15
Model 161
Controls
11. The capability of this terminal to read the
thermistor probe can be checked by the
following method:
a. Remove the thermistor probe wire from the
“MIX 1” terminal.
b. Connect the “MIX 1” terminal directly to
ground (simulating a warm probe). The
MIX light will illuminate.
c. Remove the terminal connection from
ground (simulating a cold probe). The
PUMP light will illuminate.
If the lights do not react, the panel is defective.
12. Press the MIX key once.
13. The MIX OUT light is illuminated, indicating that
the control is now reading the BARREL
(freezing cylinder) probe terminal.
14. Check the BARREL (freezing cylinder) probe
(as in Step 13) by removing the wire from the
panel.
15. Press the MIX key again, and the self-test
program is terminated.
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