SERVICE (cont.)

DISPENSE SWITCH(S) - FMD-1 & FMD-2 (cont.)

Test Procedure:

FMD-1

1.Disconnect the dispenser from the power source.

2.Open the dispenser door and remove the bottom door cover.

3.Disconnect the wires from the door interconnect wiring harness to the dispense switch.

4.Check for voltage across the black wire and the red wire from the door interconnect wiring harness. 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.

5.Disconnect the dispenser from the power source.

If voltage is present as described, proceed to #6.

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

6.Check for continuity across the terminals with the switch in the“ON” pressed position. Continuity must not be present when the switch is in the “OFF” released position.

If continuity is present as described, reconnect the connector to the door interconnect wiring harness, the switch is operating properly.

If continuity is not present as described, replace the switch.

FMD-2

1.Disconnect the dispenser from the power source.

2.Open the dispenser door and remove the bottom door cover.

3.Disconnect the wires from the door interconnect wiring harness to the dispense switch to be tested.

4.Check for voltage across the black and red/white wires for the right dispense switch or the black and red wires for the left dispense switch from the door interconnect wiring harness. Connect the dis- penser 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.

5. Disconnect the dispenser from the power source.

If voltage is present as described, proceed to #6.

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

6.With a voltmeter, check the voltage across the black/white (+) and orange (-) wires for the right dispense switch, or blue/white (+) and orange (-) for the left dispense switch from the door intercon- nect wiring harness. Connect the dispenser to the power source. The indication must be +5 volts dc.

If voltage is present as described, proceed to #7.

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

7.Check for continuity across the terminals (top right to top left; bottom right to bottom left) of the dispense switch with the switch in the “ON” posi- tion. Continuity must not present when the switch is in the “OFF” released position.

If continuity is present as described, reconnect the connector to the door interconnect wiring harness, the switch is operating properly.

If continuity is not present as described, replace the switch.

Removal and Replacement

1.Open the dispenser door.

2.Remove the five #6-32 screws securing the bot- tom door cover and remove cover.

3.Disconnect the wires on the dispense switch from the door interconnect wiring harness.

4.Compress the clips inside the door on the dis- pense switch and gently push the switch through the opening

5.Push the new switch into the opening and spread the clips to hold the switch in the door.

6.Reconnect the wires to the dispense switch from the door interconnect wiring harness.

7.Reinstall the door bottom cover using five #6-32 screws.

8.Refer to Fig. 14 when reconnecting wires.

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Bunn service manual Dispense Switchs FMD-1 & FMD-2, Test Procedure
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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.
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