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- DUAL SH DBC
- Operating Manual
Bunn DUAL SH DBC Operating Manual
Summary of DUAL SH DBC
Page 1
Dual ® sh dbc with smart funnel ® installation & operating manual bunn-o-matic corporation post office box 3227 springfield, illinois 62708-3227 phone: (217) 529-6601 fax: (217) 529-6644 www.Bunnomatic.Com 29877.0002a 12/04 ©2004 bunn-o-matic corporation (seattle's best).
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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 specifi ed below: 2 years parts and 1 year labor. 2) electronic circuit and/or control boards: parts and labor for 3 years. 3) compressors on r...
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Page 3 29877.2 121504 table of contents user notices ...............................................................................................................................4 electrical and plumbing requirements ....................................................................................
Page 4: Warning
Page 4 00656.0000 00831.0000 user notices the notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 10044.0000 03408.0005 03409.0005 00658.0000 warning ! Fill water tank before turning - on - thermostat or connecting appliance to power source. Use only on a p...
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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 specifi ed. 2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source. 3. Remove the front panel benea...
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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 prog-...
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Page 7 initial setup caution: the brewer must be disconnected from the power source throughout the initial setup, except when specifi ed 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. Connect the brewer ...
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Page 8 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 9
Page 9 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 fl avors of coffee. Programming of ...
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Page 10 ready to brew water temp: 200° 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 ...
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Page 11 programming the brewer (cont.) recipe program methods there are three methods of programming the vari- ous brewing parameters of the dual ® sh with smart funnel ® brewer. Method 1 using a smart funnel ® and a g9-2t dbc or mhg grinder: certain coffee names are stored in the g9-2t dbc or mhg's...
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Page 12 programming the brewer (cont.) program flow diagram level 1 press upper right hidden switch for approximately 2 seconds, until the following screen appears. Level 2 press upper right hidden switch for approximately 4 seconds, until “set new recipe” appears on screen. Left right no yes return...
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Page 13 programming functions (cont.) program flow diagram (cont.) transfer complete enable ads? No done yes set temp: 200°f (-) done (+) set ready 195°f (-) done (+) 0 refill 155 (-) done (+) l spry oz/m 39.2 (-) done (+) r spry oz/m 39.2 (-) done (+) continue to (f) (g) (e) press brew to set 1st o...
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Page 14 programming functions (cont.) program flow diagram (cont.) % bypass xx (-) done (+) 3 batches done? No yes set pulse brew set preinfusion full 1/2 1/4 left, set all 3 batches full 1/2 1/4 right, set all 3 batches 3 batches done? No yes drip time x.Xx (-) done (+) no-name left complete contin...
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Page 15 l byps oz/m 24.1 (-) done (+) r byps oz/m 24.1 (-) done (+) calibrate flow? No yes brew counters? No yes funnel detect no done yes service tools no yes factory defaults no yes (f) finished, returns to main screen left 0 next reset right 0 next l+r 0 next l+r 0 next test outputs? No yes test ...
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Page 16 programming functions - (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 p...
Page 17
Page 17 must grind into funnel first (coffee name) setup complete begin setup of (coffee name) quit setup? Yes use left side only 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 three screens 2 sec. Funnel co...
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Page 18 programming functions (cont.) set new recipes (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)...
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Page 19 15. If the three batch sizes are not correct, press and release no to return to the % bypass setup screen and repeat steps 12 through 15. If they are cor- rect, press yes. This will advance to set pulse brew. (refer to page 25 for description of set pulse brew function. 16. To set pulse brew...
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Page 20 programming functions (cont.) set new recipe using a recipe card to load coffee names and brew settings into the dual ® sh dbc with smart funnel ® : the g9-2t dbc or mhg's memory contains cer- tain coffee names. If the operator uses a coffee name that is not already stored in the grinder's m...
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Page 21 programming functions (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 ® dual ® brewer: it is possible to operate the brewer without using a smart funnel ® and/or a g9-2t dbc or mhg grinde...
Page 22
Page 22 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, pul...
Page 23
Page 23 brew oz (setting or adjusting brew vol- umes) this function allows adjustment of the brew vol- umes for each batch. The indicator signifi es 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 upper r...
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Page 24 programming functions -(cont.) % bypass this function allows adjustment of the amount of water that bypasses the grounds. The number signi- fi es the percentage of the brew volume which does not fl ow over the coffee grounds. Modifying recipes - bypass percentages: range: 0% to 90% for all t...
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Page 25 programming functions (cont.) set pulse brew this function allows the operator to program the brewer to "pulse” the sprayhead fl ow on and off during a brew cycle (start and stop the fl ow of water out of the sprayhead). This feature allows the ability to “fi ne-tune” the brewer for specifi ...
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Page 26 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...
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Page 27 p3364 programming functions - (cont.) set pulse brew - by example this function allows adjustment of the pulse brew by fi rst observing the fl ow of water for on and off times. Procedure to set pulse brew by example: note: the procedure to enter the pulse brew function (page 24) must be perf...
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Page 28 set pulse brew - enter times this function allows adjustment of the pulse brew by entering actual times for each of the settings. Procedure to enter actual times for pulse brew: note: the procedure to enter the pulse brew times (page 25) area of the program must be performed prior following ...
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Page 29 programming functions (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 t...
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Page 30 drip time (now displayed on "non" funnel lock units as well) this function allows the setting or modifi cation 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 ...
Page 31
Page 31 copy settings (no name coffee settings only) this function is used to transfer all the brew set- tings from a no name coffee fl avor programmed on one side of the brewer to the other side. A no name coffee is a fl avor that is not in the grinder's memory or is what appears if a smart funnel ...
Page 32
Page 32 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 33
Page 33 bypass oz/m: xx.X (-) done (+) p2306 procedure to set the sensitivity threshold of the refi ll circuit: note: make sure the water in the tank is touching the refi ll probe. 1. Press and hold upper right hidden switch until the display reads set new recipes. Release switch. Press and release ...
Page 34
Page 34 procedure to adjust the fl ow rate setting: 1. Press and hold upper right hidden switch until the display reads set new recipes. Release switch. Press and release upper right hidden switch until the display reads bypass oz/m. The number represents what the brewer thinks is the fl ow rate of ...
Page 35
Page 35 programming functions -(cont.) calibrate flow (cont.) procedures to calibrate the bypass fl ow 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 upper right hidden switch un...
Page 36
Page 36 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. Exit to next function screen resets left counter re...
Page 37
Page 37 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 38
Page 38 11. Press off to end fl ow of water. 12. Press next to advance to the next component to be tested. 13. To test left funnel lock, press on. If the fun- nel 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 adva...
Page 39
Page 39 service tools (cont.) programming functions - level 2 (cont.) 2. Place a soft heat server beneath each brew fun- nel. 3. Press and hold upper right hidden switch until the display reads set new recipes. Release switch. Continue pressing and releasing upper right hidden switch until service t...
Page 40
Page 40 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...
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Page 41 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 42
Page 42 troubleshooting (cont.) screen displayed possible cause troubleshooting procedures no funnel present temperature too low 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 d...
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Page 43 troubleshooting (cont.) troubleshooting procedures possible cause screen displayed to cancel press on/off to finish: press brew brew stopped! Server removed? 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 ...
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Page 44 troubleshooting (cont.) troubleshooting procedures possible cause screen displayed check water supply fill time too long 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 se...
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Page 45 equipment will not operate. Brew cycle will not start. Automatic refi ll will not operate or display shows fill time too 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/fl ow control (.750 g...
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Page 46 troubleshooting procedure troubleshooting (cont.) problem possible cause long automatic refi ll will not operate or display shows fill time too long (cont.) water fl ows into tank continuously with power removed from brewer. 3. Refi ll probe or sensitivity set- ting 4. Refi ll valve 5. Overf...
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Page 47 troubleshooting (cont.) possible cause troubleshooting procedures check the sensitivity setting. Refer to the refi ll function on page 33. If the left three digit number is less than the right number, the machine “thinks” it is full and the refi ll valve should be off. If the left number is ...
Page 48
Page 48 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 pages 37-39. If the full supply voltage is measured when the...
Page 49
Page 49 troubleshooting (cont.) problem possible cause troubleshooting procedures 3. Electronic control board 1. Strainer/fl ow control (.750 gpm) 2. Improper water pressure 3. Brew valve 4. Bypass valve 5. Lime buildup perform the previous procedure for testing triacs. If the voltage measured is ve...
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Page 50 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 fi lters should be used for proper extraction. Check sprayhead the brew cycle should...
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Page 51 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 reloading default values. See pages 17-30. Contact bunn-o- mati...
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