Programming; Write Protection For Programs - Hettich Rotina 420 R Mode D'emploi

Software operation
7.1.8 Centrifugation of substances or mixtures of substances with a density higher than
1.2 kg/dm
7.2

Programming

7.2.1

Write protection for programs

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4. Use the
5. Press the
�� The set RCF value is saved.
3
The density of the substances or mixtures of substances must not exceed
1.2 kg/dm³ during centrifugation at maximum speed. The maximum permis-
sible speed must be reduced for substances or substance mixtures with a
higher density. The permissible speed can be calculated using the following
formula:
For example: Maximum speed 4000 RPM, density 1.6 kg/dm³
If, in exceptional cases, the maximum load indicated on the bucket is
exceeded, the speed must also be reduced. The permissible speed can
be calculated using the following formula:
For example: Maximum speed 4000 RPM, maximum load 300 g, actual
load 350 g
Please contact the manufacturer if you are not sure.
Write protection can be enabled or disabled when the rotor is at a standstill.
1. Open the desired program.
2. Press the
�� The RCL parameter is displayed.
3. Press and hold the
�� The STO parameter is displayed.
'Set Protection = 1-' is displayed after 8 seconds.
[Rotary knob] to set '+' or '-' .
4. Use
+ = The program is write-protected
- = The program is not write-protected
5. Press the
�� The setting is stored.
Rev.: 19 / 02.2025
[Rotary knob] to set the desired 'RCF' .
[PROG] button.
[PROG] button.
[PROG] button.
[START] button.
AB4701en