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Error
Behavior of the
centrifuge
Message "bAl"
Rotor stops without brak-
appears in dis-
ing.
play.
Message "rotor"
Rotor decelerates with
appears in dis-
brake on.
play.
Possible cause(s) and measures to be taken
Unbalance switch actuated
1. Open the instrument by pressing "open lid" key
2. Check whether the rotor is properly loaded.
3. Check whether a broken vessel or damage to the rotor was
responsible for unbalance switch actuation.
Set speed exceeds permissible maximum speed for the rotor
in question. (The same holds for RCF setting)
A) For about 15 sec. the display shows alternately "rotor" and the
maximum permissible speed for the inserted rotor. Within this
period, it is possible to adopt this value by again pressing the
"start" key. The centrifugation is then continued.
B) Following onset of braking you must wait until the rotor has
stopped. By opening and closing the lid you reset the message
"rotor". After entering a permissible speed you can start anew.
Troubleshooting
..
49
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