SINGLE TF DBC
W/SMART FUNNEL®
S/N SNG0033000 & UP
INSTALLATION & OPERATING MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
35879.0001A
07/05 ©2005 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 (217) 529-6601 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.
BUNN, SINGLE, ThermoFresh, BrewWise, SMART FUNNEL, Pulse Brew, DBC are either trademarks or registered trademarks of Bunn-O-Matic® Corporation.
INTRODUCTION
The brewer incorporates a wireless interface system that allows the DBC Grinder to load certain information
into the "programming chip" located inside the handle of the funnel. This information includes what 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
35879.1 071405
TABLE OF CONTENTS
User Notices ...............................................................................................................................4
Electrical .....................................................................................................................................5
Plumbing Requirements .............................................................................................................7
Operating Controls ......................................................................................................................8
Initial Setup .................................................................................................................................9
Coffee Brewing............................................................................................................................9
Cleaning ....................................................................................................................................10
Glossary ....................................................................................................................................11
PROGRAMMING ......................................................................................................................12
Programming Switches.............................................................................................................12
Programming the Brewer ..........................................................................................................13
PROGRAM FUNCTIONS (LEVEL 1) Brew Lockout ...................................................................13
PROGRAM FUNCTIONS (LEVEL 2) ...........................................................................................14
PROGRAM FUNCTIONS (FLOW) ..................................................................................................15
Set Units (Setting units of measure) .......................................................................................18
Set New Recipe (using a Smart Funnel and G92T DBC or MHG Grinder) ..............................19
Set Brew Volumes ............................................................................................................19
Set By-Pass Percentages .................................................................................................20
Set Pulse Brew Times ......................................................................................................20
Set Drip Times .................................................................................................................20
Set New Recipe (using a Recipe Card) ............................................................18
Set New Recipe (no Smart Funnel nor G9-2T DBC Grinder) ................................................19
Review Recipes/Modify Recipes/Set up No Name Coffee ...................................................20
Set Brew Volumes ............................................................................................................24
Set Bypass Percentages ...................................................................................................25
Set Pulse Brew Times ......................................................................................................26
Easy Pulse.................................................................................................................28
Enter Times ...............................................................................................................29
Set Preinfusion Times ......................................................................................................30
Set Drip Times .................................................................................................................31
Assign Recipes......................................................................................................................32
Enable Ads ............................................................................................................................32
Set Temp (Brewing Temperature) ..........................................................................................33
Set Ready (Ready Temperature) ............................................................................................33
Refill (Adjust Sensitivity) .......................................................................................................33
Spray Oz/M (Read sprayhead flow rate) ................................................................................34
Bypass Oz/M (Read bypass flow rate) ...................................................................................34
Calibrate Flow .......................................................................................................................34
Calibrate Sprayhead Flow .................................................................................................34
Calibrate Bypass Flow ......................................................................................................35
Brew Counters (View/Reset)..................................................................................................36
Funnel Detect ........................................................................................................................36
Service Tools.........................................................................................................................37
Test Outputs (Components) .............................................................................................37
Test Switches ...................................................................................................................38
Test Frequency ................................................................................................................38
Factory Defaults (Reset) .......................................................................................................39
Troubleshooting ........................................................................................................................40
Schematic (Wiring Diagram) .....................................................................................................51
Page 3
35879.1 071405
Page 4
ELECTRICAL REQUIREMENTS (Models with power cord)
WARNING - The brewer must be disconnected from the power source until specified in Initial Set-Up.
Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements.
L2 RED
L2 RED
L2
WHITE
NEUTRAL
L1 BLACK
GREEN
WHITE
NEUTRAL
L1 BLACK
GREEN
N
WHITE
L1
NEUTRAL
L1 BLACK
G
GREEN
WHITE
NEUTRAL
L1 BLACK
GREEN
N
L1
G
120 volt ac single phase,
60 Hz models
120/208 and 120/240 volt ac
single phase, 60 Hz models
Note: This electrical service consists
of 2 current carrying conductors
(Neutral and L1) and a separate
conductor for earth ground.
Note: This electrical service consists
of 3 current carrying conductors
(Neutral, L1 and L2) and a separate
conductor for earth ground.
ELECTRICAL HOOK-UP
WARNING – If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service
personel with a special cord available from the manufacturer or its authorized service personel in order to
avoid a hazard. Improper electrical installation will damage electronic components. Damage caused by
incorrect electrical connections is not covered by warranty.
1. An electrician must provide electrical service.
2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.
NOTE - The brewer is shipped without a plug on the power cord. Qualified service personnel must select
and install the proper UL listed grounding type attachment plug specified on the rear of the brewer.
3. Install the specified plug on the attached power cord.
4. Remove the front panel beneath the sprayheads to gain access to the terminal block.
5. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding.
6. If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing has been hooked up, the brewer is ready for Initial Set-Up.
WARNING – Electrical connections must be made as specified above. Failure to follow these instructions can
result in personal injury, property or equipment damage.
Page 5
35879.1 071405
ELECTRICAL REQUIREMENTS (Models without power cord)
WARNING - The brewer must be disconnected from the power source until specified in Initial Set-Up.
Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements.
7()4%
L1 BLACK
.%542!,
200 or
230V
,",!#+
,2%$
L2 RED
GREEN
,",5%
GREEN
'2%%.
'2%%.
200 and 230 volt ac
single phase, 60 Hz models
120/208 and 120/240 volt ac
three phase, 50 Hz models
Note: This electrical service
consists of 2 current carrying
conductors (L1 and L2) and a
separate conductor for earth
ground.
Note: This electrical service
consists of 4 current carrying
conductors (Neutral, L1, L2
and L3) and a separate conductor for earth ground.
SYSTEM
VOLTAGE
208
240
V1
208
240
V2
120
120
L1, L2, L3, are the 3 phases
V1 = Phase to phase voltage, between any 2 phases.
V2 = Phase to neutral voltage, L1 to neutral must be 120V.
CAUTION: Do not connect L1 to a circuit operating at
more than 150 volts to ground.
ELECTRICAL HOOK-UP
CAUTION – Improper electrical installation will damage electronic components. Damage caused by incorrect
electrical connections is not covered by warranty.
1. An electrician must provide electrical service as 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 to gain access to the terminal block.
4. Feed the cord through the strain relief and connect it to the terminal block.
5. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding. Replace the front panel.
6. If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing
has been hooked up, the brewer is ready for Initial Set-Up.
WARNING – Electrical connections must be made as specified above. Failure to follow these instructions can
result in personal injury, property or equipment damage.
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35879.1 071405
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 3⁄8" flare
or female quick connect.
NOTE – Bunn-O-Matic recommends 3⁄8" copper tubing for all installations from the 1⁄2" water supply line. A tight coil of
copper tubing in the water line will facilitate moving the brewer to clean the counter top. Bunn-O-Matic does not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type
of device may restrict water 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.
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35879.1 071405
OPERATING CONTROLS
h
e
d
c
g
f
a
b
P2725
OPERATING CONTROLS
(a) BATCH SELECTOR SWITCHES
Pressing the switch corresponding to the Small, Medium, or Large batch selects the amount of coffee to
be brewed. Pressing a different switch after a brew cycle has been initiated does not change the brew batch in
progress. Light indicates the selected batch to brew.
(b) ON/OFF SWITCH
Pressing the ON/OFF switch alternately turns the brewing side on and off. Pressing this switch during the
brew cycle will interrupt the brew cycle, stopping the flow of water. Pressing this switch during the programming
of the brewer will exit the setup and return to the main screen.
(c) BREW SWITCH
Momentarily pressing and releasing this switch begins a brew cycle.
(d) ® SWITCH
Pressing and holding the ® switch allows entry to the programming menus. Pressing and releasing the
switch steps through each function screen during programming.
(e) FUNCTION SCREEN
This is the display which shows the various functions of the brewer and allows the programming to be accomplished.
(f) FUNCTION SCREEN SWITCHES
These are the hidden switches which are used to program the brewer.
(g) FUNNEL SENSING COILS
These are used to "receive" information from the Smart Funnel handle (coffee name and batch size), and also
from RECIPE CARDS.
(h) SCROLL BACKWARDS
The upper left corner of the B in BUNN can be used to scroll backwards through the function list.
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35879.1 071405
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 the brew station.
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 20 mins for the water in the tank to heat to the proper temperature on 120V/208V machines. (Wait approximately 45 mins on 120V machines). 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. Insert a BUNN filter into the Smart Funnel.
2. If a grinder is not used to obtain the coffee grounds, pour the proper amount of fresh coffee grounds into
the funnel and level by gently shaking. Slide the funnel into the funnel rails and select batch size. Proceed to
step 5.
3. If a G9-2T DBC or MHG grinder is used with a compatible Smart Funnel, select the desired batch size on the
grinder. Grind the selected amount of fresh coffee into funnel and level grounds by gently shaking. It is not
necessary to select a size on the brewer.
4. Slide the funnel into the funnel rails. The brewer will read the size ground through the chip in the funnel
handle and will automatically select the correct size to brew.
5. Place an empty server under the funnel.
6 The ON/OFF switch must be ON (indicator lit). Momentarily press and release the BREW switch. If the brewer
has the funnel lock option and if it is activated, once a brew cycle has been started the funnel is locked in place.
There may be certain situations in which the brew cycle will not begin when BREW switch is pressed:
a) ON/OFF must be ON (indicator lit).
b) BREW TEMPERATURE TOO LOW - wait until heated or cancel BREW LOCKOUT option.
c) FUNNEL NOT IN PLACE (or using a standard brew funnel) - cancel FUNNEL DETECT.
d) CHECK FUNNEL - remove funnel, empty previously brewed grounds and grind a new batch into the funnel.
7. If none of the above messages are displayed, the display will read NOW BREWING and the time remaining
in the brew cycle.
8. Following the BREW will be a countdown DRIPPING time which shows the time remaining until the funnel
lock will release. Discard the grounds and filter only after visible dripping stops.
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35879.1 071405
CLEANING
1. The use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all
surfaces on Bunn-O-Matic equipment. Do NOT clean this equipment with a water jet device.
2. Check and clean each sprayhead. The sprayhead holes must always remain open.
NOTE: Any buildup on the sprayhead and fitting may restrict water flow, and impact your coffee brewing. For
consistently great coffee, clean sprayhead and fittings weekly with sprayhead cleaning tool (#38227.0000).
Upon visual inspection it may appear that light passes through all holes in the sprayhead plate, but a thin
film of residue can pass light and still impede water flow.
3. Insert the long end of sprayhead cleaning tool into the sprayhead fitting, and rotate several times to remove
any mineral deposits from the fitting.
4. Insert the short end of sprayhead cleaning tool into the bypass fitting, and rotate several times to remove
any mineral deposits from the fitting.
5. Remove sprayhead from brewer. Disassemble by removing the seal.
6. Use the pointed end of sprayhead cleaning tool to remove any mineral deposits from the sprayhead holes.
7. Reassemble sprayhead and reattach. Sprayhead only needs to be hand tightened.
See page 34 of instruction manual for calibration routine to verify sprayhead flow rate matches programmed
flow rate. Machine may need to be re-calibrated due to lime build up. If machine is cleaned and build up
removed, machine must be re-calibrated to achieve desired volumes.
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35879.1 071405
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 coil 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.
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 filter
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.
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35879.1 071405
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
1
P2605
3
4
5
1. ® symbol (upper right of the BUNN logo)
This is used to access the programming mode and is also used to scroll forward through the function list.
2. Upper left corner of the "B" in the BUNN logo
This is used to scroll backwards through the function list.
3. "Digital" (lower left under the display)
This is used to select options that appear on the display during programming.
4. "Brewer" (center under the display)
This is used to select options that appear on the display during programming.
5. "Control" (lower right under the display)
This is used to select options that appear on the display during programming.
Page 12
35879.1 071405
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 the ON/OFF switch 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, CALIBRATE FLOW and testing the brew and bypass valves in SERVICE TOOLS/TEST
OUTPUTS.
MAIN SCREEN
PROGRAM FUNCTIONS - LEVEL 1
BREW LOCKOUT
READY TO BREW
WATER TEMP: 205°
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:
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.
DISABLE
ENABLE
PROGRAM
PROGRAMMING
SWITCH
BREW LOCKOUT?
NO
DONE
YES
Press here Press here
for DONE
for NO
Press here
for YES
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.
P2424
Page 13
35879.1 071405
PROGRAMMING THE BREWER (cont.)
PROGRAM FUNCTIONS - LEVEL 2
METHOD 2:
Using a RECIPE CARD to enter all of the brew settings at one time:
If using a coffee name not in the grinder's memory,
the customer can obtain a RECIPE CARD from the
factory with all the information needed to set up that
particular coffee flavor. This includes the COFFEE
NAME, BREW VOLUMES, BYPASS PERCENTAGES,
PULSE BREW TIMES, PREINFUSION TIMES, and
DRIP-OUT TIMES.
There are three methods of programming the
various brewing parameters of the Single TF DBC with
Smart Funnel Brewer.
METHOD 1:
Using a Smart Funnel and a G9-2T DBC or MHG
Grinder:
Certain coffee NAMES are stored in the G9-2T DBC
or MHG's memory. When a particular name of coffee is
ground into the Smart Funnel, that name and the batch
size selected are transferred from the grinder to the
programming chip located in the funnel's handle. The
funnel is then inserted into the brewer's 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 3:
Not using a Smart Funnel and/or a G9-2T DBC or
MHG Grinder:
This allows the operator to enter ONE set of brewing
parameters for each side, in the event a Smart Funnel
and/or a G9-2T DBC or MHG is not used with the 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 PERCENTAGES, PULSE
BREW TIMES, PREINFUSION TIMES and DRIP-OUT
TIMES for the three batch sizes.
RECIPES
This diagram allows for the creating, modifying,
or viewing of recipes in the brewer.
ARE YOU CREATING OR CHANGING A RECIPE FOR A
COFFEE NAME PREVIOUSLY USED IN THIS BREWER?
DON'T
KNOW
NO
YES
HAVE YOU RECEIVED A RECIPE CARD
CONTAINING THE NEW RECIPE?
NO
YES
DOES THE GRINDER HAVE THE
NAME IN ITS MEMORY?
FOLLOW INSTRUCTIONS
ON THE RECIPE CARD
NO
YOU WILL MODIFY AN
EXISTING RECIPE
DON'T KNOW
YOU WILL ENTER
THE NO NAME
BREW SETTINGS
YES
GO TO SET NEW RECIPE
AND FOLLOW THE
INSTRUCTIONS
REFER TO NAME LIST
IN GRINDER MANUAL
GO TO REVIEW RECIPES
AND FOLLOW INSTRUCTIONS
OR
OR
CONTACT BUNN-O-MATIC
FOR ASSISTANCE
TO VIEW A LIST OF EXISTING RECIPES,
GO TO REVIEW RECIPES
AND FOLLOW THE INSTRUCTIONS
P2438
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35879.1 071405
PROGRAMMING THE BREWER (cont.)
PROGRAM FLOW DIAGRAM
LEVEL I
Press upper right hidden switch for approximately 2 seconds, until the following screen appears.
BREW LOCKOUT?
NO
DONE
YES
Returns to normal
operating mode
LEVEL II
Press upper right hidden switch for approximately 4 seconds, until “UNITS” appears on screen.
Sets unit of
measure to
Metric
UNITS
METRIC DONE
Sets unit of
measure to
English
ENG
SET NEW RECIPE?
NO
YES
INSERT FUNNEL
WITH NEW NAME
QUIT SETUP ?
YES
(A)
REVIEW RECIPES?
NO
YES
Cycles thru program
constants
(B)
NO-NAME
ASSIGN RECIPE ?
NO
YES
MODIFY
SHOW
NEXT
THAT WAS THE
LAST RECIPE
Returns to (A)
Continues to (D)
FULL
SELECT RECIPE
1/2
1/4
SET ALL
3 BATCHES
BREW OZ X.XX
(-)
DONE
(+)
5 sec delay
NO-NAME
(-)
DONE
(+)
3 BATCHES DONE?
NO
YES
Continues to (D)
Continues to (C)
Page 15
35879.1 071405
(D)
(C)
%
BYPASS
XX
FULL
DONE
(+)
NO
1/4
3 BATCHES DONE?
NO
ENABLE ADS?
EASY PULSE SETUP
1/2
(-)
YES
NO
DONE
YES
SET TEMP: 200°F
(-)
YES
DONE
(+)
SET READY 195°F
(-)
DONE
(+)
SET PULSE BREW
0 REFILL
(-)
DONE
155
(+)
SPRY OZ/M XX.X
(-)
DONE
(+)
DRIP TIME X.XX
(-)
DONE
(+)
BYPAS OZ/M XX.X
(-)
DONE
(+)
3 BATCHES DONE?
NO
YES
Continues to
(E)
Page 16
PROGRAMMING THE BREWER (cont.)
PROGRAM FLOW DIAGRAM (Cont.)
SPRAY HEAD CAL?
NO
YES
BREW VALVE
ON
NEXT
OFF
BYPASS CAL?
NO
YES
BYPASS
ON
(E)
CALIBRATE FLOW?
NO
YES
QUIT
YES
YES
FUNNEL LOCK
ON
BREW COUNTERS?
NO
YES
CALIBRATE BYPASS
PRESS BREW
OFF
CONTAINER RDY?
CONTAINER RDY?
QUIT
NEXT
NEXT
OFF
CALIBRATE SPRAY
START
PRESS BREW START
REFILL VALVE
ON
NEXT
OFF
FUNNEL DETECT
NO
DONE
YES
TANK HEATERS
COUNT
0
NEXT
RESET
TEST OUTPUTS?
NO
ON
NEXT
OFF
YES
SERVICE TOOLS
NO
HEATER CONTACTOR
YES
COUNT
0
TEST SWITCHES?
NEXT
NO
ON
NEXT
OFF
YES
SEL BREWER TYPE?
NO
YES
TEST FREQUENCY?
NO
YES
ThermoF SoftHeat
DONE
FACTORY DEFAULTS
NO
YES
FINISHED, returns
to main screen
Page 17
35879.1 071405
PROGRAMMING THE BREWER (cont.)
UNITS (SETTING UNITS OF MEASURE)
This function allows the units of measure to be
set in English or Metric readings for all screens. The
program is defaulted to English.
WARNING: Changing the unit of measure will erase
all coffee recipes stored in memory. All preinfusion, pulse times, etc will also be erased. If using
this option after information has been stored, it is
important to have this information stored elsewhere
so that the machine can be reprogrammed.
Procedure for modifying units of measure:
1. Press and hold upper right hidden switch until the
display reads UNITS. Release switch. Press and
release METRIC or ENG to make a selection.
2. Press DONE to proceed. The display should now
read CHANGING UNITS!! WILL ERASE!! ... ALL
PREVIOUSLY STORED RECIPES AND ALL SETUP
INFO WILL BE LOST ... ARE YOU SURE?.
3. Press YES to begin the change. While the change
is in process, the display will read RESTORING
DEFAULTS and a count down will begin.
4. When the count down reaches 0 the display will
read SET NEW RECIPE?. The units have been
reset.
5. Press and release either of the ON/OFF switches
located on the front switch panel to exit the UNITS
function and return to the MAIN SCREEN.
UNITS
METRIC DONE ENG
SELECTS METRIC
AS THE
UNIT OF MEASURE
CHANGING UNITS
WILL!! ERASE!!
SELECTS ENGLISH
AS THE
UNIT OF MEASURE
ALL PREVIOUSLY
STORED RECIPES
AND ALL SETUP
INFO WIL BE LOST!
ARE YOU SURE?
YES
NO
REPLACE
EXIT
Page 18
P3260
35879.1 071405
PROGRAMMING THE BREWER (cont.)
SET NEW RECIPE
Using a Smart Funnel and a G9-2T DBC or MHG
Grinder:
This function allows the operator to set BREW
VOLUMES, BYPASS PERCENTAGES, PULSE BREW
TIMES and DRIP-OUT TIMES for each coffee name
preset in the grinder's memory.
Certain coffee NAMES are stored in the grinder'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 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 allows the operator to set
the BREW VOLUMES, BYPASS PERCENTAGES, PULSE
BREW TIMES and DRIP-OUT TIMES for that particular
coffee NAME. It also allows the operator to set other
brewing parameters, such as BREW TEMPERATURE,
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 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 GRIND switch. When the grinder stops
grinding, remove the funnel.
3. On the brewer, press and hold the upper right hidden switch until the display reads UNITS. Release
the switch, then press and release the switch again
until the display reads SET NEW RECIPIE.
4. Press and release YES. The display should read
INSERT FUNNEL WITH NEW NAME, then QUIT
SETUP? These three displays will repeatedly
cycle.
5. Insert the funnel into the rails 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 BREW OZ. SETTING
OR ADJUSTING for description).
Page 19
PROGRAMMING THE BREWER (cont.)
SET NEW RECIPES (cont.)
8. Using (-) and (+), set the amount of brew water, in
ounces, to be dispensed for that particular batch
size.
9. When 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 % BYPASS
for description).
% BYPASS XX.X
(-)
DONE
(+)
3 BATCHES DONE?
NO
YES
with the setup instructions for SETTING PULSE
BREW - ENTER TIMES. SET DRIP TIME. (Refer
to SET DRIP TIME for description).
DRIP TIME X:XX
(-)
DONE
(+)
3 BATCHES DONE?
NO
YES
(COFFEE NAME)
SETUP COMPLETE
P2418
18. The display should now read DRIP TIME, along
with either the word OFF, or a time will be showing.
A batch light should also be blinking.
19. Using (-) and (+), set the amount of time from
when the brew spray ends to when the funnel is
emptied of hot liquid for that batch size.
NOTE: Set to OFF to prevent funnel locks from engaging
(to disable this function), for a particular batch size.
To set to OFF, continue to press and release (-) until
OFF appears on the screen.
SET PULSE BREW?
NO
YES
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 SET PULSE BREW for description).
16.To SET PULSE BREW, if setting pulse brew using
EASY PULSE (brewing into a funnel) press YES
and proceed with the setup instructions for SETTING PULSE BREW - EASY PULSE.
17. If setting pulse brew by ENTER TIMES (entering
known times) press NO. The display should read
ENTER TIMES. Press and release YES and proceed
20. When finished, press another batch size and repeat
step 19 until all three sizes are set.
21. When finished setting all batch sizes press DONE.
The display should read 3 BATCHES DONE?.
22. If the three batch sizes are not correct, press NO to
return to the DRIP TIME setup screen and repeat
steps 19 through 21.
23. If the three batch sizes are correct, press YES.
The screen should show the name of the coffee
being programmed (modified) along with SETUP
COMPLETE.
24. After a 5 second delay, the display will advance to
the next coffee name in the brewer's memory. If
no other coffee names are present, the display will
read THAT WAS THE LAST RECIPE, and return to
the REVIEW RECIPES screen.
Page 20
35879.1 071405
PROGRAMMING THE BREWER (cont.)
Page 21
PROGRAMMING THE BREWER (cont.)
SET NEW RECIPE:
If not using a Smart Funnel (with a sensor coil) and/or
a G9-2T DBC or MHG Grinder, the brewer will function
as a standard Bunn Single TF DBC Brewer:
It is possible to operate the brewer without using
a Smart Funnel and/or a G9-2T DBC or MHG Grinder.
If a standard funnel, or if a non-DBC grinder is used
the brewer will automatically select a NO NAME coffee
name when the BREW switch is pressed. This means
that no name was read from the funnel's handle.
There is one NO NAME coffee program that can
be set in the brewer. It is referred to as NO NAME.
The instructions for programming the NO NAME
settings are on the following pages. The same steps
are followed for setting the recipe as those that are
used to MODIFY A RECIPE, beginning on page 21.
Note that when the display reads NO NAME, that
is when MODIFY should be pressed in order to set the
parameters for the NO NAME coffee.
REVIEW RECIPES?
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
NO-NAME
MODIFYSHOWNEXT
BREW OZ. XX.X
(-)
DONE
(+)
(COFFEE NAME)
MODIFYSHOWNEXT
BREW OZ. XX.X
(-)
DONE
(+)
P2441
NOTE: Before beginning setup, insert a funnel into the
funnel rails, and place a ThermoFresh Server beneath
the brew funnel.
Page 22
35879.1 071405
PROGRAMMING THE BREWER (cont.)
REVIEW RECIPES/MODIFY RECIPES/SET UP NO
NAME COFFEE NAMES:
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 and DRIP-OUT TIMES for a
particular coffee name programmed into the brewer.
Finally, this function is used to set up the NO NAME
coffee BREW VOLUMES, BYPASS PERCENTAGES,
PULSE BREW TIMES and DRIP-OUT TIMES.
Procedure for reviewing recipes:
1. Press and hold the ® pad until the display reads
1. Press and hold the upper right hidden switch ®
until the display reads UNITS. Release the switch,
then press and release switch until the display
reads REVIEW RECIPES.
P2442
Page 23
2. Press YES to proceed. The display should now
read NO-NAME, along with MODIFY, SHOW and
NEXT.
3. Press and release SHOW. The screen will scroll
through all the brew settings for that particular
coffee 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 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 the ON/OFF switch located on the front
switch panel to exit the programming mode and
return to the MAIN SCREEN.
PROGRAMMING THE BREWER (cont.)
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 upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch again until the display
reads REVIEW RECIPES.
2. Press YES to proceed. The display should now
read NO NAME, 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.
5. Using (-) and (+), set the amount of brew water,
in ounces, to be dispensed over the grounds for
that particular batch size.
6. When finished, press another batch size and repeat
step 5 for that size for each batch size to be modified. Continue setting all batch sizes.
7. When finished setting all batch sizes, press and
release DONE. The display should read 3 BATCH
SIZES DONE?
8. If the three batch sizes are not correct, press and
release NO to return to the BREW OUNCES setup
screen and repeat steps 5, 6 and 7.
9. If the three batch sizes are correct, press YES.
This will advance to the % BYPASS function. Another alternative is to press the ON/OFF switch to
exit the BREW OZ setup and return to the MAIN
SCREEN.
REVIEW RECIPES?
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
NO-NAME
MODIFYSHOWNEXT
ADVANCES TO ALL OTHER
COFFEE NAMES PROGRAMMED
IN THE BREWER'S MEMORY
BREW OZ. XX.X
(-)
DONE
(+)
(COFFEE NAME)
MODIFYSHOWNEXT
3 BATCHES DONE?
NO
YES
WHEN THE LAST COFFEE NAME
IN THE BREWER'S MEMORY IS
DISPLAYED, PRESSING NEXT
WILL EXIT AND THE DISPLAY
WILL THEN READ:
% BYPASS XX.X
(-)
DONE
(+)
THAT WAS THE
LAST RECIPE
SEE MODIFYING
BYPASS PERCENTAGES
ON THE FOLLOWING PAGE
OR PRESS AND RELEASE
ON/OFF SWITCH TO EXIT THE
BREW OZ: SETUP AND RETURN
TO THE MAIN SCREEN
P2443
Page 24
35879.1 071405
PROGRAMMING THE BREWER (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 upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
REVIEW RECIPES.
2. Press YES to proceed. The display should now
read NO NAME, 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 the ON/OFF sswitch to exit the %
BYPASS setup and return to the MAIN SCREEN.
REVIEW RECIPES?
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
NO-NAME
MODIFYSHOWNEXT
ADVANCES TO ALL OTHER
COFFEE NAMES PROGRAMMED
IN THE BREWER'S MEMORY
BREW OZ. XX.X
(-)
DONE
(+)
(COFFEE NAME)
MODIFYSHOWNEXT
3 BATCHES DONE?
NO
YES
WHEN THE LAST COFFEE NAME
IN THE BREWER'S MEMORY IS
DISPLAYED, PRESSING NEXT
WILL EXIT AND THE DISPLAY
WILL THEN READ:
% BYPASS XX.X
(-)
DONE
(+)
THAT WAS THE
LAST RECIPE
3 BATCHES DONE?
NO
YES
SET PULSE BREW?
NO
YES
SEE MODIFYING
PULSE BREW ON
THE FOLLOWING PAGE
OR PRESS AND RELEASE
ON/OFF PAD TO EXIT THE
% BYPASS SETUP AND
RETURN TO THE MAIN SCREEN
Page 25
P2444
35879.1 071405
PROGRAMMING THE BREWER (cont.)
SET PULSE BREW:
This function allows the operator to program the
brewer to "pulse” the sprayhead flow on and off continually 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.
ONTIME
ONTIME
INITIAL SPRAY
OFFTIME
OFFTIME
OFFTIME
ONTIME ALTERNATES UNTIL
BREW CYCLE IS
COMPLETED
INITIAL SPRAY
P2293
a) 1st ON TIME - This time is the duration from when
the BREW switch is pressed to when the desired
water level in the funnel is reached. (Soaking the
grounds)
b) OFF-TIME - This time is the duration from when
the water in the funnel reaches the desired ON
TIME level to when it drains out of the funnel to a
desired lower level.
c) LAST ON-TIME- This time is the duration from when
the water in the funnel drains down to the lower
level to when it fills the funnel to a desired higher
level. (Soaking the grounds).
These three times can be set two different ways.
The first is accomplished by utilizing the EASY PULSE
screen and following the subsequent steps under that
function.
The other allows the actual times to be entered
for each of the settings. This is done by utilizing the
ENTER TIMES screen and following the subsequent
steps under that function.
Either of these methods can be used to set the
pulse brew for each batch.
Modifying pulse brew:
Range: 1st on time - off to 4 minutes
Off time - off to 4 minutes
Last on time - off to 4 minutes
NOTE: If the brewer is already in the SET PULSE BREW
screen, it is not necessary to follow steps 1 through 8
in this section, but proceed directly to step 9.
1. Press and hold the upper right hidden switch (®)
until the display reads UNITS. Release the switch,
then press and release the switch until the display
reads REVIEW RECIPES.
2. Press YES to proceed. The display should now
read NO NAME, 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 YES. The display should now
read EASY PULSE SETUP.
10. If setting pulse brew using EASY PULSE (brewing
into a funnel) press YES and proceed with the setup
instructions for SETTING PULSE BREW - EASY
PULSE SETUP.
11. If setting pulse brew by ENTER TIMES (entering
known times) press NO. The display should read
ENTER TIMES. Press and release YES and proceed
with the setup instructions for SETTING PULSE
BREW - ENTER TIMES.
Page 26
35879.1 071405
PROGRAMMING THE BREWER (cont.)
SET PULSE BREW (cont.)
P2445-1
Page 27
35879.1 071405
PROGRAMMING THE BREWER (cont.)
SET PULSE BREW - EASY PULSE SETUP
NOTE: The procedure to enter the PULSE BREW
function must be performed prior to following the
steps listed below.
1. The display should read BREW TIME: X.XX and
a batch size indicator will be flashing.
2. Using (-) and (+), set the desired brew time for
the selected batch size.
3. When finished, select another batch size to be set
by pressing the switch next to the indicator light.
Repeat step 2 for each batch size to be set.
4. When finished setting all batch sizes, press done.
The display should read 3 BATCHES DONE ?.
5. If the three batch sizes are not correct, press and
release NO to return to BREW TIME setup screen
and repeat steps 2 thru 4. If they are correct, press
YES. This will display the 1st, OFF, and LAST times
for 5 seconds, then advance to the DRIP TIME
setup. (See DRIP TIME SET UP)
SET PULSE BREW?
NO
YES
EASY PULSE SETUP
NO
YES
BREW TIME XX.X
(-)
DONE
(+)
ENTER TIMES ?
NO
YES
See SET PULSE BREWENTER TIMES
3 BATCHES DONE?
NO
YES
1st
XX.X
OFF
XX.X
LAST
XX.X
5 SEC. DELAY
DRIP TIME XX.X
(-)
DONE
(+)
3 BATCHES DONE?
NO
YES
COFFEE NAME
SETUP COMPLETE
P3507
Page 28
35879.1 071405
PROGRAMMING THE BREWER (cont.)
SET PULSE BREW - ENTER TIMES
NOTE: The procedure to enter the PULSE BREW
function must be performed prior to following the
steps listed below.
1. Press and release YES. The display should now
read EASY PULSE SETUP.
2. Press and release NO. The display will read ENTER
TIMES?
3. Press YES to proceed. The display should now
read 1st ON TIME X:XX.
4. Using (-) and (+) set the amount of time the flow
of water into the funnel will be on.
5. When finished, press DONE. The display will now
read OFF TIMES: X:XX.
6. Using (-) and (+) set the amount of time the flow
of water into the funnel will be off.
7. When finished, press DONE. The display will now
read LAST ON: X.XX
8. Using (-) and (+) set the amount of time the water
will be on to complete the brew.
9. When finished, press DONE. The display will show
the three times just entered for that batch size. After
a 5 second delay, the display will read 3 BATCHES
DONE?
10. If other batch sizes need to be modified, press
NO.
12. Press a different batch size and repeat steps 3
through 7. Repeat until all the desired batch sizes
are set.
13. When finished press YES in 3 BATCHES DONE?.
The display will then read DRIP TIME.
14. Press and release the ON/OFF switch located on
the front switch panel to exit the SET PULSE BREW
function and return to the MAIN SCREEN.
NOTE: Pressing the upper right hidden button before
reaching the final setting screen exits the setup and
retains the old values.
SET PULSE BREW?
NO
YES
EASY PULSE SETUP
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
ENTER TIMES?
NO
YES
1st ON TIME X:XX
(-)
DONE
(+)
OFF TIMES: X:XX
(-)
DONE
(+)
LAST ON: X.XX
(-)
DONE
(+)
1st
XX.X
OFF
XX.X
LAST
XX.X
5 SEC. DELAY
3 BATCHES DONE?
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
P3265
Page 29
35879.1 071405
PROGRAMMING THE BREWER (cont.)
SET PREINFUSION:
This function sets the brewer to turn the sprayhead
flow on for a preset time (1st ON TIME) followed by a
preset spray pause (OFF TIMES) and then turn the spray
on continuously until the brew volume is completed.
This is a special case of pulse brew. It is not possible to set a batch size to have both pulse brew and
preinfusion. One or the other (or neither) must be
chosen. However, it is possible to set one batch size
to pulse brew and the other two to preinfusion or vice
versa.
NOTE: Pressing the upper right hidden button before
reaching the final setting screen exits the setup and
retains the old values.
NOTE: The procedure to enter the PULSE BREW
function must be performed prior to following the
steps listed below.
1. Press and release YES. The display should now
read EASY PULSE SETUP.
2. Press and release NO. The display will read ENTER
TIMES?
3. Press YES to proceed. The display should now
read 1st ON TIME X:XX.
4. Using (-) and (+) set the amount of time the flow
of water into the funnel will be on.
5. When finished, press DONE. The display will now
read OFF TIMES: X:XX.
6. Using (-) and (+) set the amount of time the flow
of water into the funnel will be off.
7. When finished, press DONE. The display will now
read LAST ON: PreI
8. If the display shows a time use (-) and (+) to set
it to read PreI. (PreI is an abreviation for preinfusion)
9. When finished, press DONE. The display will show
the two settings and PreI just entered for that batch
size. After a 5 second delay, the display will read
3 BATCHES DONE?
10. If other batch sizes need to be modified, press
NO.
12. Press a different batch size pad and repeat steps 3
through 7. Repeat until all the desired batch sizes
are set.
13. When finished press YES in 3 BATCHES DONE?.
The display will then read DRIP TIME.
14. Press and release the ON/OFF switche located on
the front switch panel to exit the SET PULSE BREW
function and return to the MAIN SCREEN.
SET PULSE BREW?
NO
YES
EASY PULSE SETUP
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
ENTER TIMES?
NO
YES
1st ON TIME X:XX
(-)
DONE
(+)
OFF TIMES: X:XX
(-)
DONE
(+)
LAST ON: PreI
(-)
DONE
(+)
1st
XX.X
OFF LAST
XX.X
PreI
5 SEC. DELAY
3 BATCHES DONE?
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
P3265-1
Page 30
35879.1 071405
PROGRAMMING THE BREWER (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
9 in this section, but proceed directly to step 10.
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and hold the upper right hidden switch until
the display reads REVIEW RECIPES.
2. Press YES to proceed. The display should now
read NO NAME, 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
DRIP TIME, along with either the word OFF, or a
time will be showing. A batch light should also be
blinking.
10. Using the (-) and (+), set the amount of time from
when the brew solenoid shuts off to when drip-out
occurs for that batch size.
NOTE: Set to OFF to prevent funnel locks from engaging (to disable this function), for a particular batch
size. To set to OFF, press and release (-) until OFF is
displayed.
Page 31
P2447
PROGRAMMING THE BREWER (cont.)
ASSIGN RECIPES
This function allows for assigning a coffee name
other than NO-NAME to the BREW switch.
Procedure to assign recipes:
1. Press and hold the upper right hidden switch until
. Release the switch, then
Procedure to Enable/Disable Ads:
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
ENABLE ADS. The YES or NO will be flashing to
indicate the current selection.
2. Press and release the NO switch to disable this
function (no ads will be displayed on the screen),
or;
3. Press and release the YES switch 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 the ON/OFF switch
located on the front switch panel to exit the ENABLE
ADS function and return to the MAIN SCREEN.
ENABLE ADS?
This function allows the operator to choose whether
or not to display the advertising message that was entered into the brewer with an AD CARD. This message
will be displayed when the brewer is not in use.
P2721
Page 32
PROGRAMMING THE BREWER (cont.)
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 the ON/OFF switch located
on the front switch panel to exit the SET READY
function and return to the MAIN SCREEN.
SET TEMP (cont,)
SET TEMP: XXX°
(-)
DONE
(+)
P2721
Procedure to set brew temperature:
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
SET TEMP.
2. To adjust the brew temperature, press (-) to decrease or (+) to increase the brew temperature.
3. When finished, press and release DONE to save
the new setting, exit the SET TEMP function and
advance to the next function screen, SET READY.
Another alternative is to press the ON/OFF switch
located on the front switch panel to exit the SET
TEMP function and return to the MAIN SCREEN.
SET READY - Range: 185˚F (85˚C) to 203˚F (95˚C)
This function allows the operator to set the minimum temperature allowable to start a brew cycle. The
range can be from 185˚F (85˚C) to within 2˚F (-1.7°C)
of the SET TEMP. The water must be at the SET READY
temperature or higher for the display to indicate READY
TO BREW. If brew lockout is enabled, the brewing process will not start below this READY temperature.
NOTE: The upper limit is the water temperature control
setting minus 2˚F (-1.7°C).
SET READY: XXX°
(-)
DONE
(+)
P2721
Procedure to set ready temperature:
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
SET READY.
2. To adjust the ready temperature, press the (-)
switch to decrease, or (+) to increase the ready
temperature.
REFILL - Range: 20 to 230
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.
XXX REFILL -> XXX
(-)
DONE
(+)
P2721
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 upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
REFILL and shows a number on both sides of the
word.
2. To adjust the threshold setting, press (-) to decrease, or (+) to increase the setting.
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.
3. When finished, press and release DONE. This
saves the new setting and advances to the next
function screen, SPRAY OZ/M. Another alternative
is to press the ON/OFF switch located on the front
switch panel to exit REFILL and return to the MAIN
SCREEN.
SPRAY OZ/M
This function allows the operator to view or to enter
the actual flow rate coming out of the sprayhead. 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)
Page 33
35879.1 071405
PROGRAMMING THE BREWER (cont.)
3. When finished, press and release DONE. This saves
the new setting and advances to the next function
screen, CALIBRATE FLOW. Another alternative is
to press the ON/OFF switch located on the front
switch panel to exit the BYPASS OZ/M function
and return to the MAIN SCREEN.
SPRAY OZ/M (cont.)
SPRAY OZ/M: XXX
(-)
DONE
(+)
P2721
Procedure to adjust the flow rate setting:
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
SPRAY OZ/M. The number represents what the
brewer thinks is the flow rate of the sprayhead
valve in ounces per minute.
2. If the actual flow rate of the sprayhead valve is
known, but is different than the number on the
display, use the (-) and (+) to enter the correct
flow rate in ounces per minute.
3. When finished, press and release DONE. This saves
the new setting and advances to the next function
screen, BYPASS OZ/M. Another alternative is to
press the ON/OFF switch located on the switch
panel to exit SPRAY OZ/M function and return to
the MAIN SCREEN.
BYPASS OZ/M
This function allows the operator to view or to enter
the actual flow rate coming out of the bypass nozzle.
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.
BYPAS OZ/M: XXX
(-)
DONE
(+)
P2721
Procedure to adjust the flow rate setting:
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
BYPAS 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 (+) to enter the correct flow rate
in ounces per minute.
CALIBRATE FLOW
This function allows the operator to enter the actual
flow rate of the sprayhead and the bypass 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, beneath
the funnel on the brewer.
2. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
CALIBRATE FLOW.
3. Press and release YES to advance to the SPRAYHEAD 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 under
the funnel, press YES. The display should read
CALIBRATE SPRAY .. PRESS BREW TO START.
5. Press and release the BREW switch. The display
should read CALIBRATE SPRAY .. 60 SEC TO FINISH. The 60 second timer on the display will count
down to zero. When the counter reaches zero, the
display will change to ENTER OZ., along with a
number measured in ounces per minute.
6. Measure the amount of water in the container
and using the (-) or (+), adjust the amount on the
display to match the amount in the container. Then
press DONE.
7. The display should now read NEW SPRAY 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
the ON/OFF switch located on the front switch
panel to exit the CALIBRATE FLOW function and
return to the MAIN SCREEN.
Page 34
35879.1 071405
PROGRAMMING THE BREWER (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.
2. Press and hold the upper right hidden switch until
the display reads UNITS.Release the switch, then
press and release switch until the display reads
CALIBRATE FLOW.
3. Press and release YES to advance to the SPRAYHEAD 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.
Page 35
PROGRAMMING THE BREWER (cont.)
CALIBRATE FLOW (cont.)
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 BYPASS 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 the ON/OFF switch located on the front
switch panel to exit the CALIBRATE FLOW function
and return to the MAIN SCREEN.
4. To advance to the other counter, press and release
NEXT. This will advance to total brews (non-resettable).
5. When finished, press NEXT until the display reads
BREW COUNTERS. Press and release NO to advance to the next function screen, or press the
ON/OFF switch located on the front switch panel
to exit the BREW COUNTERS function and return
to the MAIN SCREEN.
FUNNEL DETECT (optional)
This function allows the operator to prevent the
start of a brew cycle if a Smart Funnel is not positioned
correctly in the funnel rails.
BREW COUNTERS
This function allows the operator to track the number of brew cycles completed. There is one resettable
counter, and one life counter that is not resettable.
BREW COUNTERS?
NO
YES
EXIT TO
NEXT FUNCTION
SCREEN
XXXX
NEXT RESET
XXXX
NEXT
P2448
Procedures to view/reset the brew counters:
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
BREW COUNTERS.
2. Pressing NO in this screen will advance to the next
function. Press YES to view the first brew counter.
This number represents the brew cycles initiated
since that counter was last reset.
3. To reset the resettable counter to zero press
and release RESET when viewing that particular
counter's screen.
Procedure to set funnel detect:
1. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
FUNNEL DETECT.
2. NO or YES should be flashing to indicate the current setting.
3. 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.
4. Select NO to allow brewing without a Smart Funnel in place. This is selected when brewing with a
funnel other than a Smart Funnel (a regular brew
funnel).
5. 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
the ON/OFF switch located on the front switch
panel to exit the FUNNEL DETECT and return to
the MAIN SCREEN.
Page 36
PROGRAMMING THE BREWER (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 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).
Page 37
PROGRAMMING THE BREWER (cont.)
SERVICE TOOLS (cont.)
14. Press OFF to retract the funnel lock.
15. Press NEXT to advance to the next component to
be tested.
16. To test REFILL VALVE, press ON. If the refill valve
is functional, the sound of the valve operating will
be heard.
17. Press OFF to end testing of refill valve.
18. Press NEXT to advance to the next component to
be tested.
19. To test TANK HEATER, connect a voltmeter across
the tank heater to check for voltage.
20. Press ON. The correct voltage should be present
at the heater terminals.
21. Press OFF to end testing of the tank heater.
NOTE: The tank heater will automatically turn off if
left on too long.
22. After testing the tank heater, press NEXT to advance
to the next test.
23. The HEATER CONTACTOR is used only on certain
models. Check the machine schematic to see if the
contactor is present. Connect a voltmeter across
the tank heater and press ON to check that correct voltage is present. Press OFF and confirm the
voltage is zero.
24. Press NEXT to return to TEST OUTPUTS.
25. To exit SERVICE TOOLS, press and release the
ON/OFF switch located on the front switch panel.
This will return to the MAIN SCREEN.
Procedure to test switches:
This function allows the operator to test the operation of the individual switches on the front panel.
1. Place brew funnel into rails on the brewer.
2. Place a server beneath the brew funnel.
3. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
SERVICE TOOLS.
4. Press YES to run tests on various components
and outputs within the brewer. (Pressing NO will
exit this function and advance to the next function
screen.)
5. The display should read TEST OUTPUTS.
6. In TEST OUTPUTS screen, press NO. This advances
to TEST SWITCHES.
7. Pressing NO in this screen will advance to the
next function. Press YES in the TEST SWITCHES
screen to test the switches. The display will read
NOTHING PRESSED.
8. From this screen, press any of the switches on the
front of the brewer. 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 the upper right hidden switch located on the front switch
panel. This will exit TEST SWITCHES and return
to the MAIN SCREEN.
Procedures to test coil frequency:
1. Place brew funnel into rails of the brewer.
2. Place a server beneath the brew funnel.
3. Press and hold the upper right hidden switch until
the display reads UNITS. Release the switch, then
press and release switch until the display reads
SERVICE TOOLS.
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
the ON/OFF switch 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.
Page 38
35879.1 071405
PROGRAMMING THE BREWER (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.
Page 39
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.
•
•
•
•
•
•
•
WARNING
•
•
•
•
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.
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
OVERFLOW CUP
FULL. EMPTY CUP
NO FUNNEL
PRESENT
Possible Cause
Troubleshooting Procedures
1. 1. Overflow cup is full of water.
This could be caused by boiling;
see chart on page 32. Also could
be Refill Sensitivity adjustment; see
page 33.
Empty cup. Correct cause and
retry.
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 activated (on).
Disable the FUNNEL DETECT function.
Page 40
35879.1 071405
TROUBLESHOOTING (cont.)
Screen Displayed
BREW STOPPED!
IS SWITCH OFF?
Possible Cause
Troubleshooting Procedures
1. ON/OFF switch was pressed after
the brew cycle was started.
To resume brewing, press BREW
again. The brew cycle resumes form
the point it was interrupted.
OR
TO FINISH:
PRESS BREW
Press ON/OFF to terminate the brew
cycle.
TO CANCEL
PRESS ON/OFF
HEATING TIME
TOO LONG
1. Tank Heater failure
Service Required
2. Triac Failure
Service Required
3. Control Board/Thermistor failure
Service Required
CHECK HEATING
CIRCUIT
Page 42
35879.1 071405
TROUBLESHOOTING (cont.)
Screen Displayed
FILL TIME TOO
LONG
Possible Cause
Troubleshooting Procedures
1. Water shut off to brewer
Check water supply shut-off
2. Inlet Solenoid Valve failure
Service required
3. Control Board Failure
Service required
1. Temperature Sensor Probe wire(s)
broken or not making connection.
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.
CHECK WATER
SUPPLY
TEMP SENSOR
OUT OF RANGE
CHECK FOR BAD
CONNECTIONS
TEMP SENSOR
OUT OF RANGE
CHECK WIRE FOR
SHORTS
Page 43
35879.1 071405
TROUBLESHOOTING (cont.)
Problem
Possible Cause
Troubleshooting Procedure
Equipment will not operate.
1. No power or incorrect voltage.
Measure the voltage at the terminal
block and confirm that it matches
the voltage specified on the brewer
data plate within +/- 10%.
Brew cycle will not start.
1. No water
Check plumbing and shut-off
valves
2. ON/OFF switch
Test the ON/OFF switch. Refer to the
switch test procedures.
3. Brew switch
Test the BREW switch. Refer to the
switch test procedures.
4. Brew Valve
Test the Brew valve. Refer to Testing
Individual Components.
5. Electronic Control Board
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 44
35879.1 071405
TROUBLESHOOTING (cont.)
Problem
Possible Cause
Troubleshooting Procedure
Automatic refill will not operate or
display shows FILL TIME TOO LONG
(cont.)
3. Refill Probe or Sensitivity Setting
Check the sensitivity setting. Refer
to the Refill function. 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.
4. Refill Valve
Test the Refill valve. Refer to Testing
Individual Components.
5. Overflow Protection Switch
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.
6. Electronic Control Board
Substitute a control board known to
be in good working order.
1. Refill valve
Foreign material lodged in valve,
holding it in open state.
Water flows into tank continuously
with power removed from brewer.
Page 45
35879.1 071405
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. 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.
2. Electronic Control Board
Substitute a control board known to
be in good working order.
1. Limit Thermostat
Remove power from the brewer.
Press reset button on limit thermostat. Then check for continuity
through it.
Water will not heat or display shows
HEATING TIME TOO LONG
CAUTION - Do not eliminate or
bypass limit thermostat. Use only
replacement part #23717.0001.
2. Tank Heaters
Page 46
Remove power from the brewer.
Check for continuity through the
tank heaters.
35879.1 071405
TROUBLESHOOTING (cont.)
Problem
Possible Cause
Troubleshooting Procedures
Water will not heat or display shows
HEATING TIME TOO LONG (cont.)
3. Triac
Remove power from the brewer.
Connect a voltmeter across one of
the tank heaters. Reapply power
to the brewer and refer to Testing
Individual Components. If the full
supply voltage is measured when
the tank heater is turned on, and
zero voltage is measured with the
triac off, then the triac is good. If
half the supply voltage is measured,
the triac is defective. If very low, or
zero voltage is measured, there could
be a defective triac or a defective
control board.
4. Electronic 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.
1. Triac
Remove power from the brewer.
Connect a voltmeter across one of
the tank heaters. Reapply power
to the brewer and refer to Testing
Individual Components. If the full
supply voltage is measured when
the tank heater is turned on, and
zero voltage is measured with the
triac off, then the triac is good. If
half the supply voltage is measured,
the triac is defective. If very low, or
zero voltage is measured, there could
be a defective triac or a defective
control board.
2. Lime Buildup
Inspect the tank assembly for excessive lime deposits. Delime as
required.
Spitting or unusual steaming from
sprayhead or air vent. (Water too
hot)
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.
Page 47
35879.1 071405
TROUBLESHOOTING (cont.)
Problem
Possible Cause
Troubleshooting Procedures
Spitting or unusual steaming from
sprayhead or air vents. (Water too
hot) (cont.)
3. Electronic control board
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.
Inconsistent beverage level in
server.
1. Strainer
(A) Direction of flow arrow must be
pointing towards the brewer.
(B) Remove the strainer and check
for obstructions. Clear or replace.
2. Improper water pressure
Check operating water pressure to
the brewer. It must be between 20
and 90 psi (138 and 620 kPa).
3. Brew Valve
Test the Brew Valve. Refer to Testing
Individual Components. Turn the
valve on for 30 seconds and collect
the water dispensed from the sprayhead. Repeat the test several times
to confirm a consistent volume of
dispensed water. If not consistent,
check the valve, tubing and sprayhead for lime buildup.
4. Bypass Valve
If bypass is being used on the
inconsistent brewing recipe, test
the Bypass Valve. Refer to Testing
Individual Components. Turn the
valve on for 30 seconds and collect
the water collected from the bypass
opening. Repeat the test several
times to confirm a consistent volume
of dispensed water. If not consistent,
check the valve, tubing and bypass
opening for lime buildup.
5. Lime buildup
Inspect for lime buildup that could
block the tank, tank fittings, tubing,
valves and sprayhead.
Page 48
35879.1 071405
TROUBLESHOOTING (cont.)
Problem
Possible Cause
Troubleshooting Procedures
Consistently high or low beverage
level in server.
1. Brew Volume adjustment
Adjust the brew volume as required
to achieve the recommended volume
for each brew cycle.
Dripping from sprayhead.
1. Brew Valve
Repair or replace leaky valve.
Water overflows filter.
1. Type of paper filters
BUNN paper filters should be used
for proper extraction.
2. No sprayhead
Check sprayhead
1. Beverage left in server from previous brew
The brew cycle should be started
only with an empty server under
the funnel.
2. Brew Volume adjustment
Adjust the brew volume as required
to achieve the recommended volume
for each brew cycle.
1. Type of paper filters
BUNN paper filters should be used
for proper extraction.
2. Coffee
A sufficient quantity of fresh drip
or regular grind should be used for
proper extraction.
3. Sprayhead
B.O.M. sprayhead should be used
to properly wet the bed of ground
coffee in the funnel.
4. Funnel Loading
The BUNN paper filter should be
centered in the funnel and the bed
of ground coffee leveled by gentle
shaking.
5. Water temperature
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).
Beverage overflows server.
Weak beverage.
Page 49
35879.1 071405
TROUBLESHOOTING (cont.)
Problem
Possible Cause
Troubleshooting Procedures
Weak beverage (cont.)
6. Incorrect Recipe
Consider adjusting bypass percentage, preinfusion, or pulse brew.
Contact Bunn-O-Matic for suggestions.
Brewer is making unusual noises.
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.
Page 50
Remove and clean lime off tank
heaters.
35879.1 071405
Page 51
SCHEMATIC WIRING DIAGRAM
SINGLE TF DBC
L1
L2
BLK-14
RED-14
BLK-14
RED-14
GRN
TRIAC
LIMIT THERMOSTAT
BLK-14
BLK-14
MT2
MT 1
BLU-14
TANK HEATER
RED-14
SWITCH UNIT ASSEMBLY
REFILL
SOL
RED
BYPASS
FUNNEL SENSOR
RED
SOL
VIO
WHI/VIO
BREW
VIO
SOL
RED
WHI/GRN
GRY
WHI
CONTROL PC BOARD
TAN
YEL
BLK
PNK
BLK
WATER LEVEL
PROBE
RED
RED
N.C.
OVERFLOW
PROTECTION SWITCH
RED
BRN/WHI
BRN/BLK
TEMP PROBE
GRN
SOL
FUNNEL LOCK
Switch Unit Assembly Codes
A1
A2
B1
B2
C1
Brew
On/Off
"Hidden" Left
"Hidden" Right
Large Batch
L1
L2
L3
L4
C2
C3
D1
D2
D3
Medium Batch
Small Batch
"Digital" Left Hidden Button
"Brewer" Center Hidden Button
"Control" Right Hidden Button
LED's
Large Batch LED
Medium Batch LED
Small Batch LED
On/Off LED
230 OR 200
VOLT A.C.
SINGLE PHASE
Page 52
36883.0000A 05/04 © 2004 Bunn-O-Matic Corporation
35879.1 071405
SCHEMATIC WIRING DIAGRAM
SINGLE TF DBC
L1
N
TRIAC
LIMIT THERMOSTAT
BLK-14
BLK-14
MT2
MT 1
BLU-14
TANK HEATER
WHI-14
SWITCH UNIT ASSEMBLY
REFILL
SOL
WHI
BYPASS
FUNNEL SENSOR
WHI
SOL
VIO
WHI/VIO
BREW
VIO
SOL
WHI
WHI/GRN
GRY
WHI
CONTROL PC BOARD
TAN
YEL
BLK
PNK
BLK
WATER LEVEL
PROBE
RED
RED
N.C.
OVERFLOW
PROTECTION SWITCH
WHI
BRN/WHI
BRN/BLK
TEMP PROBE
GRN
SOL
FUNNEL LOCK
Switch Unit Assembly Codes
A1
A2
B1
B2
C1
Brew
On/Off
"Hidden" Left
"Hidden" Right
Large Batch
L1
L2
L3
L4
C2
C3
D1
D2
D3
Medium Batch
Small Batch
"Digital" Left Hidden Button
"Brewer" Center Hidden Button
"Control" Right Hidden Button
LED's
Large Batch LED
Medium Batch LED
Small Batch LED
On/Off LED
120 VOLT A.C.
2 WIRE SINGLE PHASE
60HZ
Page 53
36883.0002A 11/04 © 2004 Bunn-O-Matic Corporation
35879.1 071405
SCHEMATIC WIRING DIAGRAM
SINGLE TF DBC
L1
L2
TRIAC
LIMIT THERMOSTAT
BLK-14
BLK-14
MT2
MT 1
BLU-14
TANK HEATER
RED-14
SWITCH UNIT ASSEMBLY
REFILL
SOL
RED
BYPASS
FUNNEL SENSOR
RED
SOL
VIO
WHI/VIO
BREW
VIO
SOL
RED
WHI/GRN
GRY
WHI
CONTROL PC BOARD
TAN
YEL
BLK
PNK
BLK
WATER LEVEL
PROBE
RED
RED
N.C.
OVERFLOW
PROTECTION SWITCH
RED
BRN/WHI
BRN/BLK
TEMP PROBE
GRN
SOL
FUNNEL LOCK
Switch Unit Assembly Codes
A1
A2
B1
B2
C1
Brew
On/Off
"Hidden" Left
"Hidden" Right
Large Batch
L1
L2
L3
L4
C2
C3
D1
D2
D3
Medium Batch
Small Batch
"Digital" Left Hidden Button
"Brewer" Center Hidden Button
"Control" Right Hidden Button
LED's
Large Batch LED
Medium Batch LED
Small Batch LED
On/Off LED
200,208 or 240 VOLT A.C.
2 WIRE SINGLE PHASE
50/60HZ
Page 54
36883.0001A 09/04 © 2004 Bunn-O-Matic Corporation
35879.1 071405
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