Bunn FMD-4, FMD-5 service manual HOT/COLD Switch Optional

Page 33

SERVICE (cont.)

HOT/COLD SWITCH (Optional)

J1

J2

J4

J3

J1

J2

J4

J3

P2635

FIG. 27 HOT/COLD SWITCH

Location:

The hot/cold switch is located on the left side of the whipper motor mounting panel.

Test Procedure:

1.Disconnect the dispenser from the power source.

2.Disconnect the four pin plug from the hot/cold switch and the four pin connector on the main wiring harness.

3.Press the left dispense switch on the door and, with a voltmeter, check the voltage across the white wire (pin 4) and red wire (pin 2) in the four pin connector on the main wiring harness. Con- nect the dispenser to the power source. The indi- cation must be:

a)120 volts ac for two wire 120 volt models, and three wire 120/208 volt and 120/240 volt models.

b)240 volts ac for two wire 240 volt models.

4.Disconnect the dispenser from the power source.

If voltage is present as described, reconnect the four pin plugs and proceed to #5.

If voltage is not present as described, refer to the Wiring Diagrams and check the main wiring harness.

5.Disconnect the wires from the switch terminals.

6.With the switch in the “Cold” (upper) position check for continuity between the center terminal and the bottom terminal. With the switch in the “Hot” (lower) position check for continuity be- tween the center terminal and the upper terminal.

If continuity is present as described, the hot/cold switch is operating properly.

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

Removal and Replacement:

1.Remove all wires from the switch terminals.

2.Remove the mounting nut on the front of the whip- per motor mounting panel.

3.Remove the hot/cold switch from the rear of the front panel and discard.

4.Reconnect the wires to the terminals on the rear of the new switch.

5.Push new hot/cold switch through the hole on the left side of the whipper motor mounting panel and secure with mounting nut.

6.Refer to Fig. 28 when reconnecting the wires.

TAN to Main Harness

RED to Main Harness

WHI/YEL to Cold

Solenoid

P1208

FIG. 28 HOT/COLD SWITCH TERMINALS

33

35135 012103

 

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Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisIntroduction BUNN-O-MATIC Commercial Product WarrantyUser Notices FMD-400831.0000 28368.0000FMD-4 FMD-5 Electrical Requirements Initial SET-UPElectrical HOOK-UP Plumbing RequirementsInitial Fill & Heat Liquid Level Control Rinse TimersRunning a Rinse Sequence Dispenser USEAdjustments CleaningCold Beverage SET-UP Optional Hopper Motor Speed ProgramingDraining the HOT Water Tank Problem TroubleshootingProduct will not dispense Probable CauseProbable Cause Remedy Stat for testing procedures. See Problem Probable CauseDripping from dispense tip Lime build-up LeaksWeak product Water Temperature Product overflows container Dispense SwitchRefer to Operation Rinse Timer. See Tip with a thermometer. ReadingTroubleshooting Problem Component Access ServiceContents Auger Drive Components FMD-4Hopper Lid Spacer Auger Motor Hopper Base Dust Seal WasherRetainer Clip Panel Auger Drive Components FMD-4 To the rear of the auger motor mounting panelLocation Bushing Panel Auger Drive Shaft Auger Drive Components FMD-4 & FMD-5Locknut Hopper Dust SealRemove dust seal 17 from auger motor Ballasts FMD-4 & FMD-5 Refer to and reconnect the wiresLocation Control ThermostatControl Board Control BoardService Control Board Connectors Dispense Switchs FMD-4 & FMD-5 FMD-4FMD-5 Dispense Switch Terminals Dispense SwitchesFAN FANComponents Frother and Whipper Motor FMD-4 shown & FMD-5Whipper Motor Terminals INCREASE/DECREASE Switch INCREASE/DECREASE SwitchLamp Replacement Refer to Fig Lamp HoldersDoor Assy Upper Panel Lamp Holders Lower Panel Lamp Starter and Socket Refer to Location Lamp Replacement Refer toLimit Thermostat Limit ThermostatRINSE/RUN Switch BLK from Main Harness BRN/BLK toBoard J2-3 HOT/COLD Switch HOT/COLD Switch OptionalCold Water Solenoid Valve Solenoid Valve Cold Water OptionalDispense Solenoid Valve Dispense Solenoid Valve Terminals Solenoid Valve Dispense FMD-4 & FMD-5Inlet Solenoid Valve Solenoid Valve InletMain Harness Thermostat Tank HeaterTank Heater Switch Tank Heater Relay 120V Dispensers only Pull component bracket out the front of the disIf the resistance measures as described, proceed to step Remove and discard the transformer TransformerWHI from BLK from Main Harness 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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