G9WD-RH
INSTALLATION & OPERATING GUIDE
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts
Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at
www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and
manual updates. For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.
41451.0001D 03/12 ©2009 Bunn-O-Matic Corporation
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY
Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers
and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor.
2) 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 to grind coffee to meet original factory screen sieve analysis - parts
and labor for 4 years or 40,000 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, 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 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.
392, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress, BUNN
Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with the stylized red line, BUNNlink, Bunn-OMatic,
Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, Cool Froth, DBC, Dr. Brew stylized Dr. design,
Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment Worldwide, Respect Earth, Respect Earth with
the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com, Scale-Pro, Silver Series, Single, Smart Funnel,
Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality in Beverage Equipment Worldwide, ThermoFresh,
Titan, trifecta, Velocity Brew, A Partner You Can Count On, Air Brew, Air Infusion, Beverage Bar Creator, Beverage Profit
Calculator, Brew better, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital Brewer
Control, Nothing Brews Like a BUNN, Pouring Profits, Signature Series, Tea At Its Best, The Horizontal Red Line, Ultra are
either trademarks or registered trademarks of Bunn-O-Matic Corporation.
2
41451.0001 030912
CONTENTS
Introduction.........................................................................................................................................3
User Notices........................................................................................................................................3
Electrical Requirements.......................................................................................................................4
Operating Controls...............................................................................................................................4
Coffee Grinding....................................................................................................................................5
Adjustments.........................................................................................................................................5
Cleaning...............................................................................................................................................6
Glossary...............................................................................................................................................7
Ground Counter...................................................................................................................................8
Grinder Scale Calibration.....................................................................................................................8
Batch Size Setting................................................................................................................................8
Coffee Calibration.................................................................................................................................8
Communicating With The Grinder........................................................................................................9
Troubleshooting...................................................................................................................................13
INTRODUCTION
This equipment will store up-to six pounds of whole bean coffee in the hopper 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.
USER NOTICES
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.
PERSONAL INJURY
HAZARD.
KEEP FINGERS AND
FOREIGN OBJECTS
OUT OF HOPPER
OR CHUTE OPENING.
#05876.0000
#37881.0000
#20545.0000
00824.0002
3
41451.0001 031111
ELECTRICAL REQUIREMENTS
Refer to Data Plate on the Grinder, and local/national electrical codes to determine circuit 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.
230 volts ac, 10 amp, single phase, 50 Hz, for most international grinders.
100 volts ac, 15 amp, single phase, for some international grinders.
CE 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.
• 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 IXP1.
d
c
b
e
a
OPERATING CONTROLS
Grind Pad (a)
Pressing initiates a grind cycle.
Stop Pad (b)
Pressing ends the operation of the grinder.
® Pad (c)
Pressing the copyright pad allows programming access.
Pads (d)
“Hidden” buttons used to navigate setup and programming menus.
Pads (e)
Press button to select small, medium or large batch size.
4
41451.0001 031111
COFFEE GRINDING
1.
2.
3.
4.
5.
Visually inspect the hopper for an ample supply of whole bean coffee.
Place a paper filter into the brew funnel. The filter must not be folded-over or tilted to one side.
Insert the funnel into the funnel rails until it stops.
Select batch size desired (e).
Momentarily press the “START” switch (a). The grinding will begin after a moment. The actual weight of the
coffee being ground into the funnel will be shown on the display during grinding. The grinder will automatically stop when the correct weight is reached. DO NOT TOUCH THE FUNNEL OR FUNNEL HANDLE DURING
GRINDING. THIS WILL CAUSE THE INCORRECT WEIGHT OF COFFEE TO BE GROUND.
6. Remove the funnel from the grinder and level the bed of grounds by gently shaking.
7. The loaded funnel is now ready for use in any commercial drip coffee brewer according to the manufacturer’s instructions.
ADJUSTMENTS
The grind can be set from fine to very coarse. The grind may be adjusted for use in most commercial coffee
brewers. The following procedures should be used to make adjustments.
Burr Adjustment
1. Unplug the grinder and remove the hopper by pulling forward with the handle.
2. Plug-in the grinder, place funnel with filter into the funnel rails. Momentarily press the “START” button and
release, run grind cycles until all of the coffee in the grind chamber is dispensed.
3. Remove two black screws from the lower control panel bezel.
4. Remove the control panel and hang the control panel on front of grinder by inserting metal tabs on the back
of control panel into slots on the front of grinder.
5. Make sure funnel with filter is still in place in the funnel rails. Go to the “GRIND MOTOR” menu under the
level 1 “SERVICE TOOL?” menu, and press the button under “ON” to start the motor. Slowly turn the adjusting screw in a clockwise direction until a metallic whine is heard due to the rubbing of the grinding burrs.
Reverse the adjusting screw just until the whining stops. Turn off the motor and exit to home screen.
6. Remove the white plastic cap, and replace it on the end of the grinder with the “0” aligned with the adjusting
screw slot.
7. The following settings approximately correspond to the CBC recognized grinds.
FINE GRIND: Rotate the adjusting screw to the “7” in a counterclockwise direction.
DRIP GRIND: Rotate the adjusting screw to the “8” in a counterclockwise direction.
REGULAR (COARSE) GRIND: Rotate the adjusting screw to the “12” counterclockwise direction.
NOTE: Exact adjustment will vary according to bean roast or added flavoring
8. Reinstall front control panel.
Tabs into slots on
front of grinder.
5
41451.0001 111909
CLEANING
WARNING – Unplug grinder before the removal of any panel or grind chamber-housing parts.
1. 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.
2. Remove the hopper by sliding all the way forward.
3. Remove the lid from the hopper, and empty of beans.
4. Clean and sanitize the hopper and lid. Care should be taken not to scratch the hoppers with any abrasive material.
5. Place an empty funnel with filter in the funnel rails. Press and release the “GRIND” button. Run a few cycles until all
coffee in the grind chamber is dispensed and disconnect the grinder from the power source.
6. Remove the funnel and filter and discard any remaining coffee grounds.
7. Remove two black screws from the lower control panel bezel.
8. Remove the control panel and hang the control panel on front of grinder by inserting metal tabs on the back of control
panel into slots on the front of grinder.
9. Remove the two screws holding the front cover to the burr housing. Carefully remove the burr housing front cover.
Clean inside surface with a dry stiff non-metallic bristle brush and wipe with a dry clean cloth.
10. Carefully remove the rotor cup, shear plate, burr rotor and motor shaft extension from the grinder. Clean all parts with
a dry stiff non-metallic bristle brush and wipe with a dry clean cloth.
11. Clean the grind chamber with a dry stiff non-metallic bristle brush and wipe with a dry clean cloth.
12. Reinstall the motor shaft extension, burr rotor, shear plate, rotor cup and front cover to the burr housing.
13. Reinstall the front control panel.
14. Refer to the “Adjustment” section of the Operating and Service manual for burr adjustment.
15. Reinstall the cleaned hopper on the grinder.
Align rear of hopper
with rails for proper
installation.
PREVENTIVE MAINTENANCE
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.
®
6-Month
Weekly Cleaning plus replace the dechaffer assembly.
05995.1000
Dechaffer Plate (package of 6)
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
41451.0001 031111
GLOSSARY
GRIND OZ: ##.##
(-)
DONE (+)
Adjust current weight setting
using (-) and (+) buttons
CENTER SW TARE
Allows present weight on scale
to be tared
SET GRIND TIME?
NO
YES
Allows adjustment of current
time setting
OUNCES = #.##
EXIT TARE
Shows current weight on scale
GRIND SEC: #.#
(-)
DONE (+)
Adjust current time setting using (-) and (+) buttons
TEST FREQUENCY?
NO
YES
Test read/write coils (BrewWISE enabled grinders only)
3 BATCHES DONE?
NO
YES
Allows adjustment of other
batch sizes (multiple batch size
grinders only)
FACTORY DEFAILT?
NO
YES
Resets all functions to factory
defaults
SERVICE TOOLS?
NO
YES
Test individual inputs and outputs
MACHINE TYPE?
WEIGHT
TIMED
Select between weight based or
time based grinding
TEST GRIND MOTOR
NO
NEXT YES
Allow selection of grinder motor test
CALIBRATE SCALE?
NO
YES
Allows calibration of scale
GRIND MOTOR
ON
DONE OFF
Turns grinder motor ON and
OFF
CALIBRATE SCALE
EXIT TARE
Allows scale to be tared for
calibration
TEST SWITCHES?
NO
YES
Allows selection of switch test
PRESS RIGHT
HIDDEN TO EXIT
Pressing any switch will show
switch selected on screen
TEST SCALES?
NO
YES
Allows selction of scale test
CALIBRATE COFFEE
NO
YES
Set “offset” weght for coffee
name selected
SWITCHES
ENABLE DISABLE
Allows switches on control
panel to be disabled for servicing grinder
Displayed while scale is being
tared
PLEASE WAIT
TARE
CALIBRATION OZ
(-)
8.00
(+)
Adjust weight be added for calibration
PLEASE WAIT
CAL
Displayed while scale is calibrating
MAX BIT SPREAD #
(-)
DONE
(+)
Pm Burr LBS
RESET
7
#
Set maximum “offset” adjustment for grind
Shows total amount of coffee
which has been ground through
grinder
41451.0001 060710
GROUND COFFEE COUNTER
The grinder will keep a running total of the pounds of coffee the grinder has ground. This running total is
shown in the “PmBurrsLbs #” menu, under the “SERVICE TOOLS” menu. This running total can be used to
determine when the grinding burrs need cleaning or replacement. Pressing the button under “RESET” will reset
this total to zero.
GRINDER SCALE CALIBRATION
1. Place empty funnel into funnel rails.
2. Press and hold the right hidden (copyright) button until the “MACHINE TYPE” menu appears. (See level 2
programming)
3. Press the middle button under the screen until the “CALIBRATE SCALES?” menu appears.
4. Press the right button under “YES” in the “CALIBRATE SCALES?” screen.
5. Press the middle button under “TARE”.
6. When the “PLACE 8oz” screen appears, remove the funnel, and place a calibrated 8oz weight in the funnel.
Replace the funnel in the funnel rails.
7. Press the middle button under “DONE”. The grinder will go through a calibration, and then return to the
main screen when calibration is complete.
8. Remove the weight from the funnel. The grinder is now ready calibrated and ready for normal operation.
BATCH SIZE SETTING
1. Press and hold the right hidden, (copyright) button until the “REVIEW RECIPIES” menu appears. (See level
1 programming)
2. Press the button under “YES” and the “COFFEE NAME” screen appears.
3. Press the button under “NEXT” until the name of the coffee you wish to set the batch sizes for appears.
4. Press “MODIFY” under the screen containing the name of the coffee you wish to set the batch sizes for.
5. Using the buttons under (-) and (+), change the weight displayed to the new weight desired. Press a different batch size button to set the weight for that batch size. Press the button under “DONE” when complete.
6. In the “3 BATCHES DONE” menu, if no further changes are to be made, press the button under “YES” to exit
the “COFFEE CALIBRATION” menu.
COFFEE CALIBRATION
1. After the “3 BATCHES DONE” menu, press “YES” to enter the “COFFEE CALIBRATION” menu.
2. This menu sets the “offset” weight for the coffee name selected, so that accurate weight grinding will be
achieved.
3. With a funnel in place, press the “GRIND” button. After grinding, the coffee weight will be read and calibrated, and the “COFFEE NAME” “SETUP COMPLETE” menu will appear. Press the middle button to loop
back and select another coffee name for batch size setting and calibration.
8
41451.0001 051010
COMMUNICATING WITH THE GRINDER
Press the hidden
(copyright) button
for 1 second
“COFFEE NAME”
PREV DONE NEXT
SELECT COFFEE
NO
YES
ENTER PASSWORD
0
0
0
Press right hidden
(copyright) button to
scroll to next screen
Pressing “PREV” scrolls to
the previous coffee name
Pressing “NEXT” scrolls to
the next coffee name
“COFFEE NAME”
MODIFY SHOW NEXT
SET PASSWORD
0
0
0
Press right hidden
(copyright) button to
scroll to next screen
Press right hidden
(copyright) button to
scroll to next screen
SMALL BATCH
GRIND oz
#.##
Pressing “NEXT” scrolls
to the next coffee name
REVIEW RECIPES?
NO
YES
MEDIUM BATCH
GRIND oz
#.##
ENTER ASSET #
0
0
0
Press right hidden
(copyright) button to
scroll to next screen
LARGE BATCH
GRIND oz
#.##
continue to (A)
SERVICE TOOLS?
NO
YES
COFFE CAL #
##
continue to (B)
9
41451.0001 111909
COMMUNICATING WITH THE GRINDER (Continued)
from (A)
From previous
page
GRIND oz
(-) DONE
#.##
(+)
FACTORY DEFAULT
NO
YES
The small batch size will
flash, press (-) or (+) to
adjust grind weight. After
first batch size is set,
additional batch sizes can
be set by pressing appropriate
batch size button. Press “DONE”
after all three batch sizes
have been set.
THREE BATCHES DONE
NO
YES
FINISHED, returns
to main screen
CALIBRATE COFFEE
NO
?
YES
Press “GRIND” button to
start coffee calibration
“COFFEE NAME”
SETUP COMPLETE
Loop back to
“COFFEE NAME”
10
41451.0001 111909
COMMUNICATING WITH THE GRINDER (Continued)
from (B)
TEST OUTPUTS
NO
YES
GRIND MOTOR
ON NEXT OFF
TEST GRIND MOTOR
NO
YES
TEST SWITCHES ?
NO
YES
PRESS RIGHT
HIDDEN TO EXIT
TEST FREQUENCY ?
NO
YES
CENTER SW TARE
TEST SCALE ?
NO
YES
PLEASE WAIT
TARE
SWITCHES
ENABL
DISABLE
PmBurrLBS
RESET
Pressing any switch in this
mode will display the switch
name in the grinder display.
#
SENSOR BITS ####
Weight
##oz
After the funnel is “tared”
add a calibrated weight
to check scale.
return to
“FACTORY DEFAULTS”
screen
11
41451.0001 111909
COMMUNICATING WITH THE GRINDER (Continued)
LEVEL 2 FUNCTIONS:
Press the hidden
(copyright) button for
3 seconds in “ENTER
PASSWORD” menu.
MACHINE TYPE
WEIGHT
TIMED
CALIBRATE SCALE ?
NO
YES
CALIBRATION OZ
(-)
8.00
(+)
MODIFY MAXBIT
NO SPREAD? YES
CALIBRATE SCALES
EXIT TARE
SHUToff Bits ##
(-)
DONE
(+)
PLEASE WAIT
TARE
MaxBits read #
(-)
DONE
(+)
PLACE 8.00 oz
EXIT DONE
Finished, returns
to main screen
PLEASE WAIT
CAL
12
41451.0001 111909
TROUBLESHOOTING
A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems
encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic
Technical Service Department.
• Inspection, testing and repair of electrical equipment should be performed only by qualified service personnel.
• All electronic components have 120 volts ac and low voltage dc potential on their terminals. Shorting of
terminals or the application of external voltage may result in board failure.
• Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. Of
an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a
terminal or crimp.
• Make certain that all electrical connections are tight and isolated.
WARNING
• Exercise extreme caution when servicing electrical equipment.
• Turn power OFF when servicing, except when electrical tests are specified.
• Follow recommended service procedures.
• Replace all protective shields or safety notices.
Problem
Grinder will not start
Probable Cause
1. Motor overload protector
Remedy
Remove the metal plug located
on the right side of the housing.
Press the red “Reset” button. Listen carefully for a “click”. This resets the motor protection circuit
and indicates that the motor may
have encountered an overload. (An
overload can occur when something other than coffee is inserted
into the hopper for grinding)
2. No power
Check the voltage at the power cord
with a voltmeter. Voltage must be
120 volts across the black and
white wires.
3. START button
Use “TEST SWITCHES?” menu
under “SERVICE TOOLS?” menu
in level 1 functions to test START
button.
4. Circuit board
Circuit board. Check that there is
24VDC to the relay coil when the
Start button is pressed.
13
41451.0001 111909
TROUBLESHOOTING (Continued)
Problem
Grinder will not start (continued)
Grinder will not shut off
Incorrect weight of coffee dispensed
Probable Cause
5.Relay
Remedy
Check that relay contacts close
when start switch is pressed.
6.Motor
With a voltmeter, check that 120
volts AC is present across L1 and
L2 on the rear of the motor when
the Start switch is pressed. If voltage is present, and motor does not
start, replace motor.
1. STOP button
Use “TEST SWITCHES?” menu under “SERVICE TOOLS?” menu in
level 1 functions to test STOP button.
2.Relay
With power removed from the machine, check that there is no continuity across the relay contacts.
1.Grinder scale requires calibra- Refer to GRINDER WEIGHT CALIBRATION procedure.
tion.
2. Funnel handle touched during
grinding.
14
Do not touch funnel or funnel handle during grinding operation.
41451.0001 111909
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