Bunn G9WD, LPG-2, G9-2T DBC, G1, FPG-2 service manual Display Board Model MHG

Page 57

SERVICE (Cont.)

Display Board (Model MHG)

FIG 66 DISPLAY BOARD

Location:

The display board is located inside the hopper housing behind the membrane switch.

Test Procedure:

1.Press and hold the upper right hidden button to enter the Programming menus.

2.Scroll to SERVICE TOOLS menu, and press the button under "YES".

3.Press "YES" under TEST OUTPUTS and proceed, through the menus to test the left and right gates, and the grinder motor.

4.Then scroll to the TEST SWICHES menu and press the button under "YES". Test each button on the conttrol panel, the button pressed will be displayed on the screen.

Removal and Replacement

1.Disconnect the grinder from the power supply.

2.Remove the two 6-32 screws attaching the mem- brane switch bezel to the hopper housing.

3.Tilt the bezel assembly forward.

4.Remove the four 8-32 screws attaching the board cover bracket to the switch bezel and remove the bracket.

5.Disconnect the wiring harness from the display board.

6.Remove the four 8-32 screws attaching the display board to the switch bezel and remove the board.

To Control Board J8

 

 

 

BLU GRN YEL ORN

 

 

J10-1

J10-4

 

 

DISPLAY BOARD

J9-1

J9-5

J9-10

J9-15

1

 

 

16

J9-1

 

 

16

FIG 67 DISPLAY BOARD TERMINALS

57

41545 122209

 

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Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisBUNN-O-MATIC Commercial Product Warranty Contents Recommended Daily Cleaning Capacity ChartIntroduction G9 WD Packaging & Shim Removal Housing. FigureModel G9-2 Model G9WDModel G9 Models G1, G2, G3 & G2 trifectaModels LPG, LPG-2E Operating Controls Model MHG Power ON/OFF Pad e 100V ModelsPressing the pad allows programming access see Batch Selector SwitchPressing Grind initiates a timed grind cycle Hopper/Batch Selector Pads dSwitch for testing procedures Problem Probable Cause RemedyProcedures Volts for 230 volt modelsTroubleshooting Hoppers Placement proceduresFrom hopper Supplies of whole bean coffeeAccompnting the grinder Problem Probable Cause RemedyService Component AccessComponent Locations Service BAG Sensor Switch Models G1, G2, G3 orCUP Sensor Switch Model G2 Trifecta AC Motor and Grind Chamber Remove the electrical access panel at the rear of the motorAC Motor and Grind Chamber Install shear plate Install burr rotor cupGrind Chamber Components DC Motor and Grind Chamber G1MD only DC Motor Terminals DC Motor and Grind Chamber G1MD onlyMotor and Grind Chamber Removal Motor Motor Models LPG & FPGSolenoid and Gates ROTOR/AUGER, Burrs and Motor Cover Install load disc 11 flat side towards rotorDechaffer Dechaffer Models LPG & FPGMotor Models G9, G9-2, MHG Franklin MotorMarathon Motor Remove and inspect stationary burr9 for wear Replace if excessively worn or damagedLocation Snubber Models G9, G9-2, MHGGrinder Scale Model G9WD only CalibrationLevel 2 Functions Capacitor Terminals Capacitor Model LPG onlyCircuit Breaker Circuit Breaker Models LPG, LPG-2E, FPG, FPG-2 DBCViewed from rear Hopper Selector Switch Model LPG-2E onlyRefer to Fig. below when reconnecting the wires Hopper Selector Switch Model G9-2 onlyGrinders with Digital Timer OFF/ON/START SwitchGrinders with Analog Timer OFF/ON/START Switch TerminalsUrn/Carafe Switch Models G9, G9-2 Refer to the illustration below when reconnecting the wiresURN/CARAFE Switch Terminals Batch Selector Switch Model FPG Batch Selector SwitchBatch Selector Switch Terminals Potentiometer Terminals Potentiometer Model FPGRectifier Rectifier Models G1 MD, FPG-2 DBCRelay Early Model G-9 Test Procedure Disconnect the grinder from the power supplyRelay Relay TerminalsRelay Models G1, G2, G3, G2 trifecta Remove the white/red wires from relay contacts 7Early Models Late Models RelayRelay Models MHG, FPG-2 DBC, Late Model G-9, G9-2, G9-2 DBC Slide plates must always remain flat for proper operation Hopper Slide PlatesHopper Slide Plates Models MHG Solenoids Solenoids Models MHG, FPG-2 DBC, LPG-2, G9-2, G9-2 DBCPlace the hopper selector switch in the left posi- tion Timer Model LPG-2ETimer Models LPG, FPG Timer Terminals Timer Model G9Timer Timer Model G9-2Control Board Model MHG Refer to when connecting wires Control BoardControl Board Terminals Membrane Switches Model MHG only Membrane Switch Membrane SwitchNuetral EMI Filter Terminals EMI Filter Models FPG & FPG-2Funnel Sensing Coil Models MHG & G9-2 DBC Disconnect the harness from the memory clock board Memory Clock Board Model MHGDisplay Board Model MHG MOV1 Triac MAP for MHGControls Left Gate @ J1-1 Triac MAP for FPG-2 DBC and G9-2 DBCControls Relay @ J1-2 Controls Right Gate @ J1-3Wiring Diagrams Wire Single Phase50/60 HZ Relay Coil WHI/GRN 50 HZ Volts AC Wire Single PhaseSchematic Wiring Diagram MHG Wire + Gnd Single PHASE, 50/60HZVolts AC, 120 Volts AC 60 HZ Volts AC Wire Single PhaseWiring Diagrams Wiring Diagrams Schematic Wiring Diagram LPG Wiring Diagrams Schematic Wiring Diagram LPG-A LPG W/Capacitor Wiring Diagrams Schematic Wiring DiagramWiring Diagrams Schematic Wiring Diagram LPG-B Schematic Wiring Diagram G1, G2, G3 & G2 trifecta Volts AC Wire Single Phase 60 HZVolts AC 50 HZ Schematic Wiring Diagram G9A HDBLK WHI/RED WHI/YEL WHI/BLU SCHEMATICWIRINGDIAGRAMG9-2A HD Wiring Diagrams Fpga FPG60 HZ Wiring DiagramsFPG-2A DBC
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FPG-2, G1, FPG, G9-2T DBC, G9-2 specifications

Bunn has established itself as a leader in the coffee and beverage equipment industry, providing advanced solutions that cater to a variety of needs. Among its notable products are the Bunn LPG-2, G9, FPG-2, G9-2, and G9WD, which showcase the company’s commitment to innovation, quality, and efficiency.

The Bunn LPG-2 is an ideal solution for high-volume coffee production. This model features a two-watt heating element that ensures rapid brew cycles and consistent temperature control. With a sleek design and user-friendly interface, the LPG-2 simplifies the brewing process while delivering exceptional coffee quality. Its large capacity enables institutions to serve multiple customers simultaneously, making it suitable for restaurants, cafes, and hotels.

The G9 series, particularly the G9 and G9-2, are known for their versatility and robust performance. Both models come equipped with a stainless steel hot water faucet, allowing users to draw hot water for various applications such as tea or soup preparation. The G9 model is designed for single-brew operation, while the G9-2 accommodates dual brewing, making it an efficient choice for those needing to meet demand quickly. Additionally, both G9 models have advanced brewing technology to ensure optimal flavor extraction.

The FPG-2 model stands out for its precision and control over brewing parameters. It features a touchscreen interface that allows users to customize brew strength and temperature, ensuring that each cup meets individual preferences. The FPG-2 is also remarkably user-friendly, which is essential in a busy environment. Its dual-brew functionality allows it to serve two different coffee options simultaneously, enhancing service efficiency.

The G9WD is designed for those who require the ultimate convenience. Featuring a built-in water line connection, the G9WD minimizes the need for manual refilling, ensuring a continuous supply of fresh coffee. This model is equipped with a programmable timer, allowing users to set brew cycles in advance, which can be a significant time-saver during peak hours.

In summary, the Bunn LPG-2, G9, FPG-2, G9-2, and G9WD offer a range of features that cater to various coffee brewing needs. With advanced technologies, efficient designs, and user-centric interfaces, these models are engineered to deliver consistent, high-quality beverages, making them essential tools for any coffee-focused establishment. Whether for high-volume brewing or versatile beverage options, Bunn's offerings stand out in the competitive landscape of beverage equipment.
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