Bunn FPG-2, LPG-2, G9WD, G2 TRIFECTA, G9-2T DBC service manual Timer Model G9, Timer Terminals

Page 48

SERVICE (Cont.)

Timer (Model G9)

 

MINUTES-MATICVAC

 

 

-O

120

 

BUNN -

 

 

P/N

2620

 

 

Single set timer shown

 

 

 

Multi set timer (Urn/Carafe) similar

 

FIG 50 TIMER

P1312

 

Location:

The timer is located on the timer bracket in the grinder base. The bracket can be removed by loosening the two 8-32 screws beneath the timer dial(s).

Test Procedure:

1.Disconnect the grinder from the power supply.

2.Check the voltage across terminals TL1 & TL2 with a voltmeter when the “Off/On/Start switch is placed in the “START” (right) position and released. Con- nect grinder to the power supply. The indication must be:

(a)120 volts ac for two wire 120 volt models.

(b)240 volts ac for two wire 240 volt models.

3.Disconnect the grinder from the power supply.

If voltage is present as described, proceed to step 4.

6.Check the voltage across terminals TL1 and TL4 with a voltmeter when the Off/On/Start switch is placed in the “START” (right) position and released. Connect grinder to the power supply. The indication must be:

(a)120 volts ac for two wire 120 volt models.

(b)240 volts ac for two wire 240 volt models.

7.Disconnect the grinder from the power supply.

If voltage is present as described, the timer is operating properly. Refer to the Adjustments section to vary the amount dispensed.

If voltage is not present as described, replace the timer.

Removal and Replacement:

1.Remove all wires from the timer terminals.

2.Remove the four 6-32 screws and nuts holding the circuit board to the timer bracket.

3.Remove the two 6-32 screws and nuts holding the dial plate to the timer bracket.

4.Install the new dial plate and circuit board to the timer bracket.

5.Refer to the illustration below when reconnecting the wires.

6.Refer to the Adjustments section to vary the amount dispensed.

WHI/RED to Relay N.O.

WHI/RED to

Off/On/Start Switch

If voltage is not present as described, refer to the Wiring Diagram and check the grinder wiring harness.

4.Remove the white/orange and white/yellow wires from terminals TL3 & TL5.

5.Check for continuity across the white/orange and white/yellow wires when the Off/On/Start switch is placed in the “START” (right) position.

2

3

 

 

 

 

 

 

 

 

4

 

-

 

5

P/NBUNNMINUTESO-

 

 

 

2620- MATIC

 

 

120

VAC

WHI to Cordset (120 v) RED/BLK to Cordset (240 v)

WHI/ORA to

Off/On/Start Switch

WHI/GRN to Relay Coil

WHI/YEL to

Off/On/Start Switch

If continuity is present as described, reconnect the white/orange wire to terminal TL3 and the white/yellow wire to terminal TL5, and proceed to step 6.

If continuity is not present as described, refer to the Wir- ing Diagram and check the grinder wiring harness.

Single set timer shown

Multi set timer (Urn/Carafe) connections are the same

P1313

FIG 51 TIMER TERMINALS

48

41545 122209

 

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Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents Recommended Daily Cleaning Capacity ChartIntroduction Housing. Figure G9 WD Packaging & Shim RemovalModel G9WD Model G9-2Model G9 Models G1, G2, G3 & G2 trifectaModels LPG, LPG-2E Power ON/OFF Pad e 100V Models Operating Controls Model MHGBatch Selector Switch Pressing the pad allows programming access seePressing Grind initiates a timed grind cycle Hopper/Batch Selector Pads dProblem Probable Cause Remedy Switch for testing proceduresProcedures Volts for 230 volt modelsTroubleshooting Placement procedures HoppersFrom hopper Supplies of whole bean coffeeProblem Probable Cause Remedy Component Access Component LocationsService BAG Sensor Switch Models G1, G2, G3 orCUP 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 DechafferMotor Models G9, G9-2, MHG Franklin MotorMarathon Motor Replace if excessively worn or damaged Remove and inspect stationary burr9 for wearSnubber Models G9, G9-2, MHG LocationGrinder Scale Model G9WD only CalibrationLevel 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 wiresOFF/ON/START Switch Grinders with Digital TimerGrinders 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 Model FPG Potentiometer TerminalsRectifier Models G1 MD, FPG-2 DBC RectifierTest Procedure Disconnect the grinder from the power supply Relay Early Model G-9Relay 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 TerminalsTimer Model G9-2 Digital TimerAnalog Timer TimerControl Board Model MHG Refer to when connecting wires Control BoardControl 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 MOV1Triac MAP for FPG-2 DBC and G9-2 DBC Controls Left Gate @ J1-1Controls Relay @ J1-2 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 Wire + Gnd Single PHASE, 50/60HZVolts 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 Volts AC Wire Single Phase 60 HZVolts 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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