Bunn POWDER AUTO FILL service manual Troubleshooting, Problem Probable Cause

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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 personnel.

•All electronic components have 120 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.

•Keep away from combustibles.

WARNING – • Exercise extreme caution when servicing electrical equipment.

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

•Follow recommended service procedures

•Replace all protective shields or safety notices

PROBLEM

PROBABLE CAUSE

REMEDY

CDS and Powder Auto-Fill do not run - Main power indicator on CDS drawer front OFF

Product level in CDS is lower than level Probe - CDS running; Powder Auto-Fill door lamp is OFF

Product level in CDS is lower than level Probe - CDS running; Powder Auto-Fill door lamp flashes ON and

OFF

1.CDS power cord disconnected or main power switch in 0 position.

1.The CDS DAY/NIGHT switch in the NIGHT position.

2.The CDS DAY/NIGHT timer in the NIGHT position.

3.Powder Auto-Fill power cord dis- connected.

4.Powder Auto-Fill main power switch in OFF position.

5.Powder Auto-Fill door is open.

1. Low product in Powder Auto-Fill.

Check that the power cord is con- nected to proper electrical source and that the CDS main power switch is in the 1 position.

1.The CDS DAY/NIGHT switch should be in the DAY position.

2.Reprogram the CDS DAY/NIGHT timer.

3.Check that the Powder Auto-Fill is plugged into the back of the CDS auger motor cover.

4.Select the ON position of the main power switch.

5.The Powder Auto-Fill door should be closed securely.

Remove hopper and fill with pow- dered mix.

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Contents Bunn Powder Auto Fill Introduction WarrantyInitial SET-UP User Notices Operating Instructions Adjustments Rinse and dry each item thoroughly before reas- sembling CleaningRecommended Daily Cleaning and Maintenance Tips Fault List Normal operation Powder Auto-Fill ready toDispense Door not closedTroubleshooting Problem Probable CauseCDS product tastes watery or sugary ProblemRemedy Problem Probable Cause Remedy Procedures. See Improper adjustment of productInstall a regulator if necessary to Product overflows CDS hopper Control Board and ProbeService Component AccessAuger Drive Components Hopper LidRetainer Clip Spacer Dust Seal Hopper BaseDiagrams and check wiring harness Auger Drive MotorFrother and MIXING/WHIPPER Chamber Mixing ChamberWhipper Motor Volts ac for 120 volt models Volts ac for 230 volt CE modelsInstall dispense tip into the bottom of the whipper chamber Whipper MotorIf voltage is present as described, proceed to #5 If voltage is present as described, proceed to #9Test Procedure Low Product Detect Instal the new control board using the four #6-32 keps nuts Remove the control boardLocation TEST/SERVICE SwitchDisconnect the wires from the switch terminals Main Power ON/OFF Switch Main Power ON/OFF SwitchLamp Cord Assembly Refer to when reconnecting the wiresRemove new nut and washer from new lamp cord connector Lamp Cord ConnectorDisconnect the lamp cord from the lamp cord connector Lamp HOLDER/SOCKET Assembly Close the dispenser doorTransformer TransformerPotentiometer PotentiometerHopper Level Indicator Hopper Level IndicatorHopper Switch Hopper SwitchDoor Switch Door SwitchAdjustments Pressure Regulator and Needle ValveDispense Solenoid Valve Dispense Solenoid Valve LocationWiring Diagrams Schematic Wiring Diagram PAF BLK REDWiring Diagrams Schematic Wiring Diagram Pafa

POWDER AUTO FILL specifications

The Bunn Powder Auto Fill is a cutting-edge coffee brewing system designed to enhance efficiency and precision in commercial environments. This innovative machine simplifies the brewing process by incorporating automated features that ensure consistent quality and optimal performance.

One of the standout features of the Bunn Powder Auto Fill is its ability to automatically dispense powdered beverage mixes. This is made possible through advanced technology that streamlines the process, reducing the need for manual input. With the push of a button, operators can quickly prepare a variety of specialty beverages, including cappuccinos, lattes, and flavored coffee drinks. This not only saves time but also minimizes the likelihood of human error in measurements, ensuring each cup is consistently brewed to perfection.

The Bunn Powder Auto Fill is designed with versatility in mind. It accommodates a wide range of powdered ingredients, allowing businesses to offer an extensive menu without investing in multiple machines. This adaptability makes it an ideal solution for coffee shops, convenience stores, and other establishments where customer preferences may vary.

Moreover, the machine features a robust heating system that provides rapid brewing capabilities. This ensures that beverages are served at the optimal temperature, enhancing the overall customer experience. The integrated hot water faucet allows for quick access to hot water, making it easy to prepare additional drinks or even food items like soups and oatmeal.

Durability is another key characteristic of the Bunn Powder Auto Fill. Built with high-quality materials to withstand the rigors of daily use, this machine is designed to deliver reliable performance over time. Its compact and sleek design allows for easy placement in any setting, taking up minimal counter space while blending seamlessly with existing décor.

Additionally, the Bunn Powder Auto Fill incorporates user-friendly controls and displays. This intuitive interface allows staff to quickly familiarize themselves with the machine's operation, which is crucial in high-demand environments. The system also features programmable settings, enabling users to customize brew strengths and portion sizes according to customer preferences.

In conclusion, the Bunn Powder Auto Fill is a game-changer for businesses looking to elevate their beverage offerings. With its automation, versatility, reliability, and user-centric design, this machine not only boosts efficiency but also enhances the quality of every cup served. Whether in a bustling café or a busy convenience store, the Bunn Powder Auto Fill stands out as a smart investment for any beverage-focused establishment.
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