Bunn FMD-1 FMD-2 service manual Hopper Lid, Retainer Clip Hopper Assembly, Retainer Clip Ing panel

Page 14

SERVICE

AUGER DRIVE COMPONENTS - FMD-1 (CONT.)

5.Check the voltage across the positive (red wire) terminal and the negative (black wire) terminal on the auger motor with a voltmeter. With the rinse/ run switch in the run (lower) position press and hold the dispense switch. Connect the dispenser to the power supply. After a .6 second delay the indication must be 4.0 to 24.5 volts dc.

If voltage is present as described, the auger motor drive is operating properly. If auger does not turn, replace the auger motor.

If voltage is not present as described, replace the auger hopper drive board.

Removal, Cleaning and Replacement

Hopper & Auger

1.Open the dispenser door and raise the top front cover.

2.Lift the hopper assy (17) over the pins (16) on hopper support plate (12) and slide hopper as- sembly out the front of the dispenser.

3.Remove hopper lid (1) and empty product.

4.Pull off the ejector elbow (15).

5.Remove retainer clip (11) and washer (10) from the bottom of the hopper base (9).

6.Remove whipper shaft (3), wiper blade (4) and wiper drive gear (5) from the hopper base (9).

7.Remove auger wire (14) by pulling it out the front of the hopper base (9).

8.On Early models, remove auger drive shaft (13) by removing the retaining clip (6) from auger drive shaft. On Late models, remove the auger drive bracket (7) by unscrewing left hand threads from the auger shaft (13).

9.Slide spacer (8) and auger drive shaft bracket (7) off of the auger drive shaft (13).

10.Remove auger drive shaft (13) from hopper base

(9).

11.Wash components in a mild solution of dish deter- gent using a bristle brush when needed.

12.Rinse and dry each item thoroughly.

13.Check for damaged or broken components, re- place any if necessary and reassemble hopper assembly.

14.Install hopper assy (17) in the dispenser by sliding hopper assy on the hopper support plate (12) until the slot in the rear of the hopper base (9) seats against the pins (16) in the hopper support plate (12).

 

1

 

 

2

 

 

 

3

 

 

4

 

7

5

 

 

13

 

 

14

 

8

15

 

9

 

 

10

 

 

11

 

 

6

 

 

Early Models

 

 

 

17

 

 

12

 

 

16

18

19 20 21

 

 

 

P1667

FIG. 2 AUGER DRIVE & HOPPER DISASSEMBLY

1.

Hopper Lid

12.

Hopper Support Plate

2.

Hopper

13.

Auger Drive Shaft

3.

Wiper Shaft

14.

Auger Wire

4.

Wiper Blade

15.

Ejector Elbow

5.

Wiper Drive Gear

16.

Hopper Locating Pins

6.

Retainer Clip

17.

Hopper Assembly

7.

Auger Drive Bracket

18.

Auger Motor Bracket

8.

Spacer

19.

Auger Motor

9.

Hopper Base

20.

Dust Seal

10.

Washer

21.

Auger Motor Mount-

11.

Retainer Clip

 

ing panel

14

29112 011906

 

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Contents FMD-1 FMD-2 User Notices WarrantyIntroduction FMD-1 FMD-228368.0001 00656.0000FMD-1 only Electrical HOOK-UP Initial SET-UPElectrical Requirements Plumbing RequirementsLiquid Level Control Rinse Timer FMD-2 onlyInitial Fill & Heat Running a Rinse SequenceHopper Motor Speed Adjustment FMD-1 CleaningAdjustments Cold Beverage SET-UP Optional FMD-2 onlyHopper Motor Speed Programing FMD-2 Draining the HOT Water TankProduct will not dispense TroubleshootingProblem Probable CauseProbable Cause Remedy Problem Probable Cause Problem Probable Cause Remedy Refer to Service Lamp, see page 29 for lamp replacement Dispenser is making unusualContents ServiceComponent Access Auger Drive Components FMD-1Spacer Auger Motor Hopper Base Dust Seal Washer Retainer Clip Hopper AssemblyHopper Lid Retainer Clip Ing panelAuger Drive Components FMD-2 Auger Drive Components FMD-1To the rear of the auger motor mounting panel Hopper Hopper Assy Hopper Dust Seal Auger Drive Components FMD-2Bushing Panel Auger Drive Shaft Remove auger motor and discard Disconnect the wires from the auger motor 16 to be removedRemove dust seal 17 from auger motor Ballast FMD-1 & FMD-2 LocationControl Board FMD-2 only Thermostat TerminalsService Dispense Switch Dispense Switchs FMD-1 & FMD-2 Dispense Switch Terminals P1449 FAN FMD-1 & FMD-2FMD-2 Frother and Whipper Motor FMD-1 shown & FMD-2 Whipper Motor Terminals P1221Hopper Drive Board FMD-1 only Hopper Drive BoardHopper Drive Board FMD-1 only Hopper Drive Board TerminalsLamp Replacement Refer to Fig Door Assy Upper Panel Lamp Holders Lower PanelLamp Starter and Socket Refer to Location Lamp Replacement Refer toAs assembly Level Control Board and Level Probe FMD-1 onlyReconnect the violet wire to terminal Level Control Board and Level Probe FMD-1 onlyRINSE/RUN Switch FMD-1 LocationBLK from Main Harness WHI/BRN to YEL to Control Board J2-3 RINSE/RUN Switch FMD-2WHI/RED to Solenoid Valve Cold Water OPTIONALFMD-2 only Cold Water Solenoid ValveFMD-1 Solenoid Valve Dispense FMD-1 & FMD-2 Solenoid Valve Inlet FMD-1 & FMD-2 Tank HeaterMain Harness Thermostat Tank Heater Switch FMD-1 shown & FMD-2Tank Heater FMD-1 shown & FMD-2 Transformer FMD-2 only WHI/GRN T7 WHI/BLK T12Schematic Wiring Diagram FMD-1 BLU WHISchematic 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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