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15 Centrifugation
When the centrifuge is running, according to EN / IEC 61010-2-020, no persons, dangerous substances or
objects may be within the safety margin of 300 mm around the centrifuge.
If the permissible weight difference within the rotor loading has been exceeded, the drive shuts down during
the start-up, the unbalance display lights up, and
IMBALANCE
is displayed.
A centrifugation run can be stopped at any time by pushing the key
OPEN / STOP
.
All parameters can be selected and altered during the centrifugation run (see Chapter “Programming”).
You can switch-over at any time between the RPM and RCF display with the key
RCF
. The input of the
centrifugation radius is necessary if you are working with the RCF display.
If
OPEN OEFFNEN
is displayed, a further operation of the centrifuge is only possible after opening the lid
once.
Turn on the mains switch. Switch position
.
Load the rotor and close the centrifuge lid.
15.1
Centrifugation with pre-set time
Adjusting time or recall a programme with pre-set time (see Chapter "Programming").
Press the key
START / PULSE
. The LED in the button
START / PULSE
lights up for as long as the rotor turns.
After expiration of the time or with truncation of the centrifugation run by pushing the key
OPEN / STOP
, the run-
down is effected with the selected brake step. The brake step is displayed.
During the centrifugation run the rotational speed of the rotor or the subsequently resulting RCF value, the sample
temperature (only in centrifuges with cooling) and the remaining time will be displayed. After the centrifuge has ended
its run and the rotor has come to a halt, the lid opens automatically on centrifuges without cooling.
15.2 Continuous
run
Adjusting the symbol
or recall a continuous run programme (see Chapter "Programming").
Press the key
START / PULSE
. The LED in the button
START / PULSE
lights up for as long as the rotor turns. The time
metering begins at 00:00.
Press the key
OPEN / STOP
in order to stop the centrifugation run. The run-down is effected with the selected
brake step. The brake step is displayed.
During the centrifugation run the rotational speed of the rotor or the subsequently resulting RCF value, the sample
temperature (only in centrifuges with cooling) and the expired time will be displayed. After the centrifuge has ended
its run and the rotor has come to a halt, the lid opens automatically on centrifuges without cooling.
15.3 Short-term
centrifugation
Hold down the key
START / PULSE
. The LED in the button
START / PULSE
lights up for as long as the rotor turns. The
time metering begins at 00:00.
Let go of the key
START / PULSE
again in order to stop the centrifugation run. The run-down is effected with the
selected brake step. The brake step is displayed.
During the centrifugation run the rotational speed of the rotor or the subsequently resulting RCF value, the sample
temperature (only in centrifuges with cooling) and the expired time will be displayed. After the centrifuge has ended
its run and the rotor has come to a halt, the lid opens automatically on centrifuges without cooling.
16 Emergency
Stop
Press the key
OPEN / STOP
twice.
With Emergency Stop the run-down is effected with brake step 9 (shortest run-down time). Brake step 9 is displayed.
