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.
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10191 070306
SPECIAL
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ELECTRICAL REQUIREMENTS
The 120 volt and 240 volt grinders have an attached cordset and requires 2-wire, grounded service rated
120 volts ac and 240 volts ac, 15 amp, single phase, 60 Hz. The 230 volt grinders have a power connector and
requires 2-wire, grounded service rated 230 volts ac, 15 amp, single phase, 50 Hz.
INITIAL SET-UP
CAUTION - Unplug the grinder throughout the initial set-up.
1. Open the top lid. Clear all foreign objects and shipping materials from the hopper compartment and the
entrance to the grind chamber.
2. Tip the machine gently, on its back, so it rests with approximately one inch of the bottom overhanging the
work surface.
3. Remove the drawer from the base assembly.
4. Place the base against the grinder bottom and align the four sets of holes.
5. Securely fasten the base to the grinder bottom using the four screws and washers provided.
6. Raise the grinder to the upright position.
7. Insert the drawer into the base assembly.
8. The grinder can now be plugged-in and put into service.
OPERATING CONTROLS
Off/On/Start Switch
OFF - (upper position)
Switching to this position stops the operation of the grinder.
ON - (center, resting position)
The switch will return to this position after a grind cycle has begun and will remain in this position after grinding
has ceased.
START - (lower, momentary position)
Pressing the switch initiates grinding only when a bag is in place behind the chute.
Grind Selector
Allows the user to vary the grind for each bag of coffee. Each setting will provide precisely the same grind every
time it is selected.
Bag Sensor
Prevents the grinder from operating unless the back of a bag is in place behind the dispense chute.
Do not attempt to bypass this safety device.
CLEANING
The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all
surfaces on Bunn-O-Matic equipment. Regular cleaning will keep your grinder looking new for years
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10191 011500
COFFEE GRINDING
1. Turn the selector knob to align the red arrow with the desired grind.
2. Raise the top lid and add the whole bean coffee. Close the top lid.
3. Locate the back of a bag behind the dispense chute. (The grinder will not operate unless the bag is behind
the chute.)
4. Allow the bag to rest on the screen beneath the chute.
5. Press the start switch.
6. Flip the cleaning lever a few times as dispensing slows.
7. Remove the bag when ground coffee is no longer dispensed from the chute. The grinder will stop automatically as the bag is removed.
NOTE - The start switch will have to be pressed again to continue the cycle if the bag is removed while grind-
ing.
ADJUSTMENT
1. Place an empty bag on the screen, with the back of the bag behind the dispense chute.
2. Start the grinder to clear the grind chamber. Leave grinder “ON”.
3. Turn the Grind Selector knob to the “TURKISH” (fully clockwise) position.
4. Using a small flat blade screwdriver, loosen the two set screws on the left side of the grind selector knob.
5. Hold the knob in the “TURKISH” (fully clockwise) position with one hand.
6. Using a large flat blade screwdriver, slowly turn the adjusting screw in the center of the grind selector knob
to the right (clockwise) until a metallic whine can be heard due to the rubbing of the grinding burrs.
7. While holding the knob in the “TURKISH” (fully clockwise) position, back off the screw to the left (counterclockwise) just until the metallic whine ceases.
8. Turn-off the grinder.
9. Push the knob against the dial plate and tighten both set screws on the left side of the grind selector
knob.
10. Turn the grinder on and listen again for the metallic whine with the grind selector knob in the turkish (fully
clockwise) position. If the metallic whine is heard, repeat steps 7 through 10 until the sound ceases.
11. If no metallic whine is heard, the grinding burrs are adjusted properly.
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10191 011500
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 person-
nel.
WARNING – • Exercise extreme caution when servicing electrical equipment.
• Disconnect the grinder from the power source 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. No power or incorrect voltage.
2. Off/On/Start Switch.
3. Bag sensor.
REMEDY
(A) Plug-in the grinder.
(B) Check the voltage at the wall outlet with a voltmeter. It must be 120
volts ac for two wire 120 volt models
or 230 volts ac for two wire 230 volt
50 Hz models or 240 volts ac for two
wire 240 volt 60 Hz models.
(A) Press the switch to the “START”
position.
(B) Refer to Service - Off/On/Start
Switch for testing procedures. See
page 16.
(A) The receiving bag must be placed
on the tray screen and have the back
of the bag behind the dispense chute
to activate the sensor switch.
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10191 011500
TROUBLESHOOTING (cont.)
PROBLEM
Grinder will not start. (cont.)
Grinder will not shut off.
PROBABLE CAUSE
3. Bag Sensor. (cont.)
4. Motor overload protector.
1. Off/On/Start Switch
REMEDY
(B) Refer to Service - Bag Sensor
Switch for testing and adjustment
procedures. See page 9.
Remove the plug located on the
right side of the housing. Press the
red “Reset” button visible through
the opening. Listen carefully for a
“click”. This resets the motor protection circuit and may indicate that an
overload has been encountered by
the motor. (An overload can occur
when something other than coffee is
inserted into the hopper for grinding.
Refer to Service - Motor for disassembly.) See page 10 for AC Motors
or see page 13 for DC Motors.
(A) Move the switch to the “OFF”
position.
2. Bag Sensor
3. Relay
(B) Refer to Service - Off/On/Start
Switch for testing procedures. See
page 16.
(A) Remove bag from under the
dispense chute.
(B) Refer to Service - Bag Sensor
Switch for testing procedures. See
page 9.
Refer to Service - Relay for testing
procedures. See page 18.
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10191 011500
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