Bunn LCA-2 LCC-2 manual Setting Dispenser Flow Rate, Removing the restrictors

Page 6

SETTING DISPENSER FLOW RATE

The dispenser comes from the factory with flow restrictors in the mix chambers. With the restrictors in place the dispense rate is about 1.8 oz./sec (53.2 ml/sec) and is used primarily for cup at a time dispensing. The flow restrictors can be removed to increase the dispense rate to about 2.5 oz./sec (74 ml/sec) for larger volume dispensing (airpots, carafes, etc.).

Removing the restrictors:

1.Disconnect the dispenser from the AC power source.

2.Open the Product Cabinet door.

3.Remove the concentrate tube, vent line and grommet from mix chamber ports in side the product cabinet.

4.Remove the two screws that fasten mix chamber to the control panel.

5.Gently pull mix chamber away from dispenser to expose water line connection, (you may have to rotate it slightly).

6.Disconnect FlavorGard™ sensor wire and hot water tubing from the mix chamber.

7.Remove the flow restrictor from the inlet to the mix chamber.

8.Reconnect FlavorGard™ sensor wire and hot water tubing to the mix chamber.

9.Place mix chamber back into position in the dispenser, (you may have to rotate it slightly) and secure it with the two screws

10.Reposition the grommet, vent line and pump tubing onto the mix chamber ports.

Caution: Failure to properly replace and secure any of the above components may result leaks and/or cause damage to the dispenser.

If you changed the Dispenser Flow Rate, you will need to reprogram the dispenser to the new rate, see Programming the Dispenser.

CAUTION: Failure to reprogram the Dispenser Flow Rates will result in inaccurate Mix Ratios.

Reprogramming the Dispenser Flow Rate:

1.Remove the lower splash guard panel and locate the Programming module.

2.Use the Down Arrow key to enter into the programming function and scroll through the menu’s to the “CAL LEFT SIDE?” menu and select “YES”.

3.Scroll down to the “CAL LF WTR VOL” menu

4.Use the (+) & (-) keys to enter a volume of 50 Oz. (1478 mL). This will recalibrate the Left dispenser to the new rate.

5.Scroll down to the “CAL RT WTR VOL” menu

6.Use the (+) & (-) keys to enter a volume of 50 Oz. (1478 mL). This will recalibrate the Right dispenser to the new rate.

7.Select “Exit” to leave the programming menu.

Note: The default volume of 50 Oz (1478 mL), is the typical Cal Volume for a 2.5 Oz/sec Flow Rate Test, see Field Calibration of the Concentrate Pumps / Dispenser Flow Rates.

6

34766 112502

 

Page 5 Page 7
Image 6
Page 5 Page 7
Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217Contents Optional Field Wiring IntroductionUser Notices Field Wiring Terminal Block Diagram Electrical RequirementsPlumbing Requirements Initial SET-UP Electrical HOOK-UPPlumbing HOOK-UP Setting Dispenser Flow Rate Removing the restrictorsReprogramming the Dispenser Flow Rate Dispense Tube Selection ChartSelecting the Correct Pump Tubing RateOperating Controls and Interface 1513Initial Fill & Heat FlavorGard Feature Rinse Alarm Feature Brew Temperature Lockout FeatureSET RT Tube Size Programming the Dispenser351 + Exit 3/16Enter Password RT Disp VolumeLF Product Disp 0GAL RESET? RT Product Disp Ready TempAction Description Rinse Time ? 12 Hrs +CAL LF WTR Flow Pull Dispenser CAL RT WTR Flow Pull Dispenser Menu Screen ActionCAL Right Pump ? Pull Dispenser CAL Right Side ? Exit YESFactory Defaults No YES Action Description WTR Start DelayWTR Stop Delay Menu ScreenLoading the Concentrate Priming the Concentrate LinesOperating the Dispenser Cleaning & Preventative Maintenance General Cleaning and Sanitizing ProceduresReplacing the Pump Tubing Draining the HOT Water Tank Troubleshooting Front Panel LED Display MessagesTroubleshooting Dispenser Diagnostics Screen Displayed Possible CauseScreen Displayed Calibrating the Left Side Dispenser 47 ml22 ml Oz/sec 74 ml/sec w/o flow restrictor Field Calibrating the Empty BIB WarningOz/sec 53 ml/sec w/ flow restrictor Calibrating the Right Side DispenserSchematic Wiring Diagram LCA-2, LCA-2C,LCC-2,LCC-2C Schematic Wiring Diagram LCC-2A/LCA-2A

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