Bunn Dual TF DBC User Manual

BUNN

®

DUAL

™

TF DBC

™

WITH SMART FUNNEL

®

INSTALLATION & OPERATING MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: [phone] FAX: [phone]

35058.0000 04/03 ©2002 Bunn-O-Matic Corporation

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 specified 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 first.

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 [phone]
or by writing to Post Office Box 3227, Springfield, 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 modifications 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 specified 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 profits, 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.

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 flavor of coffee
is being ground and what batch size will be brewed (small, medium, or large). Once the correct flavor 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 flavor 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 flavor to be brewed.

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35058 121102

TABLE OF CONTENTS

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

Electrical and Plumbing Requirements ...................................................................................... 5

Operating Controls..................................................................................................................... 6

Initial Setup ............................................................................................................................... 7

Coffee Brewing .......................................................................................................................... 7

Cleaning..................................................................................................................................... 7

Glossary .................................................................................................................................... 8

PROGRAMMING ..........................................................................................9

Programming Switches ............................................................................................................. 9

Programming the Brewer ........................................................................................................ 10

PROGRAM FUNCTIONS (LEVEL 1) Brew Lockout ................................................. 10

PROGRAM FUNCTIONS (LEVEL 2) .......................................................................................... 11

Set New Recipe (using a Smart Funnel® and G9-2T DBC Grinder)........................... 12

Set Brew Volumes .......................................................................................................... 12

Set By-Pass Percentages ................................................................................................ 13

Set Pulse Brew Times ..................................................................................................... 13

Set Preinfusion Times..................................................................................................... 13

Set Drip Times ................................................................................................................ 14

Set New Recipe (using a Recipe Card)........................................................... 15

Set New Recipe (no Smart Funnel® nor G9-2T DBC Grinder) ................................. 16

Review Recipes/Modify Recipes/Set up No Name Coffee ..................................... 17

Set Brew Volumes .......................................................................................................... 18

Set Bypass Percentages ................................................................................................. 19

Set Pulse Brew Times ..................................................................................................... 20

By Example .............................................................................................................. 22

Enter Times ............................................................................................................. 23

Set Preinfusion Times..................................................................................................... 24

Set Drip Times ................................................................................................................ 25

Copy Settings......................................................................................... 26

Enable Ads ............................................................................................ 27

Set Temp (Brewing Temperature) ........................................................................................ 27

Set Ready (Ready Temperature) .......................................................................................... 27

Refill (Adjust Sensitivity) ..................................................................................................... 28

Spray Oz/M (Read sprayhead flow rate) ............................................................................... 28

Bypass Oz/M (Read bypass flow rate) .................................................................................. 28

Calibrate Flow........................................................................................ 29

Calibrate Sprayhead Flow ............................................................................................... 29

Calibrate Bypass Flow ..................................................................................................... 30

Brew Counters (View/Reset) ................................................................................................ 31

Funnel Detect......................................................................................... 31

Service Tools ......................................................................................... 32

Test Outputs (Components) ........................................................................................... 33

Test Switches ................................................................................................................. 33

Test Frequency ............................................................................................................... 34

Factory Defaults (Reset) ...................................................................................................... 35

Troubleshooting ...................................................................................................................... 36

Schematic (Wiring Diagram) ................................................................................................... 47

Page 3

35058 121102

USER NOTICES

The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels.

00658.0000

00831.0000

00656.0000

Page 4

20201.5600

ELECTRICAL REQUIREMENTS

CAUTION - The brewer must be disconnected from the power source until specified in

Initial Set-Up.

L2 RED

WHITE

NEUTRAL

L1 BLACK

120 V.A.C.

120 V.A.C.

P1841

Requires 3-wire, grounded
service rated 120/208 or 120/
240 volts ac, 30 amp, single
phase, 60 Hz.

208 OR 240 V A.C.

Requires 4-wire, grounded
service rated 120/208 volts ac
or 120/240 volts ac, 30 amp,
three phase, 50 Hz.

CAUTION: Do not connect L1 to a circuit operating at more

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.

P2612

SYSTEM
VOLTAGE V1 V2

208 208 120
240 240 120

than 150 volts to ground.

ELECTRICAL HOOK-UP

CAUTION – Improper electrical installation will damage electronic components.

1. An electrician must provide electrical service as specified.

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

3. Remove the front, lower left access panel beneath the sprayheads.

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 access 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

.

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 1⁄2" or larger supply line. A shut-off valve should be installed in the line before the brewer. Install
a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water
inlet fitting is 1⁄4" flare or female quick connect.

NOTE – Bunn-O-Matic recommends

1

⁄4" copper tubing for installations of less than 25 feet and 3⁄8" for more than
25 feet 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 flow.

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

Building Officials 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 flare fitting located on bottom of brewer.

2. Turn on the water supply.

Page 5

35058 041003

OPERATING CONTROLS

e

h

d

a

g

c

b

f

b

g

c

a

OPERATING CONTROLS

(a) BATCH SELECTOR PADS

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

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

(b) ON/OFF PAD

Pressing the ON/OFF pad alternately turns the brewing side on and off. Pressing this pad during the brew cycle

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

(c) BREW PAD

Momentarily pressing and releasing this pad begins a brew cycle.

(d) ® PAD

Pressing and holding the ® pad allows entry to the programming menus. Pressing and releasing the pad 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 PADS

These are the hidden pads 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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35058 121102

INITIAL SETUP

CAUTION – The brewer must be disconnected from the power source throughout the initial setup, except when

specified in the instructions.

1. Insert an empty funnel into the funnel rails of one of the brew stations.

2. Place an empty server under the funnel.

3. Connect the brewer to the power source. Water will begin flowing into the tank and stop when the tank is filled

to its capacity. Display will show PLEASE WAIT...TANK FILLING until tank is filled 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 refilling.

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. Select the desired batch size on the grinder. It is not necessary to select a size on the brewer.

2. Insert a BUNN® filter into the funnel.

3. Grind the selected amount of fresh coffee into the Smart Funnel® using the G9-2T DBC with Smart Funnel

operation and level the grounds by gently shaking.

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. If the grounds are not obtained through a grinder
compatible with a Smart Funnel®, a batch size must be chosen on the brewer.

5. Place an empty server under the funnel.

®

6 The must be ON. Momentarily press and release the pad. If the brewer has the funnel lock option

and if it is activated, once a brew cycle has been started the funnel is locked in place. There may be certain

situations in which the brew cycle will not begin when is pressed:

a) ON/OFF must be ON.

b) BREW TEMPERATURE TOO LOW - wait until heated or cancel BREW LOCKOUT option. (Page 10)
c) FUNNEL NOT IN PLACE (or using a standard brew funnel) - cancel FUNNEL DETECT. (Page 31)
d) CHECK FUNNEL - remove funnel, empty previously brewed grounds and grind a new batch into the funnel.

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 drip time DRIPPING which shows the time remaining until the

funnel lock will release. Discard the grounds and filter only after visible dripping stops.

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.

2. Check and clean the sprayhead. The sprayhead holes must always remain open.

NOTE – In hard water areas, this may need to be done daily. It will help prevent liming problems in the brewer and

takes less than a minute.

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35058 121102

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 filter so that it does not

pass through the coffee grounds. This process is sometimes used to optimize the flavor of the finished
brew.

CHIP: A computer chip containing either recipes for specific coffee flavors or advertising messages which are

read by the sensing coils on the brewer. One chip is embedded in each Smart Funnel® handle to carry the
coffee flavor 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 flow 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 flavor from the coffee. Pulse brew is also used in some instances to prevent a funnel
overflow.

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.

Page 8

35058 121102

PROGRAMMING

Using the menu-driven display on the front of the brewer, the operator has the ability to alter or modify
various brewing parameters such as brew temperatures, brew volumes, bypass percentages, etc. This allows for
the precise brewing of various flavors of coffee.

Programming of 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 specifications.

PROGRAMMING SWITCHES

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

2

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.

1

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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35058 121102

MAIN SCREEN

Page 10

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 Grinder:

Certain coffee NAMES are stored in the G9-2T

DBC'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 G9-2T DBC's

memory, the customer can obtain a RECIPE CARD

from the factory with all the information needed to set
up that particular coffee flavor. 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
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 is not used with the

Dual™ TF Brewer. This is referred to as a NO NAME

coffee flavor. 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 the BREW VOLUMES, BYPASS PER-

CENTAGES, PULSE BREW TIMES, PREINFUSION
TIMES and DRIP-OUT TIMES for the three batch sizes.

Page 11

P2369

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SET NEW RECIPE
Using a Smart Funnel® and a G9-2T DBC Grinder:

This function allows the operator to set BREW

VOLUMES, BYPASS PERCENTAGES, PULSE BREW
TIMES, PREINFUSION TIMES and DRIP-OUT TIMES

for each coffee name preset in the grinder's memory.

Certain coffee NAMES are stored in the G9-2T

DBC'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 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. The name of the
coffee flavor will then appear on the display. 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. It also allows the operator to
set other brewing parameters, such as BREW TEM-

PERATURE, READY TEMPERATURE, BREW LOCK­OUTS, etc. Each coffee NAME can be set individually

to provide optimum brewing quality.

Procedure for Setting the Recipe:
NOTE: Before beginning setup, place a server beneath

the left brew funnel.

1. Insert the funnel into the grinder and select a batch
size to grind. It is not necessary to have coffee
beans in the hopper(s) in order to program the
brewer. The coffee name is pre-selected and stored
in the grinder's memory for the side being ground.

2. Press the

pad. When the grinder stops grind-

ing, remove the funnel.

3. On the brewer, press and hold the ® pad until the

display reads SET NEW RECIPE. Release the ®

pad.

4. Press and release YES. The display should read

INSERT FUNNEL WITH NEW NAME, then USE
LEFT SIDE ONLY, and finally, QUIT SETUP? These

three displays will repeatedly cycle.

5. Insert the funnel into the rails on the left side of

the brewer. The display should read the NAME of

the coffee that was ground into the funnel, along

with a NO and YES. If the NAME on the display is
correct, press YES.

6. If, for some reason, the name of the coffee from
the grinder did not load properly into the funnel, or
if a grind has not yet been done, the display will

read MUST GRIND INTO FUNNEL FIRST. It will be

necessary to grind another batch following steps
1 and 2.

7. If the grind is acknowledged by the brewer, the

display will read BEGIN SETUP OF (COFFEE NAME).
Then the screen will display BREW OZ. and a batch

light will be blinking. (Refer to page 18 for descrip-

tion of BREW OZ. function).

P2299

Page 12

PROGRAMMING FUNCTIONS - LEVEL 2 (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 finished, press another batch size and re­peat step #8 for that size. Continue setting all batch
sizes.

10. When finished 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 page
19 for description of % BYPASS function.)

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

ceed with the setup instructions for

PULSE BREW - ENTER TIMES,

page 23. After SET

SETTING

PULSE BREW has been accomplished, the next
function will be SET PREINFUSION. (Refer to page
24 for description of SET PREINFUSION function.

P2416

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

for that particular batch size.

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

14. When finished 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 page 20 for description of SET
PULSE BREW function.

16. To SET PULSE BREW, if setting pulse brew BY
EXAMPLE (brewing into a funnel) press YES and

proceed with the setup instructions for

PULSE BREW - BY EXAMPLE,

on page 22.

SETTING

P2417

18. To SET PREINFUSION press YES in the SET PRE-
INFUSION screen to proceed. The display should
now read ON TIME and a batch light will be

blinking.

19. Using (-) and (+), set the amount of time the brew
water will initially presoak the grounds for that

particular batch size.

20. When finished, press another batch size and re­peat until all three batch sizes are set.

21. When finished, press DONE. The display should
now read OFF TIME and a batch light will be

blinking.

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35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SET NEW RECIPES (cont.)

22. Using (-) and (+), set the amount of time the brew

cycle will delay (after the presoak cycle shuts off)
before resuming brewing.

23. When finished, press another batch size and re­peat until all three batch sizes are set.

24. When finished setting all batch sizes, press DONE.
The display will show the ON and OFF TIMES that

were entered for a particular batch size. After a 5

second delay, the display should read 3 BATCHES

DONE.

25. If the three batches are not complete, press NO in
order to return to SET PREINFUSION, and repeat

steps 19 through 24.

26. If the three batches are correct, press YES. This will
advance to the next function, SET DRIP TIME.
(Refer to page 25 for description of SET DRIP
TIME function.)

27. 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.

28. 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 engag-

ing (to disable this function), for a particular batch

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

29. When finished, press another batch size and re­peat step 28 until all three sizes are set.

30. When finished setting all batch sizes press DONE.
The display should read 3 BATCHES DONE?.

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

steps 28 through 30.

32. If the three batch sizes are correct, press YES. The

screen should show the name of the coffee being

programmed (modified) along with SETUP COM-
PLETE.

32. 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.

P2418

Page 14

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (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'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 informa-

tion can include the coffee name, BREW VOLUMES,

BYPASS PERCENTAGES, PULSE BREW TIMES, PRE­INFUSION 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.

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.

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.

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

CONTAINS RECIPE FOR then will change to (COF-
FEE NAME) SHOW QUIT SAVE. All brewing pa-

rameters for that coffee flavor 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.

P2300

Page 15

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SET NEW RECIPE:

®

If not using a Smart Funnel
or a G9-2T DBC 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 Grinder. If a
standard funnel, or if a non-DBC grinder is used the

brewer will automatically select a NO NAME coffee

flavor when the pad 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 PERCENT-

AGES, PULSE BREW TIMES, PREINFUSION 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 18.

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.

(with a sensor coil) and/

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 16

PROGRAMMING FUNCTIONS - LEVEL 2 (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 pro-

grammed into the brewer.

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

NAME coffee BREW VOLUMES, BYPASS PERCENT­AGES, PULSE BREW TIMES, PRE-INFUSION TIMES
and DRIP-OUT TIMES.

Procedure for reviewing recipes:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ®. Press the ®

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 flavor name. When finished, the display
will return to the coffee name just viewed.

4. To see settings again, press SHOW. To advance
to the next coffee flavor 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 of the

pads located on the

front switch panel to exit the programming mode

and return to the MAIN SCREEN.

P2360

Page 17

35058 121102

BREW OZ (SETTING OR ADJUSTING BREW VOL­UMES)

This function allows adjustment of the brew vol­umes for each batch. The indicator signifies volume in
ounces per batch.

Procedure for modifying recipes - brew ounces:
Range: 10.0 oz to 400 oz for all three batch sizes

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Press the

® 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 modified.

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 modified.

Page 18

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

% BYPASS

This function allows adjustment of the amount of
water that bypasses the grounds. The number signi­fies the percentage of the brew volume which does not
flow 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 the ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Press the

® 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 modified.

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 modified.

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

for that particular batch size.

8. When finished, press another batch size and re­peat step #7 for each batch to be modified.

9. When finished 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 of the

pads to exit the %

BYPASS setup and return to the MAIN SCREEN.

Page 19

P2292

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SET PULSE BREW:

This function allows the operator to program the
brewer to "pulse” the sprayhead flow on and off dur­ing a brew cycle (start and stop the flow of water out
of the sprayhead). This feature allows the ability to
“fine-tune” the brewer for specific flavor profiles. Pulse
brewing can be set up for any and all batches.

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

the pad 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 fills the funnel to a desired higher

level. (Soaking the grounds).

These three times can be set two different ways.
The first is by observing the flow of water for on and

off times. This is accomplished by utilizing the SET
BY EXAMPLE 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.

Page 20

Page 21

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

Setting Pulse Brew - BY EXAMPLE:

1. This display should read CONTAINER READY?

Place a container under the left side sprayhead.

Place a brew funnel containing a filter and grounds

on top of the container so that the spray and cof-

fee bed can be viewed. (See Fig. 1)

2. Choose the batch size to be set by pressing the

pad next to the indicator light on the left brew side.

The batch size indicator selected will be flashing.

3. If everything is in place, press YES in the CON-

TAINER READY? screen. The display should read

PRESS BREW TO START 1ST ON TIME. (a)

4. Press and release the pad. The brew water

will start to flow into the funnel and the water level

will rise. (b)

5. Watch the flow of water. When it reaches the de-

sired level in the funnel, press and release the

pad again to end the 1ST ON TIME. (c)

6. The spray will stop and the brew funnel will start

to empty. When the water level in the funnel drains

P2613

FIG. 1

to the desired level, press again to end the

OFF-TIME. This also begins the spray of water for

the final setting. (d)

7. The brew water will begin again and the water level

in the funnel will rise. Watch the flow of water.

When it reaches the desired level, press to

end the LAST ON TIME. (e)

8. The display should now show the 1st, off and last

times for the batch size just programmed. After a

5 second delay, the display will read 3 BATCHES

DONE? (f and g)

9. If other batches need to be modified, press NO.

The display will go back to SET BY EXAMPLE.

Press YES, then press a different batch size pad

and repeat steps 1 through 8. Repeat until all the

desired batch sizes are set for the left side. (g)

10. When finished press YES in 3 BATCHES DONE?.

The display will then read SET PREINFUSION.

Another alternative is to press and release either

of the pads located on the front panel of the

brewer to exit SET PULSE BREW and return to

the MAIN SCREEN.
NOTE: Pressing ® before reaching the final setting

screen exits the setup and retains the old values.

Page 22

P2410

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

Setting Pulse Brew - ENTER TIMES:

NOTE: No water should flow from the brewer during

this set-up process.

1. This display should read 1ST ON TIME X:XX.

Choose the batch size to be set by pressing the
pad next to the indicator light on the left brew side.
The batch size indicator selected will be flashing.

2. Adjust the 1ST ON TIME using (-) and (+). When
finished, press DONE. (a)

3. The display will now read OFF TIME X:XX. Adjust
the OFF TIME using (-) and (+). When finished,
press DONE.(b)

4. The display will now read LAST ON TIME X:XX.
Adjust the LAST ON TIME using (-) and (+). When
finished, press DONE.(c)

5. The display will show the three times just entered
for that batch size. After a 5 second delay, the dis-

play will read 3 BATCHES DONE?(d and e)

Page 23

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SET PREINFUSION

This function allows the operator to set an initial
soaking of the grounds and a delay time, before the
complete brew cycle starts.

Procedure for Modifying preinfusion times:
Range: On time - off to 4 minutes

Off time - off to 4 minutes for all three batch

sizes

NOTE: If the brewer is already in the SET PREINFU-
SION 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 ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Press the

® 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 modified.

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 SET PREINFUSION.

10. Press YES to proceed. The display should now

read ON TIME and a batch light will be blinking.

11. Using (-) and (+), set the amount of time the brew

water will initially presoak the grounds for that

particular batch size.

12. When finished, press another batch size and re-

peat until all three batch sizes are set.

13. When finished, press DONE. The display should

now read OFF TIME and a batch light will be

blinking.

14. Using (-) and (+), set the amount of time the brew

cycle will delay (after the presoak cycle shuts off)

before resuming brewing.

15. When finished, press another batch size and re-

peat until all three batch sizes are set.

16. When finished, press DONE. The display will show
the ON and OFF TIMES that were entered for each

particular batch size.

17. After a 5 second delay, the display should read 3
BATCHES DONE?. If the three batches are not
complete, press NO in order to return to SET
PREINFUSION, and repeat steps 10 through 14.

18. If the three batches are done, press YES. This will
advance to the next function, SET DRIP TIME.

Another alternative is to press and release either of

the pads located on the front panel of the

brewer to exit SET PREINFUSION and return to the
MAIN SCREEN.

Page 24

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

DRIP TIME (now displayed on "non" funnel lock units
as well)

This function allows the setting or modification of
the funnel locks to stay engaged after the end of a
brew cycle. This ensures that the funnel cannot be
removed until after the liquid has emptied out of the
funnel.

Procedure to 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 10
in this section, but proceed directly to step 11.

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Press the

® 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 modified.

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 SET PREINFUSION.

10. 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.

11. Using the (-) and (+), set the amount of time from

when the brew solenoid shuts off to when drip-out

occurs for that batch size.

Page 25

P2297

COPY SETTINGS (NO NAME COFFEE SETTINGS ONLY)

This function is used to transfer all the brew

settings from a NO NAME coffee flavor programmed
on one side of the brewer to the other side. A NO NAME

coffee is a flavor that is not in the grinder's memory or
is what appears if a Smart Funnel® is 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 ® pad until the display reads

SET RECIPES. Release the ® pad. Continue to

press and release the ® pad until the display reads

COPY SETTINGS.

Page 26

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

ENABLE ADS?

This function allows the operator to choose whether
or not to display the advertising message that was

entered into the brewer with an AD CARD. This mes-

sage will be displayed when the brewer is not in use.

P2301

Procedure to Enable/Disable Ads:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ®. Press and

release the ® until the display reads ENABLE ADS.

The YES or NO will be flashing to indicate the

current selection.

2. Press and release the NO pad to disable this

function (no ads will be displayed on the screen),

or;

3. Press and release the YES pad to enable this

function (ads will be displayed on screen).

4. When finished, 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

P2303

exit the ENABLE ADS function and return to the

MAIN SCREEN.

SET TEMP - Range: 185˚F (85˚C) to 205˚F (96˚C)

This function allows the operator to set the brew
water temperature in the tank. It also sets the hot water
faucet dispense temperature.

P2302

Procedure to set brew temperature:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release button. Press and

release the ® until the display reads SET TEMP.

Procedure to set ready temperature:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Press and
release the ® pad until the display reads SET
READY.

2. To adjust the ready temperature, press the (-)
button to decrease, or (+) to increase the ready

temperature.

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

Another alternative is to press and release either of

the

Page 27

L BYPS OZ/M: XX.X

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

REFILL - Range: 0 to 155

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

P2304

Procedure to set the sensitivity threshold of the refill
circuit:
NOTE: Make sure the water in the tank is touching the

refill probe.

1. Press and hold the ® until the display reads SET

NEW RECIPES. Release the ®. Press and release

the ® pad until the display reads REFILL and

shows a number on both sides of the word.

2. To adjust the threshold setting, press (-) to de-

crease, or (+) to increase the setting.
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 refill probe in the tank.

release the ® pad until the display reads L SPRY
OZ/M. The number represents what the brewer

thinks is the flow rate of the left side sprayhead in
ounces per minute (OZ/M).

2. If the actual flow rate of the sprayhead is known,
but is different than the number on the display, use

the (-) and (+) pads to enter the correct flow rate

in ounces per minute.

3. Press and release the ® pad until the display reads

R SPRY OZ/M and repeat 1 and 2 for the right side
sprayhead. When finished, press and release DONE.

This saves the new setting and advances to the

next function screen, L BYPS OZ/M. Another alter-

native is to press and release the

pad located

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

L/R BYPS OZ/M

This function allows the operator to view or to

enter the actual flow rate coming out of the bypass

nozzle for each side of the brewer. This is NOT used to

change the actual flow rate, but to tell the internal
controller how fast the water is flowing. The unit of
measure is ounces per minute (OZ/M).

3. When finished, press and release DONE. This

saves the new setting and advances to the next

function screen, L SPRY OZ/M. Another alterna-

tive is to press and release either of the

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

L/R SPRAY OZ/M

This function allows the operator to view or to

enter the actual flow rate coming out of the sprayhead

for each side of the brewer. This is NOT used to change

the actual flow rate, but to tell the internal controller
how fast the water is flowing. The unit of measure is
ounces per minute (OZ/M).

L SPRY OZ/M: XX.X

P2606

Procedure to adjust the flow rate setting:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ®. Press and

pads

Procedure to adjust the flow rate setting:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ®. Press and
release the ® pad until the display reads L BYPS
OZ/M. The number represents what the brewer

thinks is the flow rate of the bypass valve in ounces
per minute.

2. If the actual flow rate of the bypass valve is known,
but is different than the number on the display, use

the (-) and (+) pads to enter the correct flow rate

in ounces per minute.

3. Press and release the ® pad until the display reads

R BYPS OZ/M and repeat 1 and 2 for the right side

bypass valve. When finished, press and release

the DONE pad. This saves the new setting and
advances to the next function screen, CALIBRATE
FLOW. Another alternative is to press and release

the pad located on the front switch panel to

exit the BYPS OZ/M function and return to the

MAIN SCREEN.

Page 28

P2607

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

CALIBRATE FLOW

This function allows the operator to enter the
actual flow 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 flow rate:

1. Place a container, accurately graduated in ounces,

and with a minimum capacity of 60 ounces, be-

neath the funnel on the side of the brewer to be

calibrated.

2. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Press and

release the ® pad until the display reads CALI-

BRATE 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 the YES pad. The display should

read CONTAINER READY? If the container is un-

der the funnel, press YES. The display should read

CALIBRATE SPRAY .. PRESS BREW TO START.

5. Press and release the

pad 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

LEFT or RIGHT OZ., along with a number signify-

ing ounces per minute.

6. Measure the amount of water in the container and

using the (-) or (+) pads, 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 flow 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

and release the pad located on the front

Left or Right

L or R

LEFT OZ XX.X

NEW L SPRY FLOW

XX.X OZ/M

P2608

switch panel to exit the CALIBRATE FLOW func-

tion and return to the MAIN SCREEN.

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

Page 29

35058 121102

CALIBRATE FLOW (cont.)
Procedures to calibrate the bypass flow rate:

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

2. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Press and
release the ® pad until the display reads CALI-
BRATE 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 NO to advance to the BYPASS
CALIBRATION screen.

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

CALIBRATE BYPASS .. PRESS BREW TO START.

6. Press and release the pad on the side to be

calibrated. The display should read CALIBRATE
BYPASS .. 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

LEFT or RIGHT OZ., along with a number signify-

ing ounces per minute.

7. Measure the amount of water in the container, and

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

to match the amount in the container. Then press

DONE.

8. The display should now read NEW L or R BYPS
FLOW, along with the correct flow rate of the

bypass in ounces per minute. After about 5 sec-

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

9. To exit the CALIBRATE FLOW function, press and
release NO to advance to the next function screen,

or press and release the pad located on the

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

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

Page 30

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

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.

P2308

Procedures to view/reset the brew counters:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ®. Press and

release the ® pad until the display reads BREW

COUNTERS.

2. Pressing NO in this screen will advance to the next

function. Press YES to view the first brew counter

(left). This number represents the brew cycles

initiated since that counter was last reset.

3. To advance to the other counters, press and re-

lease NEXT. The four counters are as follows:

LEFT - total brews on the left side (resettable)

RIGHT - total brews on the right side (resettable)

LEFT AND RIGHT - total brews on the left and right

sides combined (resettable)

LEFT AND RIGHT - total brews on the left and right

sides combined (non-resettable)

4. To reset any of the counters to zero (except for the

non-resettable counter), press and release RESET

when viewing that particular counter's screen.

5. When finished, press NEXT to advance counter
screens until the display reads BREW COUNTERS.
Press and release NO to advance to the next

function screen, or press and release either of the

pads on the front switch panel to exit the

BREW COUNTERS function and return to the MAIN
SCREEN.

FUNNEL LOCKOUT

This function allows the operator to prevent the

start of a brew cycle if a Smart Funnel

®

is not posi-

tioned correctly in the funnel rails.

FUNNEL DETECT ?

Procedure to set funnel lockout:

1. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ®. Press and
release the ® pad until the display reads FUNNEL
DETECT.

2. NO or YES should be flashing to indicate the

current 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 finished, press and release DONE. This will

retain the changes, exit this function screen and
advance to the next. Another alternative is to press

either of the pads located on the front switch

panel to exit the FUNNEL DETECT and return to the

MAIN SCREEN.

P2309

®

Page 31

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SERVICE TOOLS

This function allows the testing of individual com­ponents and the ability to check switches for proper
function. This function also tests the funnel sensor
coil's frequency (diagnostic tool for troubleshooting

purposes only). Pressing NO will forward to the next
function FACTORY DEFAULTS.

P2610

Page 32

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SERVICE TOOLS (cont.)

Testing individual components (outputs):

This will allow the operator to test the operation of
individual components and outputs of the brewer. The
components that can be individually tested are as
follows:
Left Brew Valve
Left Bypass
Left Funnel Lock
Right Brew Valve
Right Bypass
Right Funel Lock
Refill Valve
Tank Heaters
Heater Contactor

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 ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Continue

pressing and releasing the pad 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 flow of water.

9. Press NEXT to advance to the next component to

be tested.

13. To test LEFT FUNNEL LOCK, press ON. If the

funnel 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 refill valve

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

18. Press OFF to end testing of refill 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 ad-

vance 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 confirm the voltage is zero.

25. Press NEXT to return to TEST OUTPUTS.

26. To exit SERVICE TOOLS, press and release the

pad located on the front switch panel. This

will return to the MAIN SCREEN.

Procedure to test switches:

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 flow of water.

12. Press NEXT to advance to the next component to

be tested.

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 ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Continue
pressing and releasing the ® pad until SERVICE
TOOLS appears.

Page 33

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SERVICE TOOLS (cont.)

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 NOTH-
ING PRESSED.

8. From this screen, press any of the switches on the
front of the brewer. 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.

9. After all switches have been tested, press and

release either of the pads located on the front

3. Press and hold the ® pad until the display reads

SET NEW RECIPES. Release the ® pad. Continue
pressing and releasing the ® pad 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 of the pads located on the front switch

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

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 server beneath each brew funnel.

NOTE: If the operator wishes to test more than one

function in the SERVICE TOOLS section (outputs,

switches, or coil frequency), it is not necessary to

exit the program. Use the flow chart for SERVICE
TOOLS to navigate to a particular function.

Page 34

35058 121102

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

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.

P2312

FACTORY DEFAULT VALUES

Brew Lockout YES

BREW VOLUMES:
Small Batch 64 oz.
Medium Batch 128 oz.
Large Batch 192 oz.

BYPASS PERCENTAGE:
Small Batch 0%
Medium Batch 0%
Large Batch 20%

PULSE BREW TIMES:
Small Batch :20 (1st on)- :15 (off)- :05 (last on)
Medium Batch 1:00 (1st on)- :10 (off)- :20 (last on)
Large Batch :40 (1st on)- :15 (off)- :20 (last on)

PREINFUSION TIMES:
Small Batch DISABLED
Medium Batch DISABLED
Large Batch DISABLED

Procedure to set factory defaults:

1. Press and hold the ® pad until SET NEW RECIPES

appears. Release the ® pad. Press and release ®

until the display reads FACTORY DEFAULTS.

2. Pressing NO in this screen will revert to the MAIN

SCREEN. Press YES to replace the defaults. This
advances to WILL REPLACE ALL BREWING SET-

TINGS. This screen will alternate with ARE YOU
SURE?.

3. Pressing NO in the confirmation screen will revert

to MAIN SCREEN, without resetting the brewing
setups to the defaults. Press YES to load the
defaults. This will then revert to the MAIN SCREEN,
and the factory default values will replace all

previously entered values. It will NOT reset the
summation Brew counter.

DRIP OUT TIMES:
Small Batch 1:00
Medium Batch 1:30
Large Batch 2:00

ENABLE ADS YES

BREW TEMPERATURE 205˚F (96˚C)

READY TEMPERATURE 195˚F (91˚C)

REFILL 0 - 155

SPRAY (OZ/MINUTE) 53

BYPASS (OZ/MINUTE) 48

FUNNEL DETECT YES

Page 35

35058 121102

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 qualified 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
permanent. 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
solenoids are energized for more than ten minutes without a supply of water.

• The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened.
This will help avoid twists and kinks in the tubing.

• Make certain that all plumbing connections are sealed and electrical connections tight and isolated.

• 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
specified.

• Follow recommended service procedures.

• Replace all protective shields or safety notices.

Screen Displayed

Possible Cause

1. Overflow cup is full of water.

1. SMART FUNNEL

®

not fully in-

serted into the funnel rails.

2. Not using a SMART FUNNEL

®

and the FUNNEL DETECT function is

activated (on).

Troubleshooting Procedures

Empty cup

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

,

Disable the FUNNEL DETECT func-

tion. See page 31 for procedure.

Page 36

35058 121102

TROUBLESHOOTING (cont.)

Screen Displayed

Possible Cause Troubleshooting Procedures

1. Water temperature in the tank

does not meet the SET READY TEM-

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

PERATURE.

(b) Disable the BREW LOCKOUT

function. See page 10 for proce­dure.

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

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

finished.

OR

Press BREW to start a brew cycle

without removing the funnel.

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.

OR

Press ON/OFF to terminate the cycle.

Page 37

35058 121102

TROUBLESHOOTING (cont.)

Screen Displayed

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.

OR

Press ON/OFF to terminate the brew

cycle.

Service Required

Service Required

3. Control Board/Thermistor failure

Service Required

Page 38

35058 121102

TROUBLESHOOTING (cont.)

Screen Displayed

1. Water shut off to brewer

2. Inlet Solenoid Valve failure

3. Control Board Failure

1. Temperature Sensor Probe wire(s)
broken or not making connection.

Troubleshooting ProceduresPossible Cause

Check water supply shut-off

Service required

Service required

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

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

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

Page 39

35058 121102

TROUBLESHOOTING (cont.)
Problem

Equipment will not operate.

Brew cycle will not start.

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

Troubleshooting Procedure

Measure the voltage at the terminal
block and confirm that it matches
the voltage specified 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

Individual Components

Testing

on page 33.

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

Automatic refill will not operate or
display shows FILL TIME TOO LONG

1. No water

2. Water strainer

Check plumbing and shut-off valves.

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

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

Page 40

35058 121102

TROUBLESHOOTING (cont.)
Problem

Possible Cause

Troubleshooting Procedures

Water flows into tank continuously
with power applied to brewer.

1. Refill Probe or Sensitivity Setting

Check the sensitivity setting. Refer
to the

Refill

function on page 28. If
the left three digit number is less
than the right number, the machine
“thinks” it is full and the refill valve
should be off. If the left number is
larger than the right, then the refill
valve will automatically be turned on
to fill 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 refill 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, confirm that the refill
probe is free of scale buildup and the
connection to it is secure.

Water will not heat or display shows
HEATING TIME TOO LONG

2. Electronic Control Board

1. Limit Thermostat

CAUTION - Do not eliminate or by-

pass limit thermostat. Use only re­placement part #23717.0001.

2. Tank Heaters

Page 42

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 121102

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

vidual Components

Testing Indi-

on page 33. 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.

Remove power from the brewer.
Connect a voltmeter across one of
the tank heaters. Reapply power to
the brewer and refer to

vidual Components

Testing Indi-

on page 33. 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.

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

Page 43

35058 121102

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 flow 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

ing Individual Components

Test-

on page

33. Turn the valve on for 30 seconds
and collect the water dispensed from
the sprayhead. Repeat the test sev­eral times to confirm 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

vidual Components

Testing Indi-

on page 33. Turn
the valve on for 30 seconds and
collect the water collected from the
bypass opening. Repeat the test sev­eral times to confirm 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 fittings, tubing,
valves and sprayhead.

Page 44

35058 121102

TROUBLESHOOTING (cont.)

Problem Possible Cause

Consistently high or low beverage

1. Brew Volume adjustment

level in server.

Dripping from sprayhead.

Water overflows filter.

1. Brew Valve

1. Type of paper filters

2. No sprayhead

Beverage overflows 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 filters should be used
for proper extraction.

Check sprayhead

The brew cycle should be started
only with an empty server under the
funnel.

Adjust the brew volume as required
to achieve the recommended vol­ume for each brew cycle.

Weak beverage.

1. Type of paper filters

2. Coffee

3. Sprayhead

4. Funnel Loading

5. Water temperature

®

BUNN

paper filters should be used

for proper extraction.

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

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

The BUNN® paper filter should be
centered in the funnel and the bed of
ground coffee leveled by gentle shak­ing.

Empty the server, remove its cover,
and place the server beneath the
sprayhead. Place empty funnel over
the server entrance, with ON/OFF
switch in the "ON" position press the
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 45

35058 121102

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 46

35058 121102

Page 47

Page 48