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JDF-2S
JDF-4S
Silver Series®
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
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manual updates. For Technical
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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 User Notices .................................................................................................................. 3 Initial Set-Up & Electrical Requirements ........................................................................ 4 Plumbing Requirements ...........................................................................................
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INITIAL SET-UP CAUTION: The dispenser is very heavy! Use care when lifting or moving it. Use at least two people to lift or move the dispenser. Place dispenser on a sturdy counter or shelf able to support at least 150 lbs. (68 kg). This dispenser is designed for indoor use only. Set the dispenser on the counter where it will be used. This dispenser requires a minimum of 4 inches (102 mm) of air clearance at the rear and 8 inches (203 mm) of air clearance above the dispenser. Minimal cle
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DOOR COVER INSTALLATION 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 P3577 JDF-4S JDF-2S 2. On Portion Control models, connect membrane 3. Install door cover switches to Door Circuit Board. P3578 JDF-4S Shown JDF-2S & JDF-4S 4. Secure the door cover using 5 screws provided. P3840 P3579 JDF-4S JDF-2S 44744 032811 5
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PLUMBING HOOKUP The plumbing connection is located on the rear of the dispenser. A 3/8" (9.52 mm) male flare adapter fitting is supplied, installed on the rear of the dispenser. NOTE - Water pipe connections and fixtures directly connected to a potable water supply shall be sized, installed and maintained in accordance with federal, state and local codes. P3841 P3580-1 FIG 1 Plumbing Connections - JDF-2S FIG 2 Plumbing Connections - JDF-4S INITIAL FILL CAUTION: The dispenser must be disc
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INITIAL FILL (Continued) 7. Turn ON the refrigeration switch near the main control board. 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 in the end of the fill tube and store back into the dispenser. 10. Set the Program Switch (near main control board) to the OFF position. (On older models without program switch
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PRIMING 1. Open the dispenser door 2. Load concentrate per instructions in section titled Loading. 3. Close the dispenser door. 4. Place a large container under the appropriate dispense nozzle. Press and hold the “Product Dispense Switch” Fig 5, until concentrate dispenses from the dispense nozzle. Note: This may take several seconds, depending on the installation and set pump speed. OPERATING CONTROLS Refrigeration Switch The refrigeration switch is located on the Electrical Panel of the dispe
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OPERATING CONTROLS (Continued) 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 adjustment procedures. B. Plus/Stop Switch This switch can be used to “top-off” a beverage. Pressing and holding switch will initiate product flow from the respect
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OPERATING CONTROLS (Continued) DISPENSER USE Press and Hold Dispensing: 1. Place a cup on the drip tray beneath the desired dispensing nozzle. 2. Press and hold the “Product Dispense” switch until the beverage reaches the desired level, then release. 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
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OPERATING CONTROLS (Continued) 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. 3. Remove drip tray and splash panel from the front of the machine then replace the drip tray. 4. For the JDF-2S, press and hold either dispense switch while plugging the dispenser into the power source. For the JDF-4S, press and hold two left dispense switches while plugging the dispen
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CLEANING & PREVENTIVE MAINTENANCE Daily: Rinse Procedure Tools 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 dispense nozzle. 4. Open dispenser door and reconnect all product containers. Daily: Parts Washing 1. Remove and wash the dispense nozzle(s), mixing element(s), d
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CLEANING (cont) Monthly: Clean Condenser Coils 1. Use a soft bristle brush to clean the build up of dirt in the condenser. NOTE: Some models include a removable filter that can be cleaned in warm soapy water. Annually: Replace Pump Tubing 39690.0000 Tube Kit JDF-2S & JDF-4S 39688.0000 Tube Assembly 1. Open dispenser door. 2. Remove all product containers and place them in a refrigerated (35-40 degrees F [1.6-4.4 degrees C]) envi- ronment. Disconnect all connections to ambient products from t
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ADJUSTMENT & OPTIONAL SETTINGS Water Flow Testing and Adjustment 1. Place a graduated measuring cup or the large chamber of the empty brixing cup (BUNN-O-MATIC part number 33095.0000) under the ap- propriate dispense nozzle. Place the Program switch in the ON position. 2. Press and release the desired “Product Dispense Switch” three times. (On Portion Control models, use the plus/stop switches) 3. The selected position will dispense water (no concentrate) only for 3 seconds. 4. Measure the wat
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ADJUSTMENT & OPTIONAL SETTINGS (cont) Total Dispense Ratio Set Up Procedure 1. Adjust water flow as described in Water Flow Testing and Adjustment. Record water output setting for later reference on each dispense head. 2. Place the Program switch in the ON position. 3. Place a measuring container under the dispense nozzle, press and release the DISPENSE button 6 times. 4. Record the total ounces dispensed. 5. Refer to the Brix/Ratio chart below to confirm proper total dispensed amount for rat
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ADJUSTMENT & OPTIONAL SETTINGS (cont) Dispenser Lockout Dispense functions of the dispenser can be turned-off to prevent unauthorized use of the dispenser, while keeping the refrigeration system running. 1. Locate the Dispense Lockout switch at the bottom front of the dispenser behind the drip tray. 2. Place the switch in the OFF position to prevent dispensing. 3. Place the switch in the ON position to allow dispensing. NOTE: This switch will also operate the door lights on models equipped with
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FUNCTION LIST 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 functions are locked out under this condition. Power down the dispenser to reset. Flashes rapidly if dispense is attempted in lockout condition. Open cabinet thermistor circuit will flash #2 a
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FUNCTION LIST (Continued) 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 every 3 seconds. The compressor will not run under this condition. Shorted bath thermistor circuit will flash #1 and #2 LED’s 2 times every 3 seconds. The compressor will not run under
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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. • Inspection, testing, and repair of electrical equipment should be performed only by qualified service person- nel. • All electronic components have 120-240 volt ac and low voltage dc potential on their terminals. Shorting of terminals or t
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Refrigeration 1. Compressor ON/OFF switch. Check for "ON" position or no con- Dispense stations not working. tinuity - replace switch. Note: Cooling failure or excessive bath and cabinet temperatures for 2. Dirty condenser filter or fins. Clean filter and fins or replace con- more than 4 hours will result in denser filter. (Filter not supplied on dispense lockout or no dispense. some machines). 3. Condenser fan not running. A) Check for 120
