Field Calibration of the Concentrate Pumps / Dispenser Flow Rates

(Continued)

Dispenser Flow Rate Calibration

13.Press Down Arrow Key to display the CAL LF WTR FLO menu screen.

14.Place a 64 Oz (2000 ml) graduated container under Left Dispense Tip and Pull the Left Dispense Handle momentarily. The dispenser will dispense water for 20 seconds and then shut OFF automatically.

15.Keep the graduated container under dispense tip until all the water stops dripping.

16.Measure the volume of water collected in the graduated container.

Acceptable ranges for the volume collected

_____Dispenser Flow Rate___________

____Volume Collected____

1.8 Oz/sec (53 ml/sec) w/ flow restrictor

32

- 38

Oz, (946 - 1124 ml)

2.5 Oz/sec (74 ml/sec) w/o flow restrictor

46

- 52

Oz ,(1360 - 1538 ml)

17.If the amount collected is not within the acceptable range, empty the graduated container and repeat STEPS 14 – 16

18.If the amount collected is still not within range, inspect the dispense valves, tubing and mix chamber for lime, kinks or other obstructions.

19.When satisfied with the volume of concentrate collected, press the Down Arrow Key.

20.The CAL LF WTR VOL screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 16.

21.Press Down Arrow Key again to exit the CAL LEFT SIDE functions.

Calibrating the Right Side Dispenser

Repeat STEPS 1-21 above for the “CAL RIGHT SIDE” menus.

Field Calibrating the Empty BIB Warning

The dispenser will automatically turn on the Left or Right “REFILL LED”, see Operating Controls and Interface, when the corresponding BIB is Empty. The Refill message is triggered when the FlavorGardTM sensor reading drops below the minimum setting. The factory set minimum is 500 and should be correct for most locations. However, in some areas the hardness of the local water supply may effect 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.

Calibrating The Empty BIB Threshold

1.Remove the lower splash guard assembly to access the digital programming module with LCD display.

2.Open the cabinet door and set the Function Switch to the “Rinse” position. Close the door.

3.Place a large container under the Left dispenser tip, then pull and hold the left dispenser handle.

4.Hold the dispense handle long enough to rinse all the concentrate out of the mix chamber and for the Conductance reading to stabilize and stop dropping.

5.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.

6.Repeat steps 3, 4 & 5 for the Right dispenser.

7.Add 100 points to the larger of the Left or Right side Conductance value. This is the new Empty BIB threshold value for your dispenser.

8.Enter this new value into the Empty BIB Alarm threshold, see Programming the Dispenser.

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Bunn LCA-2 LCC-2 manual Field Calibrating the Empty BIB Warning, Oz/sec 53 ml/sec w/ flow restrictor
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LCA-2 LCC-2 specifications

The Bunn LCA-2 and LCC-2 are prominent models in the realm of commercial coffee brewing systems, known for their efficiency, reliability, and innovative technologies. Designed for coffee shops, restaurants, and catering services, these machines provide exceptional performance to meet the demands of high-volume coffee brewing.

One of the main features of both the LCA-2 and LCC-2 is their brewing capacity. The LCA-2 is capable of brewing up to 7.5 gallons of coffee per hour, while the LCC-2 can brew up to 13.5 gallons per hour. This high output makes them ideal for busy environments where quick service is essential. The machines are designed to brew directly into airpots or decanters, allowing for seamless service and easy coffee transportation.

Another standout characteristic is the precise water temperature control. The Bunn LCA-2 and LCC-2 utilize advanced brewing technology that ensures water is heated to the optimal temperature of 195°F to 205°F. This precision is crucial for maximizing flavor extraction and producing a quality cup of coffee consistently. Additionally, the machines feature an electronic brew timer, which allows users to regulate brewing time and ensure that every batch meets the desired flavor profile.

The build quality of these machines is also noteworthy. Constructed from durable stainless steel, the LCA-2 and LCC-2 are engineered to withstand the rigors of a commercial environment, assisting in maintaining consistent performance over time. Their sleek and professional design not only enhances the aesthetic appeal of any coffee service area but also facilitates easy cleaning and maintenance.

Furthermore, both models are equipped with a user-friendly control panel, providing operators with intuitive functionalities. The simple interface allows for quick adjustments, providing flexibility to customize brewing settings that suit different coffee varieties and customer preferences.

In terms of energy efficiency, the Bunn LCA-2 and LCC-2 are designed to minimize energy consumption without compromising performance. They feature a built-in tank that keeps water ready for brewing, drastically reducing the wait times between brews and ensuring that coffee is always available when needed.

In summary, the Bunn LCA-2 and LCC-2 stand out in the commercial coffee brewing segment, offering an impressive combination of high brewing capacity, precision temperature control, durable construction, and user-friendly operation. These features make them excellent choices for any establishment seeking to enhance their coffee service efficiently and effectively.
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