Bunn LCR-2 Installation And Operating Manual
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Bunn LCR-2 Installation And Operating Manual

Bunn coffee maker model number: lrc-2, lrc-2 pc
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INSTALLATION & OPERATING GUIDE
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 Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.
36026.0000T 06/11 ©2003 Bunn-O-Matic Corporation
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601
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FAX: (217) 529-6644
LCR-2
LCR-2A
LCR-2 PC
LCR-2A PC

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Summary of Contents for Bunn LCR-2

  • Page 1 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 Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.

  • Page 2: Warranty

    SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND. In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.

  • Page 3: Table Of Contents

    Follow the Concentrate Manufacturer’s Storage and Shelf Life recommendations. Product Flavor Profile is extended with refrigerated product storage cabinet featured in the LCR-2 and LCR-2 PC. This dispenser is designed to operate when ambient temperatures are from 32°F (0°C) minimum to 104°F (40°C) maximum.

  • Page 4: User Notices

    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. 00986.0002 To reduce the risk of electric shock, do not remove or open cover.

  • Page 5: Electrical Requirements

    CAUTION: The dispenser must remain disconnected from power source until specified in Electrical Hook-Up. The LCR-2 dispenser is 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.

  • Page 6: Plumbing Requirements

    Bunn-O-Matic does not recommend the use of a saddle valve to install the dispenser. The size and shape of the hole made in the supply line by this type of device may restrict water flow.

  • Page 7: Initial Set-Up

    NOTE: The LCR-2 dispenser weighs approximately 100 lbs. (45 kg). If necessary, use more than one person when lifting or moving the dispenser. 1. Cut the two straps and remove the box and foam packing. 2. Locate and remove the information packets and tube kits from top of packaging and set aside.

  • Page 8: 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.).

  • Page 9: Selecting The Correct Pump Tubing

    2. Depress the tension screw and remove it from the notch in the pump body, releasing the spring tension on the pump band. 3. Apply lubricant (BUNN-O-MATIC part number M2531.0001) to the new pump tubing. 4. Insert the tubing onto the mix chamber port and wrap the tubing around the pump rotor, making sure that the elbow and clamps end up on the bottom side of the pump body.

  • Page 10: Operating Controls & Interface

    14. Programming Keypad: Used in conjunction with the LCD display to program and calibrate the dispenser to customer specific requirements. (Located behind the splash guard panel) 15. LCD Display: Displays programming menus and fault messages. (Located behind the splash guard panel) BUNN ICED COFFEE AMBIENT UNIT...

  • Page 11: 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.

  • Page 12: 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 mixed product, and are satisfied with the Flavor and Strength being delivered, simply enable FlavorGard™, (refer to FlavorGard™...

  • Page 13: Bib Empty Lockout Feature

    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 dispense until water flow stops automatically, approximately 20 sec. 4.

  • Page 14: 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.
  • Page 15 FLAVORS LOCKED EXIT Portion Control Settings for Pull & Hold Dispensers For Portion Control Dispensers (LCR-2 PC, LCR-2C PC, and LCR-2A PC) go to Full Time Portion Control Settings LF DISP VOLUME Use the (+) or (-) buttons to (-) 4.0oz (+)
  • Page 16 MENU SCREEN TANK TEMP 180 Use the (+) or (-) buttons to (-) EXIT (+) adjust the target Temp. READY TEMP 175 Use the (+) or (-) buttons to (-) EXIT (+) adjust the target Temp. CABINET TEMP 38 Use the (+) or (-) buttons to (-) EXIT (+) adjust the target Temp.
  • Page 17 MENU SCREEN Use the (+) or (-) buttons to RINSE TIME ? adjust Rinse Alarm delay (-) 12 Hrs (+) Select (YES) to enable RINSE LOCKOUT ? NO EXIT YES Select (YES) to enable BIB EMPTY LOCKOUT NO EXIT YES Select (YES) to enable BREW LOCKOUT ? NO EXIT YES...
  • Page 18 Use the (+) or (-) buttons to enter volume collected 36.0OZ CAL RIGHT SIDE ? EXIT YES For Portion Control Dispensers (LCR-2 PC, LCR-2C PC, LCR-2A PC) only CAL HOT WTR FLO ? Place a 64 Oz. (2000 mL) container under the Hot Water PULL DISPENSE...
  • Page 19 MENU SCREEN BIB EMPTY -> 500 Use the (+) or (-) buttons to EXIT adjust empty BIB threshold XX REFILL -> 155 Use the (+) or (-) buttons to (-) EXIT (+) adjust Refill threshold WTR START DELAY Use the (+) or (-) buttons to (-) .15SEC (+) adjust delay time WTR STOP DELAY...

  • Page 20: Loading The Concentrate

    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.

  • Page 21: Operating The Pull & Hold Dispenser

    NOTE: The temperature of the product being dispensed will start to drop after ~2 gal. continuous draw. Recovery time will be dependent on the temperature of the supply water and the voltage at which the heater coil is being operated. (Models LCR-2, LCR-2C, LCR-2A) 36026 042104...

  • Page 22: Operating The Preset Portion Control Dispenser

    NOTE: The temperature of the product being dispensed will start to drop after ~2 gal. continuous draw. Recovery time will be dependent on the temperature of the supply water and the voltage at which the heater coil is being operated. (Models LCR-2 PC, LCR-2C PC, LCR-2A PC) 36026 120105...

  • Page 23: Cleaning And Preventative Maintenance

    CLEANING & PREVENTATIVE MAINTENANCE General Cleaning and Sanitizing Procedures Note: The BUNN Liquid Coffee Dispenser incorporates a “user selectable” rinse reminder feature, which lights ® the Rinse LED on the front panel and disables dispensing when it is time to rinse. See Programming Functions to activate this feature.

  • Page 24: Replacing The Pump Tubing

    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.

  • Page 25: Draining The Hot Water

    DRAINING THE HOT WATER TANK CAUTION: The dispenser must be disconnected from the power source throughout these steps. 1. Disconnect the dispenser from the power source. 2. Shut off and disconnect the incoming water supply. 3. Remove the front splash panel. 4.

  • Page 26: Troubleshooting

    A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department. • Only qualified service personnel should perform inspection, testing, and repair of electrical equipment.
  • Page 27 Left Refill LED “ON” Concentrate BIB is Empty. Left BIB Empty BIB Not properly connected Tubing kinked or blocked Empty BIB warning set too high Right Refill LED “ON” Concentrate BIB is Empty. Right BIB Empty BIB Not properly connected Tubing kinked or blocked Empty BIB Warning set too high Left Refill LED...
  • Page 28 Dispenser Diagnostics-LCD Display Screen Displayed LF TARGET RPM 1. The Tube Size selected for the Left TOO HIGH !! Hand Dispenser is too small for the application. TUBE TOO SMALL 2. The Ratio selected for the Left Hand CHECK DISP RATIO Dispenser is not correct for the application.
  • Page 29 Screen Displayed Possible Cause 1. Concentrate BIB is Empty. LEFT BIB EMPTY! 2. BIB Not properly connected. REPLACE PRODUCT 3. Tubing kinked or blocked. CHECK THRESHOLD 4. Empty BIB Warning set too high. 1. Concentrate BIB is Empty. RIGHT BIB EMPTY! 2.
  • Page 30 Screen Displayed Possible Cause 1. C o r r e s p o n d i n g COOL TEMP SENSOR Sensor Probe wire(s) broken or OUT OF RANGE disconnected. 2. Product cabinet temperature too low. CHECK FOR BAD CONNECTIONS 1.

  • Page 31: Field Calibration Of The Concentrate Pumps

    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.

  • Page 32: Dispenser Flow Rate Calibration

    Field Calibration of the Concentrate Pumps / Dispenser Flow Rates 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.

  • Page 33: Field Calibrating The Empty Bib Warning

    Field Calibrating the Empty BIB Warning The dispenser will automatically turn on the Left or Right “REFILL LED”, see Operating Controls and Interface, when the corresponding BIB is Empty. The Refill message is triggered when the FlavorGard drops below the minimum setting. The factory set minimum is 500 and should be correct for most locations. However, in some areas the hardness of the local water supply may effect this reading.

  • Page 34: Schematic Wiring Diagrams

    SWITCH WHI/GRY NITE WHI/VIO 120 VOLTS AC 2 WIRE 120/208-240 VOLTS AC 3 WIRE 208-240 VOLTS AC 2 WIRE SINGLE PHASE 50/60HZ 36025.0004A 07/10 © 2010 BUNN-O-MATIC CORPORATION MASTER ON/OFF LIMIT Early Models THERMOSTAT SW. & THERMOSTAT BLK-14 TANK HEATER...
  • Page 35 WHI/BLK J1-16 SELECTOR SWITCH WHI/GRY NITE WHI/VIO 230 VOLTS AC 2 WIRE SINGLE PHASE 50HZ 36025.0001H 06/11 © 2003 BUNN-O-MATIC CORPORATION RFI SUPPRESION CAPACITOR 2.2uF DOUBLE POLE LIMIT THERMOSTAT Early Models SW. & THERMOSTAT TANK HEATER BLU-14 RED-14 PORTION CONTROL...
  • Page 36 36026 073107...

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Lcr-2aLcr-2a pcLcr-2 pc

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