SERVICE (cont.)

CONTROL BOARD (FMD-3,-4,-5)

 

FMD-4 shown

J1

 

J2

 

J4

 

J3

 

J1

 

J2

 

J4

 

J3

 

 

#2

#1

 

FIG. 12 CONTROL BOARD

P4095

 

Location:

The Control Board(s) are located behind the lower front access cover mounted on the component bracket.

Test Procedure:

Liquid Level Control Circuitry(Control Board #1):

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. Connect the dispenser to the power source. The indication must 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.

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.Carefully connect a piece of insulated jumper wire to pin 10 (top right) of J2 on control board #1. Keep the other end of this wire away from any metal surfaces of the dispenser.

7.Check the voltage across the terminals of the inlet solenoid valve with a voltmeter. Connect the dispenser to the power source. 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 10 seconds.

8.Touch the free end of the jumper wire to the dis- penser housing. The indication must be 0.

9.Move the jumper wire 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 ap- proximately 5 seconds.

10.Disconnect the dispenser from the power source and remove the jumper wire.

If voltage is present as described, proceed to step 11.

If the voltage is not present as described, replace control board #1.

11.Gently pull the liquid level probe out of the tank lid and inspect for corrosion. Replace it if necessary.

12.Place the probe so that neither end is in contact with any metal surface of the dispenser.

13.Check the voltage across the terminals of the inlet solenoid valve with a voltmeter. Connect the dispenser to the power source. 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 10 seconds.

23

42672 122209

 

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Bunn FMD-4, FMD-5 manual Control Board
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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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