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15.1 Centrifugation
with time selection
•
Set the time or call up a program with a pre-set time (see Chapter "Entering centrifugation parameters" or
"Calling up programs").
•
Press the
START
key. The rotation indicator will appear as long as the rotor is turning.
•
When the time has expired or if the centrifugation run is interrupted by pressing the
STOP
key, run-down will take
place with the selected run-down parameters. When the rotor comes to a stop, the
symbol will flash in the
display until the lid is opened.
During the centrifugation run, the speed of the rotor or the RCF value resulting from this, the sample temperature (for
centrifuges with cooling only) and the remaining time will be displayed.
15.2 Continuous
running
•
Select the ---:-- symbol or call up a continuous running program (see Chapter "Entering centrifugation
parameters" or "Calling up programs").
•
Press the
START
key. The rotation indicator will appear as long as the rotor is turning. The time count starts
from 00:00.
•
Press the
STOP
key to stop the centrifugation run. Run-down will take place with the selected run-down
parameters. When the rotor comes to a stop, the
symbol will flash in the display until the lid is opened.
During the centrifugation run, the speed of the rotor or the RCF value resulting from this, the sample temperature (for
centrifuges with cooling only) and the time run will be displayed.
16 Changing settings during the centrifugation run.
The running time, the speed, the relative centrifugal force (RCF/RZB), the run-up and run-down parameters as well
as the temperature (for centrifuges with cooling only) can be changed while the centrifuge is running.
The parameters can only be changed one at a time and in succession.
•
Select the desired parameter and change the value using the control knob (see Chapter "Entering
centrifugation parameters").
•
Press the
START
key. The modified setting will be stored in program location "
----
" (see Chapter "Automatic
buffer"). The original program will not be overwritten.
17 Integral RCF (
∫
RCF)
The integral RCF (
∫
RCF) is a measure for the sedimentation effect (
∫
n
2
dt). This numerical value is used to compare
centrifugation runs. To interrogate the integral RCF, press and hold the
RCF
key.
18 Displaying the maximum speed of the rotor
•
Press the
n
key repeatedly until the parameter RPM is displayed and the input field is shown inversely.
•
Press the
n
key once more and hold it pressed; the maximum speed of the rotor (n-max-Rotor) will be displayed.
19 Displaying the maximum RCF of the rotor
•
Press the
RCF
key repeatedly until the parameter RCF/RZB is displayed and the input field is shown inversely.
•
Press the
RCF
key once more and hold it pressed; the maximum RCF of the rotor (RCF-max-Rotor) will be
displayed.
20 Emergency
stop
•
Press the
STOP
key twice. The
STOP
symbol will flash in the display.
In the case of an emergency stop, run-down takes place with braking step R9 (shortest run-down time). If braking
step R0 was selected, the run-down time will be longer than with braking step R9 for technical reasons.
