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Semi-Micro Osmometer K-7400S instructions, V3700
9. Troubleshooting
9.1
System messages
Any error message will be deleted simply by pressing any button. The
main screen will be displayed.
In any case the first row shows > ERROR < which is specified in the
second row.
Following messages can appear:
Error message
Cause
Remedy
FREEZE
The crystallization took place
or an error occurred before the
active triggering of the freezing
process.
see “Self-freezing of the sample”
on page 27
NO FREEZE
No sample crystallization took
place after the activation of the
stir ring wire.
see “Non-freezing of the sample”
on page 28
OUT OF RANGE
The measured value is outside the
acceptable range.
Usually a malfunction of the
thermistor. Contact the Technical
Support.
NOT CALIBRATED
No calibration points are
available.
See section „Measurement cali-
bration“ on page 22
COOLER TIMEOUT
Timeout due to too slow cooling:
>5 minutes from START
Contact the Technical Support.
MEASUREMENT
TIME OUT
Timeout due to too long measure-
ment: >5 minutes from START
Contact the Technical Support.
9.2
Self-freezing of the sample
If the sample does not super-cool but freezes spontaneously without initi-
ation, there are three possible causes:
If the following solutions do not solve the problem, the super-cooling
tem peratures are too low. The freezing temperatures in the device must
be set higher. The cooling temperature can be changed in screen 7
