Bunn Silver JDF-4S Installation & Operating Manual
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Bunn Silver JDF-4S Installation & Operating Manual

Ph or pc with non lit or lit graphic door, ph or pc with lit segment door
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JDF-2S, JDF-4S
Silver Series
®
JDF-2S & JDF-4S PH or PC with Non LIT or LIT Graphic Door
JDF-2S & JDF-4S PH or PC with LIT Segment Door
INSTALLATION & OPERATING GUIDE
Bunn-O-Matic Corporation
Post Office Box 3227, Springfield, Illinois 62708-3227
Phone (217) 529-6601 | Fax (217) 529-6644
www.bunn.com
44744.0003 C 7/23 © 2018 Bunn-O-Matic Corporation
1

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Summary of Contents for Bunn Silver JDF-4S

  • Page 1 JDF-2S & JDF-4S PH or PC with Non LIT or LIT Graphic Door JDF-2S & JDF-4S PH or PC with LIT Segment Door INSTALLATION & OPERATING GUIDE Bunn-O-Matic Corporation Post Office Box 3227, Springfield, Illinois 62708-3227 Phone (217) 529-6601 | Fax (217) 529-6644 www.bunn.com 44744.0003 C 7/23 © 2018 Bunn-O-Matic Corporation...

  • Page 2: Warranty

    BUNN’S 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

    THIS EQUIPMENT IS ENERGIZED AT ALL TIMES UNLESS L' ÉQUIPEMENT EST TOUJOURS SOUS TENSION de faire l’entretien. ELECTRICALLY DISCONNECTED. LORSQU'IL N'EST PAS DÉBRANCHÉ. 00986.7000M 10/14 ©1994 Bunn-O-Matic Corporation 00986.7000 27442.7000 CHARGE CHARGE Type R134A, Amount 283 g (10 oz) Type R134A, Amount 255 g (9 oz) GWP 1430, CO2 equivalent 0.40t...

  • Page 4: Initial Set-Up & Electrical Requirements

    CE REQUIREMENTS • This appliance must be installed in locations where it can be overseen by trained personnel. • For proper operation, this appliance must be installed where the temperature is between 5°C to 32°C and 50% humidity. • Appliance shall not be tilted more than 10° for safe operation. •...

  • Page 5: Initial Fill

    NOTE- At least 18 inches (457 mm) of an FDA approved flexible beverage tubing, such as reinforced braided polyethylene, before the dispenser will facilitate movement to clean the counter top. It can be purchased direct from BUNN-O-MATIC (part number 34325.10_ _ [see Illustrated Parts Catalog for complete part number.]) BUNN-O-MATIC does not recommend the use of saddle valves to install the dispenser.

  • Page 6: Door Cover Installation

    JDF-2S or JDF-4S DOOR COVER INSTALLATION Station Station Station Station 3 water 4 Step 2: Hold door cover close enough to inner door Step 1: Familiarize yourself with the circuit board switch and connect all switch membranes to the circuit membrane connector layout before connecting the board before door placement onto the inner door switch membranes to the appropriate stations.

  • Page 7: Plumbing Hookup

    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.
  • Page 8 INITIAL FILL (Continued) 7. Turn 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.

  • Page 9: Operating Controls

    OPERATING CONTROLS 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. FIG 7 Refrigeration Switch Pressing and holding dispense switch (labeled PUSH) will initiate product flow from the respective nozzle;...
  • Page 10 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.

  • Page 11: Dispenser Use

    OPERATING CONTROLS (Continued) Dipsenser Operation 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 (Push and Hold Membrane Switch Machines) The dispenser is also equipped with a portion control option.
  • Page 12 OPERATING CONTROLS (Continued) Procedure to return all dispense heads back to Push and Hold mode (Push and Hold Membrane 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.

  • Page 13: Adjustments & Optional Settings

    1. Place a graduated measuring cup or the large chamber of the empty brixing cup (BUNN-O-MATIC part number 33095.0000) under the appropriate 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.
  • Page 14 Ambient Concentrates (Optional) 1. Install an Ambient Concentrate Conversion Kit (BUNN-O-MATIC part number 33699.0002) per the instruc- tions provided in the kit. 2. Attach the concentrate product hose to the appropriate concentrate line located at the rear of the dispenser.
  • Page 15 ADJUSTMENTS AND OPTIONAL SETTINGS Brix Adjustment 1. Adjust the water flow as described in Water Flow Testing 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.
  • Page 16 ADJUSTMENTS AND OPTIONAL SETTINGS Product Adjustment 1. Adjust the water flow as described in Water Flow Testing and Adjustment. 2. Place an empty container under the appropriate dispense nozzle. 3. Press and hold the “Product Dispense Switch”, until water and concentrate begin flowing freely from the dispense nozzle. 4.

  • Page 17: Cleaning

    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.
  • Page 18 CLEANING (cont) Weekly: 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. Top off if needed. Annually: Replace Pump Tubing 39690.0000 Tube Kit JDF-2S &...

  • Page 19: Function Lists

    FUNCTION LIST Circuit Board LED Indicators - JDF-2S (Early Models) LED # LED Color Illuminates: Green When the compressor should be ON. 2 Cabinet When the cabinet temperature is above 50 degrees F. Flashes slowly when cabinet temperature exceeds 50 degrees F for 4 hours.
  • Page 20 FUNCTION LIST (Continued) Circuit Board LED Indicators - JDF-4S and Late Model JDF-2S LED # LED Color Illuminates: 1 Bath 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.

  • Page 21: Troubleshooting

    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 personnel.
  • Page 22 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.
  • Page 23 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dispense station not working 1. Dispense Lockout switch set to Place switch in ON position. OFF position. 2. Dispense switch failed Check switch and harness for proper continuity. All stations dispense concentrate Main water supply Check for ON position.
  • Page 24 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dispense station Water solenoid Replace solenoid (24vdc) or check concentrate only wire connection between water valve and main control board. Dispense station Concentrate out Replace refill concentrate container water only or BIB Product pump not pumping Check for proper counterclockwise rotation of pump rollers.
  • Page 25 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water leak filling drip tray or around 1. Initial fill/setup Some expansion normal. May fill dispense deck area drip tray during initial ice block formation 2. Dispense deck Inspect or replace fittings clamps, o-rings, solenoids and quick discon- nect fittings.
  • Page 26 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Unit is not working 1. Step-down transformer. Check for 120/24 or 230/24 vac. If no 24vac reading, replace step-down transformer. 2. Main control board. If 24 vac present and no LED’s lit, replace control board.. Difficulty brixing and/or weak bev- 1.

  • Page 27: Quick Setup Guide

    QUICK START SETUP GUIDE 1. Hold door cover close enough to inner door and connect all switch membranes to the circuit board before door placement 3. Secure the door cover using the pro- 2. Place door cover over inner door. onto the inner door assembly.

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