FPG-2 DBC
French Press Coffee Grinder
36705.0000 J 04/25 © 2004 - 2025 Bunn-O-Matic Corporation
Bunn-O-Matic Corporation
Post Office Box 3227, Springfield, Illinois 62708-3227
Phone (217) 529-6601 | Fax (217) 529-6644
www.bunn.com
INSTALLATION & OPERATING GUIDE
For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.
FPGA-2 DBC, FPGB-2 DBC
2
Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
1) All coffee and tea dispensers/servers, MCR/MCP/MCA single cup brewers, and BUNNlink
®
electronic circuit and/or
control boards – 1 year parts and 1 year labor.
2) Product-specific warranties for Premia
™
,Crescendo
®
, Fast Cup
®
, Sure Immersion
®
, Sure Tamp
®
and others – 1 year
parts and 1 year labor. Please visit commercial.bunn.com/support/warranty-lookup for further details.
3) All other equipment – 2 years parts and 1 year labor plus added warranties as specified below:
a) Electronic circuit and/or control boards – parts and labor for 3 years.
b) Compressors on refrigeration equipment – 5 years parts and 1 year labor.
c) Grinding burrs on coffee grinding equipment for 4 years or 40,000 pounds of coffee, whichever comes first.
4) For customers subscribed to BUNNlink
®
, BUNN reserves the right to periodically auto-push critical software
updates that will enhance functionality or performance of the BUNN equipment, unless the customer requests
advance notice of such software updates from BUNN in writing.
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, non periodic cleaning and descaling, equipment failures
related to poor water quality, damage or casualty. In addition, the warranty does not apply to replacement of items
subject to normal wear with use including but not limited to user replaceable parts such as seals and gaskets. 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-O-MATIC COMMERCIAL PRODUCT WARRANTY
3
Carefully read and follow all notices on the grinder and in this manual. They were written for your
protection. All notices on the grinder are to be kept in good condition. Replace any unreadable or
damaged labels.
05876.0000
20545.0000
WARNING
To reduce the risk of electric shock,
do not remove or open cover.
No user-serviceable parts inside.
Authorized service personnel only.
Disconnect power before servicing.
WARNING
37881.0000
00824.0002
The FPG-2 DBC will store up-to three pounds of whole bean coffee in each of two hoppers and grind it to
a preset grind and amount into an awaiting funnel and filter from most commercial drip coffee brewers. The
equipment is only for indoor use on a sturdy counter or shelf. Adequate space must be available above the
grinder to raise the lids when adding beans. Use only with whole bean coffee.
The grind is preset at the factory to drip specifications as set forth by the United States Department of
Commerce and adopted by the Coffee Brewing Center of the Pan American Coffee Bureau. Adjustments
may be made to alter both the amount and grind from the factory setting.
CONTENTS
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY ......................................................................................2
INTRODUCTION .......................................................................................................................................................3
USER NOTICES ........................................................................................................................................................3
NORTH AMERICAN REQUIREMENTS ....................................................................................................................4
CE REQUIREMENTS ................................................................................................................................................4
ELECTRICAL REQUIREMENTS ...............................................................................................................................5
OPERATING CONTROLS .........................................................................................................................................5
OPERATING CONTROLS .........................................................................................................................................6
INITIAL SETUP .........................................................................................................................................................6
CLEANING ................................................................................................................................................................7
Weekly....................................................................................................................................................................7
6 Month ..................................................................................................................................................................7
PREVENTIVE MAINTENANCE .................................................................................................................................7
6 Month ..................................................................................................................................................................7
1-Year.....................................................................................................................................................................7
COFFEE GRINDING .................................................................................................................................................8
ADJUSTMENTS ........................................................................................................................................................8
Burr Adjustment......................................................................................................................................................8
TIMER ADJUSTMENT ..............................................................................................................................................9
SCHEMATICS ......................................................................................................................................................... 10
INTRODUCTION
USER NOTICES
4
• This appliance must be installed in locations where it can be overseen by trained personnel.
• For proper operation, this appliance must be installed where the temperature is between 41°F to 95°F
(5°C to 35°C).
• Appliance shall not be tilted more than 10° for safe operation.
• An electrician must provide electrical service as specified in conformance with all local and national codes.
• This appliance must not be cleaned by pressure washer.
• This appliance can be used by persons if they have been given supervision or instruction concerning
use of the appliance in a safe way and if they understand the hazards involved.
• Keep the appliance and its cord out of reach of children.
• Appliances can be used by persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved.
• If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service
personnel with a special cord available from the manufacturer or its authorized service personnel in
order to avoid a hazard.
• Machine must not be immersed for cleaning.
• This appliance is intended for commercial use in applications such as:
– staff kitchen areas in shops, offices and other working environments
– by clients in hotel and motel lobbies and other similar types of environments
• Access to the service areas permitted by Authorized Service personnel only.
NORTH AMERICAN REQUIREMENTS
• This appliance must be installed in locations where it can be overseen by trained personnel.
• For proper operation, this appliance must be installed where the temperature is between 5°C to 35°C.
• Appliance shall not be tilted more than 10° for safe operation.
• An electrician must provide electrical service as specified in conformance with all local and national codes.
• This appliance must not be cleaned by water jet.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given instructions
concerning use of this appliance by a person responsible for its safety.
• This appliance is intended to be used for commercial applications, for example in kitchens of restau-
rants, canteens, hospitals and in commercial enterprises such as bakeries, butcheries, etc., but not for
continuous mass production of food.
• Children should be supervised to ensure they do not play with the appliance.
• If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service
personnel with a special cord available from the manufacturer or its authorized service personnel in
order to avoid a hazard.
• Machine must not be immersed for cleaning.
• Machine rated IX P1.
CE REQUIREMENTS
5
Grind Pad (a)
Pressing GRIND initiates a timed grind cycle.
Stop Pad (b)
Pressing STOP ends the operation of the grinder.
® PAD (c)
Pressing the ® pad allows programming access. (see page 8).
Hopper/Batch Selector Pads (d)
These pads are located on the funnel depictions on each side of the grinder with a total of 6 pads. Select-
ing one of these pads will select the amount of grind and side from which to grind.
Example: Selecting the lower pad on the left side will grind enough beans from the left side of the grinder
to brew the amount programmed into grinder.
Control Board
The control board determines the amount of beans that will leave the hopper in a grind cycle. The timer
portion can be adjusted to dispense a different amount from each hopper and each batch size. The scale is
from 0.4 to 99.9 seconds. Refer to the Adjustments section for timer setting chart (page 9).
OPERATING CONTROLS
d
d
b
a
c
ELECTRICAL REQUIREMENTS
This grinder has an attached cordset and requires 2-wire, grounded service rated:
• 120 volts ac, 15 amp, single phase, 60 Hz, for domestic grinders.
• 220-240 volts ac, 10 amp, single phase, 50 Hz, for most international grinders.
• 100 volts ac, 15 amp, single phase, for some international grinders.
continued >
(EARLY MODELS)
6
1. Open the top lid.
2. Clear all foreign objects and shipping material from the hopper compartment and the entrance to the
grind chamber.
3. Plug in the grinder.
4. Fill the hopper compartments with whole bean coffee. (Capacity 6 pounds each).
The grinder is now ready for use.
OPERATING CONTROLS
Grind Pad (a)
Pressing the GRIND button initiates a timed grind cycle.
Stop Pad (b)
Pressing the STOP button ends the operation of the grinder.
PAD (c)
Pressing the hidden button allows programming access (see page 8).
Hopper/Batch Selector Pads (d)
These pads are located on the funnel depictions on each side of the grinder with a total of 6 pads.
Selecting one of these pads will select the amount of grind and side from which to grind.
Example: Selecting the lower pad on the left side will grind enough beans from the left side of the grinder to
brew the amount programmed into grinder.
Power ON/OFF Pad (e) (100V Models)
Pressing the ON/OFF pad alternately turns the grinder on and off.
Control Board
The control board determines the amount of beans that will leave the hopper in a grind cycle. The timer
portion can be adjusted to dispense a different amount from each hopper and each batch size. The scale is
from 0.4 to 99.9 seconds for software version XX.41 and lower, and 0.4 to 60 seconds for software version
XX.42 and higher. Refer to the Adjustments section for timer setting chart (page 9).
INITIAL SETUP
SECONDS
GRINDER
I
O
d
c
b
a
e
d
continued from previous page
7
Weekly
Clean all exterior surfaces using a damp cloth rinsed in any mild, nonabrasive, liquid detergent.
Care should be taken not to scratch the grinder with any abrasive material.
CLEANING
1-Year
1. On grinders with slide plates check the slide plates and clean.
2. Inspect and clean/replace burrs and grind chamber if necessary.
3. Adjust the burrs and grind time to your specifications for particulate size and throw weight.
6 Month
Replace the dechaffer assembly.
20588.0000 Dechaffer Plate (2 required)
Bunn-O-Matic
®
Corporation recommends that preventive maintenance be performed at regular intervals.
Maintenance should be performed by a qualified service technician. For Technical Service, contact
Bunn-O-Matic
®
Corporation at 1-800-286-6070.
NOTE: Replacement parts or service caused by failure to perform required maintenance is not covered
by warranty.
PREVENTIVE MAINTENANCE
6 Month
1. Empty all beans from both hopper(s).
2. Plug-in the grinder, place funnel with filter into funnel rails. Press the Off/On/Start switch to the “START”
lower position and release. Run a few grind cycles until all the coffee in the grind chamber is dispensed
and disconnect grinder from the power source.
3. Remove the funnel with filter and carefully tip the grinder over on it’s back.
4. Remove the two #10-32 screws securing burr housing cap assembly to the burr housing and remove
the burr housing cap assembly.
5. Remove load disc and slide rotator with lower burr, spring and brass bushing off to the motor shaft.
6. Clean the grind chamber and all parts with a dry non-metalic bristle brush and wipe with a dry
clean cloth.
7. Reinstall brass bushing (flanged end first), spring and rotor with lower burr onto the motor shaft.
Reinstall load disc flat side toward rotar and burr housing cap assembly to the burr housing.
8. Refer to the initial setup/adjustments section to vary grind or weight of dispensed coffee if necessary.
WARNING - Unplug the grinder before the removal of any panel or grind chamber-housing parts.
8
Lock Nut
Hash
Marks
Adjusting
Screw
COFFEE GRINDING
NOTE: Exact adjustment will vary according to bean
roast or added flavoring.
FINE GRIND: Rotate the adjusting screw 7 hash marks
in a counterclockwise direction.
DRIP GRIND: Rotate the adjusting screw 8 hash marks
in a counterclockwise direction.
REGULAR (COARSE) GRIND: Rotate the adjusting
screw 10 hash marks in a counterclockwise direction.
1. Unplug the grinder and empty all beans from the hoppers.
2. Plug in the grinder, press and release GRIND (with either hopper selected). Run a few grind cycles until
all of the coffee in the grind chamber is used.
3. Remove funnel with filter and carefully tip the grinder over on its back.
4. Press GRIND and slowly turn the adjusting screw in a clockwise direction until a metallic whine is heard
due to the rubbing of the grinding burrs. (It may be necessary to start more than one grind cycle to
obtain this sound.)
5. Make a mark with a pen on the decal to note the position of the arrow on the grind adjustment screw.
6. The following settings approximately correspond to the CBC recognized grinds. All are referenced from
the arrow position noted in #5.
Burr Adjustment
The grind can be set from very fine to very coarse. The amount may be adjusted for use in most
commercial coffee brewers. The following procedures should be used to make adjustments. A
change in the burr adjustment will also change the amount dispensed. Any adjustment of the burrs
should be followed by an adjustment of the timer.
ADJUSTMENTS
1. Visually inspect the selected hopper for an ample supply of whole bean coffee.
2. Carafe Brewing: Place a paper filter into brew funnel. Insert funnel into rails and push until
it stops.
3. French Press: Place French Press on grinder base and push towards rear until it stops.
4. Choose the batch size and side of grinder to use.
5. Press GRIND. The grinding action will stop automatically after the preset amount of ground
coffee is dispensed into the funnel.
9
TIMER ADJUSTMENT
Approximate Amount
(in Ounces)
Timer Settings
(in Seconds)
1½
2.5
2
4.5
2½
7.5
3
10.5
These times are for medium roast, regular grind coffee.
Roast of coffee and grinds size will vary timer setting.
1. Determine the grind setting. (The factory setting is drip, to determine other settings, refer to the
previous section.)
2. Use the table below to find approximate timer setting for the amount of coffee desired.
3. To enter the setup mode and make an adjustment, press and hold the hidden programming button.
One of the batch indicators will begin to flash off and on. At this point, release the button.
4. Push the hopper/batch selector button for the batch to be adjusted. Note that the digital display shows
the current slide gate time setting (in seconds).
5. To increase the time, press GRIND. To decrease, press STOP.
6. To change the chamber clean-out time, press the same batch button again and note that the indicator
light begins to blink more rapidly and the display shows the current clean-out time.
7. To increase the time, press GRIND To decrease it, press STOP.
8. After the cleanout time has been entered, press another batch pad and repeat steps 4 to 7. Otherwise,
to exit the programming mode, press and release the hidden button and the grinder returns to the
normal operating mode, using the new settings.
NOTE: While in the setup mode, if no buttons are pushed for 60 seconds, the grinder will return to
normal operations, retaining any settings made while in the setup mode.
Three different batch settings are selectable for each hopper. Each batch is independently adjustable by
setting the length of time a slide gate opens to allow beans to drop into the grinding chamber. A second
time setting for each batch determines how long the grind motor continues to run after the slide gate
closes. This time is set long enough to insure that all the beans dropped into the grind chamber are ground
and dispensed.
(CONTROL BOARD)
10
SCHEMATIC WIRING DIAGRAM
FPG-2 DBC, FPGB-2 DBC
N
W
H
I
W
H
I
/
B
L
K
B
L
K
L1
LEFT GATE
LIMIT THERMOSTAT
LIMIT THERMOSTAT
SOL
SOL
WHI/ORA
WHI/GRN
WHI/YEL
RED
WHI/BLK
WHI/BLK
J1-6
J1-6
J6-10
J6-5
J6-1
CONTROL PC BOARD
COIL
RELAY
RIGHT GATE
1
11
SHIELD
SWITCH UNIT ASSY
B2
C4
C5
C6
A2
A1
C3
C2
C1
WHI
RED
RED
RED
BLU
BLK
36706.0000 C 08/30/24 © 2004 Bunn-O-Matic Corporation
Switch Unit Assembly Codes
A1 Grind
A2 Stop
B2 Hidden Button "Right"
C1 Large Batch Size "Left"
C2 Medium Batch Size "Left"
C3 Small Batch Size "Left"
C4 Large Batch Size "Right"
C5 Medium Batch Size "Right"
C6 Small Batch Size "Right"
M
+
–
AC
AC
RECT
3
AMP
GRN
6
8
100 VAC,50/60Hz
120 VAC,60Hz
2 WIRE
SINGLE PHASE
N
L1
LEFT
GATE
LIMIT
THERMOSTAT
LIMIT
THERMOSTAT
SOL
WHI/ORA
WHI/ORA
WHI/GRN
WHI/YEL
WHI/YEL
RED
WHI
WHI
WHI
WHI
WHI/BLK
WHI
WHI
WHI
WHI
GRN GRN
WHI
WHI
J1-6
J1-1
J6-10
J6-5
J6-1
CONTROL PC BOARD
RELAY
RIGHT
GATE
1
11
SHIELD
SWITCH UNIT ASSY
B2
C4
C5
C6
A2
A1
C3
C2
C1
WHI
RED
RED
RED
BLU
BLK
RED
RED
Switch Unit Assembly Codes
A1 Grind
A2 Stop
B2 Hidden Button "Right"
C1 Large Batch Size "Left"
C2 Medium Batch Size "Left"
C3 Small Batch Size "Left"
C4 Large Batch Size "Right"
C5 Medium Batch Size "Right"
C6 Small Batch Size "Right"
M
+
–
AC
AC
RECT
3
AMP
GRN
6
8
SCHEMATIC WIRING DIAGRAM
FPGA-2 DBC
EMI FILTER
36706.0001 C 08/30/24 © 2005 Bunn-O-Matic Corporation
SOL
COIL
1
220-240 VAC
2 WIRE
SINGLE PHASE
50-60 Hz
SCHEMATICS
11
BLK
WHI
RED
RED
36781.0000 B 08/30/24 ©2004
BUNN-O-MATIC CORPORATION
SCHEMATIC WIRING DIAGRAM
FPG
NL1
RED
WHI/BLK
BLK
WHI/BLU
WHI/BRN
WHI
RED
WHI/BLK
BLK
WHI/BLU
WHI/BRN
WHI
GRN
BLK
SM
MED
LG
RED
WHI/BRN
WHI/BLU
1
2
3
4
5
P2
BLK
RED
WHI/BRN
WHI/BLU
DC
MOTOR
BLK
WHI
RED
RED
4
1
2
3
P3
GREEN
3
AMP
TIMER
SELECT SW.
BLK
120 VOLTS AC
2 WIRE
SINGLE PHASE
60 Hz
1
2
3
A
W
H
I
B
L
K
1
2
3
4
5
P2
6
SCHEMATICS
BLK
WHI
RED
RED
36781.0001 B 08/30/24 ©2004
BUNN-O-MATIC CORPORATION
SCHEMATIC WIRING DIAGRAM
FPGA
RED
WHI/BLK
BLK
WHI/BLU
WHI/BRN
WHI
GRN
BLK
SM
MED
LG
RED
WHI/BRN
WHI/BLU
1
2
3
4
5
P2
BLK
RED
WHI/BRN
WHI/BLU
DC
MOTOR
BLK
WHI
RED
RED
4
1
2
3
P3
3
AMP
TIMER
SELECT SW.
BLK
220-240 VOLTS AC
2 WIRE
SINGLE PHASE
50-60 Hz
1
2
3
A
R
E
D
B
L
K
GRN or GRN/YEL
L1 L2
EMI
FILTER
12
