SERVICE (cont.)

SOLENOID VALVE (DISPENSE) - FMD-1 & FMD-2 (cont.)

Remove panel and set aside.

3.Remove the two #8-32 securing the auger motor mounting panel to the dispenser housing and the two rear #8-32 screws from the side panels.

4.Tilt auger motor mounting panel forward allowing access to the dispense valve(s).

5.Remove the wires from the solenoid valve.

6.Turn-off the water supply to the dispenser.

7.Drain enough water from the tank so the water level is below the dispense valve mounting hole.

8.Disconnect the water line from the solenoid valve.

9.Remove the #10-32 screw securing the solenoid valve to side of the tank. Remove solenoid valve.

10.Using the #10-32 screw install new solenoid valve on side of the tank

11.Push the water line onto the tube on bottom of solenoid valve.

12.Refer to Fig. 37 and reconnect the wires.

13.Reassemble auger and hopper components.

RED to Main Harness

 

WHI to Main Harness

 

FMD-1

 

ORN to Main

 

Harness

 

WHI to Main

 

Harness

 

RIGHT

 

TAN to Main Harness

 

LEFT

 

WHI to Main Harness

 

FMD-2

 

FIG. 37 DISPENSE SOLENOID VALVE

P1672

 

TERMINALS

 

SOLENOID VALVE (INLET) - FMD-1 & FMD-2

P1665

FIG. 38 INLET SOLENOID VALVE

Location:

The inlet solenoid is located on the lower right side of the rear panel.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the white and violet wires from the solenoid valve.

3.Check the voltage across the white and violet wires with a voltmeter. Connect the dispenser to the power source. The indication must be 120 volts ac for two wire 120 volt models, three wire 120/208 and 120/240 volt models.

4.Disconnect the dispenser from the power source,

If voltage is present as described, proceed to #5

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

5.Check for continuity across the solenoid valve coil terminals.

If continuity is present as described, reconnect the white and violet wires to the solenoid.

If continuity is not present as described, replace the solenoid valve.

6.Check the solenoid valve for coil action. Connect the dispenser to the power source. Listen carefully in the vicinity of the solenoid valve for a "clicking" sound as the coil magnet attracts.

36

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Image 36
Bunn FMD-1 FMD-2 service manual Solenoid Valve Dispense FMD-1 & 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.