Bunn Dual TF DBC User Manual

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DUAL

™

TF DBC

™

WITH SMART FUNNEL

S/N DUAL068000 & UP

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

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 refrigeration equipment: 5 years parts and 1 year labor.

4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis: parts and labor for 3 years or 30,000 pounds of coffee, whichever comes ﬁ rst.

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Ofﬁ ce Box 3227, Springﬁ eld, Illinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior authorization from BUNN that the 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 OF EITHER MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN

are not authorized to make modiﬁ cations to this warranty or to make additional warranties that are binding on BUNN. Accordingly, statements by such individuals, whether oral or written, do not constitute 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 speciﬁ ed above) to repair the defective components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for the equipment.

THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.

In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost proﬁ ts, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.

BUNN, DUAL, SH, BrewWise, SMART FUNNEL, Pulse Brew, DBC are either trademarks or registered trade-

marks of Bunn-O-Matic

Corporation.

INTRODUCTION

The brewer incorporates a wireless interface system that allows the DBC Grinder to load certain information into the "programming chip" located inside the handle of the funnel. This information includes what ﬂ avor of coffee is being ground and what batch size will be brewed (small, medium, or large). Once the correct ﬂ avor name and amount of coffee is ground, the funnel is loaded into the brewer. The information from the funnel handle is then transferred into the brewer. The brewer then takes this information and dispenses the amount of water preset in the brewer for that particular ﬂ avor of coffee and batch size. The brewer can also be programmed to adjust different functions of the brewing process, such as brew temperature, brew volumes, bypass percentages, pulse brew, etc. This allows the operator to program a certain "recipe" for each coffee ﬂ avor to be brewed.

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TABLE OF CONTENTS

User Notices ...............................................................................................................................4

Electrical .....................................................................................................................................5

Plumbing Requirements .............................................................................................................7

Operating Controls ......................................................................................................................8

Initial Setup .................................................................................................................................9

Coffee Brewing ............................................................................................................................9

Cleaning ....................................................................................................................................10

Glossary ....................................................................................................................................11

PROGRAMMING ......................................................................................................................12

Programming Switches .............................................................................................................12

Programming the Brewer ..........................................................................................................13

PROGRAM FUNCTIONS (LEVEL 1) Brew Lockout ...................................................................13

PROGRAM FUNCTIONS (LEVEL 2) ...........................................................................................14

PROGRAM FUNCTIONS (FLOW) .................................................................................................. 15

Set Units (Setting units of measure) ....................................................................................... 18

Set New Recipe (using a Smart Funnel and G92T DBC or MHG Grinder) ..............................19

Set Brew Volumes ............................................................................................................19

Set By-Pass Percentages .................................................................................................20

Set Pulse Brew and Drip Times ........................................................................................20

Set New Recipe (using a Recipe Card) ................................................................................21

Set New Recipe (no Smart Funnel nor G9-2T DBC Grinder) ................................................22

Review Recipes/Modify Recipes/Set up No Name Coffee ...................................................23

Set Brew Volumes ............................................................................................................24

Set Bypass Percentages ...................................................................................................25

Set Pulse Brew Times ......................................................................................................26

Easy Pulse .................................................................................................................28

Enter Times ...............................................................................................................29

Set Preinfusion Times ......................................................................................................30

Set Drip Times .................................................................................................................31

Assign Recipes ......................................................................................................................32

Copy Settings ........................................................................................................................32

Enable Ads ............................................................................................................................33

Set Temp (Brewing Temperature) ..........................................................................................33

Set Ready (Ready Temperature) ............................................................................................34

Reﬁ ll (Adjust Sensitivity) .......................................................................................................34

Spray Oz/M (Read sprayhead ﬂ ow rate) ................................................................................34

Bypass Oz/M (Read bypass ﬂ ow rate) ...................................................................................35

Calibrate Flow .......................................................................................................................35

Calibrate Sprayhead Flow .................................................................................................35

Calibrate Bypass Flow ......................................................................................................36

Brew Counters (View/Reset) ..................................................................................................37

Funnel Detect ........................................................................................................................38

Service Tools .........................................................................................................................38

Test Outputs (Components) .............................................................................................39

Test Switches ...................................................................................................................39

Test Frequency ................................................................................................................40

Factory Defaults (Reset) .......................................................................................................40

Troubleshooting ........................................................................................................................41

Schematic (Wiring Diagram) .....................................................................................................52

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Page 4

ELECTRICAL REQUIREMENTS (Models with power cord)

WARNING - The brewer must be disconnected from the power source until speciﬁ ed in Initial Set-Up.

Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements.

L2 RED

WHITE

NEUTRAL L1 BLACK

GREEN GREEN

L2 RED

WHITE

NEUTRAL L1 BLACK

120/208 and 120/240 volt ac

single phase, 60 Hz models

Note: This electrical service consists of 3 current carrying conductors (Neutral, L1 and L2) and a separate conductor for earth ground.

ELECTRICAL HOOK-UP

WARNING – If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service

personel with a special cord available from the manufacturer or its authorized service personel in order to

avoid a hazard. 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.

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 ed service personnel must select

and install the proper UL listed grounding type attachment plug speciﬁ ed on the rear of the brewer.

3. Install the speciﬁ ed plug on the attached power cord.

4. Remove the front panel beneath the sprayheads to gain access to the terminal block.

5. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding.

6. If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing has been hooked up, the brewer is ready for Initial Set-Up.

WARNING – Electrical connections must be made as speciﬁ ed above. Failure to follow these instructions can

result in personal injury, property or equipment damage.

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ELECTRICAL REQUIREMENTS (Models without power cord)

WARNING - The brewer must be disconnected from the power source until speciﬁ ed in Initial Set-Up. Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements.

7()4%

.%542!, ,",!#+

L1 BLACK

200 or

230V

L2 RED

GREEN

200 and 230 volt ac

single phase, 60 Hz models

Note: This electrical service consists of 2 current carrying conductors (L1 and L2) and a separate conductor for earth ground.

,2%$

,",5%

'2%%.

120/208 and 120/240 volt ac

three phase, 50 Hz models

Note: This electrical service consists of 4 current carrying conductors (Neutral, L1, L2 and L3) and a separate conductor for earth ground.

SYSTEM VOLTAGE V1 V2 208 208 120 240 240 120

L1, L2, L3, are the 3 phases V1 = Phase to phase voltage, between any 2 phases. V2 = Phase to neutral voltage, L1 to neutral must be 120V.

CAUTION: Do not connect L1 to a circuit operating at

more than 150 volts to ground.

ELECTRICAL HOOK-UP

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 speciﬁ ed.

2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.

3. Remove the front panel beneath the sprayheads to gain access to the terminal block.

4. Feed the cord through the strain relief and connect it to the terminal block.

5. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding. Replace the front panel.

6. If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing has been hooked up, the brewer is ready for Initial Set-Up.

WARNING – Electrical connections must be made as speciﬁ ed above. Failure to follow these instructions can

result in personal injury, property or equipment damage.

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PLUMBING REQUIREMENTS

This brewer must be connected to a cold water system with operating pressure between 20 and 90 psi (138

and 620 kPa) from a

⁄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 is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water inlet ﬁ tting is

NOTE – Bunn-O-Matic recommends

⁄8" ﬂ are or female quick connect.

⁄8" copper tubing for all installations from the 1⁄2" water supply line. A tight coil 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 ﬂ ow.

This equipment must be installed to comply with the Basic Plumbing Code of the

Building Ofﬁ cials and Code Administrators International, Inc. (BOCA)

and the Food Service Sanitation Manual of the Food and Drug Administration (FDA).

PLUMBING HOOK-UP

1. Flush the water line and securely attach it to the ﬂ are ﬁ tting located on bottom of brewer.

2. Turn on the water supply.

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OPERATING CONTROLS

(a) BATCH SELECTOR SWITCHES

Pressing the switch corresponding to the Small, Medium, or Large batch selects the amount of coffee to

be brewed. Pressing a different switch after a brew cycle has been initiated does not change the brew batch in progress. Light indicates the selected batch to brew.

(b) ON/OFF SWITCH

Pressing the ON/OFF switch alternately turns the brewing side on and off. Pressing this switch during the

brew cycle will interrupt the brew cycle, stopping the ﬂ ow of water. Pressing this switch during the programming of the brewer will exit the setup and return to the main screen.

Momentarily pressing and releasing this switch begins a brew cycle.

(d) ® SWITCH Pressing and holding the ® switch allows entry to the programming menus. Pressing and releasing the

switch steps through each function screen during programming.

(e) FUNCTION SCREEN

This is the display which shows the various functions of the brewer and allows the programming to be accomplished.

(f) FUNCTION SCREEN SWITCHES

These are the hidden switches which are used to program the brewer.

(g) FUNNEL SENSING COILS

These are used to "receive" information from the Smart Funnel handle (coffee name and batch size), and also

from RECIPE CARDS.

(h) SCROLL BACKWARDS

The upper left corner of the B in BUNN can be used to scroll backwards through the function list.

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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 to the power source. Water will begin ﬂ owing into the tank and stop when the tank is

ﬁ lled to its capacity. Display will show PLEASE WAIT...TANK FILLING until tank is ﬁ lled with water.

4. Wait approximately twenty minutes for the water in the tank to heat to the proper temperature. Display will

show READY TO BREW...WATER TEMP: XXX˚ when tank is at operating temperature.

5. Place a small vessel beneath the faucet and open the faucet handle. Release it when you hear the tank reﬁ ll-

ing.

6. Water volumes have been preset at the factory. Refer to adjustments for the Set Brew Volumes section of

this manual should the volume need to be increased or decreased.

7. The brewer is now ready for use in accordance with the coffee brewing instructions.

COFFEE BREWING

1. Insert a BUNN ﬁ lter into the Smart Funnel.

2. If a grinder is not used to obtain the coffee grounds, pour the proper amount of fresh coffee grounds into

the funnel and level by gently shaking. Slide the funnel into the funnel rails and select batch size. Proceed to step 5.

3. If a G9-2T DBC or MHG grinder is used with a compatible Smart Funnel, select the desired batch size on the

grinder. Grind the selected amount of fresh coffee into funnel and level grounds by gently shaking. It is not necessary to select a size on the brewer.

4. Slide the funnel into the funnel rails. The brewer will read the size ground through the chip in the funnel

handle and will automatically select the correct size to brew.

5. Place an empty server under the funnel. 6 The ON/OFF switch must be ON. Momentarily press and release the BREW switch. If the brewer has the fun-

nel 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 brew switch is pressed:

a) ON/OFF must be ON.

b) BREW TEMPERATURE TOO LOW - wait until heated or cancel BREW LOCKOUT option. c) FUNNEL NOT IN PLACE (or using a standard brew funnel) - cancel FUNNEL DETECT. d) CHECK FUNNEL - remove funnel, empty previously brewed grounds and grind a new batch into the fun-

nel.

7. If none of the above messages are displayed, the display will read NOW BREWING and the time remaining

in the brew cycle. Arrows will point to the side which is brewing. If both sides are brewing simultaneously, the arrows will alternate from left to right on the display.

8. Following the BREW will be a countdown of DRIPPING time which shows the time remaining until the funnel

lock will release. Discard the grounds and ﬁ lter only after visible dripping stops.

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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: Any buildup on the sprayhead and ﬁ tting may restrict water ﬂ ow, and impact your coffee brewing. For

consistently great coffee, clean sprayheads and ﬁ ttings weekly with sprayhead cleaning tool (#38227.0000). Upon visual inspection it may appear that light passes through all holes in the sprayhead plate, but a thin ﬁ lm of residue can pass light and still impede water ﬂ ow.

3. Insert the long end of sprayhead cleaning tool into the sprayhead ﬁ ttings, and rotate several times to remove any mineral deposits from the ﬁ tting.

4. Insert the short end of sprayhead cleaning tool into the bypass ﬁ ttings, and rotate several times to remove any mineral deposits from the ﬁ tting.

5. Remove sprayheads from brewer. Disassemble by removing the seal.

6. Use the pointed end of sprayhead cleaning tool to remove any mineral deposits from the sprayhead holes.

7. Reassemble sprayheads and reattach. Sprayheads only needs to be hand tightened.

See page 35 of instruction manual for calibration routine to verify sprayhead ﬂ ow rate matches programmed

ﬂ ow rate. Machine may need to be re-calibrated due to lime build up. If machine is cleaned and build up removed, machine must be re-calibrated to achieve desired volumes.

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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 process of diverting a portion of the brew water to the outside of the paper ﬁ lter so that it does

not pass through the coffee grounds. This process is sometimes used to optimize the ﬂ avor of the ﬁ nished brew.

CHIP: A computer chip containing either recipes for speciﬁ c coffee ﬂ avors or advertising messages which are

read by the sensing coils on the brewer. One chip is embedded in each Smart Funnel coffee ﬂ avor name and batch size ground from the grinder to the brewer.

DRIP TIME: The length of time from when the water spray over the grounds ends, to the time that no water drips

from the funnel tip.

FACTORY DEFAULTS: The factory preset brew settings that were installed into the brewer's memory. FIRST ON-TIME: During a pulse brew, this is the time set for the initial ﬂ ow of water over the grounds. FUNNEL DETECT: Sets the inability to initiate a brew cycle if the funnel is not properly inserted into the funnel

rails.

FUNNEL SENSING COIL: A sensor on the front hood of the brewer, which reads what name and batch size of

coffee was ground into the funnel and allows for the brewer to automatically set itself to what is read from the funnel handle.

LAST ON-TIME: During a pulse brew, this is the time 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-Name recipes for the left and right brewing positions.

OFF-TIME: During a pulse brew or preinfusion, this is the time set for the length of time that the water is not

spraying over the grounds.

PREINFUSION: The process of beginning a brewing cycle with an initial spray of water onto the grounds followed

by a pause in the spray. After the programmed pause, the spray continues without interruption until the end of the brewing cycle.

PULSE BREW: The process which allows the brew water to start, then stop, repeatedly, over the grounds in order

to derive the best ﬂ avor from the coffee. Pulse brew is also used in some instances to prevent a funnel overﬂ ow.

RECIPE: Set of brewing parameters stored in the brewer. The parameters are unique for each coffee name and

include brew ounces, pulse brew, percent bypass, preinfusion and drip time.

RECIPE CARD: An assembly consisting of a computer chip and an instruction label. Used for loading a recipe

into the brewer and the companion DBC Grinder.

handle to carry the

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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 the brewer is achieved by entering a certain function. Then, by the use of hidden programming switches, the operator can customize the brewing process to their speciﬁ cations.

PROGRAMMING SWITCHES

To access the programming mode, and to scroll through the different function screens, hidden programming switches are used. There are ﬁ ve of these switches that will be used for the setup of the brewer.

P2605

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 under the display)

This is used to select options that appear on the display during programming.

4. "Brewer" (center under the display)

This is used to select options that appear on the display during programming.

5. "Control" (lower right under the display)

This is used to select options that appear on the display during programming.

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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, and the procedures to program the various functions of the brewer.

IMPORTANT PROGRAMMING NOTES

- READ CAREFULLY -

To exit the programming mode at any time, press and release either of the ON/OFF switches located on the

front switch panel. The display will return to the MAIN SCREEN.

If none of the ﬁ ve programming switches are pressed within one minute during the setup of the brewer,

the programming of the function screen that is being set will be exited and the display will return to the MAIN

SCREEN. Always remember to place a container and funnel under the sprayhead when operating the brewer during the set-up of PULSE BREW, CALIBRATE FLOW and testing the brew and bypass valves in SERVICE TOOLS/TEST OUTPUTS.

MAIN SCREEN

READY TO BREW

WATER TEMP: 205°

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 control board) This switch can be set to prevent access to the

programming levels of the brewer. Once all the correct brew settings are programmed, the operator can set the switch to the "DISABLE" position to prohibit anyone from changing the settings.

PROGRAM

DISABLE

ENABLE

PROGRAMMING

SWITCH

P2424

PROGRAM FUNCTIONS - LEVEL 1

BREW LOCKOUT

This function allows the operator to prevent or allow brewing if the water temperature is less than

the set READY temperature.

To access this function screen press and hold the ® symbol. Release the ® when the display reads:

BREW LOCKOUT?

NO DONE YES

Press here

for NO

Press here

for DONE

The YES or NO should be ﬂ ashing. Select YES to

prevent brewing if the water temperature is below the

set READY temperature. Select NO to permit brewing

at any water temperature.

When ﬁ nished, press and release DONE. This will exit this function screen and return to the MAIN SCREEN on the display.

Press here

for YES

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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 or MHG Grinder:

Certain coffee NAMES are stored in the G9-2T DBC

or MHG's memory. When a particular name of coffee is ground into the Smart Funnel, that name and the batch size selected are transferred from the grinder to

the programming chip located in the funnel's handle.

The funnel is then inserted into the brewer's left side funnel rails. The sensor coil on the brewer reads the information contained in the handle. This then allows

the operator to set the BREW VOLUMES, BYPASS

PERCENTAGES, PULSE BREW TIMES, PREINFUSION TIMES and DRIP-OUT TIMES for that particular coffee NAME. Each coffee NAME can be set individually to

provide optimum brewing quality.

RECIPES

This diagram allows for the creating, modifying, or viewing of recipes in the brewer.

METHOD 2:

Using a RECIPE CARD to enter all of the brew settings at one time:

If using a coffee name not in the grinder's memory,

the customer can obtain a RECIPE CARD from the

factory with all the information needed to set up that

particular coffee name. This includes the COFFEE

NAME, BREW VOLUMES, BYPASS PERCENTAGES, 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:

This allows the operator to enter ONE set of brewing

parameters for each side, in the event a Smart Funnel and/or a G9-2T DBC or MHG is not used with the Dual

TF Brewer. This is referred to as a NO NAME coffee

ﬂ avor. If the brewer does not read the information in

the funnel's handle, it automatically selects the NO NAME brewing parameters set up prior to brewing. This includes BREW VOLUMES, BYPASS PERCENT-

AGES, PULSE BREW TIMES, PREINFUSION TIMES

and DRIP-OUT TIMES for the three batch sizes.

ARE YOU CREATING OR CHANGING A RECIPE FOR A

COFFEE NAME PREVIOUSLY USED IN THIS BREWER?

DON'T KNOW

YOU WILL MODIFY AN

TO VIEW A LIST OF EXISTING RECIPES,

AND FOLLOW THE INSTRUCTIONS

YES

HAVE YOU RECEIVED A RECIPE CARD

CONTAINING THE NEW RECIPE?

YES

FOLLOW INSTRUCTIONS

ON THE RECIPE CARD

EXISTING RECIPE

GO TO REVIEW RECIPES

AND FOLLOW INSTRUCTIONS

GO TO REVIEW RECIPES

YOU WILL ENTER

THE NO NAME LEFT

DOES THE GRINDER HAVE THE

NAME IN ITS MEMORY?

DON'T KNOW

AND NO NAME

RIGHT BREW

SETTINGS

YES

GO TO SET NEW RECIPE,

AND FOLLOW THE

INSTRUCTIONS

REFER TO NAME LIST IN GRINDER MANUAL

CONTACT BUNN-O-MATIC

FOR ASSISTANCE

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PROGRAM FLOW DIAGRAM

Press upper right hidden switch for approximately 2 seconds, until the following screen appears.

Press upper right hidden switch for approximately 4 seconds, until “UNITS” appears on screen.

LEVEL 1

BREW LOCKOUT?

NO DONE YES

Returns to normal

operating mode

LEVEL 2

LEFT<-<-<-<-<-<-RIGHT

NO YES

Returns

to (A)

Page 15

FULL

1/2

1/4

LEFT,

SET ALL 3

BATCHES

(C)

% BYPASS XX

(-) DONE (+)

3 BATCHES DONE?

NO YES

SET PULSE BREW

RIGHT,

SET ALL 3

BATCHES

FULL

1/2

1/4

DRIP TIME X.XX

(-) DONE (+)

3 BATCHES DONE?

NO YES

NO-NAME LEFT

SETUP COMPLETE

Continue to (B)

Page 16

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PROGRAMMING THE BREWER (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 preinfusion, pulse times, etc will also be erased. If using this option after information has been stored, it is important to have this information stored elsewhere 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.

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 ... ARE YOU SURE?.

3. Press YES to begin the change. While the change is in process, the display will read RESTORING DEFAULTS and a count down will begin.

4. When the count down reaches 0 the display will

read SET NEW RECIPE?. The units have been

reset.

5. Press and release either of the ON/OFF switches

located on the front switch panel to exit the UNITS function and return to the MAIN SCREEN.

SELECTS METRIC

AS THE

UNIT OF MEASURE

UNITS

METRIC DONE ENG

CHANGING UNITS

WILL!! ERASE!!

ALL PREVIOUSLY

STORED RECIPES

AND ALL SETUP

INFO WIL BE LOST!

SELECTS ENGLISH

AS THE

UNIT OF MEASURE

ARE YOU SURE?

YES NO

REPLACE EXIT

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Page 19

PROGRAMMING THE BREWER (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 ﬁ nished, press another batch size and repeat step 8 for that size. Continue setting all batch sizes.

10. When ﬁ nished setting all batch sizes, press and

release DONE. The display should read 3 BATCH

SIZES DONE?

11. If the three batch sizes are not correct, press and

release NO to return to the BREW OUNCES setup

screen and repeat steps 8 through 10. If the three

batch sizes are correct, press YES. This will advance to the % BYPASS function. (Refer to % BYPASS

for description).

% BYPASS XX.X

(-) DONE (+)

3 BATCHES DONE? NO YES

SET PULSE BREW? NO YES

with the setup instructions for SETTING PULSE

BREW - ENTER TIMES. SET DRIP TIME. (Refer

to SET DRIP TIME for description).

DRIP TIME X:XX

(-) DONE (+)

3 BATCHES DONE?

NO YES

(COFFEE NAME)

SETUP COMPLETE

P2418

18. The display should now read DRIP TIME, along with either the word OFF, or a time will be showing.

A batch light should also be blinking.

19. Using (-)

and (+), set the amount of time from

when the brew spray ends to when the funnel is emptied of hot liquid for that batch size.

NOTE: Set to OFF to prevent funnel locks from engaging

(to disable this function), for a particular batch size.

To set to OFF, continue to press and release (-) until OFF appears on the screen.

P2416

12. Using (-) and (+) set the amount of bypass water (percentage) to be dispensed around the grounds

for that particular batch size.

13. When ﬁ nished, press another batch size and repeat step 12 for each batch to be set.

14. When ﬁ nished setting each batch size, press DONE. The display should read 3 BATCHES DONE?

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 correct,

press YES. This will advance to SET PULSE BREW. (Refer to SET PULSE BREW for description).

16.To SET PULSE BREW, if setting pulse brew using EASY PULSE (brewing into a funnel) press YES

and proceed with 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 ENTER TIMES. Press and release YES and proceed

20. When ﬁ nished, press another batch size and repeat step 19 until all three sizes are set.

21. When ﬁ nished setting all batch sizes press DONE. The display should read 3 BATCHES DONE?.

22. If the three batch sizes are not correct, press NO to return to the DRIP TIME setup screen and repeat

steps 19 through 21.

23. If the three batch sizes are correct, press YES.

The screen should show the name of the coffee

being programmed (modiﬁ ed) along with SETUP COMPLETE.

24. After a 5 second delay, the display will advance to the next coffee name in the brewer's memory. If no other coffee names are present, the display will

read THAT WAS THE LAST RECIPE, and return to the REVIEW RECIPES screen.

Page 20

35058.1 071205

PROGRAMMING THE BREWER (cont.)

SET NEW RECIPE Using a RECIPE CARD to load coffee names and brew settings into the Dual TF DBC with Smart Funnel: The G9-2T DBC or MHG's memory contains certain

coffee names. If the operator uses a coffee name that is

not already stored in the grinder's memory, a RECIPE

CARD can be obtained from the factory. The RECIPE CARD would include all the information needed to set

up that particular coffee name. The information from the

RECIPE CARD is loaded into the grinder's memory, then

into the brewer's memory by holding the chip area up to the equipment's sensing coil. This information can

include the coffee name, BREW VOLUMES, BYPASS

PERCENTAGES, PULSE BREW TIMES and DRIP-OUT TIMES for that particular coffee NAME. These can all

be loaded in seconds. Contact Bunn-O-Matic Corporation for the avail-

ability of RECIPE CARDS.

6. If the brewing information is not correct, or it is

desired to exit the setup before the settings are

loaded into the brewer's memory, press QUIT. The display will read (COFFEE NAME) NOT SAVED. The display will then return to the MAIN SCREEN.

READY TO BREW

WATER TEMP: 200º

POSITION CARD UNDER THE

LEFT SIDE SENSOR COIL

CARD CONTAINS

RECIPE FOR

NOTE: Instructions to program the brewer and grinder are printed on the RECIPE CARD, along with the coffee

name that is being programmed.

Procedure to program the coffee name:

1. Remove the funnels (if present) from the left and 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. After a short pause the display will read CARD CON-

TAINS RECIPE FOR then will change to (COFFEE NAME) SHOW QUIT SAVE. All brewing parameters

for that coffee name are now transferred from the

CARD to the brewer.

4. To show (view) this information, press and release

SHOW. The display will scroll through all of the

brew settings for all three batch sizes. The display

will then return to CARD CONTAINS RECIPE FOR then will change to (COFFEE NAME) SHOW QUIT SAVE.

5. If all brew settings are correct, press SAVE. The display will read (COFFEE NAME) SETUP COM- PLETE. All brew settings for that name are now

stored in the brewer's memory.

(COFFEE NAME)

SHOW QUIT SAVE

SCROLLS THROUGH ALL OF THE BREW SETTINGS

FOR THE THREE BATCH

SIZES FOR THAT COFFEE

NAME

(COFFEE NAME)

NOT SAVED

(COFFEE NAME)

SETUP COMPLETE

P2300

Page 21

35058.1 071205

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 TF Brewer:

It is possible to operate the brewer without using a Smart Funnel and/or a G9-2T DBC or MHG Grinder. If a standard funnel, or if a non-DBC grinder is used

the brewer will automatically select a NO NAME coffee

ﬂ avor when the BREW switch is pressed. This means that no name was read from the funnel's handle.

There are two NO NAME coffee programs that can be set in the brewer. They are referred to as NO NAME LEFT and NO NAME RIGHT. The left and right

sides of the brewer can be set up independently of

each other. This includes BREW VOLUMES, BYPASS

PERCENTAGES, PULSE BREW TIMES and DRIP-OUT TIMES. The brewer will perform in the same capacity

as a standard Bunn Dual TF 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 MODIFY should be pressed in order to set the parameters for the NO NAME LEFT coffee. Otherwise, press NEXT to display NO NAME

RIGHT.

At this point, MODIFY should be pressed in order to set the parameters for the NO NAME RIGHT coffee.

P2419

NOTE: Before beginning setup, insert a funnel into the

left and right side funnel rails, and place a ThermoFresh Server beneath each brew funnel.

Page 22

35058 121102

PROGRAMMING THE BREWER (cont.)

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, PULSE

BREW TIMES, PRE-INFUSION TIMES and DRIP-OUT TIMES for a particular coffee name programmed into

the brewer.

Finally, this function is used to set up the two NO

NAME coffee BREW VOLUMES, BYPASS PERCENT- AGES, PULSE BREW TIMES and DRIP-OUT TIMES.

Procedure for reviewing recipes:

1. Press and hold the upper right hidden switch ®

until the display reads UNITS. Release the switch,

then press and release switch until the display

reads REVIEW RECIPES.

2. Press YES to proceed. The display should now read NO-NAME LEFT, along with MODIFY, SHOW and NEXT.

3. Press and release SHOW. The screen will scroll

through all the brew settings for that particular coffee ﬂ avor name. When ﬁ nished, the display will return to the coffee name just viewed.

4. To see settings again, press SHOW. To advance to the next coffee ﬂ avor name, press NEXT.

5. To exit, press NEXT until the display reads THAT

WAS THE LAST RECIPE.

6. After 5 seconds, the display will return to the

REVIEW RECIPES screen. Press and release NO

to advance to the next function screen, or press and release either ON/OFF switch located on the front switch panel to exit the programming mode

and return to the MAIN SCREEN.

EXIT TO

NEXT FUNCTION

SCREEN

REVIEW RECIPES? NO YES

NO-NAME LEFT

MODIFYSHOWNEXT

MODIFYSHOWNEXT

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

Page 23

THAT WAS THE

LAST RECIPE

35058.1 071205

PROGRAMMING THE BREWER (cont.)

BREW OZ (SETTING OR ADJUSTING BREW VOLUMES)

This function allows adjustment of the brew volumes 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 the upper right hidden switch ®

until the display reads UNITS. Release the switch,

then press and release switch until the display

reads REVIEW RECIPES.

2. Press YES to proceed. The display should now read NO-NAME LEFT, along with MODIFY, SHOW and NEXT.

3. Press and release NEXT to advance to the desired

coffee name to be modiﬁ ed.

4. Press and release MODIFY. The display should read BREW OZ: and a batch light will be blinking.

Press and release the batch size to be modiﬁ ed.

5. Using (-) and (+), set the amount of brew water, in ounces, to be dispensed over the grounds for

that particular batch size.

6. When ﬁ nished, press another batch size and repeat step 5 for that size for each batch size to be modiﬁ ed. Continue setting all batch sizes.

7. When ﬁ nished setting all batch sizes, press and

release DONE. The display should read 3 BATCH

SIZES DONE?

8. If the three batch sizes are not correct, press and

release NO to return to the BREW OUNCES setup

screen and repeat steps 5, 6 and 7.

9. If the three batch sizes are correct, press YES. This will advance to the % BYPASS function. Another

alternative is to press and release either ON/OFF

switch to exit the BREW OZ setup and return to the MAIN SCREEN.

Page 24

P2291

PROGRAMMING THE BREWER (cont.)

% BYPASS

This function allows adjustment of the amount of water that bypasses the grounds. The number signiﬁ 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 three batch sizes

NOTE: If the brewer is already in the % BYPASS screen,

it is not necessary to follow steps 1 through 6 in this section, but proceed directly to step 7.

1. Press and hold upper right hidden switch until

the display reads UNITS. Release the switch, then

press and release switch until the display reads

REVIEW RECIPES.

2. Press YES to proceed. The display should now read NO-NAME LEFT, along with MODIFY, SHOW and NEXT.

3. Press and release NEXT to advance to the desired

coffee name to be modiﬁ ed.

4. Press and release MODIFY. The display should read BREW OZ.

5. Press and release DONE. The display should read 3 BATCHES DONE?.

6. Press and release YES. The display should now read % BYPASS, and a batch light will be blinking.

Press and release the batch size to be modiﬁ ed.

7. Using (-) and (+) set the amount of bypass water (percentage) to be dispensed around the grounds

for that particular batch size.

8. When ﬁ nished, press another batch size and repeat step 7 for each batch to be modiﬁ ed.

9. When ﬁ nished setting all batch sizes, press DONE. The display should read 3 BATCHES DONE?

10. If they are not correct, press and release NO to return to the % BYPASS setup screen.

11. If the 3 batch sizes are correct, press YES. This will advance to SET PULSE BREW. Another alternative

is to press either ON/OFF switch located on the

front switch panel to exit the % BYPASS setup and return to the MAIN SCREEN.

Page 25

P2292

PROGRAMMING THE BREWER (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 c ﬂ avor proﬁ les. Pulse brewing can be set up for any and all batches.

INITIAL SPRAY

OFFTIME

ON-

TIME

OFFTIME

ON-

TIME

OFF-

TIME

ON-

TIME

ALTERNATES UNTIL

P2293

BREW CYCLE IS

COMPLETED

a) 1st ON TIME - This time is the duration from when

the BREW switch is pressed to when the desired water level in the funnel is reached. (Soaking the grounds)

b) OFF-TIME - This time is the duration from when

the water in the funnel reaches the desired ON TIME level to when it drains out of the funnel to a

desired lower level.

c) LAST ON-TIME- This time is the duration from when

the water in the funnel drains down to the lower level to when it ﬁ lls the funnel to a desired higher level. (Soaking the grounds).

These three times can be set two different ways.

The ﬁ rst is accomplished by utilizing the EASY PULSE

screen and following the subsequent steps under that function. The other allows the actual times to be entered for each of the settings. This is done by utilizing the

ENTER TIMES screen and following the subsequent

steps under that function. Either of these methods can be used to set the pulse brew for each batch.

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: If the brewer is already in the SET PULSE BREW

screen, it is not necessary to follow steps 1 through 8 in this section, but proceed directly to step 9.

1. Press and hold the upper right hidden switch (®)

until the display reads UNITS. Release the switch,

then press and release the switch until the display

reads REVIEW RECIPES.

2. Press YES to proceed. The display should now read NO-NAME LEFT, along with MODIFY, SHOW and NEXT.

3. Press and release NEXT to advance to the desired

coffee name to be modiﬁ ed.

4. Press and release MODIFY. The display should read BREW OZ.

5. Press and release DONE. The display should read 3 BATCHES DONE?.

6. Press and release YES. The display should now read % BYPASS.

7. Press and release DONE. The display should read 3 BATCHES DONE?.

8. Press and release YES. The display should now read SET PULSE BREW.

9. Press and release YES. The display should now read EASY PULSE SETUP.

10. If setting pulse brew using EASY PULSE (brewing into a funnel) press YES and proceed with the setup

instructions for SETTING PULSE BREW - EASY PULSE SETUP.

11. If setting pulse brew by ENTER TIMES (entering known times) press NO. The display should read ENTER TIMES. Press and release YES and proceed

with the he setup instructions for SETTING PULSE BREW - ENTER TIMES.

Page 26

35058.1 071205

PROGRAMMING THE BREWER (cont.)

SET PULSE BREW (cont.)

Page 27

PROGRAMMING THE BREWER (cont.)

SET PULSE BREW - EASY PULSE SETUP NOTE: The procedure to enter the PULSE BREW

function must be performed prior to following the steps listed below.

1. The display should read BREW TIME: X.XX and

a batch size indicator will be ﬂ ashing.

2. Using (-) and (+), set the desired brew time for the selected batch size.

3. When ﬁ nished, 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 ﬁ nished 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 return to BREW TIME setup screen

and repeat steps 2 thru 4. If they are correct, press

YES. This will display the 1st, OFF, and LAST times for 5 seconds, then advance to the DRIP TIME

setup. (See DRIP TIME SET UP)

SET PULSE BREW? NO YES

EASY PULSE SETUP

NO YES

ENTER TIMES ?

NO YES

See SET PULSE BREW-

ENTER TIMES

BREW TIME XX.X

(-) DONE (+)

3 BATCHES DONE? NO YES

1st OFF LAST XX.X XX.X XX.X

5 SEC. DELAY

DRIP TIME XX.X

(-) DONE (+)

3 BATCHES DONE? NO YES

Page 28

COFFEE NAME

SETUP COMPLETE

P3507

35058.1 071205

PROGRAMMING THE BREWER (cont.)

SET PULSE BREW - ENTER TIMES NOTE: The procedure to enter the PULSE BREW

function must be performed prior to following the steps listed below.

1. Press and release YES. The display should now read EASY PULSE SETUP.

2. Press and release NO. The display will read ENTER

TIMES?

3. Press YES to proceed. The display should now read 1st ON TIME X:XX.

4. Using (-) and (+) set the amount of time the ﬂ ow

of water into the funnel will be on.

5. When ﬁ nished, press DONE. The display will now read OFF TIMES: X:XX.

6. Using (-) and (+) set the amount of time the ﬂ ow

of water into the funnel will be off.

7. When ﬁ nished, press DONE. The display will now read LAST ON: X.XX

8. Using (-) and (+) set the amount of time the water

will be on to complete the brew.

9. When ﬁ nished, press DONE. The display will show

the three times just entered for that batch size. After

a 5 second delay, the display will read 3 BATCHES

DONE?

10. If other batch sizes need to be modiﬁ ed, 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 ﬁ nished press YES in 3 BATCHES DONE?. The display will then read DRIP TIME.

14. Press and release either of the ON/OFF switches located on the front switch panel to exit the SET

PULSE BREW function and return to the MAIN SCREEN.

NOTE: Pressing the upper right hidden button before

reaching the ﬁ nal setting screen exits the setup and retains the old values.

Page 29

PROGRAMMING THE BREWER (cont.)

SET PREINFUSION:

This function sets the brewer to turn the sprayhead ﬂ ow on for a preset time (1st ON TIME) followed by a preset spray pause (OFF TIMES) and then turn the spray on continuously until the brew volume is completed. This is a special case of pulse brew. It is not possible to set a batch size to have both pulse brew and preinfusion. One or the other (or neither) must be chosen. However, it is possible to set one batch size to pulse brew and the other two to preinfusion or vice versa.

NOTE: The procedure to enter the PULSE BREW

function must be performed prior to following the steps listed below.

1. Press and release YES. The display should now read EASY PULSE SETUP.

2. Press and release NO. The display will read ENTER

TIMES?

3. Press YES to proceed. The display should now read 1st ON TIME X:XX.

4. Using (-) and (+) set the amount of time the ﬂ ow

of water into the funnel will be on.

5. When ﬁ nished, press DONE. The display will now read OFF TIMES: X:XX.

6. Using (-) and (+) set the amount of time the ﬂ ow

of water into the funnel will be off.

7. When ﬁ nished, 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. When ﬁ nished, press DONE. The display will show

the two settings and PreI just entered for that batch size. After a 5 second delay, the display will read

3 BATCHES DONE?

10. If other batch sizes need to be modiﬁ ed, press

NO.

12. Press a different batch size pad and repeat steps 3 through 7. Repeat until all the desired batch sizes are set for the left side.

13. When ﬁ nished press YES in 3 BATCHES DONE?. The display will then read DRIP TIME.

14. Press and release either of the ON/OFF switches located on the front switch panel to exit the SET

PULSE BREW function and return to the MAIN SCREEN.

NOTE: Pressing the upper right hidden button before

reaching the ﬁ nal setting screen exits the setup and retains the old values.

SET PULSE BREW? NO YES

EASY PULSE SETUP

NO YES

NEXT FUNCTION

ENTER TIMES?

NO YES

1st ON TIME X:XX

(-) DONE (+)

OFF TIMES: X:XX

(-) DONE (+)

LAST ON: PreI

(-) DONE (+)

1st OFF LAST

XX.X XX.X PreI

5 SEC. DELAY

3 BATCHES DONE?

NO YES

NEXT FUNCTION

Page 30

EXIT TO

SCREEN

EXIT TO

SCREEN

P3265-1

35058.1 071205

PROGRAMMING THE BREWER (cont.)

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 modify drip times: Range: OFF to 10 minutes for all three batch sizes.

NOTE: If the brewer is already in the DRIP TIMES

screen, it is not necessary to follow steps 1 through 9 in this section, but proceed directly to step 10.

1. Press and hold the upper right hidden switch until

the display reads UNITS. Release the switch. Press and release switch until the display reads REVIEW RECIPES.

2. Press YES to proceed. The display should now

read NO-NAME LEFT, along with MODIFY, SHOW and NEXT.

3. Press and release NEXT to advance to the desired

coffee name to be modiﬁ ed.

4. Press and release MODIFY. The display should

read BREW OZ.

5. Press and release DONE. The display should read

3 BATCHES DONE?.

6. Press and release YES. The display should now

read % BYPASS.

7. Press and release DONE. The display should read

3 BATCHES DONE?.

8. Press and release YES. The display should now

read SET PULSE BREW.

9. Press and release NO. The display should now read

DRIP TIME, along with either the word OFF, or a

time will be showing. A batch light should also be blinking.

10. Using 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.

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

not used. For example, once the left side's 3 batch sizes are programmed (brew volumes, bypass percentages, pulse brew times, pre-infusion times, and drip-out

times) for a particular NO NAME coffee, all the data can

be transferred from the left side of the brewer to the right side in one step. The data can also be transferred from right to left, if the right side had been the initial set-up side. This results in less set-up time.

If two different NO NAME setups are required,

one on the left, the other on the right side, it is not recommended that this function be used.

Procedure to copy settings:

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 COPY SETTINGS.

Page 32

PROGRAMMING THE BREWER (cont.)

2. Press YES in this screen. The display should read LEFT ->->-> RIGHT.

3. If the initial programming was done on the left side

of the brewer, press YES. The display will read ARE

YOU SURE?

4. If you are sure that the data should be transferred

from left to right, press YES. The display will then read TRANSFER COMPLETE, and will automatically

advance to the next function screen.

5. In the LEFT ->->-> RIGHT screen, if the program-

ming was done on the right side and it is desired

to transfer from right to left, press NO. The display will then read LEFT <-<-<- RIGHT .

6. If the initial programming was done on the right

side of the brewer, press YES. The display will read

ARE YOU SURE?

7. If the data should be transferred from right to left,

press YES. After the data is transferred, the display will read TRANSFER COMPLETE. This will appear

for 3 seconds, then will exit to the next function screen. Brew settings for all ﬂ avors are not the

same on both sides of the brewer, only the NO NAME setting has been transferred.

4. When ﬁ nished, press and release DONE to save the new setting, exit the ENABLE ADS function and advance to the next function screen, SET TEMP.

Another alternative is to press and release either of the pads located on the front switch panel to

exit the ENABLE ADS function and return to the

MAIN SCREEN.

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

P2721

Procedure to Enable/Disable Ads:

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 ENABLE ADS. The YES or NO will be ﬂ ashing

to indicate the current selection.

2. Press and release the NO pad to disable this func-

tion (no ads will be displayed on the screen), or;

3. Press and release the YES pad to enable this func-

tion (ads will be displayed on screen).

Page 33

PROGRAMMING THE BREWER (cont.)

SET TEMP (cont.)

3. When ﬁ nished, press and release DONE to save the new setting, exit the SET TEMP function and advance to the next function screen, SET READY.

Another alternative is to press and release either ON/OFF switch located on the front switch panel

to exit the SET TEMP function and return to the

MAIN SCREEN.

SET READY - Range: 185˚F (85˚C) to 203˚F (95˚C)

This function allows the operator to set the minimum temperature allowable to start a brew cycle. The range can be from 185˚F (85˚C) to within 2˚F (-1.7°C)

of the SET TEMP. The water must be at the SET READY temperature or higher for the display to indicate READY TO BREW. If brew lockout is enabled, the brewing process will not start below this READY temperature.

NOTE: The upper limit for SET READY temperature

is 2˚F (-1.7°C) less than the water temperature (SET TEMP) setting.

SET READY: XXX°

(-) DONE (+)

REFILL - Range: 0 to 155

This function allows the operator to adjust the sensitivity of the reﬁ ll circuit. This is mainly a troubleshooting feature. Water in different geographical locations can have different conductivities. By adjusting the sensitivity of the reﬁ ll circuit, this will allow the brewer to operate under various water conditions.

XXX REFILL -> XXX

(-) DONE (+)

P2721

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 UNITS. Release switch. Continue to

press and release switch until the display reads

REFILL and shows a number on both sides of the

word.

2. To adjust the threshold setting, press (-) to decrease, or (+) to increase the setting.

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 ﬁ nished, press and release DONE to save the new setting, exit the SET READY function and advance to the next function screen, REFILL. An-

other alternative is to press and release either of the ON/OFF switches located on the front switch

panel to exit the SET READY function and return to the MAIN SCREEN.

NOTE: Always make sure that the number on the right

is larger than the number on the left when water is in contact with the reﬁ ll probe in the tank.

3. When ﬁ nished, press and release DONE. This saves

the new setting and advances to the next function

screen, L SPRY OZ/M. Another alternative is to

press and release either of the ON/OFF switches

located on the front switch panel to exit REFILL and return to the MAIN SCREEN.

SPRAY OZ/M

This function allows the operator to view or to enter the actual ﬂ ow rate coming out of the sprayhead. This

is NOT used to change the actual ﬂ ow rate, but to tell

the internal controller how fast the water is ﬂ owing. The unit of measure is ounces per minute (Oz/M).

Page 34

P2721

PROGRAMMING THE BREWER (cont.)

Procedure to adjust the ﬂ ow rate setting:

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

L SPRY OZ/M. The number represents what the

brewer thinks is the ﬂ ow rate of the sprayhead in ounces per minute.

2. If the actual ﬂ ow rate of the sprayhead is known,

but is different than the number on the display,

use the (-) and (+) to enter the correct ﬂ ow rate

in ounces per minute.

3. When ﬁ nished, press and release DONE. This saves

the new setting and advances to R SPRY OZ/M.

When ﬁ nished setting the right side, press and

release DONE to advance to next function screen, L BYPS OZ/M. Another alternative is to press and

release either ON/OFF switch located on the front

switch panel to exit R SPRY OZ/M function and return to the MAIN SCREEN.

BYPASS OZ/M

This function allows the operator to view or to enter the actual ﬂ ow rate coming out of the bypass nozzle.

This is NOT used to change the actual ﬂ ow rate, but to

tell the internal controller how fast the water is ﬂ owing. The unit of measure is ounces per minute.

L BYPS OZ/M: XXX

(-) DONE (+)

P2721

Procedure to adjust the ﬂ ow rate setting:

1. Press and hold upper right hidden switch until

display reads UNITS. Release switch. Continue to press and release switch until display reads L BYPASS OZ/M. The number represents what the

brewer thinks is the ﬂ ow rate of the bypass valve in ounces per minute.

2. If the actual ﬂ ow rate of the bypass valve is known,

but is different than the number on the display,

use the (-) and (+) to enter the correct ﬂ ow rate

in ounces per minute.

3. When ﬁ nished, press and release the DONE. This

saves the new setting and advances to R BYPS OZ/M. When ﬁ nished 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 function and return to the MAIN SCREEN.

CALIBRATE FLOW

This function allows the operator to enter the actual ﬂ ow rate of the sprayhead and the bypass for each side of the brewer by dispensing both separately for one minute. The volumes are then entered in ounces per minute (OZ/M).

Procedures to calibrate the sprayhead ﬂ ow rate:

1. Place a container, accurately graduated in ounces, and with a minimum capacity of 60 ounces, beneath the funnel on the side of the brewer to be calibrated.

2. Press and hold upper right hidden switch until the

display reads UNITS. Release switch. Continue

to press and release switch until display reads

CALIBRATE FLOW ?.

3. Press and release YES to advance to the SPRAY

HEAD CAL? function screen. (Pressing NO in the CALIBRATE FLOW screen will advance to the next

function screen, BREW COUNTERS).

4. Press and release YES. The display should read CONTAINER READY? If the container is under the funnel, press YES. The display should read

CALIBRATE SPRAY .. PRESS BREW TO START.

5. Press and release the BREW switch on the side to

be calibrated. The display should read CALIBRATE SPRAY .. 60 SEC TO FINISH. The 60 second timer

on the display will count down to zero. When the counter reaches zero, the display will change to

ENTER OZ, along with a number signifying ounces

per minute.

6. Measure the amount of water in the container

and using the (-) or (+), adjust the amount on the

display to match the amount in the container. Then

press DONE.

7. The display should now read NEW L or R SPRY FLOW, along with the correct ﬂ ow rate of the

sprayhead in ounces per minute. After about 5

seconds, the display will return to the CALIBRATE FLOW screen.

8. To exit the CALIBRATE FLOW program, press NO

to advance to the next function screen, or press

Page 35

35058.1 071205

PROGRAMMING THE BREWER (cont.)

CALIBRATE FLOW (cont.)

and release either ON/OFF switch located on the

front switch panel to exit the CALIBRATE FLOW function and return to the MAIN SCREEN.

9. Repeat steps 1 - 8 when calibrating the other side.

P2608

Page 36

PROGRAMMING THE BREWER (cont.)

CALIBRATE FLOW?

NO YES

EXIT TO THE

NEXT FUNCTION

SCREEN

SPRAYHEAD CAL?

NO YES

BYPASS CAL?

NO YES

CONTAINER RDY?

NO YES

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.

COUNTS DOWN

TO ZERO

Left or Right

L or R

CALIBRATE BYPASS

PRESS BREW START

BREW PRESSED

CALIBRATE BYPASS

60 SEC TO FINISH

AFTER 1 MINUTE

LEFT OZ XX.X

(-) DONE (+)

NEW L BYPS FLOW

XX.X OZ/M

P2609

Page 37

PROGRAMMING THE BREWER (cont.)

BREW COUNTERS (cont.)

5. When ﬁ nished, press NEXT to advance counter screens until the display reads BREW COUN- TERS. Press and release NO to advance to the

next function screen, or press and release either ON/OFF switch on the front switch panel to exit

the BREW 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.

FUNNEL DETECT ?

NO DONE YES

P2721

Procedure to set funnel detect:

1. Press and hold the upper right hidden switch until

display reads UNITS. Release the switch. Continue

to press and release switch until display reads

FUNNEL DETECT.

2. NO or YES should be ﬂ ashing to indicate the cur-

rent setting.

4. Select YES to prevent brewing if a Smart Funnel is

not correctly situated in the rails. If this function is activated and a brew cycle is attempted with the funnel not properly situated, the display will read,

FUNNEL NOT IN PLACE, until one is in place.

5. Select NO to allow brewing without a Smart Fun-

nel in place. This is selected when brewing with a funnel other than a Smart Funnel (a regular brew funnel).

6. When ﬁ nished, press and release DONE. This will

retain the changes, exit this function screen and advance to the next. Another alternative is to press either ON/OFF switch located on the front switch

panel to exit the FUNNEL DETECT and return to the MAIN SCREEN.

SERVICE TOOLS

This function allows the testing of individual components and the ability to check switches for proper function. This function also tests the Soft Heat

status on the brewer (in place or removed), and the funnel sensor coil's frequency (diagnostic tool for troubleshooting purposes only).

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: Left Brew Valve Left Bypass Valve Left Funnel Lock Left Server Right Brew Valve Right Bypass Valve Right Funnel Lock Right Server Reﬁ ll Valve Tank Heaters Heater Contactor

SERVICE TOOLS?

NO YES

EXIT TO

NEXT FUNCTION

SCREEN

TEST OUTPUTS?

NO YES

PRESS AND RELEASE

® SYMBOL

125.0 KHZ. 4

4 125.0 KHZ.

PRESS AND RELEASE

® SYMBOL

LEFT BREW VALVE

ON NEXT OFF

NEXT COMPONENT

TO BE TESTED

P2610

EXIT TO

NEXT FUNCTION

SCREEN

TEST SWITCHES?

NO YES

NOTHING PRESSED

TEST FREQUENCY?

NO YES

server's

Page 38

35058.1 071205

PROGRAMMING THE BREWER (cont.)

SERVICE TOOLS (cont.) Procedure to test components (outputs):

1. Place brew funnels into rails on both sides of

brewer.

2. Place a server beneath each brew funnel.

3. Press and hold the upper right hidden switch until

display reads UNITS. Release the switch. Continue to press and release switch until SERVICE TOOLS

appears.

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. Press and release YES. The display should read

LEFT BREW VALVE.

7. To test LEFT BREW VALVE, press ON. If the brew

valve is functional, water should run from the left brew side.

8. Press OFF to end ﬂ ow of water.

9. Press NEXT to advance to the next component to

be tested.

NOTE: To bypass testing any component, press NEXT

to advance to the next one, without testing the previous component.

10. To test LEFT BYPASS, press ON. If the bypass

valve is functional, water should run from the left brew bypass.

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 advance to the next component to

be tested.

16. Follow steps 7 through 15 to test the right side

components.

17. To test REFILL VALVE, press ON. If the reﬁ ll valve

is functional, the sound of the valve operating will be heard.

18. Press OFF to end testing of reﬁ ll valve.

19. Press NEXT to advance to the next component to

be tested.

20. To test TANK HEATERS, connect a voltmeter across

each of the tank heaters to check for voltage.

21. Press ON. The correct voltage should be present

at the heater terminals.

22. Press OFF to end testing of the tank heaters. NOTE: The tank heater will automatically turn off if

left on too long.

23. After testing the tank heater, press NEXT to advance

to the next test.

24. The HEATER CONTACTOR is used only on certain

models. Check the machine schematic to see if the contactor is present. Connect a voltmeter across a tank heater that is operated by the contactor and

press ON to check that correct voltage is present. Press OFF and conﬁ rm the voltage is zero.

25. Press NEXT to return to TEST OUTPUTS.

26. To exit SERVICE TOOLS, press and release either

ON/OFF switch located on the front switch panel.

This will return to the MAIN SCREEN.

Procedure to test switches: This function allows the operator to test the opera-

tion of the individual switches on the front panel.

1. Place brew funnels into rails on both sides of brewer.

2. Place a server beneath each brew funnel.

3. Press and hold the upper right hidden switch until

display reads UNITS. Release the switch. Continue to press and release switch until SERVICE TOOLS

appears.

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, 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 switches. The display will read

NOTHING PRESSED.

8. From this screen, press any of the switches on the front of the brewer except the upper right hidden switch. While the switch is pressed, the display shows the name of that switch. If the name does not appear, or if it remains after the switch has been released, the switch is defective. Each switch can be tested in this manner.

Page 39

35058.1 071205

PROGRAMMING THE BREWER (cont.)

SERVICE TOOLS (cont.)

9. After all switches have been tested, press and release the right hidden switch (®). This will return

to TEST SWITCHES?. Press and release switch again to advance to TEST SERVERS?. Another

alternative is to press and release either ON/OFF switch located on the front switch panel. This

will exit TEST SWITCHES and return to the MAIN

SCREEN.

Procedures to test coil frequency:

1. Place brew funnels into rails on both sides of brewer.

2. Place a Soft Heat server beneath each brew funnel.

3. Press and hold the upper right hidden switch

until the display reads UNITS. Release the switch.

Continue pressing and releasing the upper right

hidden switch until SERVICE TOOLS appears.

4. Pressing NO will exit this function and advance to the next function screen. Press YES to run tests

on various components and outputs within the brewer.

5. The display should read TEST OUTPUTS?.

6. In TEST OUTPUTS screen, press NO. Continue to press and release NO until the display reads TEST

FREQUENCY?.

7. Press and release YES. The display will show the

frequency of the sensor coil circuits. This is for diagnostic service use when troubleshooting this circuit.

8. After the coils have been tested, press and release either ON/OFF switch located on the front switch

panel. This will exit the TEST FREQUENCY function and return to the MAIN SCREEN.

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.

SEL BREWER TYPE?

NO YES

ThermoF SoftHeat

DONE

FACTORY DEFAULTS

NO YES

EXIT

WILL REPLACE ALL

BREW SETTINGS

ARE YOU SURE?

NO YES

EXIT

REPLACE

P2312

NOTE: If the operator wishes to test more than one

function in the SERVICE TOOLS section (outputs,

switches, servers, or coil frequency), it is not necessary to exit the program. Use the ﬂ ow chart

for SERVICE TOOLS to navigate to a particular

function.

Page 40

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 electrical equipment should be performed only by qualiﬁ ed

service personnel.

• All electronic components have 120 - 240 volt ac and low voltage dc potential on their terminals.

Shorting of terminals or the application of external voltages may result in board failure.

• Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be per-

manent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.

• Solenoid removal requires interrupting the water supply to the valve. Damage may result if sole-

noids are energized for more than ten minutes without a supply of water.

• The use of two wrenches is recommended whenever plumbing ﬁ ttings 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.

• Disconnect the brewer from the power source when servicing, except when electrical tests are speciﬁ ed.

• Follow recommended service procedures.

• Replace all protective shields or safety notices.

Screen Displayed

OVERFLOW CUP

FULL. EMPTY CUP

NO FUNNEL

PRESENT

Possible Cause

1. Overﬂ ow cup is full of water. This could be caused by boiling; see chart on page 33. Also could be Reﬁ ll Sensitivity adjustment; see page 34.

1. SMART FUNNEL

not fully inserted

into the funnel rails.

2. Not using a SMART FUNNEL, and the FUNNEL DETECT function

is activated (on).

Troubleshooting Procedures

Empty cup. Correct cause and retry.

Position the funnel so that the sensor is directly beneath the sensor coil on the brewer.

Disable the FUNNEL DETECT func-

tion.

Page 41

35058.1 071205

TROUBLESHOOTING (cont.)

Screen Displayed

TEMPERATURE

TOO LOW

CHECK FUNNEL

FOR FRESH COFFEE

PRESS BREW

TO BREW ANYWAY

Possible Cause Troubleshooting Procedures

1. Water temperature in the tank

does not meet the SET READY

TEMPERATURE.

1. Brew funnel was not removed after the previous brew cycle was ﬁ nished.

(a) Wait for the brewer to heat to the proper temperature.

(b) Disable the BREW LOCKOUT

function.

Remove funnel, check contents, and insert back into the funnel rails.

Press BREW to start a brew cycle

without removing the funnel.

BREW STOPPED!

FUNNEL REMOVED?

TO FINISH:

PRESS BREW

TO CANCEL

PRESS ON/OFF

1. Brew funnel was moved out of position after the brew cycle was started.

To resume brewing, correctly posi-

tion the funnel and press BREW

again. The brew cycle will resume from the point it was interrupted.

Press ON/OFF to terminate the

cycle.

Page 42

35058.1 071205

TROUBLESHOOTING (cont.)

Screen Displayed

BREW STOPPED!

IS SWITCH OFF?

TO FINISH:

PRESS BREW

TO CANCEL

PRESS ON/OFF

HEATING TIME

TOO LONG

1. ON/OFF switch was pressed after

the brew cycle was started.

1. Tank Heater failure

2. Triac Failure

Troubleshooting ProceduresPossible Cause

To resume brewing, press BREW

again. The brew cycle resumes form the point it was interrupted.

Press ON/OFF to terminate the brew

cycle.

Service Required

CHECK HEATING

CIRCUIT

3. Control Board/Thermistor failure

Service Required

Page 43

35058.1 071205

TROUBLESHOOTING (cont.)

Screen Displayed

FILL TIME TOO

LONG

CHECK WATER

SUPPLY

TEMP SENSOR

OUT OF RANGE

CHECK FOR BAD

CONNECTIONS

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.

Troubleshooting ProceduresPossible Cause

Check water supply shut-off

Service required

Check wire and connection of both black and white wires of temperature probe.

TEMP SENSOR

OUT OF RANGE

CHECK WIRE FOR

SHORTS

1. Temperature Sensor Probe wire(s) shorted to housing, or to each other.

Check to conﬁ rm that wire(s) are not pinched between two surfaces or connected to each other.

Page 44

35058.1 071205

TROUBLESHOOTING (cont.) Problem

Equipment will not operate.

Brew cycle will not start.

Automatic reﬁ ll will not operate or display shows FILL TIME TOO LONG

Possible Cause

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

Troubleshooting Procedure

Measure the voltage at the terminal block and conﬁ rm that it matches the voltage speciﬁ ed on the brewer data plate within +/- 10%.

Check plumbing and shut-off valves

Test the ON/OFF switch. Refer to the switch test procedures on page

33.

Test the BREW switch. Refer to the switch test procedures on page

33.

Test the Brew valve. Refer to Test- ing Individual Components on page

33.

Substitute a control board known to be in good working order.

Check plumbing and shut-off valves.

(A) Direction of ﬂ ow arrow must be pointing towards direction of water ﬂ ow.

(B) Remove the strainer and check for obstructions. Clear or replace

Page 45

35058.1 071205

TROUBLESHOOTING (cont.) Problem

Automatic reﬁ ll will not operate or display shows FILL TIME TOO LONG (cont.)

Possible Cause

3. Reﬁ ll Probe or Sensitivity Setting

Troubleshooting Procedure

Check the sensitivity setting. Refer to the Reﬁ ll function. 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 larger than the right, then the reﬁ ll valve will automatically be turned on to ﬁ ll the tank. The right number is the threshold setting and can be adjusted to compensate for extreme water conditions: very pure, 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 reﬁ ll probe to a low value when water IS touching the probe. For best operation, the right number should be set to a value midway between these low and high numbers. Before changing the setting, conﬁ rm that the reﬁ ll probe is free of scale buildup and the connection to it is secure.

Water ﬂ ows into tank continuously with power removed from brewer.

4. Reﬁ ll Valve

5. Overﬂ ow Protection Switch

6. Electronic Control Board

1. Reﬁ ll valve

Page 46

Test the Reﬁ ll valve. Refer to Testing

Individual Components.

When this condition occurs, the brewer will display OVERFLOW CUP FULL. EMPTY CUP. The reason for overﬁ lling could be a defective reﬁ ll valve, an incorrect sensitivity setting, (see above) or boiling.

Substitute a control board known to be in good working order.

Foreign material lodged in valve, holding it in open state.

35058.1 071205

TROUBLESHOOTING (cont.) Problem

Possible Cause

Troubleshooting Procedures

Water ﬂ ows into tank continuously with power applied to brewer.

1. Reﬁ ll Probe or Sensitivity Setting

Water will not heat or display shows HEATING TIME TOO LONG

2. Electronic Control Board

1. Limit Thermostat

CAUTION - Do not eliminate or

bypass limit thermostat. Use only replacement part #23717.0001.

2. Tank Heaters

Page 47

Substitute a control board known to be in good working order.

Remove power from the brewer. Press reset button on limit thermostat. Then check for continuity through it.

Remove power from the brewer. Check for continuity through the tank heaters.

35058.1 071205

TROUBLESHOOTING (cont.)

Problem

Possible Cause

Troubleshooting Procedures

Water will not heat or display shows HEATING TIME TOO LONG (cont.)

3. Triac

4. Electronic Control Board

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. 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 zero voltage is measured, there could be a defective triac or a defective control board.

Perform the above procedure for testing triacs. If the voltage measured is very low or zero, then substitute a control board known to be in good working order.

Spitting or unusual steaming from sprayhead or air vents. (Water too hot)

1. Triac

2. Lime Buildup

CAUTION - Tank and tank compo-

nents should be delimed regularly depending on local water conditions. Excessive mineral buildup on stainless steel surfaces can initiate corrosive reactions resulting in serious leaks.

Inspect the tank assembly for excessive lime deposits. Delime as required.

Page 48

35058.1 071205

TROUBLESHOOTING (cont.) Problem

Spitting or unusual steaming from sprayhead or air vents. (Water too hot) (cont.)

Inconsistent beverage level in server.

Possible Cause

3. Electronic control board

1. Strainer

2. Improper water pressure

3. Brew Valve

Troubleshooting Procedures

Perform the previous procedure for testing triacs. If the voltage measured is very low or zero, then substitute a control board known to be in good working order.

(A) Direction of ﬂ ow arrow must be pointing towards the brewer.

(B) Remove the strainer and check for obstructions. Clear or replace.

Check operating water pressure to the brewer. It must be between 20 and 90 psi (138 and 620 kPa).

Test the Brew Valve. Refer to Testing Individual Components. Turn the valve on for 30 seconds and collect the water dispensed from the sprayhead. Repeat the test several times to conﬁ rm a consistent volume of dispensed water. If not consistent, check the valve, tubing and sprayhead for lime buildup.

4. Bypass Valve

5. 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 seconds and collect the water collected from the bypass opening. Repeat the test several times to conﬁ rm a consistent volume of dispensed water. If not consistent, check the valve, tubing and bypass opening for lime buildup.

Inspect for lime buildup that could block the tank, tank ﬁ ttings, tubing, valves and sprayhead.

Page 49

35058.1 071205

TROUBLESHOOTING (cont.)

Problem Possible Cause

Consistently high or low beverage

1. Brew Volume adjustment

level in server.

Dripping from sprayhead.

Water overﬂ ows ﬁ lter.

1. Brew Valve

1. Type of paper ﬁ lters

2. No sprayhead

Beverage overﬂ ows server.

1. Beverage left in server from previous brew

2. Brew Volume adjustment

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 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.

Weak beverage.

1. Type of paper ﬁ lters

2. Coffee

3. Sprayhead

4. Funnel Loading

5. Water temperature

BUNN paper ﬁ lters should be used for proper extraction.

A sufﬁ cient quantity of fresh drip or regular grind should be used for proper extraction.

B.O.M. sprayhead should be used to properly wet the bed of ground coffee in the funnel.

The BUNN paper ﬁ lter 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 Brew switch and release it. Check the water temperature immediately below the sprayhead with a thermometer. The reading should not be less than 195˚F (91˚C).

Page 50

35058.1 071205

TROUBLESHOOTING (cont.) Problem

Weak beverage (cont.)

Brewer is making unusual noises.

Possible Cause Troubleshooting Procedures

6. Incorrect Recipe

Consider adjusting bypass percentage, preinfusion, or pulse brew. Contact Bunn-O-Matic for suggestions.

1. Solenoid (Inlet)

The nut on back of the solenoid must be tight or it will vibrate during operation

2. Plumbing lines

Plumbing lines should not be resting on the counter top.

3. Water Supply

(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 approximately 50 psi (345 kPa).

4. Tank Heaters.

Remove and clean lime off tank heaters.

Page 51

35058.1 071205

LIMIT THERMOSTAT

BLK-14

LIMIT THERMOSTAT

BLK-14 BLK-14

BLK-14

SHIELD

RIGHT

R E D

1 4

SCHEMATIC WIRING DIAGRAM

DUAL TF DBC BREWWISE

MT2

TRIAC

MT2

SWITCH UNIT ASSY

MT 1

TRIAC

BLU-14

MT 1

BLU-14

TANK HEATER

LEFT

TANK HEATER

C5C4C6

LEFT

FUNNEL SENSOR

WATER LEVEL

PROBE

TEMP PROBE

A1 Left Brew C3 Left Small Batch A2 Left On/Off C4 Right Large Batch A3 Right On/Off C5 Right Medium Batch A4 Right Brew C6 Right Small Batch B1 "Hidden" Left D1 "Digital" Left Hidden Button B2 "Hidden" Right D2 "Brewer" Center Hidden Button C1 Left Large Batch D3 "Control" Right Hidden Button C2 Left Medium Batch

VIO

WHI/VIO

RIGHT

YEL

WHI/YEL

WHI

PNK BLK

GRN

Switch Unit Assembly Codes

L1 Left Large Batch LED L2 Left Medium Batch LED L3 Left Small Batch LED L4 Left On/Off LED L5 Right On/Off LED L6 Right Large Batch LED L7 Right Medium Batch LED L8 Right S

LED's

mall Batch LED

J9-1J9-1

J9-5

J2-1

J2-5

J2-10

J4-1

J4-5

CONTROL PC BOARD

J4-10

J4-19

J4-15

J11-1

J11-5

J11-10

J11-18

120/240 OR 120/208

VOLT A.C.

SINGLE PHASE

VIO

WHI/ORA

WHI/GRN

ORA

GRY

TAN TAN YEL BLK

WHI BRN/WHI

BRN/BLK

BLU

BLU/BLK

REFILL

SOL

R. BYPASS

L. BYPASS

SOL

N.C.

OVERFLOW

PROTECTON SWITCH

L. FUNNEL LOCK

R. FUNNEL LOCK

REDRED

SOL

R. BREW

SOL

WHI

WHIL. BREW

Page 52

35058.1 071205

SCHEMATIC WIRING DIAGRAM

DUAL TF DBC BREWWISE

RIGHT LIMIT

THERMOSTAT

BLK-14 BLK-14 BLK-14

LEFT LIMIT

BLK-14

THERMOSTAT

BLK-14

N.O.

MT2

TRIAC

MT1 BLU-14

RIGHT

TANK HEATER

LEFT

TANK HEATER

BLU-14

RED-14

R E D

1 4

B L U

1 4

WATER LEVEL

PROBE

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 Left Medium Batch

LEFT

FUNNEL SENSOR

RIGHT

FUNNEL SENSOR

TEMP PROBE

WHI/VIO

WHI/YEL

Switch Unit Assembly Codes

L1 Left Large Batch LED L2 Left Medium Batch LED L3 Left Small Batch LED L4 Left On/Off LED L5 Right On/Off LED L6 Right Large Batch LED L7 Right Medium Batch LED L8 Right Small Batch LED

CENTER

TANK HEATER

L1L2 L3L4 L5 L6 L7 L8

SHIELD

J4-1

VIO

J9-1

YEL

J9-5

WHI

J2-1

PNK

BLK

J2-5

GRN

J2-10

C3 Left Small Batch C4 Right Large Batch C5 Right Medium Batch C6 Right Small Batch D1 "Digital" Left Hidden Button D2 "Brewer" Center Hidden Button D3 "Control" Right Hidden Button

LED's

J4-5

CONTROL PC BOARD

J4-10

CENTER LIMIT THERMOSTAT

BLU-14BLU-14RED-14

N.O.

SWITCH UNIT ASSY

C1 A1 A2 A3 A4B1 B2D1 D2 D3C2 C3 C4 C5 C6

J4-15

J11-1

J11-5

J11-10

J11-18

J4-20

RED/BLK

VIO

WHI/ORN

WHI/GRN

ORN GRY

T AN

YEL BLK

WHI BRN/WHI BRN/BLK

BLU

BLU/BLK

BLU-14

CONTACTOR

L. BYPASS

SOL

RED

N.C.

OVERFLOW

PROTECTION SWITCH

L. FUNNEL LOCK

R. FUNNEL LOCK

120/240 OR 120/208

VOLT A.C.

4 WIRE 3-PHASE

SOL

R. BREW

RED

SOL

REFILL

SOL

L. BREW

R. BYPASS

WHI

Page 53

35058.1 071205

SCHEMATIC WIRING DIAGRAM

DUAL TF DBC BREWWISE

BLK

RIGHT

LIMIT THERMOSTAT (1/2)

LEFT

LIMIT THERMOSTAT (1/2)

BLK-14 BLK-14

GRN/YEL

RED

BLK

BLK-14BLK-14

EMI

FILTER

RED

MT2

TRIAC

MT2

SWITCH UNIT ASSY

MT 1 BLU-14

TRIAC

BLU-14

MT1

LEFT

TANK HEATER

RIGHT

TANK HEATER

RIGHT LIMIT

THERMOSTAT (1/2)

LEFT LIMIT

THERMOSTAT (1/2)

1 4

WATER LEVEL

PROBE

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 Left Medium Batch

LEFT

FUNNEL SENSOR

TEMP PROBE

VIO

WHI/VIO

RIGHT

YEL

WHI/YEL

Switch Unit Assembly Codes

L1 Left Large Batch LED L2 Left Medium Batch LED L3 Left Small Batch LED L4 Left On/Off LED L5 Right On/Off LED L6 Right Large Batch LED L7 Right Medium Batch LED L8 Right Small Batch LED

SHIELD

J4-5J4-5

J4-1

J9-1

J9-5

WHI

J2-1

PNK

BLK

J2-5

GRN

J2-10

C3 Left Small Batch C4 Right Large Batch C5 Right Medium Batch C6 Right Small Batch D1 "Digital" Left Hidden Button D2 "Brewer" Center Hidde D3 "Control" Right Hidden Button

LED's

CONTROL PC BOARD

n Button

J4-10

J4-19

J4-15

J11-1

J11-5

J11-10

J11-18

200/230 VOLT A.C.

SINGLE PHASE

Page 54

2 WIRE

VIO

WHI/ORA

WHI/GRN

ORA

GRY

TAN TAN YEL BLK

WHI BRN/WHI

BRN/BLK

BLU

BLU/BLK

L. BYPASS

SOL

RED RED

N.C.

OVERFLOW

PROTECTION SWITCH

SOL

L. FUNNEL LOCK

SOL

R. FUNNEL LOCK

R. BREW

SOL

REFILL

SOL

L. BREW

35058.1 071205

R. BYPASS

RED

Page 55

DUAL TF DBC, CE 3 PHASE W/NEUTRAL

7IREASSHOWNFORPHASE&ORSINGLE PHASEOPERATIONMOVEREDWIREIN TERMINALBLOCKINTOCELLWITHBLACKWIRE APPLYPOWERACROSS,.

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Page 56

35058.1 071205

Bunn Dual TF DBC User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual