SERVICE

This section provides procedures for testing and replacing various major components used in this dispenser should service become necessary. Re- fer to Troubleshooting for assistance in determin- ing the cause of any problem.

WARNING - Inspection, testing, and repair of electri- cal equipment should be performed only by quali- fied service personnel. The dispenser should be unplugged when servicing, except when electrical tests are required and the test procedure specifi- cally states to plug-in the dispenser.

COMPONENT ACCESS

WARNING - Disconnect the dispenser from the power source before the removal of any panel or the replacement of any component.

All components are accessible by opening the door, removal of the door panels, dispenser top covers, hopper(s), hopper support plate, splash guard, splash panel w/drip tray, lower front access panel and rear access cover.

Refer to the contents listing for component loca- tion.

Contents

 

Auger Drive Components (FMD-1)

13

Auger Drive Components (FMD-2)

15

Ballast

17

Control Thermostat

18

Control Board (FMD-2)

19

Dispense Switch

21

Fan

23

Frother

24

Hopper Drive Board(FMD-1)

26

Increase/Decrease Switch (FMD-2)

27

Lamp Holder

28

Lamp

28

Lamp Starter and Socket

29

Level Control Board and Level Probe (FMD-1)

29

Limit Thermostat

31

Rinse/Run Switch (FMD-1)

31

Rinse/Run Switch (FMD-2)

32

Solenoid (Cold Water - Optional FMD-2 Only)

33

Solenoid (Dispense)

34

Solenoid (Inlet)

35

Tank Heater

36

Tank Heater Switch

37

Transformer (FMD-2)

38

Whipper Motor

24

Wiring Diagram

39,40

AUGER DRIVE COMPONENTS FMD-1

P1665

FIG. 1 AUGER DRIVE COMPONENTS

Location

The auger components are located inside the bottom part of the hopper except for the auger drive bracket, spacer and retaing clip, which are located on the outside rear of the hopper base. The auger motor is located on the lower right rear of the motor mounting panel. Refer to Fig. 2 for disassembly and assembly.

Test Procedures - Auger Motor

1.Disconnect the dispenser from the power source.

2.Disconnect the white/red wire and the white wire from the hopper speed control board.

3.Check the voltage across the white/red wire and the white wire with a voltmeter. With the rinse/ run switch in the run (lower) position, connect the dispenser to the power supply. The indica- tion must be :

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

b)120 volts ac for three wire 120/208 volt or 120/240 volt models.

4.Disconnect the dispenser from the power sup- ply.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the wir- ing diagram and check the dispenser wiring harness.

13

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Bunn FMD-2 service manual Service, Component Access, Contents, Auger Drive Components FMD-1

FMD-2, FMD-1 specifications

The Bunn FMD-2 is an advanced coffee dispensing machine designed for high-traffic environments, such as cafés, restaurants, and convenience stores. This commercial coffee equipment stands out for its reliability, efficiency, and user-friendly features, making it a preferred choice among coffee retailers.

A standout feature of the FMD-2 is its dual coffee bean hopper system, which allows for the storage and dispensing of two different coffee blends simultaneously. This versatility provides establishments the opportunity to cater to varying customer preferences, whether they prefer a robust espresso or a smooth medium roast. The hoppers can hold a significant amount of coffee beans, ensuring that the machine can keep up with high demand without the need for frequent refilling.

The FMD-2 incorporates state-of-the-art brewing technology, including the ability to brew coffee quickly while preserving the essential flavor characteristics of the beans. Its precision brewing process ensures consistency in taste and quality, which is crucial for customer satisfaction in a commercial setting. The machine is equipped with adjustable brew times and temperatures, allowing operators to fine-tune the brewing process according to specific coffee styles or customer preferences.

Another notable characteristic of the Bunn FMD-2 is its digital interface, which features an intuitive touchscreen display. This modern interface simplifies the operation of the machine, enabling baristas and staff to quickly train and adapt to its functionalities. The display provides real-time feedback on brewing status, maintenance reminders, and settings adjustments, making it easier to ensure optimal performance and reduce downtime.

In addition to its user-friendly design, the Bunn FMD-2 is constructed for durability. Its stainless steel exterior not only enhances its aesthetic appeal but also ensures that it can withstand the rigors of daily use in a bustling environment. The machine is designed with easy maintenance in mind, allowing for straightforward cleaning and servicing to keep it operating at peak performance.

Overall, the Bunn FMD-2 is a versatile, reliable, and innovative coffee dispensing solution that meets the demands of today’s coffee enthusiasts. With its dual hopper system, precision brewing technology, and user-friendly interface, it’s an ideal choice for any establishment looking to elevate their coffee offerings and enhance customer experience.