AB2200DEENFRIT Rev. 12 / 12.2022 47/107
16.3 Write protection for the programs
The programs can be protected against unintentional modification.
The write protection can be activated or deactivated as follows when the rotor is at a standstill:
• Press and hold the key
for 8 seconds.
After 8 seconds, SOUND / BELL appears in the display.
• Press the
key. The LOCK parameter is displayed.
• Use the adjusting knob to set OFF or ON.
OFF: The programs are not write-protected.
ON: All programs are write-protected.
Write-protecting individual programs is not possible.
• Press the
key to save the setting.
If ON is set, lock is displayed briefly as confirmation.
If OFF is set, ok is displayed briefly as confirmation.
17 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
.
All parameters can be selected and altered during the centrifugation run (see Chapter “Entering centrifugation
parameter”).
You can switch-over at any time between the RPM and RCF display with the key
. 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.
If R xx n-max xxxxx is displayed, then no centrifugation run has taken place as the rotor was changed
beforehand, refer to Chapter " Rotor Identification ".
• Turn on the mains switch. Switch position .
• Load the rotor and close the centrifuge lid.
17.1 Centrifugation with pre-set time
• Adjusting time or recall a programme with pre-set time (see Chapter "Programming").
• Press the key
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
, the run-
down is effected with the selected brake step. The brake step is displayed.
During the centrifugation run, the rotor speed or the RCF value, the temperature in the centrifuging chamber (only for
centrifuge with cooling), and the remaining time are displayed.
17.2 Continuous run
• Adjusting the symbol or recall a continuous run programme (see Chapter "Programming").
• Press the key
lights up for as long as the rotor turns. The
time metering begins at 00:00.
• Press the key
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 rotor speed or the RCF value, the temperature in the centrifuging chamber (only for
centrifuge with cooling), and the elapsed time are displayed.
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