Kendro SORVALL Biofuge primo, Operating Instructions Manual

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Operation
32
Entering parameters
Braking curves
The Biofuge primo offers a total of 9 centrifugation
profiles for gently centrifuging sensitive samples and
gradients. Please consult the Appendix for a graphic
representation of the acceleration and braking curves.
After switching the centrifuge on, the centrifugation
profile last entered is preselected.
By pressing the "set" key
you can switch through
the subsequent braking profiles until the desired profile
is reached.
Once the display stops flashing, the value is stored in
memory and remains unchanged until changed by a
new entry.
Switching from speed to RCF display and
vice versa
Upon turning on the centrifuge, the speed display is
the default setting.
Use the speed/RCF display switch to choose between
speed and RCF entry or display.
Selecting the speed
The centrifuge can be set to a minimum of 300 and a
maximum of 15 000 min
-1
(depending on the rotor).
You can adjust the speed in steps of 10 min
-1
. Proceed
as follows:
1. By pressing once one of the "set" keys
(for an
increase) or (for a decrease) in the "speed" sec-
tion of the control panel, you switch from actual to
setpoint values. The value last stored is displayed,
with the digit to be entered flashing (if there is no
value stored in memory, this is indicated by dashes
-----).
2. By briefly pressing the input key you can now raise
or lower the speed by
one step (10 min
-1
).
3. If you keep the key pressed, the display changes at
first slowly and after a few seconds at an acceler-
ated pace.
4. Release the key as soon as you have reached the
desired value, and fine tune if necessary by repeat-
edly pressing the key. The decimal place flashes for
a number of seconds, then changes to permanent
display. The speed is now stored.
0
1 5 0 0 0