Hettich 4701 - ‎7.1.8 Centrifugation of substances or mixtures of substances with a density higher than 1.2 kg;dm 3‎; ‎7.2 Programming‎; ‎7.2.1 Write protection for programs‎; ‎7.2.2 Opening or loading programs‎

AB4701en_SARev.: 05 / 11.2023
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Software operation
5. Press the [PROG] button.
🡆 The set RCF value is saved.
7.1.8 Centrifugation of substances or mixtures of substances with a density higher than
1.2 kg/dm
3
The density of the substances or mixtures of substances must not exceed
1.2kg/dm³ during centrifugation at maximum speed. The 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.
7.2
Programming
7.2.1 Write protection for programs
Write protection can be enabled or disabled when the rotor is at a standstill.
1. Open the desired program.
2. Press the [PROG] button.
🡆 The RCL parameter is displayed.
3. Press and hold the [PROG] button.
🡆 The STO parameter is displayed.
‘Set Protection = 1-’ is displayed after 8 seconds.
4. Use [Rotary knob] to set ‘+’ or ‘-’ .
+ = The program is write-protected
- = The program is not write-protected
5. Press the [START] button.
🡆 The setting is stored.
7.2.2
Opening or loading programs
1. Press the [PROG] button.
🡆 The RCL parameter is displayed.