Refrigerated Centrifuge Sigma 1-16K
Refrigerated Centrifuge Sigma 1-16K IVD
6 Using the centrifuge
34 / 70
Version 10/2013, Rev. 2.21 of 08/05/2020
• sb
Translation of the original operating manual, part no. 0700302
6.3.7.3
Continuous run
During the continuous run, the runtime of the centrifuge is unlimited and
must be stopped manually. The centrifuge accelerates during the
continuous run until the set speed is reached.
• To start the continuous run, press the set key until the time unit flashes
on the display.
• Press the down-key (arrow key) until the display switches from "00:10"
to "--:--".
After 99 min 59 sec, any additional runtime will no longer be displayed, but
the centrifugation will continue.
• To stop a continuous run, press the start/stop key. The centrifugation
will end.
• Enter a runtime. The centrifugation will end after this time.
6.3.8
Temperature
The temperature in the rotor chamber is displayed in the lower third of the
centrifuge display. The display alternates between the preselected
temperature and the actual temperature. The actual temperature is marked
by the word “actual“in front of the temperature value.
Temperatures between -10 °C and + 40 °C can be selected.
• Press the set key until the temperature unit flashes on the display.
• Select the desired temperature by pressing the arrow keys.
• Confirm the selection by pressing the start/stop key.
The data will also be accepted and saved after approx. 20 seconds if no
other key is pressed within this time period.
6.3.8.1
Precooling program "Precool"
Depending on the substances to be centrifuged, it may make sense to
precool the centrifuge. The precooling prevents the cooled samples in the
uncooled centrifuge from heating up to an inadmissible temperature.
Precooling at a standstill may distort the measurement results and
subsequently cause increased wear of the mechanical components. This is
why the centrifuge has a special program that precools the centrifuge under
defined conditions:
• Press the precool key to load the precooling program. The display
shows
⅓ of the maximum rotor speed and the corresponding RCF
value, the runtime fiel
d indicates “
” (continuous run). If the set
temperature is above the actual temperature, it is limited to the actual
temperature.
NOTE
Once the precooling program is loaded, the set temperature can only be
set to values below the actual temperature. If the limits of the setting
range are reached during the setting process, the temperature display
flashes for approximately 1 second.
• Press the start key to start the precooling program.