6
Troubleshooting
Troubleshooting by User
Thermo Scientific
Multifuge 4KR
6-3
5. Reconnect the centrifuge once the power has been restored. Switch on the centrifuge. Press the
key to have the door locks operative again.
Troubleshooting by User
If problems occur other than those listed in this table, service technician must be contacted.
Failure Message
Problem with Centrifuge
Possible Causes and Cures
Display remains
dark.
The drive stops.
The run does not start or the centrifuge runs
down without being braked.
The centrifuge door cannot be opened.
No mains connection.
Check whether the switch is properly pressed.
Check the mains connection.
If the message appears again, inform a service technician.
Display fails briefly.
The drive stops.
Rotor stops with deceleration to standstill.
Message
E-14
appears in display.
Mains connection interrupted for some seconds.
Turn off mains switch.
Check whether the mains power cord is connected properly.
Restart the centrifuge.
If the message appears again, inform a service technician.
The centrifuge door
cannot be opened.
Centrifuge does not open.
Restart the centrifuge.
The emergency door release enables you to retrieve your samples.
If the message appears again, inform a service technician.
-
Exceptionally running noise.
Check the load placed in the rotor.
Check that the rotor cross bolts are well greased.
Restart the centrifuge.
If the message appears again, inform a service technician.
Message
bAl
appears in display.
Rotor stops with deceleration to standstill.
Imbalance detected.
Check the load placed in the rotor.
Check that the bolts of the rotor are well greased.
Restart the centrifuge.
If the message appears again, inform a service technician.
The message
rotor
appears in display.
Rotor stops with deceleration.
Set speed exceeds permissible maximum speed for the rotor. (The
same holds for RCF setting)
a.
For approx. 15 sec. the maximum permissible rotor speed or rcf
for the inserted rotor will be shown alternately by
rotor
in the
display.
Within this period, it is possible to accept this value by again
pressing the
key. The centrifugation is then continued.
b.
After 15 sec. the rotor will be decelerated. Always wait until
the rotor has come to a stop without braking.
By opening and closing the door you reset the message
rotor
.
After entering a permissible speed you can start again.
