Refrigerated Centrifuge Sigma 2-16KL
6 Using the centrifuge
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Version 08/2012, Rev. 1.24 of 28/04/2022
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Translation of the original operating manual, part no. 0700702
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6.3.2.14 Input lock
In order to prevent the centrifuge from being manipulated by unauthorised
persons, inputs can be disabled via the menu. Inputs via the keypad, i.e. for
starting or stopping a centrifugation run or for opening the lid, are enabled.
Activating a simple input lock:
• Position the cursor over the symbol "
" in the lower right-hand corner
of the display.
As long as the symbol is displayed, the parameters of the centrifuge cannot
be changed.
Activating a permanent input lock:
• Press the start key three times and hold for approximately 2 seconds
when pressing it for the third time.
After the activation of this function, the padlock symbol flashes. The input
lock is activated.
• Proceed in the same manner in order to deactivate the permanent input
lock.
Fig. 25: "Padlock" symbol indicating an activated input lock
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6.3.3
Program mode
A program contains all the data that are required for a centrifuge run.
Certain sedimentation results can be repeated under identical conditions.
Programs can be saved, loaded, executed, and edited when the centrifuge
is at a standstill.
A maximum of 50 programs can be stored under the numbers 1 - 50. The
rapid cooling program "Rapid Temp" does not occupy any storage location
and cannot be deleted. It is used to cool the centrifuge without any vessels.
"--" means that the values that are currently set are not a stored program.
The programs can be protected against unauthorised use, modification, or
deletion with the aid of an input lock (see chapter 6.3.2.14 - "Input lock").
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