Bunn G3, G2G1, G2 User Manual

BUNN

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OPERATING & SERVICE MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: (217) 529-6601 FAX: (217) 529-6644

INTRODUCTION

This equipment will grind whole bean coffee to a user-selectable setting and dispense it into a bag. The equipment is only for indoor use on a sturdy counter or shelf. Adequate space must be available above the grinder to raise the lid when adding beans.

BUNN-O-MATIC COMMERCIAL GRINDER WARRANTY

Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the date of installation. In addition, Bunn warrants that the grinding burrs will grind coffee to meet original factory screen sieve analysis for three years from date of installation or for 30,000 pounds of coffee, whichever comes first. This warranty does not apply to any equipment, component or part that was not manufactured by Bunn or that, in Bunn’s judgement, has been affected by misuse, neglect, alteration, improper installation or operation, improper maintenance or repair, damage or casualty.

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.

The Buyer shall give 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. If requested by Bunn, the Buyer shall ship the defective equipment prepaid to an authorized Bunn service location. If Bunn determines, in its sole discretion, that the equipment does not conform to the warranty, Bunn shall repair the equipment with no charge for parts during the one year warranty period and no charge for labor by a Bunn Authorized Service Representative during the one year warranty period. If Bunn determines that repair is not feasible, Bunn shall, at its sole option, 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, AS SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, REPLACEMENT OR REFUND. Bunn shall not 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.

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.

TURKISH

11075.0000

PLEASE CLOSE LID

BEFORE GRINDING

CAUTION

PLEASE DO NOT POUR GROUND

COFFEE BACK INTO GRINDER

PERSONAL INJURY HAZARD Keep Fingers & Foreign Objects out of Hopper or Chute Opening

11076.0000

11075.0004 (SPECIAL)

WARNING

Use only on a properly protected circuit capable of the rated load. Electrically ground the chassis. Follow national/local electrical codes. Do not use near combustibles.

An extension cord, when used, must be shorter

than 20 feet if 16-gage 3-conductor wire, or

shorter than 10 feet if 18-gage 3-conductor wire.

FAILURE TO COMPLY RISKS EQUIPMENT

DAMAGE, FIRE, OR SHOCK HAZARD

READ THE ENTIRE OPERATING MANUAL

INCLUDING THE LIMIT OF WARRANTY AND

LIABILITY BEFORE BUYING OR USING THIS PRODUCT

20545.0000

1. Select the desired grind.

2. Lift the lid and pour coffee beans into the hopper.

3. Slip bag under the chute. Rest the bag on the tray.

4. Press the start switch.

5. Flip the cleaning lever a few times as dispensing slows.

6. Remove the bag. The grinder will stop automatically.

25152.0000 - G1

1. Select the desired grind.

2. Lift the lid and pour coffee beans into the hopper.

3. Slip bag under the chute. Rest the bag on the tray.

4. Press the start switch.

5. Flip the cleaning lever a few times as dispensing slows.

6. Remove the bag. The grinder will stop automatically.

25153.0000 - G2 & G3

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

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

grinding.

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.

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.

TROUBLESHOOTING (cont.)

PROBLEM

Grinder will not start. (cont.)

PROBABLE CAUSE

3. Bag Sensor. (cont.)

4. Motor overload protector.

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

vice

- Motor for disassembly.) See page 10 for AC Motors or see page 13 for DC Motors.

Ser-

Grinder will not shut off.

1. Off/On/Start Switch

2. Bag Sensor

3. Relay

(A) Move the switch to the “OFF” position.

(B) Refer to Switch for testing procedures. See page 16.

(A) Remove bag from under the dispense chute.

(B) Refer to Switch for testing procedures. See page 9.

Refer to ing procedures. See page 18.

Service

- Off/On/Start

- Bag Sensor

- Relay for test-

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