4
Operation
Centrifugation
4-8
Heraeus Fresco 17 / 21
Thermo Scientific
3. Press the
key.
The value is taken over immediately.
Centrifugation
Once the rotor has been properly installed, the main switch has been turned on and the door has been
closed, you can start centrifuging.
Starting Centrifuge Program
Press the
key on the control panel. The centrifuge accelerates to the preset speed with the time
display active.
The run display begins to count down from the pre-selected value. If the remaining run time is less
then 1 minute, the remaining time is given in seconds.
The circulating indicators in the left display represent the spinning rotor.
In continuous operation
hd
the time display counts up. The displayed run time is first in seconds. After
one minute the displays changes every minute.
Stopping the Centrifugation Program
With preset Run Time
If the run time has been pre-selected, and all you have to do, is to wait until the centrifuge terminates
the run automatically.
As soon as the speed drops to zero, the message
END
will appear in the display. By pressing the
key, you can open the door and remove the centrifuge material.
You can also stop the centrifuging program manually at any time by pressing the
key.
Continuous Operation
If you selected continuous operation (see “Continuous operation” on page 4-6), you will have to stop
the centrifuge manually.
1. Press the
key on the control panel.
The centrifuge will be decelerated at the designated rate.
2. Press the
key to open the centrifuge door and the remove the samples when the message
END
appears in the display.
Short-term Centrifugation
For short-term centrifuging, the Heraeus Fresco 17 / 21 has a PULSE- function.
By holding down the
key, spinning will start and continue until the key is let go.
The centrifuge accelerates and brakes at maximum power. The pre-selected value is ignored.
