Bunn G9 HD Operating & Service Manual
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Bunn G9 HD Operating & Service Manual

Bunn g9 hd: service manual
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OPERATING & SERVICE MANUAL
To obtain the Illustrated Parts Catalog, visit the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE,
and the quickest way to obtain the catalog. Contact Bunn-O-Matic Corporation at 1-800-286-6070 to obtain a paper
copy of the required Illustrated Parts Catalog mailed via U.S. Postal Service.
10171.0000M 04/07 © 1986 Bunn-O-Matic Corporation
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BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601
G9 HD
G9T HD
FAX: (217) 529-6644
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www.bunn.com

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Summary of Contents for Bunn G9 HD

  • Page 1 To obtain the Illustrated Parts Catalog, visit the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE, and the quickest way to obtain the catalog. Contact Bunn-O-Matic Corporation at 1-800-286-6070 to obtain a paper copy of the required Illustrated Parts Catalog mailed via U.S. Postal Service.

  • Page 2: Table Of Contents

    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.

  • Page 3: User Notices

    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 20545-0000D 01/04 © 1990 Bunn-O-Matic Corporation #20545.0000 CARAFE Page 3 P1300 10171 042707...

  • Page 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 windows with any abrasive mate- rial. Regular cleaning will keep your grinder looking new for years.
  • Page 5 ADJUSTMENTS (cont.) Burr Adjustment (cont.) Make a mark with a pen on the decal to note the position of the arrow on the grind adjustment screw. The following settings approximately correspond to the CBC recognized grinds. All are referenced from the arrow position noted in step 7. FINE GRIND: Rotate the adjusting screw 7 hash marks in a counterclockwise direction.

  • Page 6: Troubleshooting

    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 per- sonnel.
  • Page 7 TROUBLESHOOTING (cont.) Problem Grinder will not start. (cont.) Grinder will not shut off. Grinder starts, but will not dis- pense. Incorrect amount of coffee. Incorrect coffee grind dispensed. Probable Cause 4. Timer 5. Relay 6. Motor 1. Off/On/Start switch 2. Timer 3. Relay 1.

  • Page 8: Service

    SERVICE This section provides procedures for testing and replacing various major components used in this grinder should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any problem. WARNING - Inspection, testing, and repair of electri- cal equipment should be performed only by qualified service personnel.
  • Page 9 SERVICE (cont.) Motor F IN F IN 11191.0001 IN JU S AN FI NG T OF E OP Location: The motor is located in the upper wrapper under the hopper. Test Procedure: Remove the hole plug located on the right side of the housing.
  • Page 10 SERVICE (cont.) Motor (cont.) 1. Adjusting Screw Locknut 2. Adjusting Screw 3. Burr Housing Cap 4. Rotor Cup 5. Shear Plate Removal and Replacement - GRIND CHAMBER Refer to the illustration above and remove the two 1/4”-20, hex head screws holding the burr housing cap(3) to the burr housing;...
  • Page 11 SERVICE (cont.) Off/On/Start Switch CARAFE Location: The Off/On/Start switch is centered in the housing above the upper front inspection panel. Test Procedure: 1. Disconnect the grinder from the power supply. 2. Remove the black wire from the switch. 3. Check for continuity across the black wire from the Off/On/Start switch and the left blade of the cordset connector (see illustration below).
  • Page 12 SERVICE (cont.) If continuity is not present as described, replace the switch. Removal and Replacement: Remove all the wires from the switch termi- nals. Compress the clips inside the housing and gently push the switch through the opening. Push the new switch into the opening and spead the clips to hold the switch in the housing.
  • Page 13 SERVICE (cont.) Timer Single set timer shown Multi set timer (Urn/Carafe) similar Location: The timer is located on the timer bracket in the grinder base. The bracket can be removed by loosen- ing the two 8-32 screws beneath the timer dial(s). Test Procedure: Disconnect the grinder from the power supply.

  • Page 14: Wiring Diagram

    OPTIONAL KEY SW 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ SCHEMATIC WIRING DIAGRAM WHI/RED WHI/YEL WHI/ORA 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ 10215.0000C 4/97 © 1987 BUNN-O-MATIC CORPORATION WHI/RED WHI/GRN TIMER 10173-0000F 4/91 © 1987 BUNN-O-MATIC CORPORATION G9-URN/CARAFE WHI/RED WHI/RED WHI/GRN TIMER Page 14 GREEN WHI/RED WHI/BLU K1 N.O.
  • Page 15 SCHEMATIC WIRING DIAGRAM G9A HD WHI/RED WHI/YEL WHI/ORA 200 VOLTS AC TIMER 2 WIRE SINGLE PHASE 50 HZ 10187-0000B 11/97 © 1987 BUNN-O-MATIC CORPORATION SCHEMATIC WIRING DIAGRAM G9A HD POWER INDICATOR LIGHT WHI/RED WHI/RED WHI/YEL WHI/ORA 200 VOLTS AC TIMER 2 WIRE SINGLE PHASE 50 HZ 10187.0001B 11/97 © 1997 BUNN-O-MATIC CORPORATION WHI/RED WHI/RED WHI/GRN RED/BLK WHI/RED WHI/RED...
  • Page 16 SCHEMATIC WIRING DIAGRAM G9 WHI/RED WHI/YEL WHI/ORA OPTIONAL KEY SW 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ 10388-0000B 12/88 © 1988 BUNN-O-MATIC CORPORATION SCHEMATIC WIRING DIAGRAM G9 WHI/RED WHI/YEL WHI/ORA OPTIONAL KEY SW WHI/ORA 120 VOLTS AC 2 WIRE...

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