Bunn FMD-5, FMD-4 service manual Problem Probable Cause, Stat for testing procedures. See, Leaks

Page 10

TROUBLESHOOTING (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Water is not hot (Cont.)

Spitting or excessive steaming

4.Tank Heater Switch

5.Relay (120V versions only)

6.Control Board #2 (120V versions only)

1. Lime build-up

CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water conditions. Excessive mineral build-up on stain- less steel surfaces can initiate corro- sive reactions resulting in serious leaks.

Refer to Service - Tank Heater Switch for testing procedures. See page 39

Refer to Service - Relay for testing procedures. See page 40

Refer to Service - Control Board #2 for testing procedures. See page 22

Inspect the tank assembly for exces- sive lime deposits. Delime as re- quired.

2. Control Thermostat

Refer to Service - Control Thermo-

 

stat for testing procedures. See

 

page 19

Dripping from dispense tip

1. Lime build-up

 

CAUTION - Tank and tank compo-

 

nents should be delimed regularly

 

depending on local water conditions.

 

Excessive mineral build-up on stain-

 

less steel surfaces can initiate corro-

 

sive reactions resulting in serious

 

leaks.

Inspect the tank assembly for exces- sive lime deposits. Delime as re- quired.

2.

Dispense Solenoid Valve

Remove the dispense solenoid valve

 

 

and clear any obstructions. Rebuild

 

 

or replace the valve if necessary. See

 

 

page 35

Water flows into tank continuously 1.

Control Board #1 and Probe

Refer to Service - Control Board and

 

 

Probe for testing procedures. See

 

 

page 20

2.

Solenoid Valve (Inlet)

Refer to Service - Solenoid Valve

 

 

(Inlet) for testing procedures. See

 

 

page 37

10

35135 012103

 

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Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217User Notices BUNN-O-MATIC Commercial Product WarrantyIntroduction FMD-428368.0000 00831.0000FMD-4 FMD-5 Electrical HOOK-UP Initial SET-UPElectrical Requirements Plumbing RequirementsRunning a Rinse Sequence Liquid Level Control Rinse TimersInitial Fill & Heat Dispenser USECold Beverage SET-UP Optional CleaningAdjustments Hopper Motor Speed ProgramingDraining the HOT Water Tank Product will not dispense TroubleshootingProblem Probable CauseProbable Cause Remedy Dripping from dispense tip Lime build-up Problem Probable CauseStat for testing procedures. See LeaksRefer to Operation Rinse Timer. See Product overflows container Dispense SwitchWeak product Water Temperature Tip with a thermometer. ReadingTroubleshooting Problem Contents ServiceComponent Access Auger Drive Components FMD-4Spacer Auger Motor Hopper Base Dust Seal Washer Hopper LidRetainer Clip Panel To the rear of the auger motor mounting panel Auger Drive Components FMD-4Location Locknut Auger Drive Components FMD-4 & FMD-5Bushing Panel Auger Drive Shaft Hopper Dust SealRemove dust seal 17 from auger motor Refer to and reconnect the wires Ballasts FMD-4 & FMD-5Control Thermostat LocationControl Board Control BoardService Control Board Connectors FMD-4 Dispense Switchs FMD-4 & FMD-5FMD-5 Dispense Switches Dispense Switch TerminalsFAN FANFrother and Whipper Motor FMD-4 shown & FMD-5 ComponentsWhipper Motor Terminals INCREASE/DECREASE Switch INCREASE/DECREASE SwitchLamp Holders Lamp Replacement Refer to FigDoor Assy Upper Panel Lamp Holders Lower Panel Lamp Replacement Refer to Lamp Starter and Socket Refer to LocationLimit Thermostat Limit ThermostatBLK from Main Harness BRN/BLK to RINSE/RUN SwitchBoard J2-3 HOT/COLD Switch Optional HOT/COLD SwitchSolenoid Valve Cold Water Optional Cold Water Solenoid ValveDispense Solenoid Valve Solenoid Valve Dispense FMD-4 & FMD-5 Dispense Solenoid Valve TerminalsSolenoid Valve Inlet Inlet Solenoid ValveTank Heater Main Harness ThermostatTank Heater Switch Pull component bracket out the front of the dis Tank Heater Relay 120V Dispensers onlyIf the resistance measures as described, proceed to step WHI from BLK from Main Harness TransformerRemove and discard the transformer WHI/GRN fromSchematic Wiring Diagram FMD-4 Single PHASE, 60HZ Schematic Wiring Diagram FMD-5 Single PHASE, 60HZ
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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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