Bunn Single SH BrewWISE DBC Page 51 Installation And Operating Manual Download

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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 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 resting

on the counter top.

(A) The brewer must be connected

to a cold water line.

(B) Water pressure to the brewer

must not be higher than 90 psi (620

kPa). Install a regulator if necessary

to lower the working pressure to ap-

proximately 50 psi (345 kPa).

Remove and clean lime off tank

heaters.

29877-3 062005

Summary of Contents for Single SH BrewWISE DBC

Page 1: ... of the required Illustrated Parts Catalog mailed via U S Postal Service 29877 0003B 05 07 2005 Bunn O Matic Corporation www bunn com CAUTIO N DIS CA RD DE CA NT ER IF CR AC KE D SC RA TC HE D BO ILE D DR Y HE ATE D WH EN EM PTY US ED ON HIG H FLA ME OR EX PO SE D ELE CT RIC ELE ME NT S FA ILU RE TO CO MP LY RIS KS INJ UR Y PN 658 1985 BUN N O MA TIC COR POR ATIO N FU NN EL CO NT EN TS AR E HO T D...

Page 2: ...te warranties and should not be relied upon If BUNN determines in its sole discretion that the equipment does not conform to the warranty BUNN at its exclusive option while the equipment is under warranty shall either 1 provide at no charge replacement parts and or labor during the applicable parts and labor warranty periods specified above to repair the defective components provided that this rep...

Page 3: ...Set New Recipe no Smart Funnel nor G9 2T DBC or MHG Grinder 20 Review Recipes Modify Recipes Set up No Name Coffee 21 Set Brew Volumes 22 Set Bypass Percentages 23 Set Pulse Brew Times 24 Easy Pulse 25 Enter Times 27 Set Preinfusion 28 Set Drip Times 29 Assign Recipes 30 Copy Settings 30 Enable Ads 31 Set Temp Brewing Temperature 31 Set Ready Ready Temperature 32 Refill Adjust Sensitivity 32 Spray...

Page 4: ...ge 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 37881 0000 03408 0004 03409 0004 29877 3 051007 ...

Page 5: ...state and federal electrical codes 2 Using a voltmeter check the voltage and color coding of each conductor at the electrical source NOTE The brewer is shipped without a plug on the power cord Qualified service personnel must select and install the proper UL listed grounding type attachment plug specified on the rear of the brewer 3 Install the specified plug on the attached power cord 4 Remove th...

Page 6: ...il of copper tubing in the water line will facilitate moving the brewer to clean the counter top Bunn O Matic does not recommend the use of a saddle valve to install the brewer The size and shape of the hole made in the supply line by this type of device may restrict water flow This equipment must be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators...

Page 7: ...ing this switch during the programming of the brewer will exit the setup and return to the main screen d BREW SWITCH Momentarily pressing and releasing this switch begins a brew cycle e PROGRAM SWITCH Pressing and holding the upper right hidden switch allows entry to the programming menus Pressing and releasing the switch steps through each function screen during programming f FUNCTION SCREEN This...

Page 8: ...matically select the correct size to brew 5 Place an empty server under the funnel 6 The ENABLE BREW switch must be ON Momentarily press and release the BREW switch If the brewer has the funnel lock option and if it is activated once a brew cycle has been started the funnel is locked in place There may be certain situations in which the brew cycle will not begin when the brew switch is pressed a B...

Page 9: ... set for the second on time and each alternating on time for the remainder of the brew cycle MAIN SCREEN The term used to describe the screen that is displayed when the brewer is not in use This screen is also displayed after exiting the programming mode NO NAME COFFEE The term for the recipe used by the brewer when there is no coffee name stored in the funnel The brewer can contain separate No Na...

Page 10: ...ns hidden programming switches are used There are five of these switches that will be used for the setup of the brewer 1 2 3 4 5 1 symbol upper right of the BUNN logo This is used to access the programming mode and is also used to scroll forward through the function list 2 Upper left corner of the B in the BUNN logo This is used to scroll backwards through the function list 3 Digital lower left un...

Page 11: ... temperature When finished press and release DONE This will exit this function screen and return to the MAIN SCREEN on the display 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 an...

Page 12: ...ERCENTAGES PULSE BREW TIMES PREINFUSION TIMES and DRIP OUT TIMES METHOD 3 Not using a Smart Funnel and or a G9 2T DBC or MHG Grinder ThisallowstheoperatortoenterONEsetofbrewing parameters for each side in the event a Smart Funnel and or a G9 2T DBC or MHG is not used with the Dual SH Brewer This is referred to as a NO NAME coffee flavor If the brewer does not read the information in the funnel s h...

Page 13: ...XT B Continue to C THAT WAS THE LAST RECIPE COPY SETTINGS NO YES LEFT RIGHT NO YES Continue to D Cycles thru right side program constants Cycles thru left side program constants Continue to E FULL 1 2 1 4 LEFT SET ALL 3 BATCHES FULL 1 2 1 4 RIGHT SET ALL 3 BATCHES ARE YOU SURE NO YES 3 BATCHES DONE NO YES SET NEW RECIPE NO YES A INSERT FUNNEL WITH NEW NAME UNITS METRIC DONE ENG Sets unit of measur...

Page 14: ... A PROGRAM FLOW DIAGRAM Cont PROGRAMMING THE BREWER cont DONE 1st ON TIME X XX DONE OFF TIMES X XX DONE LAST ON Prel DONE 3 BATCHES DONE NO YES 1st OFF LAST X XX X XX PreI 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 XX X DONE R SPRY OZ M XX X DONE Continue to F E D 1st OFF LAST X XX X XX X XX FULL 1 2 1 4 RIGHT SET ALL 3 BATCHES F...

Page 15: ...OCK ON NEXT OFF LEFT SERVER ON NEXT OFF RIGHT BREW VALVE ON NEXT OFF RIGHT BYPASS ON NEXT OFF RIGHT FUNNEL LOCK ON NEXT OFF RIGHT SERVER ON NEXT OFF REFILL VALVE ON NEXT OFF HEATER CONTACTOR ON NEXT OFF SPRAY HEAD CAL NO YES BYPASS CAL NO YES CONTAINER RDY QUIT YES CONTAINER RDY QUIT YES CALIBRATE BYPASS PRESS BREW START CALIBRATE SPRAY PRESS BREW START SERVER DETECT NO DONE YES TEST FREQUENCY NO ...

Page 16: ...thisinformationstoredelsewhere so that the machine can be reprogrammed Procedure for modifying units of measure 1 Press and hold upper right hidden switch until the display reads UNITS Release switch Press and release METRIC or ENG to make a selection P3260 2 Press DONE to proceed The display should now read CHANGING UNITS WILL ERASE ALL PREVIOUSLY STORED RECIPES AND ALL SETUP INFO WILL BE LOST AR...

Page 17: ...e NAME can be set individually to provide optimum brewing quality PROGRAMMING THE BREWER cont 29877 3 062005 Procedure for Setting the Recipe NOTE Before beginning setup place a server beneath the left brew funnel 1 Insertthefunnelintothegrinderandselectabatch sizetogrind Itisnotnecessarytohavecoffeebeans in the hopper s in order to program the brewer The coffee name is pre selected and stored in ...

Page 18: ...the setup instructions for SET TING PULSE BREW EASY PULSE 17 If setting pulse brew by ENTER TIMES entering known times press NO The display should read ENTERTIMES PressandreleaseYESandproceed 29877 3 062005 COFFEE NAME SETUP COMPLETE DRIP TIME X XX DONE 3 BATCHES DONE NO YES P2418 with the setup instructions for SETTING PULSE BREW ENTER TIMES SET DRIP TIME Refer to SET DRIP TIME for description 18...

Page 19: ... right funnel rails 2 Position the RECIPE CARD vertically so that the top end of the chip is beneath the left side funnel sensing coil 3 AfterashortpausethedisplaywillreadCARDCON TAINS RECIPE FOR then will change to COFFEE NAME SHOWQUITSAVE Allbrewingparameters for that coffee name are now transferred from the CARD to the brewer 4 Toshow view thisinformation pressandrelease SHOW The display will s...

Page 20: ...es BREW VOLUMES BYPASS PERCENTAGES PULSEBREWTIMES andDRIP OUT TIMES The brewer will perform in the same capacity as a standard BunnDual Brewer The instructions for programming the NO NAME settings are on the following pages The same steps are followed for setting the recipe as those that are used to MODIFY A RECIPE beginning on page 21 Note that when the display reads NO NAME LEFT that is when MOD...

Page 21: ...NCTION SCREEN SCROLLS THROUGH ALL BREW SETTINGS FOR NO NAME LEFT COFFEE NAME SCROLLS THROUGH ALL BREW SETTINGS FOR ANY OTHER COFFEE NAMES STORED IN BREWER S MEMORY SCROLLS THROUGH ALL BREW SETTINGS FOR ALL COFFEE NAMES IN MEMORY WHEN IT REACHES LAST RECIPE IT WILL ADVANCE TO P2360 2 Press YES to proceed The display should now read NO NAME LEFT along with MODIFY SHOW and NEXT 3 Press and release SH...

Page 22: ...OFFEE NAMES PROGRAMMED IN THE BREWER S MEMORY WHEN THE LAST COFFEE NAME IN THE BREWER S MEMORY IS DISPLAYED PRESSING NEXT WILL EXIT AND THE DISPLAY WILL THEN READ SEE MODIFYING BYPASS PERCENTAGES ON THE FOLLOWING PAGE OR PRESS AND RELEASE EITHER ON OFF SWITCH TO EXIT THE BREW OZ SETUP AND RETURN TO THE MAIN SCREEN P2291 Press and release the batch size to be modified 5 Using and set the amount of ...

Page 23: ...VANCES 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 THE DISPLAY WILL THEN READ SEE MODIFYING PULSE BREW ON THE FOLLOWING PAGE OR PRESS AND RELEASE EITHER ON OFF SWITCH TO EXIT THE BYPASS SETUP AND RETURN TO THE MAIN SCREEN P2292 4 Press and release MODIFY The display should read BREW OZ 5 Press...

Page 24: ...TIL BREW CYCLE IS COMPLETED PRE INFUSION REMAINING ON ON TIME OFF TIME OFF TIME OFF TIME OFF TIME ON TIME ON TIME P2293 PROGRAMMING THE BREWER cont 29877 3 062005 Modifying pulse brew Range 1st on time off to 4 minutes Off time off to 4 minutes Last on time Preinfusion to 4 minutes NOTE IfthebrewerisalreadyintheSETPULSEBREW screen it is not necessary to follow steps 1 through 8 in this section but...

Page 25: ... LAST COFFEE NAME IN THE BREWER S MEMORY IS DISPLAYED PRESSING NEXT WILL EXIT AND THE DISPLAY WILL THEN READ See SET PULSE BREW EASY PULSE SETUP See SET PULSE BREW ENTER TIMES REVIEW RECIPES NO YES SET PULSE BREW NO YES EASY PULSE SETUP NO YES ENTER TIMES NO YES RECIPE NAME MODIFYSHOWNEXT THAT WAS THE LAST RECIPE NO NAME LEFT MODIFYSHOWNEXT SET PULSE BREW cont P2409 1 PROGRAMMING THE BREWER cont 2...

Page 26: ...FF LAST XX X XX X XX X EASY PULSE SETUP NO YES ENTER TIMES NO YES See SET PULSE BREW ENTER TIMES 3 When finished select another batch size to be set by pressing the switch next to the indicator light Repeat step 2 for each batch size to be set 4 When finished setting all batch sizes press done The display should read 3 BATCHES DONE 5 If the three batch sizes are not correct press and release NO to...

Page 27: ...aywillshow thethreetimesjustenteredforthatbatchsize After a 5 second delay the display will read 3 BATCHES DONE 10 If other batch sizes need to be modified press NO 12 Press a different batch size and repeat steps 3 through 7 Repeat until all the desired batch sizes are set for the left side 13 When finished press YES in 3 BATCHES DONE The display will then read DRIP TIME 14 Press and release eith...

Page 28: ... into the funnel will be off 7 When finished press DONE The display will now read LAST ON PreI 8 If the display shows a time use and to set it to read PreI PreI is an abreviation for preinfu sion 9 Whenfinished pressDONE Thedisplaywillshow thetwosettingsandPreIjustenteredforthatbatch size After a 5 second delay the display will read 3 BATCHES DONE 10 If other batch sizes need to be modified press ...

Page 29: ... the and set the amount of time from when the brew solenoid shuts off to when drip out occurs for that batch size NOTE Set to OFF to prevent funnel locks from engag ing to disable this function for a particular batch size To set to OFF press and release until OFF is displayed P2297 REVIEW RECIPES NO YES 3 BATCHES DONE NO YES DRIP TIME X XX DONE NO NAME LEFT MODIFYSHOWNEXT EXIT TO NEXT FUNCTION SCR...

Page 30: ...ress and hold the upper right hidden switch until thedisplayreadsUNITS Releasetheswitch Con tinue to press and release switch until the display reads COPY SETTINGS EXIT TO NEXT FUNCTION SCREEN COPY LEFT SIDE SETTINGS TO RIGHT SIDE COPY RIGHT SIDE SETTINGS TO LEFT SIDE EXIT TO NEXT FUNCTION SCREEN COPY SETTINGS NO YES LEFT RIGHT NO YES LEFT RIGHT NO YES ARE YOU SURE NO YES TRANSFER COMPLETE P2298 A...

Page 31: ...his message will be displayed when the brewer is not in use P2721 Procedure to Enable Disable Ads 1 Press and hold upper right hidden switch until the display reads UNITS Release switch Continue to press and release switch until the display reads ENABLE ADS The YES or NO will be flashing to indicate the current selection 2 Press and release the NO to disable this function no ads will be displayed ...

Page 32: ...unces per minute Oz M P2721 Procedure to set ready temperature 1 Press and hold upper right hidden switch until the display reads UNITS Release switch Continue to press and release switch until the display reads SET READY 2 To adjust the ready temperature press the button to decrease or to increase the ready temperature 3 When finished press and release DONE to save the new setting exit the SET RE...

Page 33: ...setting right side press and release DONE to advance to next function screen CALIBRATE FLOW Another alternative is to press and release either ON OFF switch located on the front switch panel to exit the BYPASS OZ M func tion and return to the MAIN SCREEN CALIBRATE FLOW Thisfunctionallowstheoperatortoentertheactual flow rate of the sprayhead and the bypass for each side of the brewer by dispensing ...

Page 34: ...BREW COUNTERS 4 Press and release NO to advance to the BYPASS CALIBRATION screen 5 Press and release YES The display should read CONTAINER READY If the container is under the funnel press YES The display should read CALI BRATE BYPASS PRESS BREW TO START 6 Press and release the BREW switch on the side to be calibrated The display should read CALIBRATE BYPASS 60SECTOFINISH The60secondtimer on the di...

Page 35: ... RESET BREW COUNTERS NO YES Procedures to view reset the brew counters 1 Press and hold the upper right hidden switch until the display reads UNITS Release the switch Con tinue to press and release switch until the display reads BREW COUNTERS 2 Pressing NO in this screen will advance to the next function Press YES to view the first brew counter left This number represents the brew cycles initiated...

Page 36: ...EW COUNTERS function and return to the MAIN SCREEN 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 P2721 Procedures to set server detect 1 Press and hold the upper right hidden switch until displayreadsUNITS Releasetheswitch Continue to press and release switch until display reads SERVER...

Page 37: ...wer EXIT TO NEXT FUNCTION SCREEN EXIT TO NEXT FUNCTION SCREEN PRESS AND RELEASE SYMBOL PRESS AND RELEASE SYMBOL PRESS AND RELEASE SYMBOL NEXT COMPONENT TO BE TESTED TEST OUTPUTS NO YES TEST SWITCHES NO YES LEFT BREW VALVE ON NEXT OFF SERVER REMOVED IN PLACE 125 0 KHZ 4 4 125 0 KHZ NOTHING PRESSED TEST FREQUENCY NO YES TEST SERVERS NO YES SERVICE TOOLS NO YES P2311 The components that can be indivi...

Page 38: ...vance 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 Procedure to test components outputs 1 Place brew funnels into rails on both sides of brewer 2 Place a Soft Heat server beneath each brew fun nel 3 Press and hold the upper right hidden switch until displayreadsUNITS Release...

Page 39: ... with arrows pointing to the left and right 8 Lift and pull both Soft Heat servers forward about 2 inches so that the two contacts on each server do not touch the two contacts on the brewer 9 The display should then read SERVER REMOVED with arrows pointing to the left and right 10 After the servers have been tested press and release either ON OFF switch located on the front switch panel This will ...

Page 40: ...ncetoFACTORY DEFAULTS Press and release YES The display should read ThermoF SoftHeat The selected brewer type will be flashing When correct brewer type is selected press DONE 3 ThedisplayshouldnowreadFACTORYDEFAULTS Pressing NO in this screen will revert to the MAIN SCREEN Press YES to replace the defaults This advances to WILL REPLACE ALL BREWING SET TINGS This screen will alternate with ARE YOU ...

Page 41: ... a supply of water The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened This will help avoid twists and kinks in the tubing Make certain that all plumbing connections are sealed and electrical connections tight and iso lated This brewer is heated at all times Keep away from combustibles WARNING Exercise extreme caution when servicing electrical equipment Disc...

Page 42: ... was started Positionthefunnelsothatthesensor isdirectlybeneaththesensorcoilon the brewer Disable the FUNNEL DETECT func tion a Wait for the brewer to heat to the proper temperature b Disable the BREW LOCKOUT function Removefunnel checkcontents and insert back into the funnel rails OR Press BREW to start a brew cycle without removing the funnel To resume brewing correctly posi tion the funnel and ...

Page 43: ...c Failure 3 Control Board Thermistor failure To resume brewing correctly position the Soft Heat Server and press BREW again The brew cycle resumes from the point it was inter rupted OR PressON OFFtoterminatethebrew cycle TO CANCEL PRESS ON OFF TO FINISH PRESS BREW BREW STOPPED IS SWITCH OFF To resume brewing press BREW again Thebrewcycleresumesform the point it was interrupted OR PressON OFFtoterm...

Page 44: ...broken or not making connection 1 Temperature Sensor Probe wire s shorted to housing or to each other Check water supply shut off Service required Service required Check wire and connection of both blackandwhitewiresoftemperature probe Check to confirm that wire s are not pinched between two surfaces or connected to each other CHECK FOR BAD CONNECTIONS TEMP SENSOR OUT OF RANGE CHECK WIRE FOR SHORT...

Page 45: ...wer data plate within 10 Check plumbing and shut off valves Test the ON OFF switch Refer to the switch test procedures on pages 36 38 Test the BREW switch Refer to the switch test procedures on pages 36 38 Test the Brew valve Refer to Testing Individual Components Substitute a control board known to be in good working order Check plumbing and shut off valves A Direction of flow arrow must be point...

Page 46: ... for extremewaterconditions verypure low conductance water requires a higher setting while high mineral content high conductance water requires a lower setting Note that the left number changes from a high value when water is NOT touching the refill probe to a low value when waterIStouchingtheprobe Forbest operation the right number should be set to a value midway between these low and high number...

Page 47: ...ouching the refill probe to a low value when waterIStouchingtheprobe Forbest operation the right number should be set to a value midway between these low and high numbers Before changingthesetting confirmthatthe refill probe is free of scale buildup and the connection to it is secure Substitute a control board known to be in good working order Remove power from the brewer Press reset button on lim...

Page 48: ...er Connect a voltmeter across one of the tank heaters Reapply power to the brewer and refer to Testing Individual Components 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 If half the supply voltage is measured the triac is defective If very low or zerovoltageismeasured therecould be a defective triac ...

Page 49: ...Individual Components Turn the valve on for 30 seconds and collect thewaterdispensedfromthespray head Repeat the test several times to confirm a consistent volume of dispensed water If not consistent check the valve tubing and spray head for lime buildup If bypass is being used on the inconsistent brewing recipe test the Bypass Valve Refer to Testing Individual Components Turn the valve on for 30 ...

Page 50: ...of ground coffee in the funnel The BUNN paper filter should be centered in the funnel and the bed of ground coffee leveled by gentle shaking Empty the server remove its cover and place the server beneath the sprayhead Place empty funnel over the server entrance with ON OFF switch in the ON position press thestartswitchandreleaseit Check the water temperature immediately below the sprayhead with a ...

Page 51: ...ion 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 Plumbinglinesshouldnotberesting on the counter top A The brewer must be connected to a cold water line B Water pressure to the brewer must not be higher than 90 psi 620 kPa Install a regulator if necessary to lower the working pressure to ap proximately 50 psi 3...

Page 52: ...876 0000D 01 07 2001 BUNN O MATIC CORPORATION 120 208 OR 120 240 VOLT A C GND SINGLE PHASE GRN N L1 BLK 14 RED 14 RED 14 RED 14 RED 14 RED 14 BLK 14 BLK 14 MODELS WITH MAIN ON OFF SWITCH ONLY WHI WHI L2 RED BLK SCHEMATIC WIRING DIAGRAM DUAL SH with SMART FUNNEL DBC 29877 3 051007 ...

Page 53: ...TTABLE FUSE 24VDC LEFT SERVER TRANSFORMER RIGHT SERVER TRANSFORMER RECTIFIER AC AC 4 AMP RECTIFIER 24VDC CONTROL PC BOARD RIGHT FUNNEL SENSOR LEFT FUNNEL SENSOR VIO WHI VIO WHI YEL YEL J9 1 J9 5 J2 1 J2 5 J2 10 J11 1 J11 10 J11 18 J11 5 J4 1 J4 10 J4 19 J4 5 J4 15 Touch Switch Assembly Codes A1 Left Brew A2 Left On Off A3 Right On Off A4 Right Brew B1 Hidden Left B2 Hidden Right C1 Left Large Batc...

Page 54: ...USE 24VDC LEFT SERVER TRANSFORMER RIGHT SERVER TRANSFORMER RECTIFIER AC AC 4 AMP RECTIFIER 24VDC CONTROL PC BOARD RIGHT FUNNEL SENSOR LEFT FUNNEL SENSOR VIO WHI VIO WHI YEL YEL J9 1 J9 5 J2 1 J2 5 J2 10 J11 1 J11 10 J11 18 J11 5 J4 1 J4 10 J4 19 J4 5 J4 15 Touch Switch Assembly Codes A1 Left Brew A2 Left On Off A3 Right On Off A4 Right Brew B1 Hidden Left B2 Hidden Right C1 Left Large Batch C2 Lef...

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