8KS
8KBS
6 Using the centrifuge
Version 08/2012, Rev. 1.6 of 04/02/2014 • sb
47
Translation of the original operating manual
Temperature monitoring
The control system includes a temperature monitoring function. If the set
temperature difference with regard to the set value deviates from the actual
temperature difference, this function will stop the centrifuge and issue an
error message.
• Select the temperature monitoring function and confirm the selection.
• Set the desired threshold "delta T" in steps of 1°C or 1°F and confirm
the selection.
If the temperature monitoring function is active, the symbol is displayed
in the temperature field of the Standard menu.
In this case, the centrifuge can only be started if the current temperature in
the window is between the preset temperature in the Standard menu and
the threshold value "delta T".
If the temperature leaves this window during the centrifugation run, an error
message will be displayed and the centrifuge will be decelerated to a
complete standstill.
Spin-out from set speed
If this function is active, the drive will be disconnected if the actual speed is
below the set speed. As a result, the rotor decelerates and stops in a
brakeless manner.
NOTE
A spin-out (i.e. brakeless deceleration), in particular with heavy rotors and
at high speeds, can take a lot of time! (Depending on the rotor and load,
the speed will be reduced by approximately 0.5 to 1 rpm per second).
If the spin-out is active, "+0" is displayed next to the deceleration curve.
• The spin-out can be interrupted by a quick stop or by restarting the
centrifuge.
Lock
In order to prevent any unauthorised use of the centrifuge, the following
functions can be blocked:
• Saving of programs
• Changing of parameters
• Loading of programs
• Start key
Blocking a function
• Select the function that is to be blocked. The preceding functions will
also be automatically selected (example: If the Parameter function is
selected, the Save function will also be selected).
• Select the button "Activate code".
• Enter a four-digit code and confirm the entry.
The blocking is now active. A padlock symbol " " will be displayed in the
status line.
If changes are made to a blocked function, the system will ask for the code
prior to executing the change.
