SERVICE (cont.)

CONTROL BOARD (CONT.)

14.Move the probe’s flat end to the dispenser housing. The indication must be 0.

15.Move the probe’s flat end away from the housing. The indication must again be 120 volts ac for two wire 120 volt models, three wire 120/208 volt models, three wire 120/240 volt models, or 230 volts ac for two wire 230 volt models after a delay of approximately 5 seconds.

16.Disconnect the dispenser from the power source.

If the voltage is present as described, re-install the probe. The liquid level control circuitry is operating properly.

If the voltage is not present as described, check the pink probe wire and green tank wire for continuity.

Hopper Motor Control Circuitry (Stations 1-3, Control Board #1 & Stations 4-5, Control Board #2):

1.Disconnect the dispenser from the power source.

2.Back probe check the voltage across pins 5 & 6 of the six pin J3connector on the wiring harness with a voltmeter. Connect the dispenser to the power source. The indication must be 24 volts ac.

3.Disconnect the dispenser from the power source.

If voltage is present as described, proceed to step 4. If voltage is not present as described, refer to the wiring diagram and check the dispenser wiring harness.

4.Check that the rinse/run switch is in the run posi- tion.

5.Check the voltage across the red (+) terminal and the black (-) terminal of the auger motor with a volt- meter. Connect the dispenser to the power source. Press and hold the appropriate dispense switch. After a delay of about .6 seconds, the indication must be between +4.0 and +24.5 volts dc.

If the voltage is present as described, the hopper motor control circuitry is operating properly.

If the voltage is not present as described, replace the control circuit board.

Tank Heater Relay Control Circuitry (Control Board #2)

(120V dispensers only):

1.Disconnect the dispenser from the power source.

2.Back probe check the voltage across pins 5 & 6 of the six pin J3 connector on the wiring harness with a voltmeter. Connect the dispenser to the power source. the indication must be 24 volts ac.

3.disconnect the dispenser from the power source.

If voltage is present as described, proceed to step 4. If voltage is not present as described, refer to the wiring diagram and check the dispenser wiring harness.

4.Back probe check the voltage across pins 1 & 4 of the four-pin J4 connector on the wiring harness with a voltmeter. The indication must be 120 volts ac.

5.Disconnect the dispenser from the power source.

If voltage is present as described, proceed to step 6. If voltage is not present as described, refer to the wiring diagram and check the dispenser wiring harness.

6.Check the voltage across the coil terminals of the tank heater relay with a voltmeter. Connect the dispenser to the power source. The indication must be 0 volts ac.

If voltage is absent as described, proceed to step 7. If voltage is present, replace the control circuit board #2.

7.Place containers below any three dispenser noz- zles.

8.Simultaneously initiate dispenses at each of the selected dispense stations while monitoring the voltage across the coil terminals of the tank heater relay. The indication must be 120V ac.

If voltage is present as described, the control board #2 is functioning correctly.

If voltage is not present as described, replace the control circuit board #2.

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Image 24
Bunn FMD-5, FMD-4 manual Control Board, Check that the rinse/run switch is in the run posi- tion
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FMD-4, FMD-5 specifications

The Bunn FMD-5 is a state-of-the-art coffee dispenser designed specifically for high-volume coffee brewing situations. This machine is ideal for restaurants, convenience stores, and other establishments that require an efficient and reliable coffee dispensing solution.

One of the primary features of the Bunn FMD-5 is its ability to brew and serve fresh, hot coffee with exceptional speed. The unit is capable of dispensing up to five gallons of coffee per hour, making it an ideal choice for busy environments where customer demand is high. The system utilizes a digital brewer control that allows for precise brewing temperatures and times, ensuring consistency in flavor and quality.

The FMD-5 also incorporates advanced technologies to streamline the brewing process. It features a programmable control panel that allows users to adjust settings based on their specific needs. This includes the ability to set brew cycles, control brew levels, and even program different brew strengths. The easy-to-read digital display shows real-time information, making it simple for operators to monitor the brewing process.

Another notable characteristic of the Bunn FMD-5 is its compact and space-saving design. Despite its robust brewing capacity, the unit is designed to fit easily in various retail and foodservice environments. The machine is also built with durable materials, ensuring longevity and reliability under heavy usage.

For maintenance, the FMD-5 is designed with user convenience in mind. It features removable components and accessible areas for easy cleaning and routine maintenance. Users can also benefit from preventative maintenance features that monitor the machine’s performance, alerting operators to any potential issues before they escalate.

In terms of versatility, the Bunn FMD-5 can accommodate different brewing systems and coffee types, allowing users to customize their offerings based on customer preferences. It supports pre-ground coffee and can also be adapted for different brewing styles, enhancing its usability in various coffee service environments.

Overall, the Bunn FMD-5 is an impressive combination of speed, efficiency, and flexibility, making it an excellent choice for any operation that demands high-quality coffee with minimal wait time. Whether you are serving a morning rush of customers or maintaining a steady stream of coffee through the day, the Bunn FMD-5 stands out as a reliable and efficient coffee dispensing solution.
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