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- Single TF DBC
- Installation & Operating Manual
Bunn Single TF DBC Installation & Operating Manual
Summary of Single TF DBC
Page 1
Bunn-o-matic corporation post office box 3227 springfield, illinois 62708-3227 phone: (217) 529-6601 fax: (217) 529-6644 www.Bunnomatic.Com installation & operating manual dual ™ tf dbc ™ with smart funnel ® 35058.0000e 04/05 ©2002 bunn-o-matic corporation.
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Page 2 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 re...
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Page 3 table of contents user notices .............................................................................................................................. 4 electrical and plumbing requirements ...................................................................................... 5 operati...
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Page 4 00656.0000 00831.0000 00658.0000 20201.5600 user notices the notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 10044.0000 03408.0000 03409.0000 ! Caution do not connect to a circuit operating at more than 150 volts to ground. 27508.0000 35058 12110...
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Page 5 electrical hook-up caution – improper electrical installation will damage electronic components. 1. An electrician must provide electrical service as specified. 2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source. 3. Remove the front, lower left...
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Page 6 a a b b c c d e f operating controls operating controls (a) batch selector pads pressing the pad corresponding to the small, medium, or large batch selects the amount of coffee to be brewed. Pressing a different pad after a brew cycle has been initiated does not change the brew batch in progr...
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Page 7 35058 042105 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 one of the brew stations. 2. Place an empty server under the funnel. 3. Connec...
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Page 8 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: ...
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Page 9 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 proces...
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Page 10 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 ...
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Page 11 main screen this screen will be shown when the brewer is ready for use. The screen displays the water tempera- ture in the tank. When the water in the tank reaches the correct set temperature, the display will change from heating to ready to brew. Programming lockout switch (mounted on main ...
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Page 12 programming the brewer (cont.) program functions - level 2 there are three methods of programming the various brewing parameters of the dual™ tf with smart funnel ® brewer. Method 1: using a smart funnel ® and a g9-2t dbc grinder: certain coffee names are stored in the g9-2t dbc's memory. Wh...
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Page 13 p2299 programming functions - level 2 (cont.) procedure for setting the recipe: note: before beginning setup, place a server beneath the left brew funnel. 1. Insert the funnel into the grinder and select a batch size to grind. It is not necessary to have coffee beans in the hopper(s) in orde...
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Page 14 programming functions - level 2 (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 re- peat step #8 for that size. Continue setting all batch sizes. 10. ...
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Page 15 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 re- peat until all three batch sizes are set. 24. When finished setting all batch sizes, press done. The displa...
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Page 16 programming functions - level 2 (cont.) set new recipe using a recipe card to load coffee names and brew settings into the dual™ tf dbc™ with smart fun- nel ® : the g9-2t dbc's memory contains certain coffee names. If the operator uses a coffee name that is not already stored in the grinder'...
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Page 17 programming functions - level 2 (cont.) set new recipe: if not using a smart funnel ® (with a sensor coil) and/ or a g9-2t dbc grinder, the brewer will function as a standard bunn ® dual™ tf brewer: it is possible to operate the brewer without using a smart funnel ® and/or a g9-2t dbc grinde...
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Page 18 review recipes/modify recipes/set up no name coffee flavors: this function has three parts. It allows the opera- tor 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, ...
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Page 19 brew oz (setting or adjusting brew vol- umes) this function allows adjustment of the brew vol- umes 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 ® pa...
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Page 20 programming functions - level 2 (cont.) % bypass this function allows adjustment of the amount of water that bypasses the grounds. The number signi- fies the percentage of the brew volume which does not flow over the coffee grounds. Modifying recipes - bypass percentages: range: 0% to 90% fo...
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Page 21 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 dur- ing a brew cycle (start and stop the flow of water out of the sprayhead). This feature allows the ability to “fine-tune” the brewer fo...
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Page 22 set pulse brew (cont.) programming functions - level 2 (cont.) 35058 121102.
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Page 23 programming functions - level 2 (cont.) setting pulse brew - by example: 1. This display should read container ready? Place a container under the left side sprayhead. Place a brew funnel containing a filter and grounds on top of the container so that the spray and cof- fee bed can be viewed....
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Page 24 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 left brew side...
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Page 25 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...
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Page 26 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 m...
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Page 27 copy settings (no name coffee settings only) this function is used to transfer all the brew settings from a no name coffee flavor programmed on one side of the brewer to the other side. A no name coffee is a flavor that is not in the grinder's memory or is what appears if a smart funnel ® is...
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Page 28 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 mes- sage will be displayed when the brewer is not in use. Procedure to enable/disable ads: 1. Press and hold the ® pad until the d...
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Page 29 l byps oz/m: xx.X procedure to adjust the flow rate setting: 1. Press and hold the ® pad until the display reads set new recipes. Release the ®. Press and release the ® pad until the display reads l byps oz/m. The number represents what the brewer thinks is the flow rate of the bypass valve ...
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Page 30 left oz xx.X new l spry flow xx.X oz/m left or right l or r p2608 programming functions - level 2 (cont.) calibrate flow this function allows the operator to enter the actual flow rate of the sprayhead and the bypass for each side of the brewer by dispensing both separately for one minute. T...
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Page 31 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 to be calibrated. 2. Press and hold the ® pad until the display reads set new recipes. Release t...
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Page 32 brew counters this function allows the operator to track the number of brew cycles completed on the left side, the right side, and the total of both combined. There are three resettable counters, and one life counter that is not resettable. Procedures to view/reset the brew counters: 1. Pres...
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Page 33 service tools this function allows the testing of individual com- ponents and the ability to check switches for proper function. This function also tests the funnel sensor coil's frequency (diagnostic tool for troubleshooting purposes only). Pressing no will forward to the next function fact...
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Page 34 13. To test left funnel lock, press on. If the funnel lock is functional, the lock will come down to hold the funnel in place. 14. Press off to retract the funnel lock. 15. Press next to advance to the next component to be tested. 16. Follow steps 7 through 15 to test the right side componen...
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Page 35 service tools (cont.) programming functions - level 2 (cont.) 4. Press yes to run tests on various components and outputs within the brewer. (pressing no will exit this function and advance to the next function screen.) 5. The display should read test outputs. 6. In test outputs screen, pres...
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Page 36 factory defaults this function allows the operator to erase all of the previously entered recipes and ad messages. Factory- set default values will replace all previous settings. Procedure to set factory defaults: 1. Press and hold the ® pad until set new recipes appears. Release the ® pad. ...
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Page 37 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...
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Page 38 troubleshooting (cont.) screen displayed possible cause troubleshooting procedures 1. Water temperature in the tank does not meet the set ready tem- perature. 1. Brew funnel was not removed after the previous brew cycle was finished. 1. Brew funnel was moved out of position after the brew cy...
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Page 39 troubleshooting (cont.) troubleshooting procedures possible cause screen displayed 1. On/off switch was pressed after the brew cycle was started. 1. Tank heater failure 2. Triac failure 3. Control board/thermistor failure to resume brewing, press brew again. The brew cycle resumes form the p...
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Page 40 troubleshooting (cont.) troubleshooting procedures possible cause screen displayed 1. Water shut off to brewer 2. Inlet solenoid valve failure 3. Control board failure 1. Temperature sensor probe wire(s) broken or not making connection. 1. Temperature sensor probe wire(s) shorted to housing,...
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Page 41 equipment will not operate. Brew cycle will not start. Automatic refill will not operate or display shows fill time too long 1. No power or incorrect voltage. 1. No water 2. On/off switch 3. Brew switch 4. Brew valve 5. Electronic control board 1. No water 2. Water strainer measure the volta...
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Page 42 troubleshooting procedure troubleshooting (cont.) problem possible cause 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 numbe...
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Page 43 troubleshooting (cont.) problem possible cause troubleshooting procedures 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 numb...
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Page 44 troubleshooting (cont.) problem possible cause troubleshooting procedures remove power from the brewer. Connect a voltmeter across one of the tank heaters. Reapply power to the brewer and refer to testing indi- vidual components on page 33. If the full supply voltage is measured when the tan...
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Page 45 troubleshooting (cont.) problem possible cause troubleshooting procedures perform the previous procedure for testing triacs. If the voltage mea- sured is very low or zero, then sub- stitute a control board known to be in good working order. (a) direction of flow arrow must be pointing toward...
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Page 46 troubleshooting (cont.) problem possible cause troubleshooting procedures adjust the brew volume as required to achieve the recommended vol- ume for each brew cycle. Repair or replace leaky valve. Bunn ® paper filters should be used for proper extraction. Check sprayhead the brew cycle shoul...
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Page 47 troubleshooting (cont.) problem possible cause troubleshooting procedures consider adjusting bypass percent- age, preinfusion, or pulse brew. Contact bunn-o-matic for sugges- tions. The nut on back of the solenoid must be tight or it will vibrate during operation plumbing lines should not be...
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Page 48 34916.0000a 10/02 © 2002 bunn-o-matic corporation 120/240 or 120/208 volt a.C. Single phase schematic wiring diagram dual tf dbc brewwise n l2 right tank heater left tank heater switch unit assy r e d - 1 4 c5 c4 c6 whi refill r. Bypass sol sol sol whi whi whi whi l. Brew r. Brew l. Bypass r...
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Page 49 34916.0001b 03/03 © 2002 bunn-o-matic corporation 120/240 or 120/208 volt a.C. 4 wire 3-phase schematic wiring diagram dual tf dbc brewwise contactor whi whi whi whi whi whi k left limit thermostat right limit thermostat right tank heater left tank heater r e d - 1 4 b l u - 1 4 l2 l3 n cent...
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Page 50 34839.0000a 06/03 © 2003 bunn-o-matic corporation 200/230 volt a.C. 2 wire single phase schematic wiring diagram dual tf dbc brewwise right limit thermostat (1/2) left limit thermostat (1/2) right limit thermostat (1/2) left limit thermostat (1/2) red red red red red red l2 red blk blk-14 bl...
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Page 51 34839.0002b 11/04 © 2004 bunn-o-matic corporation 200,208 or 240 volt a.C. 2 wire single phase 50/60 hz schematic wiring diagram dual tf dbc brewwise limit thermostat limit thermostat whi whi whi whi whi n whi blk-14 blk-14 blk-14 blk-14 l2 l1 l4 l5 l6 l7 l 8 l3 blk l1 right mt1 blu-14 mt 1 ...