Bunn S/N DUAL068000 manual Service Tools Procedure to test components outputs, Left Brew Valve

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PROGRAMMING THE BREWER (cont.)

SERVICE TOOLS (cont.)

Procedure to test components (outputs):

1.Place brew funnels into rails on both sides of brewer.

2.Place a Soft Heat server beneath each brew fun- nel.

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 next function screen.

5.The display should read TEST OUTPUTS.

6.Press and release YES. The display should read

LEFT BREW VALVE.

7.To test LEFT BREW VALVE, press ON. If the brew valve is functional, water should run from the left brew side.

8.Press OFF to end flow of water.

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

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

10.To test LEFT BREW 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.To test LEFT SERVER, press ON. If the server and the sensor are functional, the light on the lower right corner of the server will illuminate.

17.Press OFF to end testing of server.

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

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

20.To test REFILL VALVE, press ON. If the refill valve

is functional, the sound of the valve operating will be heard.

21.Press OFF to end testing of refill valve.

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

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

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

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

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

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

27.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.

28.Press NEXT to return to TEST OUTPUTS.

29.To exit SERVICE TOOLS, press and release either ON/OFF switches 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 funnels into rails on both sides of brewer.

2.Place a Soft Heat server beneath each brew fun- nel.

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

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Contents Dual SH DBC Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty IntroductionTable of Contents 00831.0000 User Notices00658.0000 00656.0000 37881.0000 03408.0004Electrical Requirements 230 volt ac modelsPlumbing HOOK-UP CE RequirementsPlumbing Requirements Operating Controls Coffee Brewing Initial SetupCleaning Glossary Programming Switches ProgrammingProgram Functions Level Programming the BrewerImportant Programming Notes Read Carefully Recipe Programing Methods Using a Smart Funnel and a G9-2T DBC or MHG GrinderNot using a Smart Funnel and/or a G9-2T DBC or MHG Grinder RecipesReturns LevelContinue To E To D To aContinue to F Program Flow DiagramContinue to B Return to a Left Brew Valve Byps OZ/M Units Setting Units of Measure Procedure for modifying units of measureThis function allows the operator to set Brew Procedure for Setting the RecipeSET NEW Recipe SET NEW Recipe Sizes DONE?Procedure to program the coffee name SET NEW RecipesOtherwise, press Next to display no Name RightTimes Review RECIPES/MODIFY RECIPES/SET UP no Name CoffeeProcedure for reviewing recipes Review RecipesBrew OZ Setting or Adjusting Brew VOL- Umes Done Coffee Name Modifyshownext Batches DONE? YESBypass Batches DONE?SET Pulse Brew Modifying pulse brewNO-NAME Left Modifyshownext SET Pulse BrewSET Pulse Brew Easy Pulse Setup DONE? SET Pulse Brew Enter TimesTIMES? SET Preinfusion Drip Time now displayed on non funnel lock units as well Procedure to modify drip timesSetup Complete Read % BypassAssign Recipes Procedure to copy settingsReads Copy Settings OnlyAre YOU SURE? Enable ADS?YOU SURE? SET TempRefill Range 20 to Procedure to set ready temperatureSET Temp SET ReadyBypass OZ/M Spray OZ/M Procedure to adjust the flow rate settingProcedures to calibrate the sprayhead flow rate Calibrate FlowRepeat steps 1 9 when calibrating the other side Repeat steps 1 8 when calibrating the other sideProcedures to calibrate the bypass flow rate Calibrate FlowBrew Counters Not resettableProcedures to view/reset the brew counters This function allows the operator to trackServer not in Place Funnel DetectServer Detect Service Tools Testing individual components outputsLeft Brew Valve Service Tools Procedure to test components outputsProcedure to test switches Nothing PressedProcedures to test coil frequency Service ToolsProcedures to test servers ERS?Factory Defaults Procedure to set factory defaultsScreen Displayed Possible Cause TroubleshootingDisable the Server Detect func- tion Screen Displayed TemperatureTroubleshooting Procedures Smart Funnel not fully inserted into the funnel railsControl Board/Thermistor failure Tank Heater failureTriac Failure Troubleshooting Data plate within +/- 10% Problem Possible Cause Troubleshooting ProcedureEquipment will not operate No power or incorrect voltage Brew cycle will not start No waterProblem Possible Cause Tank Heaters Power Possible CauseLimit Thermostat Problem TriacProblem Possible Cause Troubleshooting Procedures Level in server Consistently high or low beverage Brew Volume adjustmentWater temperature For each brew cycleAge, preinfusion, or pulse brew Tank Heaters Remove and clean lime off tankWeak beverage Incorrect Recipe TionsSchematic Wiring Diagram Dual SH with Smart Funnel DBCSchematic Wiring Diagram Dual SH DBC W/SMART Funnel Limit Thermostat MT1

S/N DUAL068000 specifications

The Bunn S/N DUAL068000 is a versatile and high-performance commercial coffee brewer designed for those who demand quality and efficiency in their coffee-making operations. This brewer is part of Bunn’s DUAL series, known for its innovative technology and robust construction, making it a favored choice among coffee shops, restaurants, and offices.

One of the standout features of the DUAL068000 is its dual brewing capability. This allows users to brew two different types of coffee simultaneously, ensuring a wide range of flavors and options for customers. The unit is equipped with two independent brewing chambers, each capable of producing a batch of coffee in a matter of minutes, which is ideal for high-volume settings.

The DUAL068000 utilizes Bunn’s state-of-the-art brewing technology, including its patented "Duo-Temp" brewing system. This technology ensures that water is heated to the optimal temperature, generally between 195°F and 205°F, for extracting the best flavors from coffee grounds. Furthermore, the unit features a precision digital control system with programmable settings, allowing users to fine-tune brew times and temperatures for consistent quality.

An innovative characteristic of the DUAL068000 is its energy efficiency. The brewer incorporates an energy-saving mode, reducing power consumption during off-peak hours without sacrificing performance when needed. This makes the brewer not only cost-effective but also environmentally friendly, aligning with the growing trend towards sustainability in the food and beverage industry.

In terms of construction, the Bunn S/N DUAL068000 boasts a durable stainless steel design, ensuring longevity and resistance to wear and tear. It is also designed with easy access to components for maintenance, making it convenient for operators to clean and service the machine as necessary.

Other notable features include an integrated hot water faucet for tea and instant beverages, the capability to brew into various container sizes, and a large reservoir that minimizes refill frequency.

In conclusion, the Bunn S/N DUAL068000 is an exemplary commercial coffee brewer that combines advanced technology, durable construction, and user-friendly features. Its dual brewing capability and energy-saving design make it a top choice for establishments looking to enhance their coffee offerings while maintaining efficiency and quality. With this brewer, businesses can cater to a diverse array of customer preferences, making it an invaluable asset in any beverage service environment.
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