Advanced Instruments 4C3, User Manual

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Supervisor position while using the TEST and CALIB menus
(see Chapter 1, Section I.6).
b. With the 4C3 power turned on and “Press START to
Continue” , “Cryoscope Ready” , “Reset Probe
Configuration” or the date and time on the display, press the
TEST button. The display will change to
“Select Test Item”
.
c. At “Select Test Item” , repeatedly press the > button until the
display reads “Probe Bin Test” .
d. At
“Probe Bin Test”
, press START. The display will change
to “[Start] Ready?” .
e. At “[Start] Ready?” , pipet or measure samples of bin-setting
fluid into three clean sample tube and place them in the first
three positions of a cassette.
f. Place the cassette in the left (input) deck and press the START
button. The 4C3 will run special freezing point tests to deter-
mine the sample probe resistance and bin number.
NOTE In emergency, H
2
O may be used in place of bin-setting fluid for
this test. The bin number thus determined will be acceptable
for bin setting though the probe resistance displayed is that at
the freezing point of the H
2
O sample used, and will be different
from that for bin-setting fluid.
g. Record the sample probe resistance and bin number in the
Service Log at the end of the user’s guide; then press the STOP
button. The display will change to “Probe Bin Test” .
h. Press SETUP to enter the SETUP menu, then repeatedly press
the > button until the display reads “Set Sample Bin #” .
i. At “Set Sample Bin #” , press the START button. The dis-
play will report the current sample bin number setting.
76
The Advanced
®
Model 4C3 User’s Guide