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Bunn 38791.0000K manual

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Table of contents for the manual

  • Page 1

    R EG U LA R D EC A FE R EF IL L R EA D Y PO W ER RIN S E C AR AF E ´ H O T W A T ER ST O P ! 2 . P r e ss an d hol d w he n i n m an u al m od e or pre ss an d rel e as e w hen in p or tion m od e 1 . P r e ss for Car af e´ an d cho os e p r oduc t LCA-2 LP INST ALLA TION & OPERA TING GUIDE BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRI[...]

  • Page 2

    2 38791 050511 BUNN-O-MA TIC 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 part[...]

  • Page 3

    3 Warranty .................................................................................................................................................2 User Notices ...........................................................................................................................................4 Introduction .........................[...]

  • Page 4

    4 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. 00656.0001 00986.0002 11646.0002 37881.0000 38791 060711 00824.0002 As directed in the International Plumbing Code of the Internati[...]

  • Page 5

    5 ELECTRICAL REQUIREMENTS WARNING - If the power cord is ever damaged, it must be replaced by the manufacturer or its service agent with a special cord available from the manufacturer or its service agent in order to avoid a hazard. The LCA-2 LP dispenser is supplied with a 120-volt / 15 Amp cord set and require a 2-wire, grounded, individual branc[...]

  • Page 6

    6 INITIAL SET -UP NOTE: The LCA-2 LP weighs approximately 70 lbs. (32 kg). If necessary , use more than one person when lifting or moving the dispenser . 1. Cut the plastic bands and remove the top box. 2. Locate and remove the parts box from top of packaging and set aside. 3. Remove foam packing. 4. Set dispenser on the counter where it is to be u[...]

  • Page 7

    7 OPERA TING CONTROLS AND INTERF ACE 1. Dispense Switches: Push to dispense product. 2. Stop Switch: Momentary switch stops all dispense functions. 3. Hot Water Switch: Push and Hold switch to dispense hot water from the center dispense tip. 4. Carafe Switch: Momentarily pushed to select the Carafe dispense Volume. 5. Power LED: Red - illuminates w[...]

  • Page 8

    8 14 11 12 13 2 4 1 3 7 8 5 6 9 10[...]

  • Page 9

    9 INST ALLING PUMP TUBING INST ALLING THE PUMP TUBING Refer to the T ube Replacement Instruction inside the Cabinet door . 1. Loosen the thumbscrew securing the tubing retainer plate to the pump body and set the retainer plate aside. 2. Depress the tension screw and remove it from the notch in the pump body , releasing the spring tension on the pum[...]

  • Page 10

    10 INITIAL FILL & HEA T 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 sour ce. 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 [...]

  • Page 11

    11 Rinse Alarm Feature Periodic rinsing of the mix chambers and dispense tips is essential for proper maintenance and optimum performance of the dispenser . The automated Rinse Alarm feature has two levels of operation, Disabled and Warning. Alarm Level Selected Alarm Mode Disabled None Warning Rinse LED will come on 4 hrs prior to the selected tim[...]

  • Page 12

    12 PROGRAMMING THE DISPENSER Open the dispenser door to access the digital programming module with LED display . T wo basic modes are available to the operator: Display Mode and Program Mode. T o enter the Display Mode, Set the RUN/NIGHT/PROGRAM Switch to the RUN position. T o enter the Program Mode, Set the RUN/NIGHT/PROGRAM Switch to the PROGRAM [...]

  • Page 13

    13 Regular Dispense T otal Displays T otal Regular Coffee Dispensed (XX.X Gal) Decaf Dispense T otal Displays T otal Decaf Coffee Dispensed (XX.X Gal) Displays Software Version # - Exits T o Home View After 3 Seconds. LCD DISPLA Y DISPLA Y MODE DESCRIPTION Empty Product Threshold Displays Empty Product Threshold (Default = 600) PROGRAMMING THE DISP[...]

  • Page 14

    14 PROGRAMMING THE DISPENSER (Cont.) Program Mode : Used to change or enter new set-up values. T o enter the Program Mode , Set the RUN/NIGHT/PROGRAM Switch to the PROGRAM position, the unit will display “__PPP” to indicate it is in the Program Mode. Use the MENU switch to scroll to the next display . Use the Increase (+) and Decrease (-) switc[...]

  • Page 15

    15 Right (Decaf) Dispense T otal Reset T otal to Zero (00.0 Gal) LCD DISPLA Y PROGRAM MODE DESCRIPTION PROGRAMMING THE DISPENSER (Cont.) Program Mode (Continued) Empty Product Threshold Set Conductance Threshold Default = 600 Range = 100 Min / 900 Max T o check Conductance of Hot Water , view the display while rinsing. Set value to 100 above readin[...]

  • Page 16

    16 PRIMING THE CONCENTRA TE LINES 1. Open the dispenser door . 2. Select Prime on the Function Selector Switch and Run on the Mode Selector Switch. 3. Close the dispenser door . 4. Place a container under the dispense tip. 5. Activate the appropriate dispenser until concentrate flows from the dispense nozzle. Priming may take 5 to 10 seconds. 6. O[...]

  • Page 17

    17 OPERA TING THE DISPENSER Set the Function Selector Switch to “Normal” and the Mode Selector Switch to “Run .” 1A. Push and Hold Dispense Mode (Cup at a time). See Programming Functions to set this amount. a. Place cup on the tray beneath the dispensing tip. b. Push and hold the corresponding dispense switch until the container is full. c[...]

  • Page 18

    18 CLEANING & PREVENT A TIVE MAINTENANCE General Cleaning and Sanitizing Procedures Note: The BUNN ® LCA-2 LP dispenser incorporates a “user selectable” rinse reminder feature, which lights the Rinse LED on the front panel when it is time to rinse. See Programming Functions to activate this feature. Daily: RINSING 1. Open the dispenser doo[...]

  • Page 19

    19 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 wea[...]

  • Page 20

    20 LCD DISPLA Y CALIBRA TION MODE DESCRIPTION CALIBRA TING THE DISPENSER Left (Regular) Pump Cal. Set PRIME-NORMAL-RINSE switch to PRIME position. Press and hold Regular Dispense Switch until pump stops (20 sec.) Refer to Field Calibration of the Concentrate Pumps. NOTE: The LCA-2 LP is calibrated at the factory and does not normally need to be re-[...]

  • Page 21

    21 CALIBRA TING THE DISPENSER (Cont.) LCD DISPLA Y CALIBRA TION MODE DESCRIPTION Right (Decaf) Water Rate Set PRIME-NORMAL-RINSE switch to RINSE position. Press and hold Decaf Dispense Switch until flow stops (20 sec.) Refer to Field Calibration of the Concentrate Pumps. Right (Decaf) Water Rate Enter Liters collected from the 20 sec. test above. [...]

  • Page 22

    22 LED DISPLA Y ERROR DESCRIPTION/TROUBLESHOOTING TROUBLESHOOTING GUIDE Error Codes When an error has occurred, all Door LED’ s will be flashing. Open the Door to access the LED Display and record the Error Code. Refer to the list of Error Codes below to identify the problem. A troubleshooting guide is provided to suggest probable causes and rem[...]

  • Page 23

    23 TROUBLESHOOTING GUIDE (Cont.) Error Codes (Continued) LED DISPLA Y ERROR DESCRIPTION/TROUBLESHOOTING T ank T emp Sensor Failed Sensor Reading Out Of Range (High or Low). Faulty Sensor wiring. Switch Board Failure Unable T o Communicate With The Switch Board In The Door . Faulty wiring between the Door and the Main Control Board. 38791 040306 Pow[...]

  • Page 24

    24 (Continued Next Page) Field Calibration of the Concentrate Pumps & Dispenser Flow Rates The factory set default values for the Pump & Dispenser Flow Rates are ver y 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[...]

  • Page 25

    25 Field Calibration of the Concentrate Pumps & Dispenser Flow Rates (Continued) 4. Stop dispensing and allow the tip to stop dripping. Discard the water collected 5. Place a 1500 to 2000 ml graduated container under Left Dispense Tip. 6. Press & Hold the Regular dispense switch. The dispenser will display a 20 second count down timer and t[...]

  • Page 26

    26 BLU/BLK-16 RED-22 WHT/BLK-22 WHT/BLU-22 WHT/BLU-22 WHT/BLK-22 TA N-22 M SWITCH & LED BOARD RED/BLK-18 RIGHT PUMP RPM SENSOR M LEFT PUMP RPM SENSOR WHT/RED-18 BRN/WHT -18 BRN/BLK-18 GRN RED BLK 1 RED GRN BLK 1 WHT/RED-18 RED-22 WHT/BLK-22 RED/BLK-18 BRN/WHT -18 BRN/BLK-18 TA N-22 WHT/BLK-22 WHT/BLU-22 WHT/BLU-22 J7-4 J7-1 J7-4 J7-1 J6-16 J6-5[...]