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Bunn JDF-4S manual

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Table of contents for the manual

  • Page 1

    JDF-2S JDF-4S Silver Series® INST ALLA TION & OPERA TING GUIDE BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 T o ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts Catalog, Programming Manual, or Service Manual, please visit[...]

  • Page 2

    2 44744.2 070913 BUNN-O-MA TIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal ser vers and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor . 2) All ot[...]

  • Page 3

    3 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. 27442.7000 00986.7000 33461.0001 JDF-2S W ARNING FA ILURE TO COMPL Y RISKS EQUIPMENT DAMAGE, FIRE OR SHOCK HAZARD. READ THE ENTIRE [...]

  • Page 4

    4 PLUMBING REQUIREMENTS This dispenser must be connected to a COLD WA TER system with operating pressure between 20 and 100 psi (138 and 690 kPa). This water source must be capable of producing a minimum flow rate of 3 fluid ounces (88.7 milliliters) per second. A shut off valve should be installed in the line before the dispenser . Install a reg[...]

  • Page 5

    5 2. On Portion Control models, connect membrane switches to Door Circuit Board. 4. Secure the door cover using 5 screws provided. DOOR COVER INST ALLA TION 1. Install door cover by first plugging the door harness connector into the machine harness connector located at the bottom of the machine door . P3577 P3579 JDF-2S JDF-4S Shown JDF-2S JDF-4S [...]

  • Page 6

    6 INITIAL FILL CAUTION: The dispenser must be disconnected from the power source throughout the initial fill except when specified in the instructions. 1. Remove drip tray assembly and splash panel from the dispenser . Replace the drip tray . 2. Connect the water source to the back of the dispenser . 3. Pull the fill tube from the dispenser , re[...]

  • Page 7

    7 FIG 5 Initial Fill Connection - JDF-2S 7. T urn ON the refrigeration switch near the main control board (Fig. 7). This will start the water bath pump circulation. 8. Check water level in the overflow tube and top off the tank if necessary (Step 5). 9. Disconnect the fill tube and allow excess water to drain into the drip tray . Replace the plug[...]

  • Page 8

    8 OPERA TING CONTROLS FIG 7 Refrigeration Switch FIG 9 Product Dispense Switches - JDF-2S Refrigeration Switch The refrigeration switch is located on the Electrical Panel of the dispenser near the Circuit Board. This switch controls power to the water bath pump and relay contacts for the compressor and condenser fan motor . Product Dispense Switch [...]

  • Page 9

    9 FIG 11 Product Dispense Switches - JDF-2S Product Dispense Switch (Membrane Switch Machines) A. Product Dispense Switch Momentarily pressing and releasing one of the switches will initiate a timed dispense. Each station has three different timed dispenses which are preset at the factory . Refer to DISPENSER USE section for preset volumes and adju[...]

  • Page 10

    10 OPERA TING CONTROLS (Continued) Portion Control Option (Mechanical Switch Machines) The dispenser is also equipped with a portion control option. The following steps will guide you through the set up process for this option. Portion control can be set on one or all dispense heads as needed. 1. Unplug dispenser from power source. 2. Set the Progr[...]

  • Page 11

    11 P3585 FIG 15 T emperature LEDs JDF-2S (Early Models) FIG 16 T emperature LEDs JDF-4S P3845 OPERA TING CONTROLS (Continued) FIG 15A T emperature LEDs JDF-2S (Late Models) Procedure to return all dispense heads back to Push and Hold mode (Mechanical Switch Machines): 1. Unplug dispenser from power source. 2. Place Program switch in the ON position[...]

  • Page 12

    12 CLEANING & PREVENTIVE MAINTENANCE Daily: Rinse Procedure T ools required: 32 oz. (946 ml) minimum empty container 1. Open dispenser door . Lift up on product containers and remove them from the machine. 2. Close the door , place an empty container under the dispensing nozzle. 3. Dispense from each station until clear water flows from the di[...]

  • Page 13

    13 CLEANING (cont) Monthly: Clean Condenser Coils and Filter 1. Removable filter can be cleaned in warm soapy water . 2. Use a soft bristle brush to clean the build up of dirt in the condenser . Annually: Check water level in ice bath. T op off if needed. Annually: Replace Pump T ubing 1. Open dispenser door . 2. Remove all product containers and [...]

  • Page 14

    14 FIG 17 Adjusting Water Flow Using 1/4" allen wrench Mix Ratio Adjust water flow rate to: Product Brix % (water + concentrate) 2+1 *3.0 fl. oz (89 ml) Prune Juice 16.0% per 3-second test Other * Orange Juice 11.8% 4+1 Pineapple Juice 12.8% Cranberry Fruit Cocktail 14.0% *3.0 fl. oz (89 ml) Grapefruit Juice 10.6% per 3-second test Lemonade[...]

  • Page 15

    15 LOADING Frozen Concentrates 1. Thaw the frozen concentrate in a refrigerated 35-40 degrees F (1.6-4.4 degrees C) environment for 36 to 48 hours before use. NOTE: Loading frozen concentrate in the product cabinet may cause damage to the machine. This damage is not covered by warranty . 2. Thoroughly mix the thawed concentrate by vigorously shakin[...]

  • Page 16

    16 T otal Dispense Ratio Set Up Procedure 1. Adjust water flow as described in W ater Flow T esting and Adjustment . Record water output setting for later reference on each dispense head. Suggested target is 3 ounces. 2. Place the Program switch in the ON position. 3. Place a measuring container under the dispense nozzle, press and release the DIS[...]

  • Page 17

    17 T emperature Compensated Refractometer Method 1. Adjust the water flow as described in Water Flow T esting and Adjustment. 2. Place an empty container under the appropriate dispense nozzle. 3. Press and hold the “Product Dispense Switch” Figs 9 & 10, until water and concentrate begin flowing freely from the dispense nozzle. 4. Discard [...]

  • Page 18

    18 FUNCTION LIST P3585 FIG 18 JDF-2S (Early Models) 1 3 5 2 4 44744.2 110813 Circuit Board LED Indicators - JDF-2S (Early Models) LED # LED Color Illuminates: 1 Green When the compressor should be ON. 2 Cabinet Red When the cabinet temperature is above 50 degrees F . Flashes slowly when cabinet temperature exceeds 50 degrees F for 4 hours. Dispense[...]

  • Page 19

    19 FIG 19 JDF-4S FUNCTION LIST (Continued) 3 1 2 4 5 P3845 Circuit Board LED Indicators - JDF-4S and Late Model JDF-2S LED # LED Color Illuminates: 1 Bath Red When bath temperature is above 34 degrees F . Flashes slowly when compressor is in a 6 minute delay period. Open bath thermistor circuit will flash #1 and #2 LED’ s 1 time ever y 3 seconds[...]

  • Page 20

    20 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 T echnical Ser vice Department. • Inspection, testing, and repair of electrical equipment should be performed only by q[...]

  • Page 21

    21 TROUBLESHOOTING (cont.) Check for "ON" position or no con- tinuity - replace switch. Clean filter and fins or replace con- denser filter . (Filter not supplied on some machines). A) Check for 120V or 230V AC. Re- place fan motor or check fan blades for obstructions. B) Check compressor LED on circuit board. If ON, relay coil should [...]

  • Page 22

    22 TROUBLESHOOTING (cont.) Dispense station not working All stations dispense concentrate only 1. Dispense Lockout switch set to OFF position. 2. Dispense switch failed Main water supply Frozen bath Inlet water valve failed Place switch in ON position. Check switch and harness for proper continuity . Check for ON position. A) Compressor relay/conta[...]

  • Page 23

    23 TROUBLESHOOTING (cont.) Dispense station concentrate only Dispense station water only Replace solenoid (24vdc) or check wire connection between water valve and main control board. Replace refill concentrate container or BIB Check for proper counterclockwise rotation of pump rollers. If coun- terclockwise, replace pump tubing. If clockwise, wire[...]

  • Page 24

    24 TROUBLESHOOTING (cont.) Water leak filling drip tray or around dispense deck area Water leaking beneath machine Erratic spray during dispense Dispense nozzle dripping water 1. Initial fill/setup 2. Dispense deck 3. Water pressure greater than 100psi 1. Bath tank overflow . 2. Condensation from cabinet cool- ing coil. Dispense nozzle mixer mis[...]

  • Page 25

    25 TROUBLESHOOTING (cont.) Unit is not working Difficulty brixing and/or weak bev- erage Difficulty brixing and/or weak bev- erage Difficulty brixing bag-in-box 1. Step-down transformer . 2. Main control board. 1. Product viscosity or too cold. 2. Low water pressure. 3. High water pressure. 4. Dispense valve adjustment set- ting. 5. Brix ratio. [...]

  • Page 26

    26 COOLANT SCHEMA TIC DIAGRAM CONDENSER SUCTION ACCUMULA TO R COMPRESSOR EV APORA TO R PROCESS TUBE FIL TER DRYER 44744.2 062912[...]

  • Page 27

    27 J6-1 J11-1 J11-5 J6-1 J6-5 J6-3 J5-1 J5-4 J2-1 J2-6 GRN WHI/ORN LEFT DISPENSE RIGHT DISPENSE LEFT DISPENSE RIGHT DISPENSE YEL YEL WHI/VIO RECIR. PUMP BRN WHI BLK J1-1 J1-5 WHI J3-1 J3-2 WHI/BLK ORN WHI/VIO WHI/ORN VIO RED RED RED WHI/RED BLK WHI RED/BLK RED/BLK YEL WHI/BLU BLU BLK RED BLU YEL YEL BRN BRN ORN RED MOTOR CONDENSOR FAN RED/BLK BLU/B[...]

  • Page 28

    28 SCHEMA TIC WIRING DIAGRAM JDF-2S 44744.2 030813 J6-1 J11-1 J11-5 J6-1 J6-5 J6-3 J5-1 J5-4 J2-1 J2-6 GRN WHI/ORN LEFT DISPENSE RIGHT DISPENSE LEFT DISPENSE RIGHT DISPENSE YEL YEL WHI/VIO RECIR. PUMP BRN WHI BLK J1-1 J1-5 WHI J3-1 J3-2 WHI/BLK ORN WHI/VIO WHI/ORN VIO RED RED WHI/RED BLK WHI RED/BLK RED/BLK YEL WHI/BLU BLU BLK RED BLU YEL ORN BLK R[...]

  • Page 29

    29 J6-1 J6-3 J5-1 J5-4 J2-1 J2-6 GRN WHI/ORN STA TION 1 DISPENSE STA TION 2 DISPENSE STA TION 1 DISPENSE STA TION 2 DISPENSE YEL YEL WHI/VIO RECIR. PUMP BRN WHI BLK J1-1 J1-5 WHI J3-1 J3-2 WHI/BLK ORN WHI/VIO WHI/ORN VIO RED RED WHI/RED BLK WHI RED/BLK YEL WHI/BLU BLU RED MOTOR CONDENSOR FAN RED/BLK BLU/BLK BLU/BLK J7-1 J7-2 J9-1 J9-2 PUMP PUMP FAN[...]

  • Page 30

    30 SCHEMA TIC WIRING DIAGRAM JDF-4S 44744.2 030813 J6-1 J6-3 J5-1 J5-4 J2-1 J2-6 GRN WHI/ORN STA TION 1 DISPENSE STA TION 2 DISPENSE STA TION 1 DISPENSE STA TION 2 DISPENSE YEL YEL WHI/VIO RECIR. PUMP BRN WHI BLK J1-1 J1-5 WHI J3-1 J3-2 WHI/BLK ORN WHI/VIO WHI/ORN VIO RED RED WHI/RED BLK WHI RED/BLK YEL WHI/BLU BLU RED MOTOR CONDENSOR FAN RED/BLK B[...]

  • Page 31

    31 1. Install door cover by first plugging the door harness connector into the machine harness connector located at the bottom of the machine door . 2. Install door cover . 3. Secure the door cover using 5 screws provided. 4. Place refrigeration switch in the OFF po- sition. 5. Connect water supply to machine. (See Plumbing Requirements) 6. Connec[...]