4
Operation
Temperature Adaptation during Standstill
Thermo Scientific
Multifuge 4KR
4-9
Stopping the Centrifugation Program
With preset Run Time
Usually the run 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
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. Press the
key on the control panel. The centrifuge will be decelerated at
the designated rate. 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 sample.
Temperature Adaptation during Standstill
The temperature cannot be adapted until the rotor has been positively identified. For this, the
centrifuge must have accelerated to over 300 rpm. The speed display will then show
End
.
When the rotor is not recognized (door closed and
key not yet pressed, speed display
0
), the
centrifuge responds by ensuring that the sample cannot freeze regardless of the rotor being used.
Short-term Centrifugation
For short-term centrifuging, the Multifuge 4KR 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. Any rpm or RCF entered beforehand is
overridden.
Check carefully whether you have to maintain a certain speed for your application.
During the acceleration process, time is counted forwards in seconds. The reading stays displayed until
the centrifuge door is opened.
Removing the Rotor
To remove the rotor, proceed as follows:
Note
The centrifuge accelerates to maximum speed, regardless of which rotor was installed.
