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LCA-2
LCA-2A
LCA-2 PC
LCC-2
INSTALLATION & OPERATING GUIDE
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts
Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at
www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and
manual updates. For Technical S
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BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specified below: 2 years parts and 1 year labor. 2) Electronic circuit and/or control boards: parts and labor for 3 years. 3) Compressors on refrigeration equipment: 5 years parts and 1 year labor. 4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis: parts and labor for 3 years or 30,000 po
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CONTENTS Warranty .......................................................................... 2 Brew Temperature Lockout Feature ................................ 12 Introduction ..................................................................... 3 Programming the Dispenser Flow Rate .......................... 13 User Notices .................................................................... 4 Loading the Concentrate ................................................ 19 Electrical Requirements .
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USER NOTICES Carefully read and follow all notices on the equipment and in this manual. They were written for your protec- tion. All notices are to be kept in good condition. Replace any unreadable or damaged labels. As directed in the International Plumbing Code of the International Code Council and the Food Code Manual of the Food and Drug Administration (FDA), this equipment must be installed with adequate backflow prevention to comply with federal, state and local codes. For models inst
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ELECTRICAL REQUIREMENTS CAUTION: The dispenser must be disconnected from the power source until specified in Electrical Hook-Up. The LCA-2 and LCC-2 dispensers are supplied with a 120-volt / 15 Amp cord set and require a 2-wire, grounded, individual branch circuit rated for 120 volts AC, 15 amp, single phase, 60Hz. The mating connector must be a NEMA 5-15R. The LCA-2C and LCC-2C dispensers are supplied with a 120-volt / 20 Amp cord set and require a 2-wire, grounded, individual branch cir
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PLUMBING REQUIREMENTS The dispenser may be connected to a cold or hot water system (140°F Max.) with operating pressure between 20 and 90 psi (138 and 620 kPa) from a 1/2” or larger supply line. A shut-off valve should be installed in the line before the dispenser. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water inlet fitting is 3/8” flare. Dispensers set up to deliver to 1.8 Oz./sec. (53.2 ml/sec) per dispense tip
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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.). NOTE: The hot water FlowRate is fixed at approximately 1.7 oz/sec. and can not be adjusted. Removin
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SELECTING THE CORRECT PUMP TUBING There are two pump tube sizes available for use with this dispenser. To determine the correct tubing for you application, first determine the dispenser flow rate you intend to use, refer to Setting Dispenser Flow Rate. Then look up the recommended tube size for the mix ratio of your concentrate, refer to the Tube Selection Chart. TUBE SELECTION CHART Dispense Concentrate Ratios Rate 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 1.8 Oz/sec. 3/16” I.D.
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OPERATING CONTROLS AND INTERFACE 1a. Dispense Handles: Pull and Hold to dispense product. 1b. Dispense Switches: Push and Release to dispense product for Portion Control Models. 2. Stop Switch: Momentary switch stops all dispense functions. 3a. Hot Water Switch: Push and Hold switch to dispense hot water from the center dispense tip. 3b. Push and Release switch for Portion Control Models. 4. Alternate Portion Control Switch: Momentarily pushed to select the Alternate Portion Control Volume #2. 5
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INITIAL FILL & HEAT 1. Select Normal on the Function Selector Switch and Run on the Mode Selector Switch. 2. Confirm the water supply is on. 3. Connect the dispenser to the power source. The Red POWER LED will illuminate and water will begin flowing into the tank. The dispenser will automatically stop filling when the tank is full. The dispenser will not begin heating the water until after the tank is filled. Dispenser models with product chillers will begin to cool the cabinet at this time.
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FlavorGard™ Feature FlavorGard™ is a patented feed back control loop that monitors the mixed product and adjusts the concentrate delivery rate to maintain a consistent mix profile, i.e. Flavor Profile. The system consists of a conductance probe mounted in the final stages of the mixing chamber, a metering pump with RPM sensor and a digital controller. Once you have completed the installation of the dispenser, entered the desired mix ratio for your concentrate, dispensed several cups of the m
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Rinse Procedure: 1. Open the cabinet door and select Rinse on the Function Selector switch – close the door. 2. Place a 2 Liter (1/2 Gal) container under the Left dispense tip. 3. Activate the Left dispenser until water flow stops automatically, approximately 20 sec. 4. Repeat Steps 2 & 3 for the Right dispense tip. The Rinse LED will turn OFF, when the Rinse procedure has been satisfied for both sides. 5. Open the cabinet door and select Normal on the Function Selector switch – close the door.
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PROGRAMMING THE DISPENSER Remove the lower splash guard assembly to access the digital programming module with LCD display. Press the Down Arrow key to inter the programming menu. Use the Up and Down Arrow keys to scroll through the menu screens. Select Exit to leave the programming function and return to normal operations. NOTE 1: Flashing menu items indicate which selection is active. NOTE 2: Values shown below are the factory default values for English units. NOTE 3: Values in [X - X] are the
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MENU SCREEN ACTION DESCRIPTION LOCK FLAVOR ? Select (YES) or (EXIT) Select YES, to Lock In sensor calibration. NOTE: EXIT YES Display will return to “Find LF Target” if sensor calibration is out of range. FLAVORS LOCKED NONE Confirms that sensor calibration was in range and EXIT accepted. Scroll down to continue. Portion Control Settings for Pull and Hold Dispensers For Portion Control Dispensers (LCA-2 PC, LCA-2C PC, LCA-2A PC) go to Full Time Portion Control Sett
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MENU SCREEN ACTION DESCRIPTION TANK TEMP 180 Use the (+) or (-) buttons to Sets the water Tank temperature [120 - 200°F] (-) EXIT (+) adjust the target Temp. or [49 - 93°C] READY TEMP 175 Use the (+) or (-) buttons to Sets the hot water Ready temperature. Typically (-) EXIT (+) adjust the target Temp. set to the minimum desired dispense temp. CABINET TEMP 65 Use the (+) or (-) buttons to LCC Models Only: Sets the Chilled Cabinet target (-) EXIT (+) adjust the target Temp. tempera
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MENU SCREEN ACTION DESCRIPTION Use the (+) or (-) buttons to Enter the desired time between required Rinse RINSE TIME ? adjust Rinse Alarm delay Cycles in hours, [8 - 24 hrs.] (-) 12 Hrs (+) Select (YES) to enable Select YES to Lockout dispensing until the Rinse RINSE LOCKOUT ? Alarm has been cleared. Default is NO NO EXIT YES Select (YES) to enable Select YES to Lockout dispensing until the BIB EMPTY LOCKOUT Concentrate BIB has been replaced. Default is NO EXIT YES NO BREW LOC
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MENU SCREEN ACTION DESCRIPTION If NO - skip to next menu. Place a 50 mL (#34843.1000) The Right Pump will dispense concentrate for CAL RIGHT PUMP ? graduated cylinder under 20 seconds, then shut off automatically. Collect PULL DISPENSER the Right dispense tip, then and measure the concentrate dispensed. activate the Right Dispenser Use the (+) or (-) buttons to Enter the volume of concentrate measured from CAL RT PUMP VOL enter volume collected the Right Pump in mL(not Oz.) regard
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MENU SCREEN ACTION DESCRIPTION BIB EMPTY -> 500 Use the (+) or (-) buttons to Used to set the Conductance Threshold for the (-) EXIT (+) adjust empty BIB threshold Empty BIB warning. Default is 500 XX REFILL -> 155 Use the (+) or (-) buttons to Used to set the Conductance Threshold for the (-) EXIT (+) adjust Refill threshold Tank Refill Probe. WTR START DELAY Use the (+) or (-) buttons to Dispense Valve ON Delay. Eliminates weak mix (-) .15SEC (+) adjust delay time at the
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LOADING THE CONCENTRATE 1. Thoroughly mix concentrate by vigorously shaking the product Bag-In-Box (BIB). 2. Pull the BIB connector through the hole provided in the box and place it on the drip tray with the connector facing up. (See Fig. 1) 3. Open the dispenser door and locate the appropriate left or right BIB Adapter fitting. 4. Pull the Adapter fitting down and connect it to the BIB. (See Fig. 2) 5. Place the BIB upright in the machine, rotating it into position with the connector facing fo
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OPERATING THE PULL & HOLD DISPENSER (Models LCA-2, LCA-2C, LCA-2A, LCC-2, LCC-2C, LCC-2A) Set the Function Selector Switch to Normal and the Mode Selector Switch to Run. 1. Pull and Hold Dispense Mode (Cup at a time) a. Place cup on the cup tray beneath the desired dispensing tip. For a large container, flip the cup tray up and place the container on top of the drip tray. b. Pull and Hold the corresponding dispense handle until the cup or other container is full. c. Remove cup or container. 2.
