Bunn FMD-1 FMD-2 service manual Problem Probable Cause

Page 10

TROUBLESHOOTING (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Water is not hot (Cont.)

Spitting or excessive steaming

4. Tank Heater Switch

1. Lime build-up

CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water conditions. Excessive mineral build-up on stain- less steel surfaces can initiate corro- sive reactions resulting in serious leaks.

Refer to Service - Tank Heater Switch for testing procedures. See page 38

Inspect the tank assembly for exces- sive lime deposits. Delime as re- quired.

2. Control Thermostat

Refer to Service - Control Thermo-

 

stat for testing procedures. See

 

page 19

Dripping from dispense tip

1. Lime build-up

 

CAUTION - Tank and tank compo-

 

nents should be delimed regularly

 

depending on local water conditions.

 

Excessive mineral build-up on stain-

 

less steel surfaces can initiate corro-

 

sive reactions resulting in serious

 

leaks.

Inspect the tank assembly for exces- sive lime deposits. Delime as re- quired.

2. Dispense Solenoid Valve

Remove the dispense solenoid valve

 

and clear any obstructions. Rebuild

 

or replace the valve if necessary. See

 

page 35

Water flows into tank continuously 1. A) Level Control Board and Probe

Refer to Service - Level Control Board

- FMD-1

and Probe for testing procedures.

 

See page 30

B) Control Board and Probe - FMD-

Refer to Service - Control Board and

2

Probe for testing procedures. See

 

page 20

2. Solenoid Valve (Inlet)

Refer to Service - Solenoid Valve

 

(Inlet) for testing procedures. See

 

page 36

10

29112 101598

 

Page 9 Page 11
Image 10
Page 9 Page 11
Contents FMD-1 FMD-2 User Notices WarrantyIntroduction FMD-1 FMD-2FMD-1 only 00656.000028368.0001 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 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 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 LocationWHI/RED to RINSE/RUN Switch FMD-2BLK from Main Harness WHI/BRN to YEL to Control Board J2-3 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 HeaterTank Heater FMD-1 shown & FMD-2 Tank Heater Switch FMD-1 shown & FMD-2Main Harness Thermostat 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.
Top Page Image Contents