Bunn JDF-2S Installation & Operating Manual

Silver series

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Service & repair manual (58 pages)

Specification (2 pages)

Installation & operating manual (54 pages)

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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
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 LORSQU'IL N'EST PAS DÉBRANCHÉ. ELECTRICALLY DISCONNECTED. Ne pas utiliser Debrancher le cordon 00986.7000A 10/07 ©2007 Bunn-O-Matic Corporation l'appareil lorsque d'alimentation de le panneau est l'appareil avant de faire 00986.7000 enlevé.
Page 4: Initial Set-Up & Electrical Requirements
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 countertop. 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 5: Door Cover Installation
JDF-4S JDF-2S P3577 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. JDF-4S P3840 JDF-2S P3579 44744.2 110813...
Page 6: Plumbing Hookup
NOTE: The fill timer may time out before filling is complete. Press and hold the dispense button for 10 seconds to start again if needed. FIG 4 Initial Fill Hose - JDF-4S FIG 3 Initial Fill Hose - JDF-2S 44744.2 110813...
Page 7 While the refrigeration system is creating the ice bank, the dispenser may be readied for use as described in Loading, Priming and Adjustment. FIG 6 Initial Fill Connection - JDF-4S FIG 5 Initial Fill Connection - JDF-2S 44744.2 110813...
Page 8: Operating Controls
Product Dispense Switch (Mechanical Switch Machines) Pressing and holding switch will initiate product flow from the respective nozzle; releasing the switch will stop the flow. FIG 9 Product Dispense Switches - JDF-2S FIG 10 Product Dispense Switches - JDF-4S 44744.2 110813...
Page 9 C. Chilled Water Dispense Switch (Optional for JDF-4S only) Pressing and holding switch will initiate chilled water flow from the nozzle; releasing the switch will stop flow. FIG 11 Product Dispense Switches - JDF-2S FIG 12 Product Dispense Switches - JDF-4S...
Page 10: Dispenser Use
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.
Page 11 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 dispenser into the power source.
Page 12: Cleaning
For Semi-Automatic Sanitizing Prior to S/N JDF0016500: 14. a. For the JDF-2S, press and hold both dispense buttons for about 10 seconds to initiate the sanitize cycle. b. For the JDF-4S, press and hold three left most dispense buttons (Stations 1, 2 and 3) for about 10 seconds to initiate the sanitize cycle.
Page 13 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 & JDF-4S 39688.0000 Tube Assembly 1. Open dispenser door.
Page 14: 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 15: Loading
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 16 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. Suggested target is 3 ounces. 2. Place the Program switch in the ON position.
Page 17 ADJUSTMENT & OPTIONAL SETTINGS (cont) Temperature Compensated Refractometer Method 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” Figs 9 & 10, until water and concentrate begin flowing freely from the dispense nozzle.
Page 18: 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 19 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 20: 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 person- nel.
Page 21 TROUBLESHOOTING (cont.) PROBLEM REMEDY PROBABLE CAUSE 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 22 TROUBLESHOOTING (cont.) PROBLEM REMEDY PROBABLE CAUSE 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 23 TROUBLESHOOTING (cont.) PROBLEM REMEDY PROBABLE CAUSE 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 24 TROUBLESHOOTING (cont.) PROBLEM REMEDY PROBABLE CAUSE 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 25 TROUBLESHOOTING (cont.) PROBLEM REMEDY PROBABLE CAUSE 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 26: Coolant Diagram
COOLANT SCHEMATIC DIAGRAM 44744.2 062912...
Page 27: Schematic Wiring Diagram
SCHEMATIC WIRING DIAGRAM JDF-2S (Models with LED Lited Doors) 120V 220-230V MODELS MODELS FILTER Models with Dual Dispense Option TRANSFORMER WHI/BLU TRANSFORMER WHI/BLU COMPRESSOR ASSY BLU/BLK COMPRESSOR MOTOR LIMIT THERM. WHI/BLK CONDENSOR FAN ASSY BLU/BLK MOTOR BLU/BLK RED/BLK RED/BLK REFRIGERATION...
Page 28 STATION Chassis Chassis Ground PUSH BUTTON OPTION Ground DISPENSE STATIC STATIC SHIELD SHIELD LOCKOUT SWITCH BALLAST BALLAST BALLAST DISPENSE DISPENSE STATION STATION 120 VOLTS AC 220-230 VOLTS AC 2 WIRE SINGLE PHASE 38951.0001D 10/09 © 2006 BUNN-O-MATIC CORPORATION 44744.2 030813...
Page 29 Door DISPENSE DISPENSE Chassis Ground Ground LOCKOUT LOCKOUT DISPENSE DISPENSE DISPENSE COLD DISPENSE SWITCH SWITCH Ground STATION STATION STATION WATER STATION SWITCH 120 VOLTS AC 220-230 VOLTS AC 2 WIRE SINGLE PHASE 44746.0000A 03/11 © 2011 BUNN-O-MATIC CORPORATION 44744.2 062912...
Page 30 120 VOLTS AC SWITCH STATIC STATIC STATIC STATIC STATIC SHIELD SHIELD SHIELD SHIELD SHIELD 220-230 VOLTS AC 2 WIRE COLD DISPENSE DISPENSE DISPENSE DISPENSE SINGLE PHASE WATER 39921.0001D 10/09 © 2007 BUNN-O-MATIC CORPORATION STATION STATION STATION STATION SWITCH 44744.2 030813...
Page 31: Quick Setup Guide
QUICK SETUP GUIDE - JDF-2S and JDF-4S (JDF-2S shown) P3577 1. Install door cover by first plugging the door harness connector into the machine harness connector located at the bottom P3578 P3579 2. Install door cover. 3. Secure the door cover using 5 screws of the machine door.

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Bunn JDF-2S Installation & Operating Manual

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