Bunn FMD-1 FMD-2 service manual

Page 25

SERVICE (cont.)

4. Disconnect the dispenser from the power source.

FROTHER AND WHIPPER MOTOR - FMD-1 (shown)

If voltage is present as described, replace the motor.

& FMD-2

 

 

If voltage is not present as described, refer to the wir-

 

 

ing diagrams and check the dispenser wiring harness.

 

 

 

 

 

 

13

 

 

 

 

 

 

 

 

 

8

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

4

 

 

 

11

12

 

 

 

3

 

 

 

 

10

9

7

6

 

 

 

 

5

 

 

 

 

FIG. 19 MIXING/WHIPPER CHAMBER P1619

 

 

 

 

COMPONENTS

 

 

FIG. 18 FROTHER AND WHIPPER MOTOR P1665

1.

Steam Collector

 

8.

Nut

 

Location:

2.

Mixing Chamber

 

9.

Slinger

3.

Dispense Tip

 

10.

Motor Assy.

 

The frother(s) is (are) located behind the dis-

4.

Whipper Chamber

 

11.

Fan

 

penser door, mounted on the front panel inside the

5.

O-Ring

 

12.

Vacuum Hose

whipper chamber.

6.

Frother

 

13.

Baffle

 

 

The whipper motor(s) is (are) located on the

7.

Receptacle w/Seal

 

 

 

 

 

 

 

 

 

 

 

 

back side of the whipper motor mounting panel.

Removal, Cleaning and Replacement (Refer to Fig.

Test Procedure:

19):

 

 

 

 

 

1.

Open the dispenser door and raise the top front

1. Disconnect the dispenser from the power source.

 

cover.

 

 

 

 

2.

Disconnect the red and white wires (FMD-1 &

2.

Lift the front edge of the each hopper assembly

 

FMD-2 left motor) or orange and white wires

 

over the tab on the hopper support panel and

 

(FMD-2 right motor) of the main harness from the

 

slide each hopper assembly out the front of the

 

black leads of the motor.

 

dispenser. Set aside for reassembly.

3.

Press and hold the dispense switch and check the

3.

Remove the four #8-32 screws securing the hop-

 

voltage across the disconnected harness wires

 

per support panel to auger motor mounting

 

with a voltmeter. Connect the dispenser to the

 

panel and the whipper motor mounting panel.

 

power source. The reading must be:

 

Set aside for reassembly.

 

 

 

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

4.

Disconnect vacuum hose (12) from fan baffle

 

b) 120 volts ac for three wire 120/208 volt or 120/

 

(13).

 

 

 

 

 

240 volt models.

25

 

 

 

 

 

29112 101598

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 24 Page 26
Image 25
Page 24 Page 26
Contents FMD-1 FMD-2 Introduction WarrantyUser Notices FMD-1 FMD-2FMD-1 only 00656.000028368.0001 Electrical Requirements Initial SET-UPElectrical HOOK-UP Plumbing RequirementsInitial Fill & Heat Rinse Timer FMD-2 onlyLiquid Level Control Running a Rinse SequenceAdjustments CleaningHopper Motor Speed Adjustment FMD-1 Cold Beverage SET-UP Optional FMD-2 onlyDraining the HOT Water Tank Hopper Motor Speed Programing FMD-2Problem TroubleshootingProduct will not dispense Probable CauseProbable Cause Remedy Problem Probable Cause Problem Probable Cause Remedy Dispenser is making unusual Refer to Service Lamp, see page 29 for lamp replacementComponent Access ServiceContents Auger Drive Components FMD-1Hopper Lid Retainer Clip Hopper AssemblySpacer Auger Motor Hopper Base Dust Seal Washer Retainer Clip Ing panelTo 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 FigAs assembly Lamp Replacement Refer toLamp Starter and Socket Refer to Location Level Control Board and Level Probe FMD-1 onlyLevel 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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