Bunn service manual Ballast FMD-1 & FMD-2, Location

Page 18

SERVICE (cont.)

BALLAST - FMD-1 & FMD-2 (cont.)

Location

FMD-1

The front door lamp ballast is located behind the front access panel on the left front side of the com- ponent bracket.

FMD-2

The front door lamp ballast is located behind the front access panel on the left rear side of the com- ponent bracket.

Test Procedure

1.Disconnect the dispenser from the power source.

2.Disconnect the two black lead on the ballast from the main harness.

3.Check for continuity between the two black leads on the ballast.

If continuity is present as described the ballast is operating properly.

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

Removal and Replacement

FMD-1

1.Disconnect the wires from the ballast.

2.Remove the two #8-32 screws securing the bal- last to the component bracket.

3.Remove and discard ballast.

4.Using two #8-32 screws install new ballast on the component bracket.

5.Refer to the Fig. 8 when reconnecting the wires. FMD-2

1.Loosen the two #8-32 screws securing the com- ponent bracket to the dispenser housing base.

2.Pull component bracket out the front of the dis- penser far enough so the leads on the ballast can be disconnected from the main wiring harness and the door interconnect harness.

3.Remove the two #8-32 screws securing the ballast the rear of the component bracket.

4.Remove and discard ballast.

5.Install new ballast on the rear of the component bracket and secure with two #8-32 screws.

6.Refer to Fig. 8 and reconnect the wires.

7.Place the component bracket into position and

tighten the two #8-32 screws securing the compo- nent bracket to the dispenser housing base.

BLK to BLK

 

from Main

 

Wiring Harness

 

BLK to BLU from

 

Main Harness

 

FIG. 8 BALLAST TERMINALS

P1447

 

CONTROL THERMOSTAT - FMD-1 & FMD-2

 

FIG. 9 CONTROL THERMOSTAT

P1665

 

Location

 

The control thermostat is located under the front tank mounting bracket on the upper right side of the dispenser housing.

Test Procedure

1.Disconnect the dispenser from the power source.

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

3.Remove bulb from the tank.

4.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 with a voltmeter. Connect the dis- penser to the power source. The indication must be:

18

29112 101598

 

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Contents BUNNFMD-1 FMD-2 User Notices WarrantyIntroduction FMD-1 FMD-200656.0000 FMD-1 only28368.0001 Electrical HOOK-UP Initial SET-UPElectrical Requirements Plumbing RequirementsLiquid Level Control Rinse Timer FMD-2 onlyInitial Fill & Heat Running a Rinse SequenceHopper Motor Speed Adjustment FMD-1 CleaningAdjustments Cold Beverage SET-UP Optional FMD-2 onlyDraining the HOT Water Tank Product will not dispense TroubleshootingProblem Probable CauseProbable Cause Remedy FMD-1 Problem Probable CauseStat for testing procedures. See SeeProblem Probable Cause Remedy Refer to Service Lamp, see page 28 for lamp replacement Dispenser is making unusualContents ServiceComponent Access Auger Drive Components FMD-1Spacer Auger Motor Hopper Base Dust Seal Washer Retainer Clip Hopper AssemblyHopper Lid Retainer Clip Ing panelAuger Drive Components FMD-1 To the rear of the auger motor mounting panelAuger Drive Components FMD-2 Hopper Hopper Assy Disconnect the wires from the auger motor 16 to be removed Remove dust seal 17 from auger motorRemove auger motor and discard Ballast FMD-1 & FMD-2 LocationControl Board FMD-2 only Thermostat TerminalsService Dispense Switch Dispense Switchs FMD-1 & FMD-2 Dispense Switch Terminals P1449 FAN FMD-1 & FMD-2FMD-2 Frother and Whipper Motor FMD-1 shown & FMD-2 Whipper Motor Terminals P1221Hopper Drive Board FMD-1 only Hopper Drive BoardHopper Drive Board FMD-1 only Hopper Drive Board TerminalsLamp Replacement Refer to Fig Door Assy Upper Panel Lamp Holders Lower PanelLamp Starter and Socket Refer to Location Lamp Replacement Refer toAs assembly Level Control Board and Level Probe FMD-1 onlyReconnect the violet wire to terminal Level Control Board and Level Probe FMD-1 onlyRINSE/RUN Switch FMD-1 LocationRINSE/RUN Switch FMD-2 WHI/RED toBLK from Main Harness WHI/BRN to YEL to Control Board J2-3 Solenoid Valve Cold Water OPTIONALFMD-2 only Cold Water Solenoid ValveFMD-1 Solenoid Valve Dispense FMD-1 & FMD-2 Solenoid Valve Inlet FMD-1 & FMD-2 Tank HeaterTank Heater FMD-1 shown & FMD-2 Main Harness ThermostatTransformer FMD-2 only WHI/GRN T7 WHI/BLK T12Schematic Wiring Diagram FMD-1 Single PhaseSchematic Wiring Diagram FMD-2
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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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