Bunn LCA-2A, LCC-2, LCA-2 PC manual Preventive Maintenance, Replacing the Pump Tubing

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PREVENTIVE MAINTENANCE

Bunn-O-Matic®Corporation recommends that preventive maintenance be performed at regular intervals. Maintenance should be performed by a qualified service technician. For Technical Service, contact Bunn-O-Matic®Corporation at 1-800-286-6070.

NOTE: Replacement parts or service caused by failure to perform required maintenance is not covered by warranty. Replace pump hoses every 6-Months or as needed.

REPLACING THE PUMP TUBING

The pumps and tubing used in the dispenser are designed to give maximum performance and long life. However, the tubes are a wear item and must be replaced periodically. How long the tubes last is dependent on usage and properties of the concentrate. Excessive wear will reduce the output of the pumps resulting in a weak mixed beverage. Bunn-O-Matic recommends replacing the Pump Tubing a minimum of once every 6 months or sooner if warranted.

Refer to the Tube Replacement Instruction on the Cabinet door for details.

1.Rinse the pump tubing with warm tap water (Refer to steps 1 - 5 of the Weekly Sanitizing instructions) prior to removing the tubes to avoid concentrate spills.

2.Loosen the thumbscrew securing the tubing retainer plate to the pump housing. Set it and the retainer plate aside.

3.Depress the tension screw and remove it from the notch in the pump housing, releasing the spring tension on the pump band.

4.Open the compression band and gently pull the pump tube from around the pump’s rotor.

5.Inspect the pump bands for signs of wear. Replace if necessary.

6.Apply lubricant (BUNN-O-MATIC part number M2531.0001) to the new pump tubing’s rotor side.

7.Insert the tube onto the mix chamber port, then wrap the new tubing around the pump rotor, making sure that the elbow and clamps end up on the bottom side of the pump housing.

8.Depress the tension screw and insert it in the notch in the pump body, reapplying spring tension on the pump band.

9.Replace the tubing retainer plate and tighten the thumbscrew.

10.Repeat steps 1 through 9 for the other pump.

Note: Replacement Tube/Adapter Kits can be purchased from BUNN-O-MATIC.

Thumbscrew

 

 

 

 

 

 

 

 

 

 

 

 

 

Tension

 

 

 

 

2.0”

 

 

 

 

 

2.0”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw

 

Lubricate between arrows

 

 

Remove Retaining Plate Release Spring Tension

Remove Tubing

 

 

Lubricate New Tube

Tension Screw

 

Tube Clamp

 

Install New Tubing

Completed Installation

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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 RequirementsElectrical HOOK-UP Plumbing RequirementsPlumbing 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. TubingRemoving the restrictors Setting Dispenser Flow RateReprogramming the Dispenser Flow Rate Procedure for Adjusting the Mix Ratio to Taste Adjusting MIX RatiosRinse Alarm Feature FlavorGard 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 Power LED OFF TroubleshootingFront 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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