Single MultiBrewWISE ®DBC® WITH SMART FUNNEL® SMART F U NNEL DISCONTINUED VERSION The information in this manual is no longer current. ED A TE IC 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.
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 Requirements...............................................................................................................6 Plumbing Requirements..............................................................................................................7 Operating Controls................................................................
USER NOTICES The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 37881.0000 ! WARNING Fill water tank before turning - on thermostat or connecting appliance to power source. Use only on a properly protected circuit capable of the rated load. Electrically ground the chassis. Follow national/local electrical codes. Do not use near combustibles.
USER NOTICES (continued) 00658.0000 03409.0004 03408.0004 12364.0000 20201.
ELECTRICAL REQUIREMENTS WARNING - If the power cord is ever damaged, it must be replaced by the manufacturer or its service agent with a special cord available from the manufacturer or its service agent in order to avoid a hazard. Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements. BLK RED L1 200 or 230V. A.C.
PLUMBING REQUIREMENTS This brewer must be connected to a cold water system with operating pressure between 20 and 90 psi (138 and 620 kPa) from a 1⁄2" or larger supply line. A shut-off valve should be installed in the line before the brewer. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water inlet fitting is 1⁄4" flare or female quick connect.
OPERATING CONTROLS h d e f b a g c i P3200-1 OPERATING CONTROLS (a) BATCH SELECTOR PADS Pressing the pad corresponding to the recipe selects the amount of beverage to be brewed. Pressing a different pad after a brew cycle has been initiated does not change the brew in progress. Light indicates the selected recipe to brew. (b) ON/OFF PAD Pressing the ON/OFF pad alternately turns the brewer on and off. Pressing this pad during the brew cycle will interrupt the brew cycle, stopping the flow of water.
OPERATING CONTROLS (cont.) 4. Wait approximately twenty minutes for the water in the tank to heat to the proper temperature. Display will show READY TO BREW...WATER TEMP: XXX˚ when tank is at operating temperature. 5. Place a small vessel beneath the faucet and open the faucet handle. Release it when you hear the tank refilling. 6. Water volumes have been preset at the factory. Refer to adjustments for the Set Brew Volumes section of this manual should the volume need to be increased or decreased. 7.
GLOSSARY AD CARD: An assembly consisting of a computer chip 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. CHIP: A computer chip containing either recipes for specific coffee flavors or advertising messages which are read by the sensing coils on the brewer.
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 PROGRAMMING FUNCTIONS - FLOW CHART PROGRAMMING FUNCTIONS - LEVEL 1 BREW LOCKOUT? NO DONE YES PROGRAMMING FUNCTIONS - LEVEL 2 WARMER OFF: OFF (-) DONE (+) SET NEW RECIPE? NO YES REVIEW RECIPES? NO YES ENABLE ADS? NO DONE YES SET TEMP: 93° (-) DONE (+) SET READY: 91° (-) DONE (+) 0 REFILL-> 155 (-) DONE (+) SPRAY ML/M: XXXX (-) DONE (+) DILUT ML/M: XXX (-) DONE (+) CALIBRATE FLOW? NO YES BREW COUNTERS? NO YES FUNNEL LOCKOUT? NO DONE YES UNITS METRIC ENGLISH SERVICE TOOLS?
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/LOWER" pad located on the front switch panel.
PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 There are three methods of programming the various brewing parameters of the Single Multi-BrewWISE DBC with Smart Funnel brewer. METHOD 1: Using a Smart Funnel and a Single Multi-BrewWISE DBC Grinder: Certain coffee NAMES are stored in the Multi-BrewWISE DBC Grinder's memory.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) WARMER OFF: This function allows the operator to set a predetermined time for the warmer to shut off in a range from 15 minutes to 6 hours in increments of 15 minutes. Procedures to set the warmer shut off time: 1. Press and hold the ® pad until the display reads WARMER OFF. 2. Pressing (-) in this screen will count down the shut off time starting at 6:00 hours and decrease in increments of 0:15 minutes. 3.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE - METHOD 1 Using a Smart Funnel and a Single Multi-BrewWISE DBC Grinder: This function allows the operator to set BREW VOLUMES, DILUTION PERCENTAGES, PULSE BREW TIMES, PREINFUSION TIMES and DRIP-OUT TIMES for each coffee name preset in the grinder's memory. Certain coffee NAMES are stored in the MULTIBREWWISE DBC Grinder's memory.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPES - METHOD 1 (cont.) 8. Using (-) and (+), set the amount of brew water, in ounces, to be dispensed over the grounds 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 BATCHES DONE? 11.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPES - METHOD 1 (cont.) 22. Using (-) and (+), set the amount of time the brew cycle will delay (after the presoak cycle shuts off) before resuming brewing. 23. When finished, press another batch size and repeat until all batch sizes are set. 24. When finished setting all batch sizes, press DONE. The display will show the ON and OFF TIMES that were entered for a particular batch size. After a 5 second delay, the display should read BATCHES DONE. 25.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE - METHOD 2 Using a RECIPE CARD to load coffee names and brew settings into the Single Multi-BrewWISE DBC with Smart Funnel: The Multi-BrewWISE DBC Grinder'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 FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE - METHOD 3 If not using a Smart Funnel (with a sensor coil) and/or a Single Multi-BrewWISE DBC Grinder, the brewer will function as a standard BUNN Single Multi-BrewWISE DBC Brewer: It is possible to operate the brewer without using a Smart Funnel and/or a DBC Grinder. If a standard funnel, or if a non-DBC grinder is used the brewer will automatically select a NO NAME coffee flavor when the "BREW" pad is pressed.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) REVIEW RECIPES/MODIFY RECIPES/SET UP NO NAME COFFEE FLAVORS: This function has three parts. It allows the operator to view the brew settings for the various beverage names programmed into the brewer. It also allows the operator to modify (change) any of the BREW VOLUMES, DILUTION VOLUMES, PULSE BREW TIMES, PRE-INFUSION TIMES and DRIP-OUT TIMES for a particular beverage name programmed into the brewer.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) BREW MI: (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: 100.0 ml to 8000 ml for all batch sizes 1. Press and hold the ® pad until the display reads WARMER OFF. Release the ® pad. Press the ® until the display reads REVIEW RECIPES. 2. Press YES to proceed.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) % DILUTION This function allows adjustment of the amount of water that flows passed the grounds. The number signifies the percentage of the brew volume which does not flow over the coffee grounds/tea. Modifying recipes - dilution percentages: Range: 0% to 90% for all batch sizes NOTE: If the brewer is already in the % DILUTION screen, it is not necessary to follow steps 1 through 6 in this section, but proceed directly to step 7. 1.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET PULSE BREW: This function allows the operator to program the brewer to "pulse” the sprayhead flow on and off 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 FUNCTIONS - LEVEL 2 (cont.) SET PULSE BREW (cont.) REVIEW RECIPES? NO YES EXIT TO NEXT FUNCTION SCREEN NO-NAME MODIFY NEXT ADVANCES TO ALL OTHER RECIPE NAMES PROGRAMMED IN THE BREWER'S MEMORY SCREEN DISPLAYED BREW OZ: XX.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew - BY EXAMPLE: 1. This display should read CONTAINER READY? Place a container under the sprayhead. Place a brew funnel containing a filter and grounds on top of the GPR server so that the spray and coffee bed can be viewed. 2. Choose the batch size to be set by pressing the pad next to the indicator light on the left brew side. The batch size indicator selected will be flashing. 3. If everything is in place, press YES in the CONTAINER READY? screen.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew - ENTER TIMES: NOTE: No water should flow from the brewer during this set-up process. 1. This display should read 1ST ON TIME X:XX. Choose the batch size to be set by pressing the pad next to the indicator light on the front panel. The batch size indicator selected will be flashing. 2. Adjust the 1ST ON TIME using (-) and (+). When finished, press DONE. (a) 3. The display will now read OFF TIME X:XX. Adjust the OFF TIME using (-) and (+).
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET PREINFUSION This function allows the operator to set an initial soaking of the grounds/tea and a delay time, before the complete brew cycle starts. Procedure for Modifying preinfusion times: Range: On time - off to 4 minutes Off time - off to 4 minutes for all batch sizes NOTE: If the brewer is already in the SET PREINFUSION screen, it is not necessary to follow steps 1 through 9 in this section, but proceed directly to step 10. 1.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) DRIP TIME This function allows the setting of a period of time at the end of a brew cycle to ensure that liquid has emptied out of the funnel prior to returning to READY TO BREW. Procedure to modify drip times: Range: OFF to 10 minutes for all batch sizes. NOTE: If the brewer is already in the DRIP TIMES screen, it is not necessary to follow steps 1 through 10 in this section, but proceed directly to step 11. 1.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABLE ADS? This function allows the operator to choose whether or not to display the advertising message that was entered into the brewer with an AD CARD. This message will be displayed when the brewer is not in use. ENABLE ADS? NO DONE YES Procedure to Enable/Disable Ads: 1. Press and hold the ® pad until the display reads WARMER OFF. Release the ®. Press and release the ® until the display reads ENABLE ADS.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure to adjust the flow rate setting: REFILL - Range: 20 to 230 This function allows the operator to adjust the sensitivity of the refill circuit. This is mainly a troubleshooting feature. Water in different geographical locations can have different conductivities. By adjusting the sensitivity of the refill circuit, this will allow the brewer to operate under various water conditions.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) CALIBRATE FLOW This function allows the operator to enter the actual flow rate of the sprayhead and the dilution by dispensing both separately for one minute. The volumes are then entered in milliliters per minute. (MI/M) Procedures to calibrate the sprayhead flow rate: 1. Place a container, accurately graduated in milliliters, and with a minimum capacity of 1800 milliliters, beneath the funnel on the brewer. 2.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) CALIBRATE FLOW (cont.) Procedures to calibrate the dilution flow rate: 1. Place a container, accurately graduated in ounces, and with a minimum capacity of 1800 milliliters, below the funnel on the brewer. 2. Press and hold the ® pad until the display reads WARMER OFF. Release the ® pad. Press and release the ® pad until the display reads CALIBRATE FLOW. 3. Press and release YES to advance to the SPRAYHEAD CAL? function screen.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) BREW COUNTERS This function allows the operator to track the number of brew cycles completed. There is one resettable counter, and one life counter that is not resettable. FUNNEL LOCKOUT This function allows the operator to prevent the start of a brew cycle if a Smart Funnel is not positioned correctly in the funnel rails.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET UNITS This function allows the operator to change the units of measure from METRIC to ENGLISH. UNITS METRIC ENGLISH Procedures to set UNITS: 1. Press and hold the ® pad until the display reads WARMER OFF. Release the ®. Press and release the ® pad until the display reads UNITS. 2. The METRIC or ENGLISH flashes to indicate the current selection. 3. Changing the current selection will cancel all previously entered recipes and return to FACTORY DEFAULT values. 4.
PROGRAMMING FUNCTIONS - LEVEL 2 (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 the funnel sensor coil's frequency (diagnostic tool for troubleshooting purposes only). Testing individual components (outputs): This will allow the operator to test the operation of individual components and outputs of the brewer.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE TOOLS (cont.) 15. Press NEXT to advance to the next component to be tested. 16. To test WARMER, press ON. If the warmer is functional, the light on the lower right corner of the warmer switch will illuminate. 17. Press OFF to end testing of server. 18. Press NEXT to advance to the next component to be tested. 19. To test REFILL VALVE, press ON. If the refill valve is functional, the sound of the valve operating will be heard. 20.
PROGRAMMING FUNCTIONS - LEVEL 2 (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.
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. All electronic components have 120 - 240 volt ac and low voltage dc potential on their terminals.
TROUBLESHOOTING (cont.) Screen Displayed NO FUNNEL PRESENT TEMPERATURE TOO LOW CHECK FUNNEL FOR FRESH COFFEE Possible Cause Troubleshooting Procedure 1. SMART FUNNEL not fully inserted into the funnel rails. Position the funnel so that the sensor is directly beneath the sensor coil on the brewer. 2. Not using a SMART FUNNEL, and the FUNNEL LOCKOUT function is activated (on). Disable the FUNNEL LOCKOUT function. See page 30 for procedure. 1.
TROUBLESHOOTING (cont.) Screen Displayed BREW STOPPED! IS SWITCH OFF? Possible Cause Troubleshooting Procedure 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 CHECK HEATING CIRCUIT 1. Tank Heater failure Service Required 2. Triac Failure Service Required 3.
TROUBLESHOOTING (cont.) Screen Displayed FILL TIME TOO LONG Possible Cause Troubleshooting Procedure 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 Test the ON/OFF switch. Refer to the switch test procedures on page 37. 3. Brew switch Test the BREW switch.
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 on page 31. 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.
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 on page 31. 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 on page 36. 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 above 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/flow control (.750 GPM) (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.
SCHEMATIC WIRING DIAGRAM SINGLE MULTI-BrewWise L1 L2 GRN/YEL RED BLK EMI FILTER WHI BLK LIMIT THERMOSTAT BLK-14 TRIAC BLK-14 MT 1 BLU -14 MT2 WHI TANK HEATER BLK TOUCH SWITCH ASSEMBLY L2 L1 L4 L9 L8 L7 L6 L3 C1 C2 D1 A3 D2 A1 D3 A2 B1 B2 SOL A5 BYPASS RED RED BLK WHI WHI BREW N.C.
SCHEMATIC WIRING DIAGRAM SINGLE MULTI-BrewWise L1 L2 GRN/YEL RED BLK EMI FILTER WHI BLK LIMIT THERMOSTAT BLK-14 TRIAC BLK-14 MT 1 BLU -14 MT2 THERMAL SAFETY FUSE THERMAL SAFETY FUSE WHI TANK HEATER BLK TOUCH SWITCH ASSEMBLY L2 L1 L4 L9 L8 L7 L6 L3 C1 C2 D1 A3 D2 A1 D3 A2 B1 B2 SOL A5 BYPASS RED RED BLK WHI WHI BREW N.C.
