Bunn FMD-1 FMD-2 service manual Ballast FMD-1 & FMD-2, Location

Page 19

SERVICE (cont.)

BALLAST - FMD-1 & FMD-2 (cont.)

Location

FMD-1

The front door lamp ballast is located behind the front access panel on the left front side of the com- ponent bracket.

FMD-2

The front door lamp ballast is located behind the front access panel on the left rear side of the com- ponent bracket.

Test Procedure

1.Disconnect the dispenser from the power source.

2.Disconnect the two black lead on the ballast from the main harness.

3.Check for continuity between the two black leads on the ballast.

If continuity is present as described the ballast is operating properly.

If continuity is not present as described, replace the ballast.

Removal and Replacement

FMD-1

1.Disconnect the wires from the ballast.

2.Remove the two #8-32 screws securing the bal- last to the component bracket.

3.Remove and discard ballast.

4.Using two #8-32 screws install new ballast on the component bracket.

5.Refer to the Fig. 9 when reconnecting the wires. FMD-2

1.Loosen the two #8-32 screws securing the com- ponent bracket to the dispenser housing base.

2.Pull component bracket out the front of the dis- penser far enough so the leads on the ballast can be disconnected from the main wiring harness and the door interconnect harness.

3.Remove the two #8-32 screws securing the ballast the rear of the component bracket.

4.Remove and discard ballast.

5.Install new ballast on the rear of the component bracket and secure with two #8-32 screws.

6.Refer to Fig. 9 and reconnect the wires.

7.Place the component bracket into position and

tighten the two #8-32 screws securing the compo- nent bracket to the dispenser housing base.

BLK to BLK

 

from Main

 

Wiring Harness

 

BLK to BLU from

 

Main Harness

 

FIG. 9 BALLAST TERMINALS

P1447

 

CONTROL THERMOSTAT - FMD-1 & FMD-2

 

FIG. 10 CONTROL THERMOSTAT

P1665

 

Location

 

The control thermostat is located under the front tank mounting bracket on the upper right side of the dispenser housing.

Test Procedure

1.Disconnect the dispenser from the power source.

2.Disconnect the black wire of the control thermo- stat from the black lead from the limit thermostat.

3.Remove bulb from the tank.

4.Check the voltage across black wire on the control thermostat and the white or red wire on the tank heater with the tank heater switch in the “ON” lower position with a voltmeter. Connect the dis- penser to the power source. The indication must be:

19

29112 101598

 

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Contents FMD-1 FMD-2 FMD-1 FMD-2 WarrantyIntroduction User NoticesFMD-1 only 00656.000028368.0001 Plumbing Requirements Initial SET-UPElectrical Requirements Electrical HOOK-UPRunning a Rinse Sequence Rinse Timer FMD-2 onlyInitial Fill & Heat Liquid Level ControlCold Beverage SET-UP Optional FMD-2 only CleaningAdjustments Hopper Motor Speed Adjustment FMD-1Draining the HOT Water Tank Hopper Motor Speed Programing FMD-2Probable Cause TroubleshootingProblem Product will not dispenseProbable Cause Remedy Problem Probable Cause Problem Probable Cause Remedy Dispenser is making unusual Refer to Service Lamp, see page 29 for lamp replacementAuger Drive Components FMD-1 ServiceComponent Access ContentsRetainer Clip Ing panel Retainer Clip Hopper AssemblyHopper Lid Spacer Auger Motor Hopper Base Dust Seal WasherTo the rear of the auger motor mounting panel Auger Drive Components FMD-1Auger Drive Components FMD-2 Hopper Hopper Assy Bushing Panel Auger Drive Shaft Auger Drive Components FMD-2Hopper Dust Seal Remove dust seal 17 from auger motor Disconnect the wires from the auger motor 16 to be removedRemove auger motor and discard Location Ballast FMD-1 & FMD-2Thermostat Terminals Control Board FMD-2 onlyService Dispense Switch Dispense Switchs FMD-1 & FMD-2 FAN FMD-1 & FMD-2 Dispense Switch Terminals P1449FMD-2 Whipper Motor Terminals P1221 Frother and Whipper Motor FMD-1 shown & FMD-2Hopper Drive Board Hopper Drive Board FMD-1 onlyHopper Drive Board Terminals Hopper Drive Board FMD-1 onlyDoor Assy Upper Panel Lamp Holders Lower Panel Lamp Replacement Refer to FigLevel Control Board and Level Probe FMD-1 only Lamp Replacement Refer toAs assembly Lamp Starter and Socket Refer to LocationLevel Control Board and Level Probe FMD-1 only Reconnect the violet wire to terminalLocation RINSE/RUN Switch FMD-1WHI/RED to RINSE/RUN Switch FMD-2BLK from Main Harness WHI/BRN to YEL to Control Board J2-3 Cold Water Solenoid Valve Solenoid Valve Cold Water OPTIONALFMD-2 onlyFMD-1 Solenoid Valve Dispense FMD-1 & FMD-2 Tank Heater Solenoid Valve Inlet FMD-1 & FMD-2Tank Heater FMD-1 shown & FMD-2 Tank Heater Switch FMD-1 shown & FMD-2Main Harness Thermostat WHI/GRN T7 WHI/BLK T12 Transformer FMD-2 onlyBLU WHI Schematic Wiring Diagram FMD-1Schematic Wiring Diagram FMD-2

FMD-1 FMD-2 specifications

The Bunn FMD-1 and FMD-2 models represent a significant advancement in the realm of coffee brewing equipment, catering to the demands of both commercial establishments and serious coffee enthusiasts. These machines are designed to efficiently brew high-quality coffee while minimizing operational complexity.

The Bunn FMD-1 is a single brewer, while the FMD-2 features dual brewing capabilities. This distinction allows the FMD-2 to meet higher coffee volume demands, making it an ideal choice for bustling cafes or restaurants where efficiency is paramount. Both models are engineered with a robust stainless steel construction, ensuring durability and longevity in high-traffic environments.

One standout feature of both models is the infusion technology. This proprietary system enhances the extraction process, allowing for optimal flavor development. The machines utilize a programmable brewing timeline, which provides users with a high level of control over the brewing variables such as time and temperature. This leads to a customizable brewing experience tailored to specific coffee blends or personal taste preferences.

Additionally, these brewers are equipped with an integrated hot water faucet, offering convenience for making tea, hot chocolate, or even instant soup. This multifunctionality improves workflow in busy kitchens, as it eliminates the need for separate hot water dispensers.

The FMD series is also designed with user-friendly interfaces. The digital display provides clear, intuitive information about the brewing process, including brew progress and maintenance alerts. This makes it easy for operators to monitor and manage the machine, ensuring consistency and quality in every cup.

Moreover, both models are designed for quick and efficient cleaning. The removable brewing components facilitate maintenance, which is crucial in a commercial setting where hygiene and equipment uptime are critical.

In terms of capacity, the FMD-1 brews up to 3.8 gallons per hour, while the FMD-2 can produce an impressive 7.5 gallons per hour, demonstrating their suitability for high-volume service.

Overall, the Bunn FMD-1 and FMD-2 models embody the perfect blend of technology, efficiency, and user-centric design, making them a valuable addition to any coffee service operation. Their ability to deliver consistent, high-quality coffee with ease is sure to enhance the customer experience and streamline operations simultaneously.
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