Thermo Scientific Sorvall ST 8FR Centrifuge
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Imbalance Indicator
The centrifuge is fitted with an imbalance detector, to ensure safety� If an imbalance is detected an
error message “Imbalance load” will be displayed�
Imbalance at high speed may indicate a tube breakage or leak or rotor crash� Therefore additional
care should be taken depending on the samples loaded�
The run will terminate�
Once the run is stopped, the rotor and load should be checked, ensuring that all buckets are greased
and can swing free and that the tubes are balanced by following the rotor instruction manual� For
information on troubleshooting, see
Stopping the Centrifugation
With Set Time
If the run time is preset, the centrifuge will run at the selected speed until the desired run time is
reached� It will then automatically decelerate and stop� Once stopped “RUN COMPLETED” will be
displayed and if selected the display will flash and the centrifuge will beep�
Access to the chamber and rotor can be gained by pressing the OPEN key� If selected the door will
open automatically�
You can also stop the centrifuging program manually at any time by pressing the STOP key� The
message “RUN STOPPED BY USER” will be displayed�
Continuous Operation
If you selected continuous operation (
„Continuous Operation“ on page 29
), you will have to stop
the centrifugation manually� Press the STOP key on the control panel�
The centrifuge will decelerated at the set rate� The message “RUN COMPLETED” will be displayed�
After pressing the OPEN key, the centrifuge door will open and you can remove the centrifuged
samples�
