SERVICE (cont.)

CONTROL THERMOSTAT (FMD-1,-2,-2FD,-3,-4,-5)

FMD-3 shown

FIG. 14 CONTROL THERMOSTAT

P1445

 

Location:

 

The control thermostat (mechanical or electronic) is located inside the dispenser on the upper left side of the housing.

Test Procedure:

Mechanical Thermostat:

1.Disconnect the dispenser from the power source.

2.Disconnect the black wire of the control thermostat from the black lead from the limit thermostat.

3.Remove bulb from the tank.

4.With a voltmeter, check the voltage across black wire on the control thermostat and the white or red wire on the tank heater with the tank heater switch in the “ON” (lower) position. Connect the dispenser to the power source. The indication must be:

a)120 volts ac for two wire 120 volt models.

b)208 volts ac for three wire 120/208 volt mod- els.

c)240 volts ac for two wire 240 volt models and three wire 120/240 volt models.

d)230 volts ac for two wire 230 volt models.

5.Disconnect the dispenser from the power source.

If voltage is present as described the control thermostat is operating properly. Reinstall bulb into the tank.

If voltage is not present as described, replace the thermostat.

Electronic Thermostat (Optional):

1.Disconnect the dispenser from the power source.

2.Disconnect the black wire of the control thermostat from the black wire from the limit thermostat.

3.Remove temperature probe from the tank.

4.With a voltmeter, check the voltage across the black wire from the control thermostat and the white wire on the tank heater with the tank heater switch in the “ON” (lower) position. Connect the dispenser to the power source. The indication must be120 volts ac for two wire 120 volt models.

If voltage is present as described the control thermostat is operating properly. Reinstall temperature probe into the tank.

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

Removal and Replacement:

1.Disconnect the wires from the thermostat.

2.Remove the thermostat capillary bulb/temperature probe by firmly pulling up on the capillary grommet at the tank lid.

3.Loosen the two #8-32 screws securing the thermo- stat bracket to the upper left rear of the dispenser housing.

4.Remove thermostat bracket and thermostat as an assembly.

5.Install the new thermostat and bracket inside the dispenser housing on the upper left rear side and tighten the two #8-32 screws.

6.Slide the grommet to the line 4.5" above the bulb on the new capillary tube (mechanical thermostat only).

7.Insert the capillary bulb/temperature probe through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid.

8.Carefully bend the capillary tube so that the tube and bulb inside the tank are in the vertical position and away from any electrical connections (mechanical thermostat only).

9.Refer to Fig. 15 and reconnect the wires.

NOTE - The capillary tube must be clear of any electrical termination and not kinked.

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Image 26
Bunn FMD-5, FMD-4 manual Location, Remove bulb from the tank, Remove temperature probe from the tank

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.