Bunn JDF-4S User's Manual
Contents
1. 3 second water dispense Ratio Target oz 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 1 5 2 25 2 00 1 88 1 80 1 75 1 71 1 69 1 67 1 65 1 64 1 63 1 62 1 61 1 60 1 75 2 63 2 33 2 19 2 10 2 04 2 00 1 97 1 94 1 93 1 91 1 89 1 88 1 88 1 87 2 0 3 00 2 67 2 50 2 40 2 33 2 29 2 25 2 22 2 20 2 18 2 17 2 15 2 14 2 13 2 25 3 38 3 00 2 81 2 70 2 63 2 57 2 53 2 50 2 48 2 45 2 44 2 42 2 41 2 40 2 5 3 75 3 33 3 13 3 00 2 92 2 86 2 81 2 78 2 75 2 73 2 71 2 69 2 68 2 67 2 75 4 13 3 67 3 44 3 30 3 21 3 14 3 09 3 06 3 03 3 00 2 98 2 96 2 95 2 93 3 0 4 50 4 00 3 75 3 60 3 50 3 43 3 38 3 33 3 30 3 27 3 25 3 23 3 21 3 20 3 25 4 88 4 33 4 06 3 00 3 79 3 71 3 66 3 61 3 58 3 55 3 52 3 50 3 48 3 47 3 5 5 25 4 67 4 38 4 20 4 08 4 00 3 94 3 89 3 85 3 82 3 79 3 77 3 75 3 73 3 75 5 63 5 00 4 69 4 50 4 38 4 29 4 22 4 17 4 13 4 09 4 06 4 04 4 02 4 00 4 0 6 00 5 33 5 00 4 80 4 67 4 57 4 50 4 44 4 40 4 36 4 33 4 31 4 29 4 27 4 25 6 38 5 67 5 31 5 10 4 96 4 86 4 78 4 72 4 68 4 64 4 60 4 58 4 55 4 53 4 5 6 75 6 00 5 63 5 40 5 25 5 14 5 06 5 00 4 95 4 91 4 88 4 85 4 82 4 80 4 75 7 13 6 33 5 94 5 70 5 54 5 43 5 34 5 28 5 23 5 18 5 15 5 122. Place the Dispense Lockout switch back to the ON position It will take several hours to create the ice bank required for full dispenser performance During this time some further trickling from the water bath is expected due to expansion caused by ice bank formation While the refrigeration system is creating the ice bank the dispenser may be readied for use as described in Loading Priming and Adjustment P3582 FIG 5 Initial Fill Connection JDF 2S FIG 6 Initial Fill Connection JDF 4S P3842 7 39992 042007 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 Thoroughly mix the thawed concentrate by vigorously shaking the product container Open the dispenser door Prior to placing the product container in the dispenser make sure that the o ring on the container adapter is lubricated This will ease removal of the container when it becomes necessary Place the product container in the desired position and press it firmly into the bottle adapter opening Open the vent hole in the product container Note Concentrate in the container must be completely thawed and be within the temperature range of 35 40 degrees F 1 6 4 4 degrees C Product outside of this temperature range especially below will produce an out of brix drink Ambient Concentrates Optional 1 2 3 Install an Ambient Concentrat
3. gt JDF 2 BUNN Silver Series INSTALLATION amp OPERATING MANUAL BUNN O MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD ILLINOIS 62708 3227 PHONE 217 529 6601 217 529 6644 To obtain the Illustrated Parts Catalog visit the Bunn O Matic website at www bunn com This is absolutely FREE and the quickest way to obtain the catalog Contact Bunn O Matic Corporation at 1 800 286 6070 to obtain a paper copy of the required Illustrated Parts Catalog mailed via U S Postal Service 39992 0000A 04 07 2007 Bunn 0 Matic Corporation www bunn com CONTENTS introduction Se Warranty MR 2 utr Sgann O 3 Initial Set Up amp Electrical Requirements 4 Plumbing Requirements oa soria tonum md dp opo RS 4 gu TIS S TTE EE 5 Plumbing ares id 6 T Ra c CC 6 Loading e P PII osos eo sip dpt aD EUER x natn prin na en csv ERU GR RR 7 Operating NUR TERN ERE ERES 8 Dispenser UR ios ciuitate oa Rap 8 MIS PIPER EMEN AE 10 Adjustments amp Optional Settings seen 12 Function d RENE 15 16 Coolant Diagram ebd ok darte
4. 5 09 5 07 5 0 1 5 6 67 6 25 6 00 5 83 5 71 5 63 5 56 5 50 5 45 5 42 5 38 5 36 5 33 Dispensed product 02 Temperature Compensated Refractometer Method Adjust the water flow as described in Water Flow Testing and Adjustment 1 2 3 4 en Place an empty container under the appropriate dispense nozzle Press and hold the Product Dispense Switch Figs 9 amp 10 until water and concentrate begin flowing freely from the dispense nozzle Discard the product caught previously and place the empty container back under the dispense nozzle Press and hold the Product Dispense Switch until the cup is filled Stir the contents of the cup and use the refractometer according to the manufacturer s instructions to check the brix 96 Adjust the pump speed down to decrease the brix up to increase the brix to achieve the correct brix as described in Pump Speed Adjustment 39992 042007 ADJUSTMENT amp 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 16 39992 042007 FUNCTION LIST Circuit Board LED Indicators JDF 2S When
5. s on steady When cabinet temperature is below 50 degrees F 18 39992 042007 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 the application of external voltages may result in board failure Intermittent operation of electronic circuit boards is unlikely Board failure will normally be permanent If an intermittent condition is encountered the cause will likely be a switch contact or a loose connection at a terminal or crimp Solenoid removal requires interrupting the water supply to the valve Damage may result if solenoids are energized for more than ten minutes without a supply of water The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened This will help to avoid twists and kinks in the tubing certain that all plumbing connections are sealed and electrical connections tight and isolated WARNING Exercise extreme caution when servicing electrical equipment e Unplug the dispenser when servicing except when electrical tests are spec
6. Load the containers of hot water into the dispenser just like concentrate 3 Place an empty container under the dispense nozzles 4 Press and hold the dispense button at each station until the stream out of the nozzles runs clear about 30 seconds Note the dispenser will not allow all stations to run at the same time 5 Once this is completed remove the container s and empty 6 Remove each dispense nozzle and mixing element and run under hot tap water to remove excess pulp 7 Prepare 2 5 gal 9 46 L of sanitizing solution by dissolving 1 packet of Kay 5 sanitizer into 2 5 gal 9 46 L of 120 Deg F 48 9 Deg C water to ensure 100 ppm of available chlorine 8 Place nozzle s and mixing element s in a separate 1 quart container of sanitizing solutions and mix thor oughly Allow the parts to soak for 2 minutes 9 Clean the dispense nozzle receptacle s dispense valves with the sanitizing solution and a soft bristle brush 10 Clean the concentrate bottle s inlet adapter s using the sanitizing solution and a soft bristle brush 11 Replace the mixing element s and nozzle s 12 Fill approximately 128 ounces 3 8 L of clean sanitizing solution into clean empty concentrate container s Do not use the sanitizing solution used in step 10 Load the container s into the dispenser 13 Place the empty 5 gallon bucket under the dispense nozzles 14 For the JDF 2S press and hold both dispense buttons for about 10 seconds to i
7. Dispensing function It is also used for some programming and fill procedures FIG 11 Dispense Lockout Switch DISPENSER USE Press and Hold Dispensing 1 Place acup 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 9 39992 042007 OPERATING CONTROLS Continued Portion Control Option 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 8 9 Unplug dispenser from power source 2 Place Dispense Lockout switch in the OFF position 3 4 Press and hold the left most Station 1 dispense switch while plugging the dispenser into the power source Remove drip tray and splash panel from the front of the machine then replace the drip tray Continue holding dispense switch s until all 4 temperature LED s Figs 12 and 13 on the circuit board start flashing slowly this takes about 5 seconds Release dispense switch s Press and release any dispense switch 6 times to enter the portion control set up mode This will cause the 4 temperature LED s to flash rapidly Place a container under the desired dispense nozzle to measure the portion size Press and hold the desired dispense switch to dispense product until the desired amount of product is achieved Max
8. 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 BUNN JDF 2S JDF 2SA JDF 4S and JDF 4SA are either trademarks or registered trademarks of Bunn O Matic Corporation 2 39992 042007 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 AWARNING A WARNING ALWAYS ELECTRICALLY GROUND THE CHASSIS OR ADAPTOR PLUG Y DEFORM PLUG OR CORD Moving Parts Risk Of Electrical Shock FOLLOW NATIONAL AND LOCAL ELECTRICAL CODES KEEP COMBUSTIBLES AWAY Do not operate Disconnect power before DRE unit with this servicing unit READ THE ENTIRE OPERATING MANUAL BEFORE USING THIS PRODUCT panel removed 00986 0002E 5 98 1994 Bunn O Matic Corporation 00986 0002 27442 0000 This equipment must be installed to comply with the A WARNING Basic Plumbing Code of the Building Officials and Code Administrators International Inc BOCA and the Food Service Sanitation Manual of the Food and HAZARDOUS Drug Administration FDA For models installed VOLTAGE outside the U S A comply with the applicable Plumbing SanitationCode DISCONNECT FROM P
9. the compressor should be ON 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 LEM Flashes rapidly if dispense is attempted in lockout condition Open cabinet thermistor circuit will flash 2 and 3 LED s 1 time every 3 seconds sms COIT AH Open bath thermistor circuit will flash 4 and 5 LED s 1 time every 3 seconds The compressor will not run under this condition Shorted bath thermistor circuit will flash 4 and 5 LED s 2 times every 3 seconds The compressor will not run under this condition When bath temperature is below 34 degrees F P3585 FIG 15 JDF 28 17 39992 042007 FUNCTION LIST Continued Circuit Board LED Indicators JDF 4S mu ae seconds The compressor will not run under this condition Shorted bath thermistor circuit will flash 4 and 5 LED s 2 times every 3 seconds The compressor will not run under this condition 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 and 3 LED s 1 time every 3 seconds Shorted cabinet thermistor will turn 2 and 3 LED
10. 22 Schematic Wiring Diagram 2 00422 2 2 4 00000000000000000000000000050000 000 23 Quick Setup Guide T 24 BUNN 0 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 pounds of coffee whichever comes first These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the applicable warranty period This warranty does not apply to any equipment component or part that was not manufactured by BUNN or that in BUNN s judgment has been affected by misuse neglect alteration improper installation or operation improper maintenance or repair damage or casualty This warranty is conditioned on the Buyer 1 giving BUNN prompt notice of any claim to be made under this warranty by telephone at 217 529 6601 or by writing to Post Office Box 3227 Springfield Illinois 62708 3227 2 if requested by BUNN shipping the d
11. ADJUSTMENT amp OPTIONAL SETTINGS Water Flow Testing and Adjustment 1 Place a graduated measuring cup or the large chamber of the empty CO brixing cup BUNN O MATIC part number 33095 0000 under the propriate dispense nozzle Place the Dispense Lockout switch in the 0 OFF position 2 Press and release the desired Product Dispense Switch three times S 3 selected position will dispense water no concentrate only for 3 G seconds 4 Measure the water dispensed Adjust the water flow rate Fig 14 clockwise to increase flow rate FIG 14 Adjusting Water Flow counterclockwise to decrease flow rate to the corresponding product Using 1 4 allen wrench mix ratio as follows water concentrate per 3 second test Other Orange Juice Pineapple Juice Cranberry Fruit Cocktail 4 0 fl oz 118 ml Grapefruit Juice per 3 second test Lemonade 5 1 Apple Juice Fruit Punch Grape Juice 3 1 through 7 1 Other Above 7 1 4 0 fl oz 118 ml per 3 second test High Viscosity Juice 2 25 3 0 fl oz 66 5 89 ml As Required 3 second test Maximum flow rate may be less depending on the water pressure supply at each location Note Information for specific products listed in this table is to be used for reference only Consult the product label for exact mix ratio and or brix 9o See product label for target brix 96 6 Repeat steps 1 through 5 as necessary un
12. 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 have power 120 or 230 VAC Check compressor relay coilfor 120 or 230vac NOTE Always check power with coil attached If compressor LED is ON and no 120 or 230vac re place board If yes 120 or 230vac replace relay Note Relay contacts are normally open Check compressor thermal overload N C If open check for dirty con denser filter or adequate ventilation and space around machine Check refrigeration system for leaks and proper charge A Set switch to ON position B Check switch and harness for proper continuity Check all previous items that pre tain to refrigeration or cold water recirculation 39992 042007 TROUBLESHOOTING cont PROBLEM Dispense station not working All stations dispense concentrate only PROBABLE CAUSE 1 Dispense Lockout switch set to OFF position 2 Dispense switch failed Main water supply Frozen bath Inlet water valve failed 21 REMEDY Place switch in ON position Check switch and harness for proper continuity Check for ON position A Compressor relay contacts shorted replace relay B Recirculating pump replace or check for kinked flex line A Check for 120V or 230V power when disp
13. OWER SOURCE 00656 0000 BEFORE REMOVING 12559 0003 CHARGE Type R134A Amount 9 oz 255 gm Design Pressures High 255 psi 15 5 bar Low 36 psi 2 5 bar 33461 0001 JDF 28 CHARGE Type R134A Amount 10 oz 283 gm Design Pressures High 335 psi 23 bar 2 31 MPa Low 88 psi 6 bar 0 61 MPa 33461 0000 JDF 48 3 39992 042007 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 Ibs 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 clearance is required between the dispenser sides and the wall or another appliance For optimum performance do not let warm air from surrounding machines blow on the dispenser Leave some space so the dispenser can be moved for cleaning ELECTRICAL REQUIREMENTS CAUTION The dispenser must be disconnected from the power source until specified in Electrical Hook Up The 120V rated dispensers have an attached cord set and require a 2 wire grounded individual branch circuit rated 120 volts ac 15 amp single phase 60Hz The mating connector must be a NEMA 5 15R The 230V rated dispenser has an attached cord set an
14. U 5 4 5 1 SS of RED gt DISPENSE BLU lel J6 3 RG 120 VOLTS AC or 230 VOLTS AC 2 WIRE SINGLE PHASE DISPENSE LOCKOUT 26 39992 042007 SCHEMATIC WIRING DIAGRAM JDF 4S GRN 4 TRANSFORMEI BLU 2 BLK wuyeLu TRANSFORMEI BLU B ic 2 THERMOSTAT BLU BLK g REFRIGERATION SWITCH BLU BLK RED BLK STATION 1 STATION 2 DISPENSE DISPENSE d 1 RED s RED 5 5 s prm fle WHIRED BLK m J d 24 GRY WHUBLK 72 Hol WHIBLK STATION 1 STATION 2 Do DISPENSE DISPENSE z 1 C J9 1 fof BLK 0 J9 2 1 N 1 T COLD WATER i i STATION 3 STATION 4 R THERMISTOR DISPENSE DISPENSE DISPENSE L 1 1 i i 1 B 1 i 0 STATION 4 DISPENSE i R 1 WATER BATH D THERMISTOR J154 ffe STATION 3 STATION 3 STATION 4 K DISPENSE DISPENSE DISPENSE EE x 4 154 STATION 2 DISPENSE i SWITCH WHIBLU top 5 1 i 26 3 STATION 1 i DISPENSE WHVBLU Fem 12 1 SWITCH i J12 3 i i i i i i i i i E ee ee E E E 120 VOLTS AC DISPENSE gj or LOCKOUT 7 SWITCH 230 VOLTS AC de 2 WIRE SINGLE PHASE 27 39992 042007 P3577 1 Install door cover by first plugging the door harness connector into the machine harness connector located at the bottom P3578 P3579 of the machine door 2 Install door cover 3 S
15. aided 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 The size and shape of the hole s made in the supply line s by saddle valves may restrict water flow This equipment must be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International Inc BOCA and the Food Service Sanitation Manual of the Food and Drug Administration FDA For models installed outside the U S A you must comply with the applicable Plumbing Sanitation Code for your area 4 39992 042007 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 J D 5 2 l P3577 J D F 4S P3577 2 Install door cover P3578 JDF 28 JDF 48 P3578 3 Secure the door cover using 5 screws provided JDF 2S JDF 4S 5 39992 042007 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 ier breve ree P3580 1 P3841 FIG 1 Plumbing Connections JDF 2S FIG 2 Plumbing Connections JDF 4S INITIAL FILL CAUTION The di
16. d requires an attachment plug cap rated at least 230 volts ac 15 amp The attachment plug cap must meet with applicable national local electrical codes Refer to the data plate for exact electrical requirements ELECTRICAL HOOK UP CAUTION Improper electrical installation will damage electronic components An electrician must provide electrical service as specified Using a voltmeter check the voltage and color coding of each conductor at the electrical source Confirm that the refrigeration switch on the rear of the dispenser is in the OFF position Connect the dispenser to the power source If plumbing is to be hooked up later be sure the dispenser is disconnected from the power source If plumb ing has been hooked up the dispenser is ready for nitial Fill eR oe N PLUMBING REQUIREMENTS This dispenser must be connected to a COLD WATER 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 regu lator in the line when pressure is greater than 100 psi 690 kPa to reduce it to 50 psi 345 kPa The regulator is also necessary if the water source has pressure fluxuations The main water inlet is a 3 8 9 52 mm MFL connection NOTE At least 18 inches 457 mm of an FDA approved flexible beverage tubing such as reinforced br
17. e Conversion Kit BUNN O MATIC part number 33699 0001 per the instruc tions provided in the kit Attach the concentrate product hose to the appropriate concentrate line located at the rear of the dispens er Attach the other end of the product hose to the product container through an appropriate fitting PRIMING 1 2 3 4 Open the dispenser door Load concentrate per instructions in section titled Loading Close the dispenser door 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 8 39992 042007 OPERATING CONTROLS Refrigeration Switch The refrigeration switch is located on the rear of the dispenser near the center This switch controls power to the water bath pump and relay contacts for the compressor and condenser fan motor P3841 ORANGE JUICE LEMONADE P3583 FIG 9 Product Dispense Switches JDF 2S FIG 10 Product Dispense Switches JDF 4S A Product Dispense Switch Pressing and holding switch will initiate product flow from the respective nozzle releasing the switch will stop the flow gm N wy 7 J B Dispense Lockout Switch JDF 2S shown This switch is located at the bottom front of the dispenser just behind the drip tray It is used to turn ON and OFF the
18. e dispense platform cover Disconnect the dispense platform water line s from the supply line inside the refrigerated cabinet and dis connect the wiring connection s from the cabinet receptacle s Remove the mounting screw s securing the dispense platform s to the cabinet Pull the dispense platform s completely out of the cabinet and place it on a flat work surface Close the dispenser door Remove the 4 screws securing the pump head Gently pull the pump head apart Gently pull the pump tube from around the pump s rotor Release the clamps securing the old pump tubing to the plastic elbows Pull the plastic elbows from the old pump tubing and discard the old pump tubing Insert the plastic elbows into the new pump tubing and secure it with the clamps Gently wrap the new pump tubing around the pump s rotor Reassemble the pump housing onto the platform assembly Repeat steps 10 through 17 for the remaining pump s Replace the dispense platform s into the refrigerated cabinet making sure to reconnect all electrical and water connections Replace the dispense platform cover Turn power on to dispenser Install containers of rinse water run each station and check for leaks Repair leaks as necessary Replace product shelf and product containers Reconnect any connections to ambient product containers Prime the pumps as described in PRIMING in the Initial Fill Section 13 39992 042007
19. ecure the door cover using 5 screws provided P3587 1 P3580 1 4 Place refrigeration switch in the OFF po 5 Connect water supply to machine See 6 Connect power supply to machine See sition Plumbing Requirements Electrical Requirements WES L7 4 ey TO NN a P3582 P3612 P3589 7 Install bath tank fill tube over anozzle as Place the Dispense Lockout switch 9 Hold the dispense switch until water be shown See Initial Fill in the OFF position gins to flow into the tank approx 10 sec onds When tank is full water will begin pour out of the overflow tube Press the dispense button to stop the flow of water 12 Proceed to page 7 in the Operating and Installation manual for calibration instruc tions and charts P3590 1 10 Place the refrigeration switch inthe ON 11 Insert juice containers as shown position 28 39992 042007
20. efective equipment prepaid to an authorized BUNN service location and 3 receiving prior authorization from BUNN that the defective equipment is under warranty THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY WRITTEN OR ORAL EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE The agents dealers or employees of BUNN are not authorized to make modifications to this warranty or to make additional warranties that are binding on BUNN Accordingly statements by such individuals whether oral or written do not constitute warranties and should not be relied upon If BUNN determines in its sole discretion that the equipment does not conform to the warranty BUNN at its exclusive option while the equipment is under warranty shall either 1 provide at no charge replacement parts and or labor during the applicable parts and labor warranty periods specified above to repair the defective components provided that this repair is done by a BUNN Authorized Service Representative or 2 shall replace the equipment or refund the purchase price for the equipment THE BUYER S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS EQUIPMENT WHETHER DERIVED FROM WARRANTY OR OTHERWISE SHALL BE LIMITED AT BUNN S SOLE OPTION AS SPECIFIED HEREIN TO REPAIR REPLACEMENT OR REFUND In no event shall BUNN be liable for any other damage
21. ensing If yes replace valve If no check harness for proper continuity Then replace circuit board if needed 39992 042007 TROUBLESHOOTING PROBLEM Dispense station concentrate only Dispense station water only PROBABLE CAUSE Water solenoid Concentrate out Product pump not pumping Pump not turning 22 REMEDY 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 connection to pump is reversed Switch wires on terminals A Check speed setting on circuit board and increase speed turn clockwise B Check for d c power to pump motor If yes replace motor assy If no check harness for proper con tinuity Then replace circuit board if needed 39992 042007 TROUBLESHOOTING cont PROBLEM Water leak filling drip tray or around dispense deck area Water leaking beneath machine Erratic spray during dispense Dispense nozzle dripping water PROBABLE CAUSE 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 missing or broken Dispense solenoid 23 REMEDY Some expansion normal May fill drip tray during initial ice block formatio
22. ified Follow recommended service procedures Replace all protective shields or safety notices PROBLEM Cold Water Circulation Dispense stations not working Note Cooling failure or excessive cabinet temperatures for more than 4 hours will result in dispense lockout or no dispense Note Reset fault timer by unplug ging unit PROBABLE CAUSE 1 Cabinet cooling fan 2 Bath recirculation pump 3 Restricted water flow to cabinet water coil and bath REMEDY Replace fan 24vdc Note Fan receives power when the dispenser is powered A If not running check refrigera tion switch and wiring for proper continuity B Check for 120V or 230V AC at pump Replace pump Check for kinked hose 39992 042007 TROUBLESHOOTING cont PROBLEM Refrigeration Dispense stations not working Note Cooling failure or excessive bath and cabinet temperatures for more than 4 hours will result in dispense lockout or no dispense Dispenser Locked Out Dispense stations not working Cooling system failure PROBABLE CAUSE 1 Compressor ON OFF switch 2 Dirty condenser filter or fins 3 Condenser fan not running 4 Compressor relay not activat ing 5 Compressor not running 6 Compressor running and not cooling 1 Check Dispense Lockout switch 1 Refrigeration or cold water recir culation system 20 REMEDY Check for ON position or no con tinuity replace switch
23. imum dispense time is 25 seconds Repeat this on all dispense heads as desired Place Dispense Lockout switch back into the ON position This will exit the Portion control set up mode Place a container under the dispense nozzle s and press the dispense button to confirm that the portion size is set correctly Repeat steps 1 8 if any changes are needed 10 Replace splash panel Note The portion control dispense can be cancelled during a dispense by pressing the dispense button again Note If a portion size is not set for a dispense head while in the portion control set up mode that dispense head will remain a push and hold dispense head 10 39992 042007 OPERATING CONTROLS Continued Procedure to return all dispense heads back to Push and Hold mode 1 Unplug dispenser from power source 2 Place Dispense Lockout switch in the OFF position 3 4 For the JDF 2S press and hold either dispense switch while plugging the dispenser into the power source Remove drip tray and splash panel from the front of the machine then replace the drip tray For the JDF 4S press and hold two left dispense switches while plugging the dispenser into the power source Continue holding dispense switch s until all 4 temperature LED s on the circuit board start flashing slowly this takes about 5 seconds Release dispense switch s Press and release any dispense switch three times Place Dispense Lockout switch back into the ON pos
24. ition Replace splash panel and drip tray Place a container under each dispense nozzle and press dispense buttons to confirm machine is operating in push and hold mode P3585 P3845 FIG 12 Temperature LEDs JDF 2S FIG 13 Temperature LEDs JDF 4S 11 39992 042007 CLEANING amp PREVENTIVE MAINTENANCE Daily Rinse Procedure Tools required 32 02 946 ml minimum empty container 1 Open refrigerated compartment door and remove product containers 2 Fill a clean container with warm water and place the container into the cabinet and press it firmly into the bottle adapter opening 3 Close the door place an empty container under the dispensing nozzle and press the dispense switch until clear water flows from the dispense nozzle 4 Repeat steps 1 3 for all dispense stations Daily Parts Washing 1 Remove and wash the dispense nozzle s mixing element s drip tray and drip tray cover in a mild detergent solution Rinse thoroughly 2 Wipe splash panel areas around dispense nozzle s and refrigerated compartment with a clean damp cloth Weekly Semi Automatic Sanitize Process Tools required 1 empty 5 gallon 18 9 L bucket 2 packets of Kay 5 sanitizer and clean empty concentrate container 1 Remove all concentrate from the dispenser and store in a separate refrigerated compartment 2 Fill clean empty concentrate container s with approximately 32 oz 946 ml of hot tap water approximately 140 Deg F 60 Deg C
25. n Inspect or replace fittings clamps o rings solenoids and quick discon nect fittings NOTE Dispense deck area slopes to drain tube that leads to the drip tray Install water pressure regulator and reduce to 50 psi A Check all internal water connec tions B Check internal plumbing con nections Check for routing of condensation tube to water bath Replace mixer Replace dispense deck solenoid 39992 042007 TROUBLESHOOTING PROBLEM Unit is not working Difficulty brixing and or weak bev erage Difficulty brixing and or weak bev erage Difficulty brixing bag in box PROBABLE CAUSE 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 1 Pump tubing 2 Use of portable water pump Vacuum leak 24 REMEDY Check for 120 24 or 230 24 vac If no 24vac reading replace step down transformer If 24 vac present and no LED s lit replace control board Thorough thaw of product before use 35 40 Maintain 20 psi or higher and a minimum flow rate of 3 fl oz sec Over 100 psi install a pressure regulator and set to 50 psi A Perform 3 second water dispense test Factory setting is 1 0 oz sec Acceptable water flow rate is 0 8 to 1 5 oz sec depending on the mix ratio 4 1 B Adjust water to proper mix ra
26. nitiate the sanitize cycle 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 The cycle will start with only one of the dispense stations dispensing Note The cycle will consist of 1 minute dispense time alternating on each station then 5 minutes of soak time then 2 minute dispense time alternating on each station 15 When the above cycle is complete Remove the sanitizing solution and replace with concentrate 16 At each station press and hold the dispense switch until product appears Then dispense one 12 ounce 354 9 ml glass of finished product and discard 17 Wipe internal and external surfaces with a clean damp cloth 12 39992 042007 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 N 23 24 39690 0000 Tube Kit JDF 28 amp JDF 4S 39688 0000 Tube Assembly Open dispenser door Remove all product containers and place them a refrigerated 35 40 degrees F 1 6 4 4 degrees envi ronment Disconnect all connections to ambient products from the bottle adapter Rinse all dispense stations using steps outlined in DAILY RINSE PROCEDURE Disconnect dispenser from power source Remove th
27. spenser must be disconnected from the power source throughout the initial fill except when specified in the instructions CR oo mN 6 Remove drip tray assembly and splash panel from the dispenser Replace the drip tray Connect the water source to the back of the dispenser Pull the fill tube from the dispenser remove the plug and connect it to the dispense nozzle Place the Dispense Lockout switch in the OFF position Connect dispenser to the power source Press and hold the dispense button for the dispense station that the tube is connected to for 10 seconds until you hear the water valve turn on Monitor the water bath fill level until water starts to trickle from the overflow tube Then press the dispense button again to stop the fill process 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 e FIG 4 Initial Fill Hose JDF 4S P3581 1 P3846 FIG 3 Initial Fill Hose 25 6 39992 042007 INITIAL FILL Continued co 10 Replace the splash panel and drip tray 12 Turn ON the refrigeration switch at the back of the dispenser This will start the water bath pump circula tion Check water level in the overflow tube and top off the tank if necessary Step 5 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
28. til the correct water flow rate is achieved 7 Repeat steps 1 through 5 for the remaining dispense positions 8 Place the Dispense Lockout switch back into the ON position m Speed Adjustment Disconnect the dispenser from the power source Remove the drip tray Remove the two screws securing the splash panel and remove the splash panel Locate the adjustment knobs on the circuit board Turn the adjustment knobs clockwise to increase speed and counterclockwise to decrease speed The knob positions directly correspond to dispense station locations Reinstall the splash panel and drip tray and reconnect the dispenser to the power source 14 39992 042007 ADJUSTMENT amp OPTIONAL SETTINGS cont Total Dispense Ratio Set Up Procedure Adjust water flow as described in Water Flow Testing and Adjustment Record water output setting for later reference on each dispense head Place the Dispense Lockout switch in the OFF position Place a measuring container under the dispense nozzle press and release the DISPENSE button 6 times Record the total ounces dispensed Refer to the Brix Ratio chart below to confirm proper total dispensed amount for ratio desired and water output previously recorded To increase or decrease the product output refer to Pump Speed Adjustment section Place the Dispense Lockout switch back into the ON position 1 eus oae dn
29. tio Once water is set adjust motor speed to achieve brix Check for proper brix ratio per prod uct using Total Dispense method and or refractometer method Inspect clean or replace tubing and pump rotor rollers for ease of rotation A Follow plumbing requirements for pressure and flow rate B Source another portable pump or water supply that meets require ments Inspect all lines and connections from bag in box connector to bottle adapter assembly 39992 042007 COOLANT SCHEMATIC DIAGRAM 7 YASNACNOO HOSSAYdNOO NOILOnS Le D 4 b P b 4 4 5 6 J 3901 ssa3ooud HOlVHOdVA3 2 39992 042007 25 SCHEMATIC WIRING DIAGRAM JDF 2S MODELS ____ MODELS GRN BLU gt WHI BLU COMPRESSOR ASSEMBLY uM i LIMIT in WHI BLK BLU BLK REFRIGERATION SWITCH IU amp BLU BLK RED BLK WATER INLET RED BLK LEFT RIGHT DISPENSE DISPENSE 3 1 ffe BED SS RED 3 2 o LWHURED K BLK DISPENSE DISPENSE i i e i i i L l P i B i 0 CABINET R THERMISTOR D RIGHT l DISPENSE i i i WATER BATH THERMISTOR i i WHVBL
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