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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
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BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY 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 po
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CONTENTS Introduction ........................................................................................................................................3 User Notices .......................................................................................................................................3 Electrical Requirements ......................................................................................................................4 Operating Controls .......................
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ELECTRICAL REQUIREMENTS This grinder has an attached cord set and requires 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. OPERATING CONTROLS d c b e a 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. 41451.0001
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COFFEE GRINDING 1. Visually inspect the 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 until it stops. 4. Select batch size desired (e). 5. 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
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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 mat
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GLOSSARY GRIND OZ: ##.## Adjust current weight setting CENTER SW TARE Allows present weight on scale (-) DONE (+) using (-) and (+) buttons to be tared Allows adjustment of current SET GRIND TIME? OUNCES = #.## Shows current weight on scale time setting NO YES EXIT TARE Adjust current time setting us- Test read/write coils (Brew- TEST FREQUENCY? GRIND SEC: #.# ing (-) and (+) buttons WISE enabled grinders only) NO YES (-) DONE (+) Allows
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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 “M
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COMMUNICATING WITH THE GRINDER Press the hidden (copyright) button for 1 second “COFFEE NAME” PREV DONE NEXT SELECT COFFEE NO YES Pressing “PREV” scrolls to Pressing “NEXT” scrolls to the previous coffee name the next coffee name Press right hidden ENTER PASSWORD (copyright) button to 0 0 0 scroll to next screen Press right hidden “COFFEE NAME” (copyright) button to MODIFY SHOW NEXT scroll to next screen Press right hidden SET PASSWORD (copyright) but
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COMMUNICATING WITH THE GRINDER (Continued) from (A) The small batch size will From previous flash, press (-) or (+) to GRIND oz #.## page adjust grind weight. After (-) DONE (+) first batch size is set, FACTORY DEFAULT additional batch sizes can NO YES 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 ?
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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 Pressing any switch in this PRESS RIGHT mode will display the switch HIDDEN TO EXIT TEST FREQUENCY ? name in the grinder display. NO YES CENTER SW TARE TEST SCALE ? NO YES PLEASE WAIT TARE SWITCHES ENABL DISABLE After the funnel is “tared” PmBurrLBS
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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 WA
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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 per formed only by qualified ser vice person- nel. • All electronic components have 120 volts ac and low voltage dc potential on their terminal
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TROUBLESHOOTING (Continued) Problem Probable Cause Remedy Check that relay contacts close Grinder will not start (continued) 5. Relay when start switch is pressed. With a voltmeter, check that 120 6. Motor volts AC is present across L1 and L2 on the rear of the motor when the Start switch is pressed. If volt- age is present, and motor does not start, replace motor. Use “TEST SWITCHES?” menu un- Grinder will not shut off 1. STOP button der “SERVICE TOOLS?” menu in level 1 functions to test
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SCHEMATIC WIRING DIAGRAM G9WD-RH L1 N GRN BLK BLK BLK WHT M L1 L2 K1 N.O. BLK WHT BrewWISE Models only 1 2 FUNNEL SENSOR VIO VIO LINE K1 T1 LOAD 4 5 BUTTON BUTTON J1 J12 1 4 1 5 9 J7 BLK 1 GRN CONTROL CIRCUIT BOARD LOAD WHT RED TRANSDUCER 4 1 5 10 16 J13 A1 GRIND A2 STOP B1 HIDDEN BUTTON "LEFT" B2 HIDDEN BUTTON "RIGHT" C1 LARGE BATCH SIZE "LEFT" C2 MEDIUM BATCH SIZE "LEFT" C3 SMALL BATCH SIZE "LEFT" D1 "DIGITAL' LEFT HIDDEN BUTTON D2 "BREWER" CENTER HIDDEN D3 "CONTROL" RIGHT HIDDEN 120 VOLT
