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Operation
Centrifuge 5424/5424 R
English (EN)
5.5.2 Temperature display
5.5.3 Temperature monitoring
After the set temperature has been reached the centrifuge responds as follows to temperature fluctuations
during centrifugation:
5.5.4 FastTemp
This function can be used to start a temperature control run directly without samples with a rotor and
temperature-specific speed in order to quickly adjust the rotor chamber up to the set target temperature.
Prerequisites
• The centrifuge is switched on.
• Rotor and rotor lid are correctly mounted.
• The centrifuge lid is closed.
• The temperature and g-force (rcf) or speed (rpm) are set for the subsequent centrifugation (see
Centrifuging on p. 30).
1. Press the fast temp key.
The display shows FT as well as the current temperature and g-force (rcf) or speed (rpm).
The cooling time from room temperature () to 4 °C takes approx. 8 min.
The temperature control cycle ends automatically when the target temperature has been reached. A
periodic signal tone sounds.
2. Press the start/stop key to end the temperature control run early.
After the temperature control run is complete the centrifuge keeps the rotor chamber, with the centrifuge
lid closed, at the set temperature, if the temperature is below the ambient temperature. Irrespective of the
target temperature, however, this continuous cooling does not go below 4°C to prevent the rotor chamber
from freezing.
5.5.5 Continuous cooling
When the rotor is stopped the rotor chamber is kept at the target temperature when the following
prerequisites are met:
• The centrifuge is switched on.
• The centrifuge lid is closed.
• The target temperature is below the ambient temperature.
If the rotor is stopped: Set temperature
During centrifugation: Actual temperature
Deviation from the target value Action
ΔT > 3°C Temperature display flashes.
ΔT > 5°C Display Error 18. Centrifugation is stopped
automatically.
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