Bunn S/N DUAL068000 manual Problem, Triac

Page 48

TROUBLESHOOTING (cont.)

Problem

Possible Cause

Water will not heat or display shows

3. Triac

HEATING TIME TOO LONG (cont.)

 

Troubleshooting Procedures

Remove power from the brewer. Connect a voltmeter across one of the tank heaters. Reapply power to the brewer and refer to Testing Individual Components. If the full supply voltage is measured when the tank heater is turned on, and zero voltage is measured with the triac off, then the triac is good. If half the supply voltage is measured, the triac is defective. If very low, or zero voltage is measured, there could be a defective triac or a defective control board.

Spitting or unusual steaming from sprayhead or air vents. (Water too hot)

4.Electronic Control Board

1.Triac

Perform the above procedure for testing triacs. If the voltage mea- sured is very low or zero, then substitute a control board known to be in good working order.

Remove power from the brewer. Connect a voltmeter across one of the tank heaters. Reapply power to the brewer and refer to Testing Individual Components. If the full supply voltage is measured when the tank heater is turned on, and zero voltage is measured with the triac off, then the triac is good. If half the supply voltage is measured, the triac is defective. If very low, or zero voltage is measured, there could be a defective triac or a defective control board.

2. Lime Buildup

CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water condi- tions. Excessive mineral buildup on stainless steel surfaces can initiate corrosive reactions resulting in seri- ous leaks.

Page 48

Inspect the tank assembly for ex- cessive lime deposits. Delime as required.

29877-3 062005

Page 47 Page 49
Image 48
Page 47 Page 49
Contents Dual SH DBC Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty IntroductionTable of Contents User Notices 00658.000000831.0000 00656.0000 37881.0000 03408.0004Electrical Requirements 230 volt ac modelsCE Requirements Plumbing RequirementsPlumbing HOOK-UP Operating Controls Initial Setup CleaningCoffee Brewing Glossary Programming Switches ProgrammingProgramming the Brewer Important Programming Notes Read CarefullyProgram Functions Level Using a Smart Funnel and a G9-2T DBC or MHG Grinder Not using a Smart Funnel and/or a G9-2T DBC or MHG GrinderRecipe Programing Methods RecipesLevel Continue To E To DReturns To aProgram Flow Diagram Continue to B Return to aContinue to F Left Brew Valve Byps OZ/M Units Setting Units of Measure Procedure for modifying units of measureProcedure for Setting the Recipe SET NEW RecipeThis function allows the operator to set Brew SET NEW Recipe Sizes DONE?Procedure to program the coffee name SET NEW RecipesOtherwise, press Next to display no Name RightReview RECIPES/MODIFY RECIPES/SET UP no Name Coffee Procedure for reviewing recipesTimes 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 SET Pulse Brew Enter Times TIMES?DONE? SET Preinfusion Procedure to modify drip times Setup CompleteDrip Time now displayed on non funnel lock units as well Read % BypassProcedure to copy settings Reads Copy SettingsAssign Recipes OnlyEnable ADS? YOU SURE?Are YOU SURE? SET TempProcedure to set ready temperature SET TempRefill Range 20 to SET ReadySpray OZ/M Procedure to adjust the flow rate setting Procedures to calibrate the sprayhead flow rateBypass OZ/M Calibrate FlowRepeat steps 1 8 when calibrating the other side Procedures to calibrate the bypass flow rateRepeat steps 1 9 when calibrating the other side Calibrate FlowNot resettable Procedures to view/reset the brew countersBrew Counters This function allows the operator to trackFunnel Detect Server DetectServer not in Place Service Tools Testing individual components outputsService Tools Procedure to test components outputs Procedure to test switchesLeft Brew Valve Nothing PressedService Tools Procedures to test serversProcedures to test coil frequency ERS?Factory Defaults Procedure to set factory defaultsTroubleshooting Disable the Server Detect func- tionScreen Displayed Possible Cause Temperature Troubleshooting ProceduresScreen Displayed Smart Funnel not fully inserted into the funnel railsTank Heater failure Triac FailureControl Board/Thermistor failure Troubleshooting Problem Possible Cause Troubleshooting Procedure Equipment will not operate No power or incorrect voltageData plate within +/- 10% Brew cycle will not start No waterProblem Possible Cause Power Possible Cause Limit ThermostatTank Heaters Problem TriacProblem Possible Cause Troubleshooting Procedures Consistently high or low beverage Brew Volume adjustment Water temperatureLevel in server For each brew cycleTank Heaters Remove and clean lime off tank Weak beverage Incorrect RecipeAge, preinfusion, or pulse brew 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.
Top Page Image Contents