SINGLE TF DBC W/SMART FUNNEL® S/N SNG0033000 & UP INSTALLATION & OPERATING MANUAL 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 manual or to obtain the illustrated parts catalog, 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.
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.
TABLE OF CONTENTS User Notices................................................................................................................................4 Electrical......................................................................................................................................5 Plumbing Requirements..............................................................................................................7 Operating Controls......................................................
USER NOTICES The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 00658.0000 00831.0000 This equipment must be installed to comply with the International Plumbing Code of the International Code Council and the Food Code Manual of the Food and Drug Administration (FDA). For models installed outside the U.S.A., comply with the applicable Plumbing /SanitationCode. 03408.0004 00656.0000 03409.0004 20201.5600 MAIN ON/OFF SWITCH 39803.0000 37881.0000 00824.
USER NOTICES (cont.) To reduce the risk of electric shock, do not remove or open cover. No user-serviceable parts inside. Authorized service personnel only. Disconnect power before servicing. 37881.0002 ELECTRICAL REQUIREMENTS (Models with power cord) WARNING - The brewer must be disconnected from the power source until specified in Initial Set-Up. Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements.
ELECTRICAL REQUIREMENTS (Models without power cord) WARNING - The brewer must be disconnected from the power source until specified in Initial Set-Up. Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements. 7()4% L1 BLACK .%542!, 200 or 230V , ",!#+ , 2%$ L2 RED GREEN , ",5% GREEN '2%%. '2%%.
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 0°C to 35°C. • Appliance shall not be tilted more than 10° for safe operation.
OPERATING CONTROLSf j f e d h g b a c P2725 (a) MAIN ON/OFF SWITCH This switch, located under the brewer behind the front leg, turns power on and off to all components in the brewer. (b) BATCH SELECTOR SWITCHES Pressing the switch corresponding to the Small, Medium, or Large batch selects the amount of coffee to be brewed. Pressing a different switch after a brew cycle has been initiated does not change the brew batch in progress. Light indicates the selected batch to brew.
INITIAL SETUP CAUTION – The brewer must be disconnected from the power source throughout the initial setup, except when specified in the instructions. 1. Insert an empty funnel into the funnel rails of the brew station. 2. Place an empty server under the funnel. 3. Connect the brewer to the power source. Water will begin flowing into the tank and stop when the tank is filled to its capacity. Display will show PLEASE WAIT...TANK FILLING until tank is filled with water. 4.
CLEANING 1. The use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment. Do NOT clean this equipment with a water jet device. 2. Check and clean each sprayhead. The sprayhead holes must always remain open. NOTE: Any buildup on the sprayhead and fitting may restrict water flow, and impact your coffee brewing. For consistently great coffee, clean sprayhead and fittings weekly with sprayhead cleaning tool (#38227.0000).
GLOSSARY AD CARD: An assembly consisting of computer chips and an instruction label. Used for loading advertising messages into the brewer. BREW LOCKOUT: The inability to initiate a brew if the water temperature is less than the ready temperature programmed into the brewer. BYPASS: The process of diverting a portion of the brew water to the outside of the paper filter so that it does not pass through the coffee grounds. This process is sometimes used to optimize the flavor of the finished brew.
PROGRAMMING Using the menu-driven display on the front of the brewer, the operator has the ability to alter or modify various brewing parameters such as brew temperatures, brew volumes, bypass percentages, etc. This allows for the precise brewing of various flavors of coffee. Programming of the brewer is achieved by entering a certain function. Then, by the use of hidden programming switches, the operator can customize the brewing process to their specifications.
PROGRAMMING THE BREWER The programming of the brewer is divided into two levels. There is one function in Level 1. All other functions are accessed in Level 2. The following function screens are in order of appearance. Each screen will have instructions on how to access, and the procedures to program the various functions of the brewer. IMPORTANT PROGRAMMING NOTES - READ CAREFULLY - To exit the programming mode at any time, press and release the ON/OFF switch located on the front switch panel.
PROGRAMMING THE BREWER (cont.) PROGRAM FUNCTIONS - LEVEL 2 METHOD 2: Using a RECIPE CARD to enter all of the brew settings at one time: If using a coffee name not in the grinder's memory, the customer can obtain a RECIPE CARD from the factory with all the information needed to set up that particular coffee flavor. This includes the COFFEE NAME, BREW VOLUMES, BYPASS PERCENTAGES, PULSE BREW TIMES, PREINFUSION TIMES, and DRIP-OUT TIMES.
PROGRAMMING THE BREWER (cont.) PROGRAM FLOW DIAGRAM LEVEL I Press upper right hidden switch for approximately 2 seconds, until the following screen appears. BREW LOCKOUT? NO DONE YES Returns to normal operating mode LEVEL II Press upper right hidden switch for approximately 4 seconds, until “UNITS” appears on screen.
PROGRAMMING THE BREWER (cont.) PROGRAM FLOW DIAGRAM (Cont.) (D) (C) % (-) BYPASS DONE FULL XX (+) NO 1/4 YES BREW TIME: X:XX 3 BATCHES DONE? NO ENABLE ADS? EASY PULSE SETUP 1/2 (-) YES DONE (+) NO DONE YES SET TEMP: 200°F (-) DONE (+) 3 BATCHES DONE? FULL SET PULSE BREW NO NO 1/2 YES YES 1/4 ENTER TIMES 1st OFF X:XX X:XX LAST NO YES X:XX SET READY 195°F (-) DONE (+) 0 REFILL (-) DONE 155 (+) 5 sec delay 1st ON TIME: X:XX DONE (+) (-) DRIP TIME X.
PROGRAMMING THE BREWER (cont.) PROGRAM FLOW DIAGRAM (Cont.
PROGRAMMING THE BREWER (cont.) UNITS (SETTING UNITS OF MEASURE) This function allows the units of measure to be set in English or Metric readings for all screens. The program is defaulted to English. WARNING: Changing the unit of measure will erase all coffee recipes stored in memory. All preinfusion, pulse times, etc will also be erased. If using this option after information has been stored, it is important to have this information stored elsewhere so that the machine can be reprogrammed.
PROGRAMMING THE BREWER (cont.) SET NEW RECIPE Using a Smart Funnel and a G9-2T DBC or MHG Grinder: This function allows the operator to set BREW VOLUMES, BYPASS PERCENTAGES, PULSE BREW TIMES and DRIP-OUT TIMES for each coffee name preset in the grinder's memory. Certain coffee NAMES are stored in the grinder's memory. When a particular name of coffee is ground into the Smart Funnel, that name and the batch size selected are transferred from the grinder to the programming chip located in the funnel handle.
PROGRAMMING THE BREWER (cont.) SET NEW RECIPES (cont.) 8. Using (-) and (+), set the amount of brew water, in ounces, to be dispensed for that particular batch size. 9. When finished, press another batch size and repeat step 8 for that size. Continue setting all batch sizes. 10. When finished setting all batch sizes, press and release DONE. The display should read 3 BATCH SIZES DONE? 11.
PROGRAMMING THE BREWER (cont.) SET NEW RECIPE Using a RECIPE CARD to load coffee names and brew settings into the Brewer with Smart Funnel: The G9-2T DBC or MHG's memory contains certain coffee names. If the operator uses a coffee name that is not already stored in the grinder's memory, a RECIPE CARD can be obtained from the factory. The RECIPE CARD would include all the information needed to set up that particular coffee name.
PROGRAMMING THE BREWER (cont.) SET NEW RECIPE: If not using a Smart Funnel (with a sensor coil) and/or a G9-2T DBC or MHG Grinder, the brewer will function as a standard Bunn Single TF DBC Brewer: It is possible to operate the brewer without using a Smart Funnel and/or a G9-2T DBC or MHG Grinder. If a standard funnel, or if a non-DBC grinder is used the brewer will automatically select a NO NAME coffee name when the BREW switch is pressed. This means that no name was read from the funnel's handle.
PROGRAMMING THE BREWER (cont.) REVIEW RECIPES/MODIFY RECIPES/SET UP NO NAME COFFEE NAMES: This function has three parts. It allows the operator to view the brew settings for the various coffee names programmed into the brewer. It also allows the operator to modify (change) any of the BREW VOLUMES, BYPASS PERCENTAGES, PULSE BREW TIMES and DRIP-OUT TIMES for a particular coffee name programmed into the brewer.
PROGRAMMING THE BREWER (cont.) BREW OZ (SETTING OR ADJUSTING BREW VOLUMES) This function allows adjustment of the brew volumes for each batch. The indicator signifies volume in ounces per batch. Procedure for modifying recipes - brew ounces: Range: 10.0 oz to 400 oz for all three batch sizes 1. Press and hold the upper right hidden switch until the display reads UNITS. Release the switch, then press and release switch again until the display reads REVIEW RECIPES. 2. Press YES to proceed.
PROGRAMMING THE BREWER (cont.) % BYPASS This function allows adjustment of the amount of water that bypasses the grounds. The number signifies the percentage of the brew volume which does not flow over the coffee grounds. Modifying recipes - bypass percentages: Range: 0% to 90% for all three batch sizes NOTE: If the brewer is already in the % BYPASS screen, it is not necessary to follow steps 1 through 6 in this section, but proceed directly to step 7. 1.
PROGRAMMING THE BREWER (cont.) SET PULSE BREW: This function allows the operator to program the brewer to "pulse” the sprayhead flow on and off continually during a brew cycle (start and stop the flow of water out of the sprayhead). This feature allows the ability to “fine-tune” the brewer for specific flavor profiles. Pulse brewing can be set up for any and all batches.
PROGRAMMING THE BREWER (cont.) SET PULSE BREW (cont.) REVIEW RECIPES? NO YES EXIT TO NEXT FUNCTION SCREEN NO-NAME MODIFYSHOWNEXT ADVANCES TO ALL OTHER COFFEE NAMES PROGRAMMED IN THE BREWER'S MEMORY SCREEN DISPLAYED BREW OZ: XX.XX 3 BATCHES DONE? % BYPASS XX.
PROGRAMMING THE BREWER (cont.) SET PULSE BREW - EASY PULSE SETUP NOTE: The procedure to enter the PULSE BREW function must be performed prior to following the steps listed below. 1. The display should read BREW TIME: X.XX and a batch size indicator will be flashing. 2. Using (-) and (+), set the desired brew time for the selected batch size. 3. When finished, select another batch size to be set by pressing the switch next to the indicator light. Repeat step 2 for each batch size to be set. 4.
PROGRAMMING THE BREWER (cont.) SET PULSE BREW - ENTER TIMES NOTE: The procedure to enter the PULSE BREW function must be performed prior to following the steps listed below. 1. Press and release YES. The display should now read EASY PULSE SETUP. 2. Press and release NO. The display will read ENTER TIMES? 3. Press YES to proceed. The display should now read 1st ON TIME X:XX. 4. Using (-) and (+) set the amount of time the flow of water into the funnel will be on. 5. When finished, press DONE.
PROGRAMMING THE BREWER (cont.) SET PREINFUSION: This function sets the brewer to turn the sprayhead flow on for a preset time (1st ON TIME) followed by a preset spray pause (OFF TIMES) and then turn the spray on continuously until the brew volume is completed. This is a special case of pulse brew. It is not possible to set a batch size to have both pulse brew and preinfusion. One or the other (or neither) must be chosen.
PROGRAMMING THE BREWER (cont.) DRIP TIME (now displayed on "non" funnel lock units as well) This function allows the setting or modification of the funnel locks to stay engaged after the end of a brew cycle. This ensures that the funnel cannot be removed until after the liquid has emptied out of the funnel. Procedure to modify drip times: Range: OFF to 10 minutes for all three batch sizes.
PROGRAMMING THE BREWER (cont.) ASSIGN RECIPES This function allows for assigning a coffee name other than NO-NAME to the BREW switch. Procedure to assign recipes: 1. Press and hold the upper right hidden switch until the display reads UNITS. Release the switch, then press and release switch until the display reads ASSIGN RECIPE ?. 2. Press YES to assign a recipe to the BREW switch. 3. Use (-) and (+) to select recipe which you want to assign to the BREW switch. 4.
PROGRAMMING THE BREWER (cont.) 3. When finished, press and release DONE to save the new setting, exit the SET READY function and advance to the next function screen, REFILL. Another alternative is to press the ON/OFF switch located on the front switch panel to exit the SET READY function and return to the MAIN SCREEN. SET TEMP (cont,) SET TEMP: XXX° (-) DONE (+) P2721 Procedure to set brew temperature: 1. Press and hold the upper right hidden switch until the display reads UNITS.
PROGRAMMING THE BREWER (cont.) 3. When finished, press and release DONE. This saves the new setting and advances to the next function screen, CALIBRATE FLOW. Another alternative is to press the ON/OFF switch located on the front switch panel to exit the BYPASS OZ/M function and return to the MAIN SCREEN. SPRAY OZ/M (cont.) SPRAY OZ/M: XXX (-) DONE (+) P2721 Procedure to adjust the flow rate setting: 1. Press and hold the upper right hidden switch until the display reads UNITS.
PROGRAMMING THE BREWER (cont.) CALIBRATE FLOW (cont.) 5. Press and release the YES pad. The display should read CONTAINER READY? If the container is under the funnel, press YES. The display should read CALIBRATE BYPASS .. PRESS BREW TO START. 6. Press and release the BREW switch. The display should read CALIBRATE BYPASS .. 60 SEC TO FINISH. The 60 second timer on the display will count down to zero. When the counter reaches zero, the display will change to ENTER OZ.
PROGRAMMING THE BREWER (cont.) CALIBRATE FLOW (cont.) 7. Measure the amount of water in the container, and using (-) or (+), adjust the amount on the display to match the amount in the container. Then press DONE. 8. The display should now read NEW BYPASS FLOW, along with the correct flow rate of the bypass in ounces per minute. After about 5 seconds, the display will return to the CALIBRATE FLOW screen. 9.
PROGRAMMING THE BREWER (cont.) SERVICE TOOLS This function allows the testing of individual components and the ability to check switches for proper function. This function also tests the Soft Heat server's status on the brewer (in place or removed), and the funnel sensor coil's frequency (diagnostic tool for troubleshooting purposes only).
PROGRAMMING THE BREWER (cont.) SERVICE TOOLS (cont.) 14. Press OFF to retract the funnel lock. 15. Press NEXT to advance to the next component to be tested. 16. To test REFILL VALVE, press ON. If the refill valve is functional, the sound of the valve operating will be heard. 17. Press OFF to end testing of refill valve. 18. Press NEXT to advance to the next component to be tested. 19. To test TANK HEATER, connect a voltmeter across the tank heater to check for voltage. 20. Press ON.
PROGRAMMING THE BREWER (cont.) FACTORY DEFAULTS This function allows the operator to erase all of the previously entered recipes and ad messages. Factoryset default values will replace all previous settings. SEL BREWER TYPE? NO YES ThermoF SoftHeat DONE FACTORY DEFAULTS NO YES EXIT WILL REPLACE ALL BREW SETTINGS ARE YOU SURE? NO YES P2312 EXIT REPLACE Procedure to set factory defaults: 1. Press and hold the upper right hidden switch until UNITS appears. Release the switch.
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. • • • • • • • WARNING • • • • Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.
TROUBLESHOOTING (cont.) Screen Displayed TEMPERATURE TOO LOW CHECK FUNNEL FOR FRESH COFFEE Possible Cause Troubleshooting Procedures 1. Water temperature in the tank does not meet the SET READY TEMPERATURE. (a) Wait for the brewer to heat to the proper temperature. 1. Brew funnel was not removed after the previous brew cycle was finished. Remove funnel, check contents, and insert back into the funnel rails. OR Press BREW to start a brew cycle without removing the funnel.
TROUBLESHOOTING (cont.) Screen Displayed BREW STOPPED! IS SWITCH OFF? Possible Cause Troubleshooting Procedures 1. ON/OFF switch was pressed after the brew cycle was started. To resume brewing, press BREW again. The brew cycle resumes form the point it was interrupted. OR TO FINISH: PRESS BREW Press ON/OFF to terminate the brew cycle. TO CANCEL PRESS ON/OFF HEATING TIME TOO LONG 1. Tank Heater failure Service Required 2. Triac Failure Service Required 3.
TROUBLESHOOTING (cont.) Screen Displayed FILL TIME TOO LONG Possible Cause Troubleshooting Procedures 1. Water shut off to brewer Check water supply shut-off 2. Inlet Solenoid Valve failure Service required 3. Control Board Failure Service required 1. Temperature Sensor Probe wire(s) broken or not making connection. Check wire and connection of both black and white wires of temperature probe. 1. Temperature Sensor Probe wire(s) shorted to housing, or to each other.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedure Equipment will not operate. 1. No power or incorrect voltage. Measure the voltage at the terminal block and confirm that it matches the voltage specified on the brewer data plate within +/- 10%. Brew cycle will not start. 1. No water Check plumbing and shut-off valves 2. ON/OFF switch 3. Brew switch 4. Brew Valve 5. Electronic Control Board Automatic refill will not operate or display shows FILL TIME TOO LONG 1. No water 2.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedure Automatic refill will not operate or display shows FILL TIME TOO LONG (cont.) 3. Refill Probe or Sensitivity Setting Check the sensitivity setting. Refer to the Refill function. If the left three digit number is less than the right number, the machine “thinks” it is full and the refill valve should be off. If the left number is larger than the right, then the refill valve will automatically be turned on to fill the tank.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Water flows into tank continuously with power applied to brewer. 1. Refill Probe or Sensitivity Setting Check the sensitivity setting. Refer to the Refill function. If the left three digit number is less than the right number, the machine “thinks” it is full and the refill valve should be off. If the left number is larger than the right, then the refill valve will automatically be turned on to fill the tank.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Water will not heat or display shows HEATING TIME TOO LONG (cont.) 3. Triac Remove power from the brewer. Connect a voltmeter across one of the tank heaters. Reapply power to the brewer and refer to Testing Individual Components. If the full supply voltage is measured when the tank heater is turned on, and zero voltage is measured with the triac off, then the triac is good.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Spitting or unusual steaming from sprayhead or air vents. (Water too hot) (cont.) 3. Electronic control board Perform the previous procedure for testing triacs. If the voltage measured is very low or zero, then substitute a control board known to be in good working order. Inconsistent beverage level in server. 1. Strainer (A) Direction of flow arrow must be pointing towards the brewer.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Consistently high or low beverage level in server. 1. Brew Volume adjustment Adjust the brew volume as required to achieve the recommended volume for each brew cycle. Dripping from sprayhead. 1. Brew Valve Repair or replace leaky valve. Water overflows filter. 1. Type of paper filters BUNN paper filters should be used for proper extraction. 2. No sprayhead Check sprayhead 1.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Weak beverage (cont.) 6. Incorrect Recipe Consider adjusting bypass percentage, preinfusion, or pulse brew. Contact Bunn-O-Matic for suggestions. Brewer is making unusual noises. 1. Solenoid (Inlet) The nut on back of the solenoid must be tight or it will vibrate during operation 2. Plumbing lines Plumbing lines should not be resting on the counter top. 3. Water Supply (A) The brewer must be connected to a cold water line.
BLK WHI L1 N GRN L2 RED SCHEMATIC WIRING DIAGRAM SINGLE TF DBC BLK-14 BLK-14 RED-14 RED-14 RED-14 TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY BLK-14 TANK HEATER SWITCH UNIT ASSEMBLY REFILL SOL WHI BYPASS FUNNEL SENSOR VIO WHI SOL WHI/VIO BREW VIO SOL WHI WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE TF DBC L1 BLK-14 L2 RED-14 BLK-14 RED-14 GRN TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 TANK HEATER RED-14 SWITCH UNIT ASSEMBLY REFILL SOL RED BYPASS FUNNEL SENSOR RED SOL VIO WHI/VIO BREW VIO SOL RED WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE TF DBC L1 N TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 TANK HEATER WHI-14 SWITCH UNIT ASSEMBLY REFILL SOL WHI BYPASS FUNNEL SENSOR WHI SOL VIO WHI/VIO BREW VIO SOL WHI WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE TF DBC L1 L2 RED BLK GRN MAIN ON/OFF SWITCH (Late Models only) RED-14 RED-14 RED-14 BLK-14 BLK-14 BLK-14 TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 TANK HEATER RED-14 SWITCH UNIT ASSEMBLY REFILL SOL FUNNEL SENSOR RED BYPASS VIO RED SOL WHI/VIO BREW VIO SOL RED WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
