Bunn LCC-2, LCA-2A Field Calibrating the Hot Water Flow Rate, Oz/sec 53 ml/sec w/ flow restrictor

Page 33

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 Hot Water Flow Rate

1.Locate the programming module and use the Arrow Down key to scroll through the LCD screen until “CAL HOT WTR FLO?” appears.

2.Place a 64 Oz (2000 ml) graduated container under Hot Water Tip and press the hot water switch. The unit will dispense Hot Water for 20 seconds and then shut OFF automatically. Keep the graduated container under the dispense tip until all the water stops dripping.

3.Measure the volume of water collected in the graduated container. The acceptable range for the volume collected is 32 - 38 Oz. (946 - 1124 ml).

4.If the amount collected is not within the acceptable range, empty the container and repeat steps 2 & 3.

5.If the amount collected is still not within range, inspect the hot water valve, tubing and fittings for lime, kinks, or other obstructions.

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

7.The “CAL HOT WTR VOL” screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the ammount measured in step 3.

8.Press Down Arrow Key again to exit this function.

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34766.1 010313

 

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Contents Phone 217 529-6601 FAX 217 LCA-2 LCA-2A LCA-2 PC LCC-2BUNN-O-MATIC Commercial Product Warranty Introduction Contents00656.0001 User Notices37881.0000 28181.0003 11646.0002 40054.0000 00824.0002 47624.0000Models without Master ON/OFF Switch Field Wiring Terminal Block DiagramModels with Master ON/OFF Switch Electrical RequirementsPlumbing Requirements Electrical HOOK-UPPlumbing HOOK-UP Initial SET-UP Installing the Drip Tray and Flip Down CUP Tray1513 Operating Controls and InterfaceDispense Selecting the Correct Pump TubingRate Oz/sec 16 I.D. TubingSetting Dispenser Flow Rate Removing the restrictorsReprogramming the Dispenser Flow Rate Procedure for Adjusting the Mix Ratio to Taste Adjusting MIX RatiosFlavorGard Feature Rinse Alarm FeatureAlarm Mode Brew Temperature Lockout Feature BIB Empty Lockout FeatureMenu Screen Action Description Tank Temp Programming the Dispenser351 + Exit 3/16RT Disp Volume LF Disp VolumeMenu Screen Lock Flavor ? Exit YES Flavors Locked 0oz +Exit + Menu Screen Tank TempReady Temp Cabinet TempRinse Time ? 12 Hrs + Menu ScreenAction Description CAL Left Pump ? Pull DispenseCAL Right Pump ? Pull Dispenser Menu Screen ActionCAL RT WTR Flow Pull Dispenser CAL Right Side ? Exit YESWTR Stop Delay WTR Start DelayTest LED’S ? No Exit YES Test Switches ? Test Refill ? Exit YESInitial Fill & Heat Priming the Concentrate Lines Loading the ConcentrateFilling Cambros or other large containers Operating the Pull & Hold DispenserModels LCA-2 PC, LCA-2C PC, LCA-2A PC Operating the Preset Portion Control DispenserGeneral Cleaning and Sanitizing Procedures Daily Rinsing Cleaning & Preventative MaintenanceDaily Parts Washing Weekly SanitizingReplacing the Pump Tubing Preventive MaintenanceDraining the HOT Water Tank Troubleshooting Power LED OFFFront Panel LED Display Messages Left Refill LED on Internal FaultBIB Not properly connected Check BIB Connector Fittings Troubleshooting Dispenser Diagnostics-LCD DisplayTubing kinked or blocked Check Tubing installation Possible CauseScreen Displayed Possible Cause Evaporator temperature too high Corresponding Temperature SensorAir intake filter clogged Clean Air Filter Wiring failureCalibrating the Left Side Dispenser Oz/sec 53 ml/sec w/ flow restrictor Field Calibrating the Hot Water Flow RateOz/sec 74 ml/sec w/o flow restrictor Calibrating the Right Side DispenserCalibrating The Empty BIB Threshold Field Calibrating the Empty BIB WarningLCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C Schematic Wiring DiagramSchematic Wiring Diagram LCC-2A/LCA-2A/LCA-2A, PC
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LCA-2 PC, LCA-2A, LCC-2 specifications

The Bunn LCC-2, LCA-2 PC, and LCA-2A are high-performance commercial coffee brewers designed to meet the demands of busy coffee shops, restaurants, and other food service establishments. These machines are known for their efficiency, durability, and advanced brewing technologies, making them popular choices in the industry.

Starting with the Bunn LCC-2, this brewer is recognized for its compact design and ease of use. It has a brewing capacity of up to 3.8 gallons per hour, ensuring that coffee is ready quickly during peak hours. The LCC-2 uses a pour-over brewing method, which means that water is heated to the ideal brewing temperature and then poured over coffee grounds for optimal extraction. One of its standout features is the digital temperature control, which allows operators to adjust brewing temperatures easily for different coffee types. Additionally, the Bunn LCC-2 features a stainless steel construction that enhances durability and provides a sleek look for any commercial kitchen.

Moving on to the Bunn LCA-2 PC, this model includes programmable capabilities, making it perfect for establishments that require consistency and convenience. The LCA-2 PC allows users to preset brewing schedules and customize brew cycles, ensuring that each pot of coffee meets specific flavor profiles. This model is designed with a large-capacity brewing system that can produce up to 7.5 gallons of coffee per hour, making it an ideal choice for high-demand environments. It also boasts a built-in hot water faucet, which provides instant hot water for other beverages or culinary applications. The LCA-2 PC's advanced brewing automation helps maintain optimal brew quality while minimizing waste.

Lastly, the Bunn LCA-2A is an advanced version that focuses on automation and efficiency. This brewer features a state-of-the-art digital brew timer, which allows precise control over brew times, leading to consistent flavor extraction. The LCA-2A also integrates with Bunn’s patented brewWISE technology, which tracks brew recipes and monitors performance. The intuitive interface allows for easy operation, even for staff who may be less experienced with coffee brewing. With a capacity of up to 4 gallons per hour and a durable stainless steel frame, the LCA-2A ensures longevity while delivering exceptional coffee.

In summary, the Bunn LCC-2, LCA-2 PC, and LCA-2A represent the pinnacle of commercial coffee brewing technology. Their unique features, including programmable settings, large brewing capacities, and durable constructions, cater to the diverse needs of the food service industry. Each model emphasizes convenience, flexibility, and quality, making them invaluable assets in any professional coffee environment.
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