Bunn G9-2 HD-S, G9-2 HD, G9-2T HD User Manual

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OPERATING & SERVICE MANUAL

BUNN-O-MATIC CORPORA TION OF

CANADA LTD.

280 INDUSTRIAL PARKWAY SOUTH

AURORA, ONTARIO. L4G 3T9

PHONE: [phone] FAX: [phone]

10218.7000 3/00 ©1994 Bunn-O-Matic Corporation

CONTENTS

Introduction .............................................................................. 2

Warranty ................................................................................... 2

User Notices.............................................................................. 3

Electrical Requirements ............................................................ 4

Operating Controls ....................................................................4

Initial Set-Up ............................................................................. 4

Cleaning .................................................................................... 5

Coffee Grinding ......................................................................... 5

Adjustments ..............................................................................6

Troubleshooting ........................................................................ 7

Service .................................................................................... 10

Wiring Diagram .......................................................................20

INTRODUCTION

This equipment will store up-to six 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 fine 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.

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 [phone] or
by writing to 280 Industrial Parkway South, Aurora, Ontario L4G 3T9. 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, inciden-

tal or consequential damages.

2

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.

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.

CAUTION

PERSONAL INJURY

HAZARD.

KEEP FINGERS AND

FOREIGN OBJECTS

OUT OF HOPPER

OR CHUTE OPENING.

#05876.7999

DISPENSE TIME (Seconds)

DISPLAY

Increase Decrease

+

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 7/90 © 1990 Bunn-O-Matic Corporation

#20545.7000

DISPENSE TIME

3.2

(SECONDS)

20

15

10

6

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HIGH

3

25

11

30

32

4

22

20

15

10

6

3.2

.4.4

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HIGH

3

25

30

32

4

Readout will be displayed for 5 minutes.

Timer can only be adjusted

while readout is displayed.

WARNING

HAZARDOUS VOLTAGE

UNPLUG GRINDER

BEFORE REMOVING!

#05942.0000

LEFT

LOW

RIGHT

LOW

WARNING

HAZARDOUS VOLTAGE

UNPLUG GRINDER

BEFORE REMOVING

#25763.0000

3

ELECTRICAL REQUIREMENTS

This grinder has an attached cordset and requires 2-wire, grounded service rated 120 volts ac,

15 amp, single phase, 60 Hz.

OPERATING CONTROLS

Off/On/Start Switch

OFF - (upper position) Switching to this position stops all operation of the grinder.

ON - (middle 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
a timed grind cycle.

Hopper Selector Switch

Left - Switching to this position allows beans to be dispensed

from the left hopper.

Right - Switching to this position allows beans to be dispensed

from the right hopper.

P633

Dispense Timer

The dispense timer controls the amount of beans that will leave the hopper in a grind cycle. The

timer can be adjusted to dispense a different amount from each hopper. The scale is from 0.4 to

150.0 seconds. Refer to the Adjustments section for timer setting chart (page 7).

INITIAL SET-UP

1. Open the top lid. Clear all foreign objects and shipping material from

the hopper compartment and the entrance to the grind chamber.

2. Remove the lower front inspection panel.

3. Plug-in the grinder.

4. Select either the right or left hopper with the selector switch. Do

not press the start switch.

5. If grinder has an analog timer, proceed to step 6. If grinder has a

digital timer, momentarily press the center (DISPLAY) button on
the dispense timer panel. The readout will indicate the present
timer setting in seconds and will remain displayed for five min­utes.

6. Adjust the timer setting to obtain the desired amount of coffee for the selected hopper.

7. Repeat steps 4 thru 6 for the other hopper.

8. Fill the hopper compartments with whole bean coffee. (Capacity 6 pounds each). The grinder is

now ready for use.

P633

4

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. Care should be taken not to scratch the hopper or windows with any
abrasive material. Regular cleaning will keep your grinder looking new for years.

COFFEE GRINDING

P598P597 P599 P600 P601

STEP 1 STEP 2 STEP 3 STEP 4 STEPS 5 & 6

1. Visually inspect the desired hopper for an ample supply of whole bean coffee.

2. Place a paper filter into the brew funnel. The filter must not be folded-over or tilted to one side.

3. Insert the funnel into the funnel rails and push until it stops.

4. Momentarily press the start switch. The grinding action will stop automatically after the preset amount of

ground coffee is dispensed into the funnel.

5. Remove the funnel from the grinder and level the bed of grounds by gently shaking.

6. The loaded funnel is now ready for use in any commercial drip coffee brewer according to the manufacturer’s

instructions.

5

ADJUSTMENTS

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.

Burr Adjustment

1. Unplug the grinder and empty all beans from the hoppers.

2. Plug-in the grinder, momentarily press the off/on/start switch to the

“START” (lower) position (with either hopper selected) and release, run a

few grind cycles until all of the coffee in the grind chamber is used-up.

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3. Remove the upper front inspection panel.

4. Loosen the burr adjustment screw from its locked position.

5. Hand loosen the adjustment locking nut around the screw approximately

one turn.

6. Press the off/on/start switch to the “START” (lower) position and release,

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 neces-

sary to start more than one grind cycle to obtain this sound.)

7. Make a mark with a pen on the decal to note the position of the arrow on the grind adjustment screw.

8. The following settings approximately correspond to the CBC recognized grinds. All are referenced from the

arrow position noted in #7.

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P581

P581

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 12 hash marks in a counterclockwise direction.

9. Hold the adjusting screw in its set position with a screwdriver while tightening the lock nut to a snug

position by hand. Slightly loosen the adjusting screw and retighten it to its prior position. The lock nut

should now be tight against the burr housing front cover.

Timer Adjustment

1. Unplug the grinder and remove the lower front inspection panel.

2. Determine the grind setting. (The factory setting is fine, to determine other settings, refer to the

previous section.)

3. Use the table on the next page to find approximate timer setting for the grind and amount of coffee desired.

DISPENSE TIME (Seconds)

I 0.0

DISPLAY

Increase Decrease

+

Readout will be displayed for 5 minutes.

Timer can only be adjusted

while readout is displayed.

WARNING

HAZARDOUS VOLTAGE

DISPENSE TIME

20

15

3

25

10

6

30

3.2
32

4

H

I

H

G

L

O

W

HIGH

LEFT

LOW

WARNING

HAZARDOUS VOLTAGE

(SECONDS)

11

RIGHT

22

20

15

3

25

10

6

30

3.2

.4.4

32

4

H

I

H

G

L

O

W

HIGH

LOW

UNPLUG GRINDER

BEFORE REMOVING!

DIGITAL TIMER

UNPLUG GRINDER

BEFORE REMOVING

ANALOG TIMER

P595

6