SINGLE ® SH DBC ® WITH SMART FUNNEL® Software Version 1.15 and all ending __.15 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 and Plumbing Requirements........................................................................................5 Operating Controls.......................................................................................................................6 Initial Setup.........................................................................
USER NOTICES The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. WARNING • DO NOT OVERLOAD CIRCUIT. • ALWAYS ELECTRICALLY GROUND THE CHASSIS. • DO NOT DEFORM PLUG OR CORD. • FOLLOW NATIONAL AND LOCAL ELECTRICAL CODES. • KEEP COMBUSTIBLES AWAY. FAILURE TO COMPLY RISKS EQUIPMENT DAMAGE, FIRE OR SHOCK HAZARD. READ THE ENTIRE OPERATING MANUAL BEFORE USING THIS PRODUCT 00986.0000F 10/07 ©1994 Bunn-O-Matic Corporation 00986.0000 00658.0000 03408.0004 37881.
ELECTRICAL REQUIREMENTS 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.
CE REQUIREMENTS • This appliance must be installed in locations where it can be overseen by trained personnel. • For proper operation, this appliance must be installed where the temperature is between 5°C to 35°C. • Appliance shall not be tilted more than 10° for safe operation. • An electrician must provide electrical service as specified in conformance with all local and national codes. • This appliance must not be cleaned by water jet.
OPERATING CONTROLS e j f b N/O H FF O IN C MA WIT S g a P3853 h d c P2437 OPERATING CONTROLS (a) MAIN ON/OFF SWITCH This switch, located under the brewer behind the right 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.
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.
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. 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 pad 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 flavor not in the G92T DBC'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 name of the coffee, BREW VOLUMES, BYPASS PERCENTAGES, PULSE BREW TIMES, PREINFUSION TIMES, and DRIP-OUT TIMES.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE Using a Smart Funnel and a G92T DBC Grinder: This function allows the operator to set BREW VOLUMES, BYPASS 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 G92T DBC's memory.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPES (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 3 BATCH SIZES DONE? 11.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPES (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 three 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 3 BATCHES DONE. 25.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE Using a RECIPE CARD to load coffee names and brew settings into the SINGLE SH DBC with Smart Funnel®: The G92T DBC'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: If not using a Smart Funnel (with a sensor coil) and/ or a G92T DBC Grinder, the brewer will function as a standard BUNN Single Brewer: It is possible to operate the brewer without using a Smart Funnel and/or a G92T 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 pad is pressed. This means that no name was the read from the funnel's handle.
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 coffee names programmed into the brewer. It also allows the operator to modify (change) any of the BREW VOLUMES, BYPASS PERCENTAGES, PULSE BREW TIMES, PRE-INFUSION TIMES and DRIP-OUT TIMES for a particular coffee name programmed into the brewer.
PROGRAMMING FUNCTIONS - LEVEL 2 (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 ® pad until the display reads SET NEW RECIPES. Release the ® pad. Press the ® until the display reads REVIEW RECIPES. 2. Press YES to proceed.
PROGRAMMING FUNCTIONS - LEVEL 2 (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 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 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 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 container so that the spray and coffee bed can be viewed. (See Fig. 1) 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.
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 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 three 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 (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 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. 2. To adjust the brew temperature, press (-) to decrease or (+) to increase the brew temperature. 3. When finished, press and release DONE to save the new setting, exit the SET TEMP function and advance to the next function screen, SET READY.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 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 bypass by dispensing both separately for one minute. The volumes are then entered in ounces per minute. (Oz/M) Procedures to calibrate the sprayhead flow rate: 1. Place a container, accurately graduated in ounces, and with a minimum capacity of 60 ounces, beneath the funnel on the brewer. 2. Press and hold the ® pad until the display reads SET NEW RECIPES.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) CALIBRATE FLOW (cont.) Procedures to calibrate the bypass flow rate: 1. Place a container, accurately graduated in ounces, and with a minimum capacity of 60 ounces, below the funnel on the brewer. 2. Press and hold the ® pad until the display reads SET NEW RECIPES. 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 DETECT (optional) 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.) SERVER DETECT This function allows the operator to prevent the start of a brew cycle if a Soft Heat server is not positioned correctly on the brewer. SERVER DETECT ? NO DONE YES SERVICE TOOLS This function allows the testing of individual components and the ability to check switches for proper function.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE TOOLS (cont.) Testing individual components (outputs): This will allow the operator to test the operation of individual components and outputs of the brewer. The components that can be individually tested are as follows: Brew Valve Bypass Valve Funnel Lock (Optional) Server Refill Valve Tank Heaters Procedure to test components (outputs): 1. Place brew funnels into rails on the brewer. 2. Place a Soft Heat® server beneath the brew funnel. 3.
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE TOOLS (cont.) 5. The display should read TEST OUTPUTS. 6. In TEST OUTPUTS screen, press NO. This advances to TEST SWITCHES. 7. Pressing NO in this screen will advance to the next function. Press YES in the TEST SWITCHES screen to test the switches. The display will read NOTHING PRESSED. 8. From this screen, press any of the switches on the front of the brewer. While the switch is pressed, the display shows the name of that switch.
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. Brew Lockout BREW VOLUMES: Small Batch Medium Batch Large Batch FACTORY DEFAULTS NO YES BYPASS PERCENTAGE: Small Batch Medium Batch Large Batch EXIT WILL REPLACE ALL BREW SETTINGS YES 64 oz. 128 oz. 192 oz.
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 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 DETECT function is activated (on). Disable the FUNNEL DETECT function. See page 31 for procedure. TEMPERATURE TOO LOW 1. Water temperature in the tank does not meet the SET READY TEMPERATURE.
TROUBLESHOOTING (cont.) Screen Displayed BREW STOPPED! SERVER REMOVED? Possible Cause Troubleshooting Procedure 1. Soft Heat Server was moved out of position after the brew cycle was started. To resume brewing, correctly position the Soft Heat Server and press BREW again. The brew cycle resumes from the point it was interrupted. TO FINISH: PRESS BREW OR Press ON/OFF to terminate the brew cycle. TO CANCEL PRESS ON/OFF BREW STOPPED! IS SWITCH OFF? 1.
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 33 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 28. 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 28. 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 33. 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.
WHI BLK GRN L2 RED L1 N SCHEMATIC WIRING DIAGRAM SINGLE SH with SMART FUNNEL (DBC) LIMIT THERMOSTAT BLK-14 BLK-14 MT 1 BLU -14 MT2 BLK-14 BLK-14 BLK-14 RED-14 RED-14 RED-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY TANK HEATER TRIAC SWITCH UNIT ASSY SHIELD FUNNEL SENSOR VIO WHI/VIO VIO SOL WHI/GRN CONTROL PC BOARD GRY WHI/VIO WHI WATER LEVEL PROBE TEMP PROBE SOL SOL BREW RED TAN YEL BLK PNK BLK BLK WHI/RED WHI REFILL BYPASS RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE SH DBC with SMART FUNNEL L1 B L K N TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT 1 BLU -14 MT2 WHI-14 TANK HEATER SWITCH UNIT ASSY SHIELD FUNNEL SENSOR VIO WHI/VIO VIO SOL WHI/GRN CONTROL PC BOARD GRY WHI/VIO WHI WATER LEVEL PROBE TEMP PROBE SOL SOL BREW RED TAN YEL BLK PNK BLK BLK WHI/RED WHI REFILL BYPASS WHI RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE SH DBC (W/SMART FUNNEL) L1 L2 GRN/YEL BLK RED EMI FILTER RED BLK LIMIT THERMOSTAT BLK-14 TRIAC BLK-14 MT 1 BLU -14 MT2 THERMAL SAFETY FUSE THERMAL SAFETY FUSE RED TANK HEATER BLK TOUCH SWITCH ASSMBLE L2 L1 L4 L3 C1 C2 D1 C3 D2 A1 VIO D3 A2 SOL B1 WHI REFILL WHI/GRN GRY WHI/VIO B2 SOL SOL BREW RED TAN YEL BLK BYPASS WHI RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE SH DBC (W/SMART FUNNEL) L1 L2 GRN/YEL BLK RED EMI FILTER RED BLK LIMIT THERMOSTAT BLK-14 TRIAC BLK-14 MT 1 BLU -14 MT2 THERMAL SAFETY FUSE THERMAL SAFETY FUSE RED TANK HEATER BLK TOUCH SWITCH ASSMBLE L2 L1 L4 L3 C1 C2 D1 C3 D2 A1 VIO D3 A2 SOL B1 WHI REFILL WHI/GRN GRY WHI/VIO B2 SOL SOL BREW RED TAN YEL BLK BYPASS WHI RED RED N.C.
