Bunn LCA-2 PC, LCC-2, LCA-2A manual Calibrating the Left Side Dispenser

Page 32

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 activate the Left Dispenser 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

16

- 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)

32

34766.1 010313

 

Page 31 Page 33
Image 32
Page 31 Page 33
Contents LCA-2 LCA-2A LCA-2 PC LCC-2 Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents IntroductionUser Notices 00656.000137881.0000 28181.0003 11646.0002 40054.0000 00824.0002 47624.0000Field Wiring Terminal Block Diagram Models without Master ON/OFF SwitchModels with Master ON/OFF Switch Electrical RequirementsPlumbing HOOK-UP Plumbing RequirementsElectrical HOOK-UP Installing the Drip Tray and Flip Down CUP Tray Initial SET-UPOperating Controls and Interface 1513Selecting the Correct Pump Tubing DispenseRate Oz/sec 16 I.D. TubingReprogramming the Dispenser Flow Rate Setting Dispenser Flow RateRemoving the restrictors Adjusting MIX Ratios Procedure for Adjusting the Mix Ratio to TasteAlarm Mode FlavorGard FeatureRinse Alarm Feature BIB Empty Lockout Feature Brew Temperature Lockout FeatureProgramming the Dispenser Menu Screen Action Description Tank Temp351 + Exit 3/16LF Disp Volume RT Disp VolumeMenu Screen Lock Flavor ? Exit YES Flavors Locked 0oz +Menu Screen Tank Temp Exit +Ready Temp Cabinet TempMenu Screen Rinse Time ? 12 Hrs +Action Description CAL Left Pump ? Pull DispenseMenu Screen Action CAL Right Pump ? Pull DispenserCAL RT WTR Flow Pull Dispenser CAL Right Side ? Exit YESWTR Start Delay WTR Stop DelayTest LED’S ? No Exit YES Test Switches ? Test Refill ? Exit YESInitial Fill & Heat Loading the Concentrate Priming the Concentrate LinesOperating the Pull & Hold Dispenser Filling Cambros or other large containersOperating the Preset Portion Control Dispenser Models LCA-2 PC, LCA-2C PC, LCA-2A PCCleaning & Preventative Maintenance General Cleaning and Sanitizing Procedures Daily RinsingDaily Parts Washing Weekly SanitizingPreventive Maintenance Replacing the Pump TubingDraining the HOT Water Tank Front Panel LED Display Messages TroubleshootingPower LED OFF Internal Fault Left Refill LED onTroubleshooting Dispenser Diagnostics-LCD Display BIB Not properly connected Check BIB Connector FittingsTubing kinked or blocked Check Tubing installation Possible CauseScreen Displayed Possible Cause Corresponding Temperature Sensor Evaporator temperature too highAir intake filter clogged Clean Air Filter Wiring failureCalibrating the Left Side Dispenser Field Calibrating the Hot Water Flow Rate Oz/sec 53 ml/sec w/ flow restrictorOz/sec 74 ml/sec w/o flow restrictor Calibrating the Right Side DispenserField Calibrating the Empty BIB Warning Calibrating The Empty BIB ThresholdSchematic Wiring Diagram LCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2CSchematic Wiring Diagram LCC-2A/LCA-2A/LCA-2A, PC
Related manuals
Manual 34 pages 56.59 Kb Manual 26 pages 22.61 Kb

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.
Top Page Image Contents