Bunn JDF-2 manual Troubleshooting, Problem Probable Cause, All water LEDs flash

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TROUBLESHOOTING

A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department.

•Inspection, testing, and repair of electrical equipment should be performed only by qualified service person- nel.

•All electronic components have 120-240 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the application of external voltages may result in board failure.

•Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.

•Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.

•The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help to avoid twists and kinks in the tubing.

•Make certain that all plumbing connections are sealed and electrical connections tight and isolated.

•This brewer is heated at all times. Keep away from combustibles.

WARNING – • Exercise extreme caution when servicing electrical equipment.

•Unplug the brewer when servicing, except when electrical tests are specified.

•Follow recommended service procedures.

•Replace all protective shields or safety notices.

PROBLEM

PROBABLE CAUSE

REMEDY

All water LED's flash.

1. Bath water level low.

Access bath fill valve and top off bath tank.

Cold Water Circulation

All dispense stations not working or all water & refill LED's flash and beep 3 times.

Note: Cooling failure or excessive bath and cabinet temperatures for m ore than 4 hours will result in touchpad lockout or no dispense. Note: Reset faul/timer by unplug- ging unit.

1.Cabinet cooling fan.

2.Bath recirculation pump.

3.Restricted water flow to cabinet water coil and bath.

Replace fan (24vdc).

Note: Fan receives power when door switch is closed.

A)If not running, replace pump (120vac).

B)If no power, replace control board.

Clean or replace cabinet water strainer or recirculating manifold or check for kinked hose.

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Contents Phone 217 529-6601 FAX 217 JDF-2BUNN-O-MATIC Commercial Product Warranty User Notices ContentsElectrical Requirements Initial SET-UPPlumbing Requirements CE RequirementsInitial Fill Plumbing RequirementsPriming LoadingPlumbing Hookup Frozen ConcentratesRefrigeration Switch Refrigeration SwitchSanitize Switch Operating ControlsOperating Controls Dispenser USE Press and Hold Models Refer to FigPortion Control Models Refer to Fig Cleaning & Preventive Maintenance Daily Parts WashingWeekly Sanitizing Cleaning Annually Replace Pump Tubing Cleaning Monthly Clean Condenser Air FilterTemperature Compensated Refractometer Method Adjustment & Optional SettingsMix Ratio Product Brix %Per 3-second test Cup Size Programming Portion Control Dispensers Only Adjustment & Optional Settings Pump Speed ProgrammingService Lockout Adjustment & Optional Settings Dispenser LockoutPassword Protection Adjustment & Optional SettingsBeeper Fault Dispense Fault ListCooling Fault List DBC display FaultRefill indicator when concentrate out is detected Dip Switch Function ListControls Off Audio feedback during dispensesFunction List Problem Probable Cause TroubleshootingAccess bath fill valve and top off bath tank All water LEDs flashProblem TroubleshootingCooling system failure or DBC fault RemedyDispense touchpad Bottle adapter switch mem- braneRefill LED not extinguishing All stations dispense concentrate Main water supply OnlyProblem Probable Cause Remedy Concentrate onlyWater only Cant access programming Programming password feature Initial fill/setupPassword Nect fittingsIs powered from the step-down Fault codesOnce water is set, adjust motor Step-down transformerStation Difficulty brixing and/or weak bev Pump tubing ErageUse of portable water pump Difficulty brixing bag-in-boxCoolant Schematic Diagram Schematic Wiring Diagram Schematic Wiring Diagram Schematic Wiring Diagram JDF-2 Control Panel Circuit Schematic Wiring Diagram JDF-2 Remaining Circuits

JDF-2 specifications

The Bunn JDF-2 is a cutting-edge coffee brewing system designed for high-performance environments such as coffee shops, restaurants, and offices. This versatile machine combines advanced brewing technologies with user-friendly features, making it a popular choice among coffee aficionados and professionals alike.

One of the standout features of the Bunn JDF-2 is its ability to brew coffee quickly and efficiently. The machine boasts an innovative brewing system that utilizes an advanced heat exchange technology, ensuring that water is heated to the optimal brewing temperature in no time. This results in a rapid brew time, allowing operators to serve freshly brewed coffee continuously, even during peak hours.

The Bunn JDF-2 is equipped with a digital control interface that allows users to customize their brewing settings with ease. This interface features adjustable brew times, water temperatures, and batch sizes, allowing baristas to fine-tune each brew to achieve the perfect flavor profile. Additionally, the machine can store multiple recipe presets, enabling quick access to different brewing styles.

Durability and reliability are also key characteristics of the Bunn JDF-2. Constructed from high-quality materials, it is designed to withstand the rigors of everyday use. This commercial-grade machine is built to last, ensuring that businesses can rely on it for consistent performance over time. The JDF-2 also incorporates a variety of safety features, including automatic shut-off mechanisms and easy-access components for maintenance, making it a safe choice for busy environments.

The Bunn JDF-2 employs a dual brewing system, which can brew both regular and decaffeinated coffee simultaneously. This feature is particularly beneficial for establishments that cater to diverse customer preferences. The machine's capabilities also extend to brewing specialty beverages, further enhancing its versatility.

In terms of design, the Bunn JDF-2 presents a sleek and modern aesthetic that complements any coffee shop or commercial kitchen. Its compact size allows for easy integration into existing workflows, maximizing space efficiency without compromising performance.

Overall, the Bunn JDF-2 stands out as a premier choice for those seeking a powerful, efficient, and user-friendly coffee brewing system. With its advanced technologies, customizable settings, and robust construction, it meets the demands of both high-volume coffee operations and discerning coffee lovers.
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