88
The Advanced
®
Model 4C3 User’s Guide
“Sample Did
Not Freeze”;
“Sample
Freeze Error”
Freeze “buzz” occurred
1. Was the sample tube
left empty?
2. Is the freezing point
of the sample beyond
the range of the instru-
ment (see Appendix
B)?
3. Does the sample con-
tain many small bub-
bles or froth?
4. Is the sample very vis-
cous?
5. Is the probe configura-
tion correct?
a. Test another aliquot of
that sample in a clean
sample tube.
b. Try testing samples
known to be within the
range of the instrument.
c. Make sure samples
contain no bubbles or
froth before testing.
Decrease the sample
stir amplitude, if neces-
sary, to avoid generat-
ing bubbles before the
freeze buzz occurs.
d. The 4C3 is not
designed to test thick or
very viscous samples.
e. Check/correct the probe
bin numbers.
f. Test another aliquot
of that sample in a
clean sample tube (see
Chapter 2, Sections D
and G).
Symptom
Check
Suggested Action
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