4
Operation
Centrifugation
Thermo Scientific
ST16 / 16R
4-7
Centrifugation
Once the rotor has been properly installed, the main switch has been turned on and the lid has been
closed, you can start centrifuging.
Starting centrifuge program
Press the START key
on the control panel. The centrifuge accelerates to the pre-set speed with the
time display active.
If the speed setting is higher than the maximum permissible speed or RCF-value for the particular
rotor, then the display will show the message max. 4,700 rpm once the centrifuge has been started.
Within 15 seconds you can apply this value by pressing the START key
again, and the centrifuging
program will continue. Otherwise the centrifuge will stop and you will have to enter a valid number.
You cannot open the lid as long as the centrifuge is running.
Imbalance indicator
If a load is imbalanced, this will be indicated at speed higher than approx. 300 rpm by the message
"Imbalanced load".
The run will terminate.
Check the loading and start the centrifuge once again. See the information on proper loading in the
rotor instruction manual. For information on troubleshooting, see section
“Troubleshooting by User”
on
page 7-3
.
Stopping the centrifugation program
With preset running time
Usually the running time is preset and you only have to wait until the centrifuge stops automatically
when the preset time limit expires.
As soon as the speed drops to zero, the message END will appear in the display. By pressing the OPEN
key
, you can open the lid and remove the centrifuge material.
You can also stop the centrifuging program manually at any time by pressing the STOP key
.
Continuous operation
If you selected continuous operation (see
“Continuous operation”
on
page 4-5
), you will have to stop
the centrifuge manually. Press the STOP key
on the control panel. The centrifuge will be
decelerated at the designated rate. The message "END" will illuminate, and after pressing the key
OPEN
, the lid will open and you can remove the centrifuged material.
