Bunn FMD-1 FMD-2 service manual Hopper Motor Speed Programing FMD-2, Draining the HOT Water Tank

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HOPPER MOTOR SPEED PROGRAMING (FMD-2)

The hopper dispense rate is preset at the factory. With 22 tooth gear and auger wire the preset dispense rate is approximately 3 to 5 grams per second. With 32 tooth gear and auger wire the preset dispense rate is approximately 5 to 7 grams per second. The hopper dispense rate can be adjusted to a range of dispense rates from approximately

1.5 to 12 grams per second, as follows:

1.Place the rinse/run switch in the center (program) position.

2.Place the increase/decrease switch in the desired (increase or decrease) position.

3.Press and release the dispense switch for the chamber you wish to adjust. Each time the dispense switch is pressed, the rinse L.E.D. will flash, and the motor speed for that hopper will be increased/decreased by approximately 2 1/2%.

4.Return the rinse/run switch to the run position after hopper motor speed adjustments are complete.

DRAINING THE HOT WATER TANK

CAUTION - The dispenser must be disconnected from the power source throughout these steps.

1.Disconnect the dispenser from the power source.

2.Open front door and place tank heater switch in the “OFF” (upper) position.

3.Shut-off and disconnect the incoming water supply.

4.Remove the top panel.

5.Gently remove one of the grommets from the tank lid.

6.Insert a tube to the bottom of the tank and syphon ALL of the water out.

NOTE - The dispenser must be refilled using the INITIAL FILL & HEAT steps before reconnecting to the power source.

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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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