Bunn DUAL SH DBC WITH SMART FUNNEL Installation & Operating Manual Download Page 50

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 filters should be used 

for proper extraction.

Check sprayhead

The  brew  cycle  should  be  started 

only  with  an  empty  server  under 

the funnel.

Adjust the brew volume as required 

to achieve the recommended volume 

for each brew cycle.

BUNN paper filters should be used 

for proper extraction.

A  sufficient  quantity  of  fresh  drip 

or regular grind should be used for 

proper extraction.

B.O.M.  sprayhead  #01082.0002 

should be used to properly wet the 

bed 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 

the start switch and release it. Check 

the water temperature immediately 

below  the  sprayhead  with  a  ther-

mometer.  The  reading  should  not 

be less than 195˚F (91˚C).

1. Brew Volume adjustment

1. Brew Valve

1. Type of paper filters

2. No sprayhead

1. Beverage left in server from previ-

ous brew

2. Brew Volume adjustment

1. Type of paper filters

2. Coffee

3. Sprayhead

4. Funnel Loading

5. Water temperature

Consistently high or low beverage 

level in server.

Dripping from sprayhead.

Water overflows filter.

Beverage overflows server.

Weak beverage.

29877-3 062005

Summary of Contents for DUAL SH DBC WITH SMART FUNNEL

Page 1: ...lutely FREE and the quickest way to obtain the catalog Contact Bunn O Matic Corporation at 1 800 286 6070 to obtain a paper copy of the required Illustrated Parts Catalog mailed via U S Postal Service...

Page 2: ...he defective equipment is under warranty THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY WRITTEN OR ORAL EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY O...

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 2...

Page 4: ...This equipment must be installed to comply with the International Plumbing Code of the International Code Council and the Food Code Manual of the Food and Drug Adminis tration FDA For models installe...

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 Qualifi...

Page 6: ...rating pressure between 20 and 90 psi 138 and 620 kPa from a 1 2 or larger supply line A shut off valve should be installed in the line before the brewer Install a regulator in the line when pressure...

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...

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 o...

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 scree...

Page 10: ...s 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 program...

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 t...

Page 12: ...RCENTAGES 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...

Page 13: ...T 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...

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...

Page 15: ...CK 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 OF...

Page 16: ...hisinformationstoredelsewhere 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 P...

Page 17: ...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...

Page 18: ...he 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 0...

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...

Page 20: ...s 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...

Page 21: ...CTION 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...

Page 22: ...FFEE 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 TH...

Page 23: ...ANCES 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 PUL...

Page 24: ...IL 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...

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...

Page 26: ...F 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 R...

Page 27: ...ywillshow 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...

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 Whe...

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 p...

Page 30: ...ess 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 LEF...

Page 31: ...is 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 pre...

Page 32: ...nces 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 dis...

Page 33: ...etting 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 th...

Page 34: ...REW 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 displ...

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 swi...

Page 36: ...W 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 fun...

Page 37: ...er 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...

Page 38: ...ance 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 compone...

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 displ...

Page 40: ...cetoFACTORY 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 ThedisplayshouldnowreadF...

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 connect...

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...

Page 43: ...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 OFFtoter...

Page 44: ...roken 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 bla...

Page 45: ...er 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 3...

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...

Page 47: ...uching 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 conf...

Page 48: ...r 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...

Page 49: ...ndividual 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 c...

Page 50: ...f 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 benea...

Page 51: ...on 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...

Page 52: ...76 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 L...

Page 53: ...TABLE 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 J...

Page 54: ...SE 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 1...

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