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  5. Installation & Operating Manual

Bunn DUAL SH DBC Installation & Operating Manual

Manual is about: WITH SMART FUNNEL S/N DUAL068000 & UP

Summary of DUAL SH DBC

  • Page 1

    Single ® sh dbc ® 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 we...

  • Page 2

    Page 2 introduction this brewer incorporates a wireless interface system that allows the dbc grinder to load certain informa- tion into the "programming chip" located inside the handle of the funnel. This information includes the name of the coffee ground and what batch size will be brewed (small, m...

  • Page 3

    Page 3 table of contents user notices ...............................................................................................................................4 electrical and plumbing requirements .......................................................................................5 operati...

  • Page 4: Main On/off

    Page 4 user notices the notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 34025 022509 00656.0000 00658.0000 20201.5600 37881.0000 this equipment must be installed to comply with the international plumbing code of the international code council and the fo...

  • Page 5

    Page 5 34025 022509 electrical hook-up (models without power cord) caution – improper electrical installation will damage electronic components. Damage caused by incorrect electrical connections is not covered by warranty. 1. An electrician must provide electrical service as specified in conformance...

  • Page 6

    Page 6 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 electric...

  • Page 7

    Page 7 34025 022509 operating controls 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 batc...

  • Page 8

    Page 8 34025 022509 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 bre...

  • Page 9

    Page 9 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 proce...

  • Page 10

    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 ...

  • Page 11

    Page 11 main screen this screen will be shown when the brewer is ready for use. The screen displays the water temperature 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 co...

  • Page 12

    Page 12 programming the brewer (cont.) program functions - level 2 there are three methods of programming the various brewing parameters of the single sh with smart funnel ® brewer. Method 1: using a smart funnel and a g92t dbc grinder: certain coffee names are stored in the g92t dbc's memory. When ...

  • Page 13

    Page 13 must grind into funnel first (coffee name) setup complete begin setup of (coffee name) quit setup? Yes insert funnel with new name review recipes? No yes (coffee name) no yes 3 batches done? No yes set new recipe? No yes 2 sec. Cycles through two screens funnel contains name funnel contains ...

  • Page 14

    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 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 ba...

  • Page 15

    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 repeat until all three batch sizes are set. 24. When finished setting all batch sizes, press done. The display ...

  • Page 16

    Page 16 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 m...

  • Page 17

    Page 17 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 st...

  • Page 18

    Page 18 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, pu...

  • Page 19

    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...

  • Page 20

    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...

  • Page 21

    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 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 ...

  • Page 22

    Page 22 exit to next function screen press done yes done yes screen displayed brew oz: xx.Xx 3 batches done? % bypass xx.X 3 batches done? Advances to all other coffee names programmed in the brewer's memory when the last coffee name in the brewer's memory is displayed, pressing next will exit and t...

  • Page 23

    Page 23 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...

  • Page 24

    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 front panel. T...

  • Page 25

    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...

  • Page 26

    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...

  • Page 27

    Page 27 enable ads? This function allows the operator to choose whether or not to display the advertising message that was en- tered 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 ho...

  • Page 28

    Page 28 bypass oz/m: xx.X (-) done (+) 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 bypass oz/m. The number represents what the brewer thinks is the flow rate of the ...

  • Page 29

    Page 29 new spray flow xx.X oz/m enter oz xx.X (-) done (+) calibrate flow? No yes sprayhead cal? No yes container rdy? Quit yes calibrate spray pressbrewstart calibrate spray 60 sec to finish counts down to zero after 1 minute brew pressed exit to the next function screen calibrate flow this functi...

  • Page 30

    Page 30 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 a...

  • Page 31

    Page 31 brew counters this function allows the operator to track the num- ber of brew cycles completed. There is one resettable counter, and one life counter that is not resettable. Exit to next function screen xxxx next reset xxxx next brew counters? No yes procedures to view/reset the brew counter...

  • Page 32

    Page 32 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 soft heat server's status on the brewer (in place or removed), and the funnel sensor coil's frequency (diagnostic tool for troubleshoo...

  • Page 33

    Page 33 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...

  • Page 34

    Page 34 service tools (cont.) programming functions - level 2 (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 switc...

  • Page 35

    Page 35 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. Exit exit replace will replace all brew settings are you sure? No yes factory defaults no yes procedure to set fa...

  • Page 36

    Page 36 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...

  • Page 37

    Page 37 troubleshooting (cont.) screen displayed possible cause troubleshooting procedure no funnel present 1. Smart funnel not fully inserted into the funnel rails. 2. Not using a smart funnel, and the funnel detect function is activated (on). 1. Water temperature in the tank does not meet the set ...

  • Page 38

    Page 38 troubleshooting (cont.) troubleshooting procedure possible cause screen displayed 1. Soft heat server was moved out of position after the brew cycle was started. 1. On/off switch was pressed after the brew cycle was started. 1. Tank heater failure 2. Triac failure 3. Control board/thermistor...

  • Page 39

    Page 39 troubleshooting (cont.) troubleshooting procedure 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, ...

  • Page 40

    Page 40 34025 022509 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/flow...

  • Page 41

    Page 41 34025 022509 troubleshooting procedure troubleshooting (cont.) problem possible cause automatic refill will not operate or display shows fill time too long (cont.) water flows into tank continuously with power removed from brewer. 3. Refill probe or sensitivity set- ting 4. Refill valve 5. O...

  • Page 42

    Page 42 34025 022509 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 ...

  • Page 43

    Page 43 34025 022509 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 individual components on page 33. If the full supply voltage is measured w...

  • Page 44

    Page 44 34025 022509 troubleshooting (cont.) problem possible cause troubleshooting procedures 3. Electronic control board 1. Strainer/flow control (.750 gpm) 2. Improper water pressure 3. Brew valve 4. Bypass valve 5. Lime buildup perform the above procedure for testing triacs. If the voltage mea- ...

  • Page 45

    Page 45 34025 012004 troubleshooting (cont.) problem possible cause troubleshooting procedures adjust the brew volume as required to achieve the recommended volume for each brew cycle. Repair or replace leaky valve. Bunn paper filters should be used for proper extraction. Check sprayhead the brew cy...

  • Page 46

    Page 46 34025 100501 troubleshooting (cont.) problem possible cause troubleshooting procedures weak beverage (cont.) brewer is making unusual noises. 6. Incorrect recipe 1. Solenoid (inlet) 2. Plumbing lines 3. Water supply 4. Tank heaters. Consider adjusting bypass percent- age, preinfusion, or pul...

  • Page 47: Schematic Wiring Diagram

    Page 47 limit thermostat triac tank heater sol sol sol sol brew bypass refill whi whi whi whi whi mt 1 blu -14 blk-14 blk-14 red n.C. Red overflow protection switch funnel lock (optional) + – ac ac rectifier 4 amp 24vdc + – whi blk blu/blk blk blu/blk red 120/208 or 120/240 volt a.C. + gnd single ph...

  • Page 48: Schematic Wiring Diagram

    Page 48 limit thermostat triac tank heater sol sol sol sol brew bypass refill whi whi-14 whi whi whi whi w h i l1 n mt 1 blu -14 blk-14 blk-14 red n.C. Red overflow protection switch funnel lock (optional) + – ac ac rectifier 4 amp 24vdc + – whi blk blu/blk blk blu/blk red 120 volt a.C. 2 - wire sin...

  • Page 49: Schematic Wiring Diagram

    Page 49 limit thermostat triac tank heater sol sol sol sol brew bypass refill whi whi mt 1 blu -14 blk-14 blk-14 red n.C. Red overflow protection switch funnel lock (optional) + – ac ac rectifier 4 amp 24vdc + – blk blu/blk blk blu/blk red 230 volt ac 2 wire single phase 50hz 32043.0001b 07/05 © 200...

  • Page 50: Schematic Wiring Diagram

    Page 50 limit thermostat triac tank heater sol sol sol sol brew bypass refill whi whi mt 1 blu -14 blk-14 blk-14 red n.C. Red overflow protection switch funnel lock (optional) + – ac ac rectifier 4 amp 24vdc + – blk blu/blk blk blu/blk red 200 volt ac 2 wire single phase 50/60hz 32043.0002b 07/05 © ...