Bunn DUAL068000 manual Service Tools, Procedure to test switches, Nothing Pressed

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PROGRAMMING THE BREWER (cont.)

SERVICE TOOLS (cont.)

NOTE: To bypass testing any component, press NEXT to advance to the next one, without testing the previ- ous component.

10.To test LEFT BYPASS, press ON. If the bypass valve is functional, water should run from the left brew bypass.

11.Press OFF to end flow of water.

12.Press NEXT to advance to the next component to be tested.

13.To test LEFT FUNNEL LOCK, press ON. If the fun- nel lock is functional, the lock will come down to hold the funnel in place.

14.Press OFF to retract the funnel lock.

15.Press NEXT to advance to the next component to be tested.

16.Follow steps 7 through 15 to test the right side components.

17.To test REFILL VALVE, press ON. If the refill valve is functional, the sound of the valve operating will be heard.

18.Press OFF to end testing of refill valve.

19.Press NEXT to advance to the next component to be tested.

20.To test TANK HEATERS, connect a voltmeter across each of the tank heaters to check for voltage.

21.Press ON. The correct voltage should be present at the heater terminals.

22.Press OFF to end testing of the tank heaters.

NOTE: The tank heater will automatically turn off if left on too long.

23.After testing the tank heater, press NEXT to advance to the next test.

24.The HEATER CONTACTOR is used only on certain models. Check the machine schematic to see if the contactor is present. Connect a voltmeter across a tank heater that is operated by the contactor and press ON to check that correct voltage is present. Press OFF and confirm the voltage is zero.

25.Press NEXT to return to TEST OUTPUTS.

26.o exit SERVICE TOOLS, press and release the ON/ OFF switch (either on DUAL brewers) located on the front switch panel. This will return to the MAIN SCREEN.

Procedure to test switches:

This function allows the operator to test the opera- tion of the individual switches on the front panel.

1.Place brew funnel(s) into rails on the brewer (both sides on DUAL brewers).

2.Place a server beneath each brew funnel.

3.Press and hold the upper right hidden switch until display reads UNITS. Release the switch. Continue to press and release switch until SERVICE TOOLS appears.

4.Press YES to run tests on various components and outputs within the brewer. (Pressing NO will exit this function and advance to the next function screen.)

5.The display should read TEST OUTPUTS.

6.In TEST OUTPUTS screen, press NO. This advances to TEST SWITCHES.

7.Pressing NO in this screen will advance to the next function. Press YES in the TEST SWITCHES screen to test the switches. The display will read

NOTHING PRESSED.

8.From this screen, press any of the switches on the front of the brewer except the upper right hidden switch. While the switch is pressed, the display shows the name of that switch. If the name does not appear, or if it remains after the switch has been released, the switch is defective. Each switch can be tested in this manner.

9.After all switches have been tested, press and re- lease the right hidden switch (®). This will return to TEST SWITCHES?. Press and release switch again to advance to TEST SERVERS?. Another alternative is to press and release the ON/OFF switch (either on DUAL brewers) located on the front switch panel. This will exit TEST SWITCHES and return to the MAIN SCREEN.

Procedures to test coil frequency:

1.Place brew funnel(s) into funnel rails of the brewer (both side on DUAL brewers).

2.Place a ThermoFresh server beneath brew funnel(s).

3.Press and hold the upper right hidden switch until the display reads UNITS. Release the switch. Continue pressing and releasing the upper right hidden switch until SERVICE TOOLS appears.

4.Pressing NO will exit this function and advance to

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Contents Dualtf DBC BUNN-O-MATIC Commercial Product Warranty Introduction Glossary Programming Switches ProgrammingOutputs Main Screen Programming Lockout Switch mounted on main control boardScreen Brew LockoutRecipes Program Functions LevelDRIP-OUT Times Level Continue toProgram Flow Diagram Programming the BrewerProgram Flow Diagram Units Setting Units of Measure Procedure for modifying units of measureSET NEW Recipe Procedure for Setting the RecipeRecipe SET NEW Recipe Sizes DONE?Procedure to program the coffee name Review RECIPES? No YES Review Recipes Review RECIPES/MODIFY RECIPES/SET UP no Name Coffee FavorsProcedure for reviewing recipes WAS the Last RecipeBrew OZ Setting or Adjusting Brew VOL- Umes Review RECIPES? NoyesBypass SET Pulse Brew Modifying pulse brewSET Pulse Brew NO-NAME Left Modify Show NextSET Pulse Brew Easy Pulse Setup TIMES? SET Pulse Brew Enter TimesDONE? SET Preinfusion Batches DONE?Setup Complete Procedure to modify drip timesDrip Time now displayed on non funnel lock units as well Procedure to copy settings Procedure to assign recipesCopy Settings no Name Coffee Settings only Assign RecipesAre YOU SURE? Enable ADS?YOU SURE? SET TempSET Ready Procedure to set ready temperatureSET Temp Refill Range 20 toSpray OZ/M Single Brewers Procedure to adjust the flow rate settingSpray OZ/M Dual Brewers Bypass OZ/M Single Brewers Bypass OZ/M Dual BrewersCalibrate Flow Procedures to calibrate the sprayhead flow rateCalibrate Flow ? Calibrate Flow Procedures to calibrate the bypass flow rate Brate Bypass .. Press Brew to StartProcedures to view/reset the brew counters Brew CountersFunnel Detect Service ToolsLeft Brew Valve Procedures to test coil frequency Service ToolsProcedure to test switches Nothing PressedYES Procedure to set factory defaults Main Screen Factory DefaultsFREQUENCY?
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DUAL068000 specifications

The Bunn DUAL068000 is an advanced commercial coffee maker designed for high-volume environments where speed, efficiency, and quality are paramount. This dual-brew coffee maker seamlessly combines performance with innovative technologies to meet the demands of cafes, restaurants, and convenience stores.

One of the standout features of the DUAL068000 is its dual brewing capabilities. It allows for the simultaneous brewing of two different types of coffee. This flexibility is particularly valuable in busy settings where diverse customer preferences must be accommodated. Operators can brew a full pot of drip coffee while simultaneously preparing a specialty coffee drink, optimizing workflow and minimizing wait times.

Equipped with a powerful heating element, this coffee maker can brew a full 12-cup pot in under four minutes. This rapid brewing time ensures that fresh coffee is always available, keeping customers satisfied and coming back for more. The DUAL068000 utilizes a unique hot water faucet that provides water on demand, making it easy to prepare tea or other hot beverages without disruption to the brewing process.

The DUAL068000 incorporates Bunn’s patented brewing technology, which includes temperature control and precision brewing features. The machine maintains consistency in water temperature throughout the brewing cycle, ensuring optimal extraction and rich flavor profiles in every cup. Its adjustable brew time allows operators to customize the strength of their coffee according to specific needs.

In terms of durability, the Bunn DUAL068000 is built to withstand the rigors of commercial use. Made from high-quality stainless steel, it offers a robust design that is both easy to clean and resistant to wear and tear over time. The easy-to-navigate control panel provides intuitive operation, allowing staff to quickly adjust settings without extensive training.

Another key characteristic of this machine is its energy-efficient design. Bunn has incorporated features that minimize energy consumption while maximizing output, making the DUAL068000 an eco-friendly choice for coffee businesses seeking to reduce their carbon footprint.

Overall, the Bunn DUAL068000 coffee maker combines reliability, efficiency, and flexibility, making it an ideal choice for any establishment looking to serve exceptional coffee quickly and efficiently. Its advanced technology and robust build quality position it as a leader in the commercial coffee maker market.
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