Field Calibration of the Concentrate Pumps / Dispenser Flow Rates

The factory set Default Values for the Pump & Dispenser Flow Rates are very accurate and typically do not need to be field calibrated. However, if the mix ratio accuracy is ever in question, this procedure can be used to recalibrate the unit in the field.

Equipment Required:

50 to 100 ml graduated cylinder, with 1 ml graduations.

64 Oz (2000 ml) graduated container.

Remove the lower splash guard assembly to access prior to starting this procedure

NOTE: You can calibrate either the Concentrate Pump or the Dispenser Flow Rate independently. Simply scroll through the menu screen to the desired section and perform only those steps.

Calibrating the Left Side Dispenser

Concentrate Pump Calibration

1.Select PRIME on the Function Selector Switch. (refer to Priming the Concentrate Lines).

2.Place a container under the Left Dispense Tip and prime the concentrate lines until a steady stream of concentrate comes out the tip (approximately 10 seconds).

3.Stop the Priming and allow the tip to stop dripping. Discard the concentrate collected.

4.Select NORMAL on the Function Selector Switch.

5.Locate the programming module and use the Arrow Down key to scroll through LCD screens until CAL LEFT SIDE appears and press the YES button.

6.The CAL LEFT PUMP menu screen will be displayed. Place a 50 ml graduated cylinder under Left Dispense Tip and pull Left Dispense Handle momentarily. The dispenser will run the Left Concentrate Pump for 20 seconds and then shut OFF automatically.

7.Keep the graduated cylinder under dispense tip until all the concentrate has dripped out.

8.Measure the volume of concentrate collected in the graduated cylinder.

Acceptable ranges for the volume collected

Tubing Size

Volume Collected

3/16" tubing

40

- 47 ml.

1/8" tubing

17

- 22 ml

9.If the amount collected is not within the acceptable range, empty the graduated cylinder and repeat STEPS 6 – 8.

10.If the amount collected is still not within range, replace the pump tubing with a new Tube Kit, (refer to the Tube Replacement Instructions).

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

12.The CAL LF PUMP VOL menu screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 8.

(Continued Next Page)

25

34766 112502

 

Page 24 Page 26
Page 25
Image 25
Bunn LCA-2 LCC-2 manual Calibrating the Left Side Dispenser, 47 ml, 22 ml
Page 24 Page 26

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.
Top Page Image Contents