Bunn G2 TRIFECTA, G9WD Problem Probable Cause Remedy, Volts for 230 volt models, Tion, Procedures

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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 performed only by qualified service personnel.

•All electronic components have ac voltage and dc voltage potential on their terminals. Shorting of ter- minals or the application of external voltages may result in board failure.

•Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent.

If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.

•Make certain that all electrical connections are tight and isolated.

WARNING

•Exercise extreme caution when servicing electrical equipment.

•Turn power OFF when servicing, except when electrical tests are specified.

•Follow recommended service procedures.

•Replace all protective shields or safety notices.

Problem

Probable Cause

Remedy

Grinder will not start.

1. No power or incorrect voltage

(A) Plug-in the grinder.

 

 

(B) Check the voltage at the wall

 

 

outlet with a voltmeter. It must be

 

 

120 volts ac for 120 volt models,

 

 

100 volts for 100 volt models, and

 

 

230 volts for 230 volt models.

 

2. Off/On/Start switch

(A) Momentarily press the Off/On/

 

 

Start switch to the “START” posi-

 

 

tion.

 

 

(B) Refer to Service - Off/On/Start

 

 

switch for testing procedures.

3.Circuit Breaker (Not applicable on Model LPG with capacitor)

Press the “Reset” button, located on rear of the grinder. Listen carefully for a “click”. This resets the motor protection circuit and indicates that an overload may have been encoun- tered by the motor. (An overload can occur when something other than coffee is inserted into the hopper for grinding). Refer to Service - Circuit Breaker for testing procedure.

4. Timer

Refer to Service - Timer for testing

 

procedures.

10

41545 122209

 

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Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents Capacity Chart Recommended Daily CleaningIntroduction Housing. Figure G9 WD Packaging & Shim RemovalModel G9WD Model G9-2Models G1, G2, G3 & G2 trifecta Model G9Models LPG, LPG-2E Power ON/OFF Pad e 100V Models Operating Controls Model MHGPressing Grind initiates a timed grind cycle Batch Selector SwitchPressing the pad allows programming access see Hopper/Batch Selector Pads dProcedures Problem Probable Cause RemedySwitch for testing procedures Volts for 230 volt modelsTroubleshooting From hopper Placement proceduresHoppers Supplies of whole bean coffeeProblem Probable Cause Remedy Component Access Component LocationsBAG Sensor Switch Models G1, G2, G3 or ServiceCUP Sensor Switch Model G2 Trifecta Remove the electrical access panel at the rear of the motor AC Motor and Grind ChamberInstall shear plate Install burr rotor cup AC Motor and Grind ChamberGrind Chamber Components DC Motor and Grind Chamber G1MD only DC Motor and Grind Chamber G1MD only DC Motor TerminalsMotor and Grind Chamber Removal Motor Models LPG & FPG MotorSolenoid and Gates Install load disc 11 flat side towards rotor ROTOR/AUGER, Burrs and Motor CoverDechaffer Models LPG & FPG DechafferFranklin Motor Motor Models G9, G9-2, MHGMarathon Motor Replace if excessively worn or damaged Remove and inspect stationary burr9 for wearSnubber Models G9, G9-2, MHG LocationCalibration Grinder Scale Model G9WD onlyLevel 2 Functions Capacitor Model LPG only Capacitor TerminalsCircuit Breaker Models LPG, LPG-2E, FPG, FPG-2 DBC Circuit BreakerHopper Selector Switch Model LPG-2E only Viewed from rearHopper Selector Switch Model G9-2 only Refer to Fig. below when reconnecting the wiresGrinders with Analog Timer OFF/ON/START SwitchGrinders with Digital Timer OFF/ON/START Switch TerminalsRefer to the illustration below when reconnecting the wires Urn/Carafe Switch Models G9, G9-2URN/CARAFE Switch Terminals Batch Selector Switch Batch Selector Switch Model FPGBatch Selector Switch Terminals Potentiometer Model FPG Potentiometer TerminalsRectifier Models G1 MD, FPG-2 DBC RectifierRelay Test Procedure Disconnect the grinder from the power supplyRelay Early Model G-9 Relay TerminalsRemove the white/red wires from relay contacts 7 Relay Models G1, G2, G3, G2 trifectaRelay Early Models Late ModelsRelay Models MHG, FPG-2 DBC, Late Model G-9, G9-2, G9-2 DBC Hopper Slide Plates Slide plates must always remain flat for proper operationHopper Slide Plates Models MHG Solenoids Models MHG, FPG-2 DBC, LPG-2, G9-2, G9-2 DBC SolenoidsTimer Model LPG-2E Place the hopper selector switch in the left posi- tionTimer Models LPG, FPG Timer Model G9 Timer TerminalsAnalog Timer Timer Model G9-2Digital Timer TimerControl Board Model MHG Control Board Refer to when connecting wiresControl Board Terminals Membrane Switches Model MHG only Membrane Switch Membrane SwitchNuetral EMI Filter Models FPG & FPG-2 EMI Filter TerminalsFunnel Sensing Coil Models MHG & G9-2 DBC Memory Clock Board Model MHG Disconnect the harness from the memory clock boardDisplay Board Model MHG Triac MAP for MHG MOV1Controls Relay @ J1-2 Triac MAP for FPG-2 DBC and G9-2 DBCControls Left Gate @ J1-1 Controls Right Gate @ J1-3G9-2 DBC, G9-2T DBC W/SMART Funnel 50/60 HZRelay Coil WHI/GRN Schematic Wiring Diagram G9-2TB DBC W/SMART Funnel 50 HZSchematic Wiring Diagram MHG Single PHASE, 50/60HZ Wire + GndVolts AC, 120 Volts AC Volts AC Wire Single Phase 60 HZWiring Diagrams Wiring Diagrams Schematic Wiring Diagram LPG Schematic Wiring Diagram Wiring Diagrams Schematic Wiring Diagram LPG W/CapacitorWiring Diagrams Schematic Wiring Diagram LPG-B Schematic Wiring Diagram G1, G2, G3 & G2 trifecta 60 HZ Volts AC Wire Single PhaseVolts AC Schematic Wiring Diagram G9A HD 50 HZBLK WHI/RED WHI/YEL WHI/BLU SCHEMATICWIRINGDIAGRAMG9-2A HD Wiring Diagrams FPG Wiring Diagrams 60 HZFPG-2A DBC
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FPG-2, G9-2T DBC, G9-2, G2 TRIFECTA, G9 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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