avantor 521-3500 Mega Star 600 Instruction Manual page 23

Preselecting the Temperature
You can preselect temperatures between -10 °C and +40 °C.
To set the temperature, proceed as follows:
Press the TEMPERATURE arrow keys. This allows to change the set temperature using the arrow keys until
the desired temperature is displayed. Temperature will change in steps of single degrees Celsius.
The temperature cannot be adapted until the rotor has been positively identified; the speed display will then
show END. When the rotor is not recognized (centrifuge door closed and START key not yet pressed, speed
display "0"), the centrifuge ensures that the sample cannot freeze regardless of the rotor being used.
Prewarming or Precooling the Centrifuge
Ensure the rotor, buckets and accessories are correctly in place and securely attached in the chamber.
For setting the pretemp value for the centrifuge proceed as follows:
1. Press the SNOWFLAKE key in order to open the temperature selection menu.
The display shows the message "Pre-Temp".
2. Enter the desired value by pressing the TEMP arrow keys, until the desired value shows.
3. Press the START key.
4. The centrifuge motor will start and a specific speed defined by the rotor. This improves air circulation
within the chamber, resulting in improved temperature control throughout the chamber and rotor.
The rotor chamber is cooled down or heated up to the preset temperature.
5. When the set temperature is reached, the centrifuge will beep and continue to hold the temperature.
Press the STOP key to end the prewarming or precooling.
The display shows the current temperature inside the rotor chamber.
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