Bunn LCR-3 - Manual (Page 26)

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Field Calibrating the Empty BIB Warning
The dispenser will automatically display LEFT, MIDDLE or RIGHT BIB Empty when the corresponding Concentrate
BIB is Empty. The Refill message is triggered when the Conductance Sensor reading drops below the minimum
setting. The factory set minimum is 600 and should be correct for most locations. However, the hardness of the
local water supply may affect this reading. If the Refill message doesn’t come on when the BIB is empty or the
message comes on too early and there is still concentrate left in the BIB, use the following procedure to find the
correct Empty BIB threshold.
Note: Increasing the threshold slightly will cause the Empty BIB warning to come on sooner. Lowering the
threshold will draw more concentrate from the BIB, but could allow dispensing of weak coffee.
1. Set the Function Switch to the “Rinse” position.
2. Place a 1/2 gal or larger container under the dispense tip, then activate and hold the left dispenser.
3. Dispense long enough to rinse all the concentrate out of the mix chamber and for the conductance reading
“COND” on the LCD to stabilize and stop dropping.
4. Record the nominal Conductance value displayed. (NOTE: It is typical for this value fluctuate (+/- 25) points
about the nominal value}. This is the conductance reading of the water in your area.
5. Add 100 points to Conductance value. This is the new Empty BIB threshold value for your dispenser.
6. Enter this new value into the Empty BIB Alarm threshold, see Programming the Dispenser.
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