Bunn FMD-4, FMD-5 Problem, Product will not dispense, Level Control Board and Probe FMD-1, Remedy

Page 7

TROUBLESHOOTING (cont.)

PROBLEM

Product will not dispense (cont.)

PROBABLE CAUSE

7.Level Control Board and Probe - FMD-1

8.Control Board

REMEDY

Refer to Service - Level Control Board and Probe for testing procedures. See page 41

Refer to Service - Control Board and Probe for testing procedures. See page 20

9.Overflow Protection Switch

10.Auger Drive

11.Water Strainer

12.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 cor- rosive reactions resulting in serious leaks.

Refer to Service - Overflow Protec- tion Switch. See page 44

Refer to Service - Auger Drive. See page 14

(A)Direction of flow arrow must be pointing towards dispenser.

(B)Remove the strainer and check for obstructions. Clear or replace.

Inspect the tank assembly for ex- cessive lime deposits. Delime as required.

Water is not hot

13.Transformer

14.Rinse Cycle Not Run

1. Limit Thermostat

CAUTION - Do not eliminate or by- pass limit thermostat. Use only BOM replacement part #29329.1000

2. Control Thermostat

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

Refer to Cleaning for running a Rinse Cycle.

Refer to Service - Limit Thermostat for testing procedures. See page 43

Refer to Service - Control Thermostat for testing procedures. See page 26

3. Tank Heater

Refer to Service - Tank Heater for

 

testing procedures. See page 50

7

42672 122209

 

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Contents Phone 217 529-6601 FAX 217 FMD SeriesExcluding regular maintenance items BUNN-O-MATIC Commercial Product WarrantyIntroduction Cleaning Required Regular Maintenance Problem Probable Cause Remedy ProblemProduct will not dispense Level Control Board and Probe FMD-1Problem Probable Cause Remedy Troubleshooting Procedures. See Product overflows container Dispense SwitchInstall a regulator if necessary to Excess dust Fan Refer to Service42672 20,23 Component AccessAccess Panels SERVICEcontTest Procedures Auger Motor Service Auger Drive Components all ModelsLocation Retainer Clip Panel RED to Control Board ServiceAuger Drive Components Spacer Auger Motor Hopper Base Dust Seal WasherLocknut Auger Motor Bracket Remove auger drive shaft bushing from hopperRinse and dry each item thoroughly Bushing Panel Auger Drive ShaftAuxillary Control Board FMD DBC-3 only Disconnect the dispenser from the power source Service Auxillary Control BoardBallast all Models ServiceControl Board Test Procedure Power SupplyHopper Motor Control Circuitry Check that the RINSE/RUN switch is in the Rinse positionControl board to the component bracket Using four #6-32 keps nutsConnectors on the control board Control BoardControl Board Check that the rinse/run switch is in the run posi- tion Control Board Connectors Location Remove temperature probe from the tankRemove bulb from the tank BLK to Main Control ThermostatWHI to Main If voltage is present as described, proceed to #6 Open the dispenser door and remove the bottom door coverIf voltage is present as described, proceed to #7 FMD DBC-3 Digital Touch Control Switch FMD DBC-2,DBC-3FMD DBC-2FD Connectors Digital Touch Control SwitchEMI Filter EMI Filter 230 Volt FMD DBC-3Disconnect the black and white wires from the fan terminals Test ProceduresVacuum FAN all Models Frother and Whipper Motor Frother and Whipper Motor all Models except -2FDWill seat inside the whipper chamber Frother and Whipper MotorHopper Drive Board Hopper Drive Board FMD-1 onlyHopper Drive Board Terminals Disconnect the wires from the switch terminals HOT/COLD Switch Optional for FMD DBC-3Terminals Door Assy Upper Panel Lamp Holders Lower Panel Lamp Holder all ModelsLamp Starter and Socket Level Control Board and Level Probe FMD-1 only Reconnect the violet wire to terminalLevel Board Terminals Limit Thermostat Limit Thermostat all ModelsOverflow Protection Switch RINSE/RUN Switch Rinse /RUN Switch all ModelsCold Water Solenoid Terminals Solenoid Valve Cold Water Optional for FMD-2,-3,-4,-5Dispense Solenoid Valves P1637.40 Location Solenoid Valves Dispense all ModelsSolenoid Valve HOT Water Dispense Solenoid Valve FMD-2FD,DBC-2FD,-3,DBC-3Inlet Solenoid Valve Solenoid Valve Inlet all ModelsTank Heater all Models WHI or RED to Main BLK to Limit Wiring HarnessBRN/BLK from WHI from Main Harness Tank Heater Relay FMD-4,-5,120V Dispensers onlyTank Heater Switch Tank Heater Switch all ModelsTransformer all Models Disconnected from the main wiring harnessRemove and discard the transformer Q7 & MOV2 Controls Refill Valve Q1 & MOV1 Controls Left Whipper MotorQ2 & MOV3 Controls Center Whipper Motor Q5 & MOV4 Controls Right Whipper MotorBLK Schematic Wiring Diagram FMD-1WHI-16 Schematic Wiring Diagram FMD-1ASchematic Wiring Diagram FMD-2 Schematic Wiring Diagram FMD-2A Schematic Wiring Diagram FMD DBC-2 Freeze Dried W/HOT Water Schematic Wiring Diagram FMD-2FD 42672 42672 42672 42672 Schematic Wiring Diagram FMD DBC-3 With HOT Water Dispense Schematic Wiring Diagram Fmda DBC-3 With HOT Water Dispense 42672 42672 42672 42672 Schematic Wiring Diagram FMD-5A
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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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