Bunn LCR-3 service manual Field Calibrating the Empty BIB Warning

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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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Contents LCR-3 HV Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents IntroductionUser Notices Moving PartsElectrical Requirements Field Wiring Terminal Block Diagram Plumbing RequirementsPlumbing HOOK-UP Initial SET-UPElectrical HOOK-UP Leveling the DispenserDrip Tray Installation Operating Controls and Interface Initial Fill & Heat Alarm Level Alarm Mode Rinse Alarm FeatureRinse Procedure Energy Saver Mode BIB Empty Lockout FeatureBrew Temperature Lockout Feature Optional 2- Product OperationProgramming the Dispenser Programming Saver Tank Temp No Exit Action BibEMPTY LockoutHRS + CAL HI WTR VOL LCD Display Actiondescription CAL Left Pump ? LeftCAL Middle Pump ? CAL MID Pump VOL LCD Display Xxoverflow WTR Start DelayWTR Stop Delay Test Refill ? Exit YES Test Heater ?Loading the Concentrate Priming the Concentrate LinesFilling Cambros or Other Large Containers Operating the DispenserTo Dispense Hot Water Weekly Sanitizing Cleaning & Preventative MaintenancePreventive Maintenance Weekly Refrigeration AIR FilterReplacing the Pump Tubing Draining the HOT Water Tank No Display TroubleshootingPossible Cause Troubleshooting Procedures Water TOO LOWHeating Check for BAD ConnectionsScreen Displayed Possible Cause Calibrating the Left Concentrate Pump Dispenser Flow Rate CalibrationField Calibrating the Empty BIB Warning Schematic Wiring Diagram
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