Bunn Dual SH User Manual

DUAL® SH

CAUTION

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PN: 658

1985 BUNN-O-MATIC

CORPORATION

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INSTALLATION & OPERATING MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: [phone] FAX: [phone]

29877.0000 12/03 ©2001 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 tag" 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.

Page 2

29877 040802

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

Server Detect ......................................................................................... 32

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

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

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

Test Servers....................................................................................................................34

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

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

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

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

Page 3

29877 121302

USER NOTICES

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

00658.0000

10044.0000

20201.5600

00831.0000

00656.0000

03409.0000
Page 4

03408.0000

29877 040201

ELECTRICAL REQUIREMENTS

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

Initial Set-Up.

L2 RED

200 or 240V A.C.

L1 BLACK

Requires 2-wire, grounded
service rated 200, 230 or 240
volts ac, 30 amp, single phase
50 or 60 Hz.

L2 RED

WHITE

NEUTRAL

L1 BLACK

120V A.C.

208 or 240V A.C.

120V A.C.120V A.C.

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

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 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 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

.

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

29877 120203

OPERATING CONTROLS

h

f

e

d

a

g

c

b

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.

Page 6

29877 040802

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 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) BREW TEMPERATURE TOO LOW - wait until heated or cancel BREW LOCKOUT option. (Page 10)
b) FUNNEL NOT IN PLACE (or using a standard brew funnel) - cancel FUNNEL DETECT option. (Page 31)
c) CHECK FUNNEL - remove funnel, empty previously brewed grounds and grind a new batch into the funnel.
d) SERVER NOT IN PLACE - place Soft Heat® Server, or cancel SERVER DETECT option. (Page 32)

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.

Page 7

29877 080301

GLOSSARY

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

messages into the brewer.

BREW LOCKOUT: The inability to initiate a brew if the water temperature is less than the ready temperature

programmed into the brewer.

BYPASS: The 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 or preinfusion, 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 BrewWISE Grinder.

SERVER DETECT: Sets the inability to initiate a brew cycle if the server is not properly placed on the stand below

the brew funnel.

SOFT HEAT®: The type of server and brewer which are used as part of the Smart Funnel® system. The server is

placed on the brewer, and is connected through the receptacles on the brewer. The server contains a
temperature-controlled heater which maintains the coffee at a constant temperature.

Page 8

29877 120203

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

P2289

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.

Page 9

29877 080301

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 pads located on the front switch

panel. The display will return to the MAIN SCREEN.

If none of the five 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 - SET BY EXAMPLE, CALIBRATE FLOW and testing the brew and bypass valves in SERVICE

TOOLS/TEST OUTPUTS.

MAIN SCREEN

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.

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:

Press here

for NO

The YES or NO should be flashing. 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 finished, press and release DONE. This will
exit this function screen and return to the MAIN
SCREEN on the display.

Press here

for DONE

Press here

for YES

Page 10

29877 080301

PROGRAMMING THE BREWER (cont.)
PROGRAM FUNCTIONS - LEVEL 2

There are three methods of programming the

various brewing parameters of the Dual

®

Smart Funnel

Brewer.

®

SH with

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.

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 PER-

CENTAGES, 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

SH 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

29877 121302

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 descrip­tion of BREW OZ. function).

P2299

Page 12

P2415

29877 121302

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 pro­ceed 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.

Page 13

29877 090401

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

29877 080301

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SET NEW RECIPE
Using a RECIPE CARD to load coffee names and brew

®

settings into the Dual

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 informa­tion 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.

SH DBC with Smart Funnel®:

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

RECIPIE 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.

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

FLAVOR

(COFFEE NAME)

NOT SAVED

(COFFEE NAME)

SETUP COMPLETE

P2300

Page 15

29877 121302

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® 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® 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/

P2419

NOTE: Before beginning setup, insert a funnel into the
left and right side funnel rails, and place a Soft Heat
Server beneath each brew funnel.

®

Page 16

29877 080301

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.

Page 17

29877 080301

BREW OZ (SETTING OR ADJUSTING BREW VOL­UMES)

This function allows adjustment of the brew vol-

umes 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.

Page 19

29877 080301

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SET PULSE BREW (cont.)

Page 21

29877 080301

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 cof­fee 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

P2288

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

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

Page 23

29877 080301

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 PREINFUSION
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 re­peat 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 re­peat 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

29877 080301

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.

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 25

P2297

29877 080301

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 mes­sage 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

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.

Page 27

29877 080301

P2306

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 BYPASS
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. 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 either of the
pads located on the front switch panel to exit the

BYPASS OZ/M function and return to the MAIN
SCREEN.

Page 28

29877 080301

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

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

29877 121302

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

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 sec­onds, 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

P2609

29877 121302

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.

Page 31

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SERVER DETECT

This function allows the operator to prevent the

®

start of a brew cycle if a Soft Heat

server is not

positioned correctly on the brewer.

SERVER DETECT ?

P2310

Procedures to set server detect:

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

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

2. The NO or YES flashes to indicate the current

selection.

3. Select YES to prevent brewing if the Soft Heat

server is not correctly positioned on the brewer
beneath the funnel.

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

®

NOTE: If YES is selected and a brew cycle is attempted
with a server not properly placed, the display will read
SERVER NOT IN PLACE.

4. Select NO to allow brewing without a Soft Heat

server in place. This is selected when brewing into
a container other than a Soft Heat® Server.

5. When finished, press and release DONE. This will

save the new setting, exit the function screen and
advance to SERVICE TOOLS. Another alternative

is to press either of the pads located on the
front switch panel to exit the SERVER DETECT

function and return to the MAIN SCREEN.

®

P2311

Page 32

29877 121302

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:

12. 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. To test LEFT SERVER, press ON. If the server and

the sensor are functional, the light on the lower
right corner of the server will illuminate.

17. Press OFF to end testing of server.

18. Press NEXT to advance to the next component to

be tested.

19. Follow steps 7 through 15 to test the right side
components.

20. To test REFILL VALVE, press ON. If the refill valve
is functional, the sound of the valve operating will
be heard.

21. Press OFF to end testing of refill valve.

22. Press NEXT to advance to the next component to
be tested.

23. To test TANK HEATERS, connect a voltmeter across
each of the tank heaters to check for voltage.

24. Press ON. The correct voltage should be present at
the heater terminals.

25. Press OFF to end testing of the tank heaters.

Page 33

NOTE: The tank heater will automatically turn off if left
on too long.

26. After testing the tank heater, press NEXT to ad-
vance to the next test.

27. 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.

28. Press NEXT to return to TEST OUTPUTS.

29. To exit SERVICE TOOLS, press and release either
of the pads 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.

29877 121302

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

SERVICE TOOLS (cont.)

2. Place a Soft Heat® 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. 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 ® buttons located on the front
switch panel. This will exit TEST SWITCHES and
return to the MAIN SCREEN.

Procedures to test servers:

This function allows the operator to test the opera-

tion of the Soft Heat® servers. It will also show if the
server is correctly placed on the brewer stand.

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 ® 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

Page 34

6. In TEST OUTPUTS screen, press NO. This ad­vances to TEST SWITCHES. Press and release NO
once more. The display should now read TEST

SERVERS

7. Press YES in the TEST SERVERS screen to show
if a server is in place. The display should read IN
PLACE with arrows pointing to the left and right

8. Lift and pull both Soft Heat servers forward about
2 inches so that the two contacts on each server do
not touch the two contacts on the brewer.

9. The display should then read SERVER REMOVED
with arrows pointing to the left and right.

10. After the servers have been tested, press and
release either of the pads located on the front
switch panel. This will exit TEST SERVERS 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 ® 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.

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 flow chart
for SERVICE TOOLS to navigate to a particular
function.

29877 121302

PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)

FACTORY DEFAULTS

This function allows the operator to erase all of the

previously entered recipes and ad messages. Factory­set 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 20%
Large Batch 20%

PULSE BREW TIMES:
Small Batch 40 (1st on) - 10 (off) - 5 (last on)
Medium Batch OFF
Large Batch OFF

PREINFUSION TIMES:
Small Batch OFF
Medium Batch OFF
Large Batch OFF

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 200˚F (93˚C)

READY TEMPERATURE 195˚F (91˚C)

REFILL 155

SPRAY (OZ/MINUTE) 39.2

BYPASS (OZ/MINUTE) 24.1

FUNNEL DETECT YES

SERVER DETECT YES

Page 35

29877 121302

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. Soft Heat

®

Server not correctly

positioned on base.

2. Not using a Soft Heat® Server, and
the SERVER DETECT function is ac-
tivated (on).

Troubleshooting Procedures

Empty cup

Position the server so that the con­nector pins on the server make con­tact with connector on the brewer.

Disable the SERVER DETECT func­tion. See page 32 for procedure.

Page 36

29877 121302

TROUBLESHOOTING (cont.)

Screen Displayed

Possible Cause Troubleshooting Procedures

1. SMART FUNNEL not fully inserted
into the funnel rails.

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

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

Disable the FUNNEL DETECT func-
tion. See page 32 for procedure.

tivated (on).

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

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

Press BREW to start a brew cycle
without removing the funnel.

To resume brewing, correctly posi­tion 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

29877 121302

TROUBLESHOOTING (cont.)

Screen Displayed

1. Soft Heat® Server was moved out
of position after the brew cycle was
started.

1. ON/OFF switch was pressed after
the brew cycle was started.

Troubleshooting ProceduresPossible Cause

To resume brewing, correctly posi­tion the Soft Heat® Server and press
BREW again. The brew cycle re­sumes from the point it was inter­rupted.

OR

Press ON/OFF to terminate the brew
cycle.

To resume brewing, press BREW
again. The brew cycle resumes form
the point it was interrupted.

1. Tank Heater failure

2. Triac Failure

3. Control Board/Thermistor failure

OR

Press ON/OFF to terminate the brew
cycle.

Service Required

Service Required

Service Required

Page 38

29877 090401

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

29877 090401

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/flow control
(.750 GPM)

Check plumbing and shut-off valves.

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

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

Page 40

29877 091201

TROUBLESHOOTING (cont.)

Problem

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

Possible Cause

3. Refill Probe or Sensitivity
Setting

Troubleshooting Procedure

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 flows into tank continuously
with power removed from brewer.

4. Refill Valve

5. Overflow Protection Switch

6. Electronic Control Board

1. Refill valve

Page 41

Test the Refill valve. Refer to

Individual Components

Testing

on page 33

When this condition occurs, the
brewer will display OVERFLOW CUP
FULL. EMPTY CUP. The reason for
overfilling could be a defective refill
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.

29877 091201

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 by­pass 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.

29877 091201

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 compo­nents 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

29877 091201

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/flow control (.750 GPM)

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/flow con­trol 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

Page 44

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.

29877 091201

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 #01082.0002
should be used to properly wet the
bed of ground coffee in the funnel.

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

Empty the server, remove its cover,
and place the server beneath the
sprayhead. Place empty funnel over
the server entrance, with ON/OFF
switch in the "ON" position press the
start switch and release it. Check the
water temperature immediately be­low the sprayhead with a thermom­eter. The reading should not be less
than 195˚F (91˚C).

Page 45

29877 091201

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

29877 091201

Page 47

L1

BLK-14

BLK-14

LIMIT THERMOSTAT

BLK-14

BLK-14

SCHEMA TIC WIRING DIA GRAM

DUAL SH DBC (W/SMART FUNNEL)

GRN/YEL

BLK

RED

EMI

FILTER

RED

BLK

MT2

TRIAC

MT1

L1

L2

L4 L5 L6 L7 L8 L3

MT2

TOUCH SWITCH ASSEMBLY

C1 A1 B1 B2 A2 A3 A4 D1 D2 D3 C2 C3 C4 C5 C6

TRIAC

BLU-14

MT1

BLU-14

THERMAL

SAFETY FUSE

THERMAL

SAFETY FUSE

RIGHT

TANK HEATER

LEFT

TANK HEATER

THERMAL

SAFETY FUSE

THERMAL

SAFETY FUSE

L2

RED

RED

WATER LEVEL

PROBE

LEFT

FUNNEL SENSOR

WHI/VIO

RIGHT

FUNNEL SENSOR

WHI/YEL

TEMP

PROBE

230 VOLTS AC

2 WIRE

SINGLE PHASE

50HZ

SHEILD

1

J4-1

VIO

J9-1

J4-5

J4-10

YEL

J9-5

WHI

PNK
BLK
BLK

BLK
WHI/RED
RED/BLK

GRN

J2-1

J2-5

J2-10

CONTROL PC BOARD

BLK

LEFT
SERVER
TRANSFORMER

BLU/BLK

RESETTABLE

FUSE

24VDC

BLK

AC

RED

4

AMP

BLU/BLK

AC

RECTIFIER

29876.0001A 08/02 © 2002 BUNN-O-MATIC CORPORATION

RED

J4-15

BLU/BLK

4

AMP

AC

RECTIFIER

J11-10

J11-18

AC

J11-1

J11-5

J4-19

RESETTABLE

BLK

20

VIO
WHI/RED
WHI/ORA
WHI/GRN
ORA
GRY
WHI/VIO
TAN
TAN
YEL
BLK

RED
BRN/WHI
BRN/BLK
BLU
BLU/BLK

BLK

FUSE

24VDC

RIGHT
SERVER
TRANSFORMER

L. BYPASS

SOL

SOL

RED

N.C.

OVERFLOW

PROTECTION SWITCH

SOL

R. FUNNEL LOCK

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

Touch Switch 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

REFILL

SOL

R. BYPASS

SOL

R. BREW

L. BREW

SOL

RED

SOL

L. FUNNEL LOCK

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

WHI

WHI

WHI

WHI

RED

RED

RED

Page 48

29877 120203