Laboratory centrifuge Sigma 2-7, Sigma 2-7 Cyto
Laboratory centrifuge Sigma 2-7 IVD
6 Using the centrifuge
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Version 07/2015, Rev. 1.12 of 16/07/2019
• sb
Translation of the original operating manual, part no. 0702802
6.3.9
Softstart and softstop function
The softstart function is used to extend the acceleration time, whereas the
softstop function is used to extend the deceleration time. The current
combination is shown on the display.
• To activate the softstart and softstop functions, press the set key
repeatedly until "Soft-stop/start" flashes in the upper left part of the
display.
• Press the arrow keys until "Soft-stop/start on" is displayed. The softstart
and softstop functions are now activated.
• Press the arrow key until "Soft stop on" is displayed. Only the softstop
function will be active and the centrifuge will start at normal speed.
• Press the arrow key until "Soft off" is displayed. The softstart and
softstop functions are now deactivated.
The data will be accepted immediately and saved after approx. 20 seconds.
You can also change the settings as described above during a
centrifugation run.
6.3.10 Automatic lid opening function
The automatic lid opening function ensures that the lid opens when the
rotor has stopped. In the factory settings, the automatic lid opening function
is activated.
• To deactivate the automatic lid opening function, press and hold the Set
button.
• Press the upper arrow button 5 times and then release the Set button.
The automatic lid opening function is deactivated.
• Proceed in the same manner in order to activate the automatic lid
opening function.
6.3.11 Start delay ("Clotting time")
This function has been specially developed for laboraties that use serum
tubes with a so-called clot activator. For this application, the samples must
be at rest for a defined time prior to the actual centrifugation. This time is
referred to as the "clotting time".
The start delay function can be used to start the entire centrifugation
process, including the clotting time, following the insertion of the samples
without any further inputs.
After the programmed delay has elapsed, the centrifuge will start
automatically with the preset parameters.
In the factory settings, this function is deactivated.
• To deactivate the function, press and hold the Set button.
• Press the upper arrow button 4 times and then release the Set button.
• Select the desired delay by way of the arrow buttons.
• Press the Set button in order to confirm the selection.
