Check List / Trouble Shooting - Hermle Z 300 K Instruction Manual

8.2

Check list / Trouble shooting

The error message will be indicated by a certain number on the digital speed
display. At the same time "ERROR" appears on the preset display.
There is a distinction between two different kinds of errors. The digits on the
indication "speed" have the following meaning:
Error no. 1 - 49 (Forced stop)
If one of those errors occurs, the rotor will be braked from the preset speed to 0.
As soon as the rotor has stopped, the error message can be reset by opening and
closing the centrifuge lid.
Error no. 50 - 99 (Emergency stop)
If this occurs, the frequency converter will be switched off. This means that the
rotor will be stopped brakeless. To reset the error message you have to plug off
and plug in the power cord.
If the unit stops due to an error indication you should restart the unit to check if the
error occurs again.
The error numbers which are not listed in this chapter are not in use at the time of
publication and they are reserved for future use in widening the error recognition
program.
Error no.: 1 Error no.: 1 Error no.: 1
Error no.: 1 Error no.: 1
Reason:
Action:
Reason:
Action:
Error no.: 2 Error no.: 2
Error no.: 2 Error no.: 2 Error no.: 2
Reason:
Action:
Reason:
Action:
Z 300 K / July 2000
Imbalance Imbalance Imbalance
Imbalance Imbalance
Incorrect loading of the rotor
Balance your samples
Incorrect adjustment of the imbalance switch
Imbalance switch has to be readjusted (call service)
Permanent imbalance signal Permanent imbalance signal
Permanent imbalance signal Permanent imbalance signal Permanent imbalance signal
Position of the imbalance switch not correct
Imbalance switch has to be readjusted (call service)
Imbalance switch is defective
Imbalance switch has to be replaced (call service)
19 E