SERVICE (cont.)

HOPPER DRIVE BOARD - FMD-1 ONLY

P1665

FIG. 20 HOPPER DRIVE BOARD

Location

The hopper drive board is located inside the dispenser mounted on the auger motor mounting bracket.

Test Procedures:

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 indication 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 supply.

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. 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 hopper drive board.

Removal and Replacement: (Refer to Fig. 2)

1.Remove hopper assy (17), and set aside for reas- sembly.

2.Remove the four #8-32 screws securing the hop- per support plate (12), remove plate and set aside for reassembly.

3.Remove the four #8-32 screws, located inside the dispener housing on the lower right front of the auger motor mounting panel (21), securing auger motor mounting bracket (18) and auger motor

(19)to the rear of the auger motor mounting panel

(21).

4.Disconnect the wires from the terminals on the hopper drive board and disconnect the three pin plug (J1) from the hopper drive board..

5.Remove auger motor mounting bracket (18), au- ger motor (19), dust seal (20) and hopper drive board as an assembly.

6.Remove the two #8-32 screws securing the hop- per drive board to the auger motor mounting bracket.

7.Remove the two spacers from the hopper drive board and discard board.

8.Install spacers on new hopper drive board.

9.Install new hopper drive board to the auger motor mounting bracket using two #8-32 screws..

10.Refer to Fig. 21 and reconnect the wires to the hopper drive board terminals .

11.Connect three pin plug from the potentiometer to the hopper drive board J1. Refer to Fig. 21.

12.Install auger motor mounting bracket with auger motor and hopper drive board to the rear of the auger motor mounting panel using four #8-32 screws.

13.Install hopper support plate using four #8-32 screws.

14.Install hopper assy (17).

26

29112 101598

 

Page 25 Page 27
Page 26
Image 26
Bunn FMD-2 service manual Hopper Drive Board FMD-1 only
Page 25 Page 27

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.
Top Page Image Contents