Bunn S/N DUAL068000 manual Problem Possible Cause Troubleshooting Procedures

Page 49

TROUBLESHOOTING (cont.)

Problem

Possible Cause

Troubleshooting Procedures

Spitting or unusual steaming from

3. Electronic control board

Perform the previous procedure

sprayhead or air vents. (Water too

 

for testing triacs. If the voltage

hot) (cont.)

 

measured is very low or zero, then

 

 

substitute a control board known to

 

 

be in good working order.

Inconsistent beverage level in

1. Strainer/flow control (.750

(A) Direction of flow arrow must be

server.

GPM)

pointing towards the brewer.

 

 

(B) Remove the strainer/flow control

 

 

and check for obstructions. Clear or

 

 

replace.

 

2. Improper water pressure

Check operating water pressure to

 

 

the brewer. It must be between 20

 

 

and 90 psi (138 and 620 kPa).

 

3. Brew Valve

Test the Brew Valve. Refer to Testing

 

 

Individual Components. Turn the

 

 

valve on for 30 seconds and collect

 

 

the water dispensed from the spray-

 

 

head. Repeat the test several times

 

 

to confirm a consistent volume of

 

 

dispensed water. If not consistent,

 

 

check the valve, tubing and spray-

 

 

head for lime buildup.

 

4. Bypass Valve

If bypass is being used on the

 

 

inconsistent brewing recipe, test

 

 

the Bypass Valve. Refer to Testing

 

 

Individual Components. Turn the

 

 

valve on for 30 seconds and collect

 

 

the water collected from the bypass

 

 

opening. Repeat the test several

 

 

times to confirm a consistent volume

 

 

of dispensed water. If not consistent,

 

 

check the valve, tubing and bypass

 

 

opening for lime buildup.

 

5. Lime buildup

Inspect for lime buildup that could

 

 

block the tank, tank fittings, tubing,

 

 

valves and sprayhead.

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29877-3 062005

 

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Contents Phone 217 529-6601 FAX 217 Dual SH DBCIntroduction BUNN-O-MATIC Commercial Product WarrantyTable of Contents 00658.0000 User Notices00831.0000 00656.0000 37881.0000 03408.0004230 volt ac models Electrical RequirementsPlumbing Requirements CE RequirementsPlumbing HOOK-UP Operating Controls Cleaning Initial SetupCoffee Brewing Glossary Programming Programming SwitchesImportant Programming Notes Read Carefully Programming the BrewerProgram Functions Level Not using a Smart Funnel and/or a G9-2T DBC or MHG Grinder Using a Smart Funnel and a G9-2T DBC or MHG GrinderRecipe Programing Methods RecipesContinue To E To D LevelReturns To aContinue to B Return to a Program Flow DiagramContinue to F Left Brew Valve Byps OZ/M Procedure for modifying units of measure Units Setting Units of MeasureSET NEW Recipe Procedure for Setting the RecipeThis function allows the operator to set Brew Sizes DONE? SET NEW RecipeSET NEW Recipes Procedure to program the coffee nameRight Otherwise, press Next to display no NameProcedure for reviewing recipes Review RECIPES/MODIFY RECIPES/SET UP no Name CoffeeTimes Review RecipesDone Coffee Name Modifyshownext Batches DONE? YES Brew OZ Setting or Adjusting Brew VOL- UmesBatches DONE? BypassModifying pulse brew SET Pulse BrewSET Pulse Brew NO-NAME Left ModifyshownextSET Pulse Brew Easy Pulse Setup TIMES? SET Pulse Brew Enter TimesDONE? SET Preinfusion Setup Complete Procedure to modify drip timesDrip Time now displayed on non funnel lock units as well Read % BypassReads Copy Settings Procedure to copy settingsAssign Recipes OnlyYOU SURE? Enable ADS?Are YOU SURE? SET TempSET Temp Procedure to set ready temperatureRefill Range 20 to SET ReadyProcedures to calibrate the sprayhead flow rate Spray OZ/M Procedure to adjust the flow rate settingBypass OZ/M Calibrate FlowProcedures to calibrate the bypass flow rate Repeat steps 1 8 when calibrating the other sideRepeat steps 1 9 when calibrating the other side Calibrate FlowProcedures to view/reset the brew counters Not resettableBrew Counters This function allows the operator to trackServer Detect Funnel DetectServer not in Place Testing individual components outputs Service ToolsProcedure to test switches Service Tools Procedure to test components outputsLeft Brew Valve Nothing PressedProcedures to test servers Service ToolsProcedures to test coil frequency ERS?Procedure to set factory defaults Factory DefaultsDisable the Server Detect func- tion TroubleshootingScreen Displayed Possible Cause Troubleshooting Procedures TemperatureScreen Displayed Smart Funnel not fully inserted into the funnel railsTriac Failure Tank Heater failureControl Board/Thermistor failure Troubleshooting Equipment will not operate No power or incorrect voltage Problem Possible Cause Troubleshooting ProcedureData plate within +/- 10% Brew cycle will not start No waterProblem Possible Cause Limit Thermostat Power Possible CauseTank Heaters Triac ProblemProblem Possible Cause Troubleshooting Procedures Water temperature Consistently high or low beverage Brew Volume adjustmentLevel in server For each brew cycleWeak beverage Incorrect Recipe Tank Heaters Remove and clean lime off tankAge, preinfusion, or pulse brew TionsDual SH with Smart Funnel DBC Schematic Wiring DiagramSchematic 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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