Bunn Dual SH BrewWISE Installation guide

BUNN®TECHNICAL TRAINING
Dual SH BrewWISE®DBC

Index
Unit 1: Installation
Site Requirements..............................................................................................................4
Location of the Serial Number ..........................................................................................4
Water Supply Install ...........................................................................................................4
Electrical Install..................................................................................................................4
Initial Start-Up.....................................................................................................................5
Unit 2: Setup
Setup and Programming....................................................................................................7
Programming Lockout.................................................................................................7
Level 1 Programming.........................................................................................................7
Level 2 Programming.........................................................................................................7
Level 3 Programming.........................................................................................................9
Calibrating Flow Rate.........................................................................................................9
Check and Adjust the Dispense Valve Flow Rate.....................................................9
Check and Adjust the Bypass Valve Flow Rate ........................................................9
Programming the Recipes.................................................................................................10
Default Values.....................................................................................................................11
Unit 3: Machine Composition
Exterior Overview...............................................................................................................13
Product Outlets and Removable Parts ......................................................................13
User Interface...............................................................................................................13
Accessing the Inside of the Brewer..................................................................................13
Machine Function and Operations....................................................................................14
Main Control Board......................................................................................................14
Filling System...............................................................................................................14
Heating System............................................................................................................15
Dispensing System......................................................................................................15
Coffee Holding System................................................................................................16
The Soft Heat®Server...........................................................................................17
Unit 4: Preventive Maintenance
Preventive Maintenance.....................................................................................................19
PM Steps .............................................................................................................................19
Unit 5: Troubleshooting
Service Tools ......................................................................................................................22
Test Outputs.................................................................................................................22
Test Switches ...............................................................................................................23
Test Servers..................................................................................................................23
Test Frequency.............................................................................................................23
Service Fault Messages.....................................................................................................23
Operator Fault Messages...................................................................................................24
Triac Map.............................................................................................................................25
© 2009 Bunn-O-Matic Corporation. All Rights Reserved
Rev. A

Unit Objectives
UNIT 1 INSTALLATION
Given a realistic scenario depicting a new site install, the learner will be able to install and setup the brewer
for customer turnover without error.
Given a new machine, all the necessary tools and safety equipment, the learner will be able to install
the brewer without error.
The learner will be able to verify that the site requirements have been met.
The learner will be able to locate and document the serial number.
The learner will be able to hook up the water supply.
The learner will be able to hook up the electrical supply.

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Installation
Site Requirements
Space
Counter able to support the weight of the machine, approximately 185 pounds wet•
Counter area able to support machine placement 35.8”H x 18”W x 21.2”D•
Water Treatment
Sediment filtration to reduce large particles•
Taste and odor filter to remove chlorine•
Scale filtration as needed•
For best results a Bunn Easy Clear• ®filtration system should be used
Plumbing
¼” flare fitting on the machine•
Dedicate water supply with shut-off•
Connected to the cold water supply•
Water pressure 20-100psi, 50psi if regulator is needed•
Electrical
120/208VAC or 120/240VAC•
3 wire plus ground (Neutral, L1, L2, ground)•
30 amp dedicated circuit (breaker, plug, and receptacle)•
Receptacle within 5 feet of machine•
If a power cord is not attached to the machine the technician will have to supply and install the cord•
Location of the Serial Number
The machine’s serial number is located on the data plate which is attached to the bottom of the front panel. The se-
rial number begins with the word DUAL. The complete serial number will need to be documented on all work orders
and warranty tags.
Water Supply Install
Step 1: Check water pressure, install a regulator if above 90psi.
Step 2: Flush water lines.
Step 3: Install shut-off valve.
Step 4: Attach the water line to the ¼” flare fitting on the bottom of the
machine.
Electrical Install
Refer to the electrical section of the machine’s data plate to select the
proper power cord, plug and receptacle for the brewer. An electrician must provide electrical service as specified in
conformance with all local, state, and federal electrical codes.
Since the brewer is thermostatically controlled, 100% of the circuit breaker can be used. This will allow the machine
to be installed on a 30 amp circuit instead of a 50 amp circuit.
Step 1: Remove the front panel (11 flat head screws).
Step 2: Feed the power cord through the strain relief in the bottom of the machine.
Water Supply
20-90 psi
1/4” flare fitting

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Step 3: Attach the wire ends to the terminal block.
Step 4: Attach the ground wire to connector on the frame cross bar.
Step 5: Check that all connections are tight.
Step 6: Tighten the strain relief and replace the front panel.
Step 7: Plug the unit into the power source.
Initial Start-Up
Note: If the brewer has a serial number prior to DUAL0680000 the machine does not have
an On/Off switch and will turn on when the unit is plugged in.
Step 1: Flip the On/Off switch to the On position.
When the machine is turned on, it will begin to fill the tank. After the tank fills the machine
will automatically begin the heating cycle. This will take approximately 20 minutes.
Once the water temperature has reached the programmed Brew Lockout temperature it will
display the ready screen. The machine will continue to heat until it reaches its programmed
shut-off temperature.
PLEASE WAIT
TANK FILLING
HEATING
READY TO BREW
WATER TEMP ###°
WATER TEMP 200°

Unit Objectives
UNIT 2 SETUP
Given a realistic scenario depicting a new site install, the learner will be able to install and setup the brewer
for customer turnover without error.
Given an installed machine, all the necessary tools and safety equipment, the learner will be able to
set the machine up for initial operation.
The learner will be able to power on the machine.
The learner will be able to perform the calibrations.

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Setup and Programming
The BrewWISE®software is the latest evolution of BUNN’s digital brewer control (DBC®) system. The software allows
precise brewing control and multiple extractions recipes to be stored on the brewer and onboard troubleshooting
capabilities for the technician. The software also allows the brewer to communicate with a DBC®grinder, to reduce
operator errors when selecting products and batch sizes.
Accessing and using the brewer’s programming features is done from the front panel and requires no special tools.
The programming menu is accessed by pressing the hidden switch, located under the trademark symbol, on the right
side of the Bunn logo. The hidden switch on the left side will allow you to scroll backwards.
1 Right Hidden Switch: This is used to access the programming mode and is also used to scroll forward through the
function list.
2 Left Hidden Switch: This is used to scroll backwards through the function list.
3 Digital (lower left under the display): This is used to select options that appear on the display during programming.
4 Brewer (center under the display): This is used to select options that appear on the display during programming.
5 Control (lower right under the display): This is used to select options that appear on the display during
programming.
Programming Lockout
If the programming cannot be accessed then the programming lockout switch
is in the Disable position. The switch is located on the control board. Remove
the top panel, locate the switch and place it into the Enable position.
Level 1 Programming
Press the hidden switch for one second to access.
Level 2 Programming
Press and hold the hidden switch for 5 seconds.
This screen is for setting water volumes for the Brew (dump) valve and the Bypass valve.
Pulse Brewing will also be found in this screen.
PROGRAM
ENABLE
DISABLE
21
345
BREW LOCKOUT ?
ON OFFDONE
SET NEW RECIPE ?
NO YES

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This screen allows the user to preview recipes that are already programmed you can
also modify or set the recipes manually in this screen.
This function allows for assigning a coffee name other than No-Name to the brew switch.
Note: This function is only on machines with serial number DUAL0680000 and later.
If one NO NAME coffee is set up, this function allows you to copy the settings to the
opposite side.
This screen allows the operator to utilize the screen for advertising; a tag card can be
programmed with your message.
Sets the temperature of the brew tank.. Range of 185°F to 205°F
This function sets the minimum temperature to start a brew cycle (BREW LOCKOUT).
Range of 179°F min. to 203°F max. (or within minimum 2° of tank target temp).
Set the sensitivity of the refill circuit. Range of 20 (Open circuit) to 230 (Short circuit).
Can be adjusted for different water conditions. Increase number for very soft water.
Default is 155
Enter new number for each spray head, after doing CALIBRATE FLOW and measuring
output.
Enter new number for each spray head, after doing CALIBRATE FLOW and measuring
output.
Enter new number for each bypass valve, after doing CALIBRATE FLOW and measuring
output.
Enter new number for each bypass valve, after doing CALIBRATE FLOW and measuring
output.
Technician can measure actual flow rate through all 4 valves with 60 second flow test.
Allows the operator to track the number of brew cycles completed left, right, Combined
(resettable) & Combined (no reset).
YES allows the operator to prevent the start of a brew cycle, must have a Smart funnel.
NO does not need Smart funnel to brew.
Prevents the start of a brew cycle if a Soft Heat®server is not in place.
REVIEW RECIPES ?
NO YES
COPY SETTINGS ?
NO YES
ENABLE ADS ?
NO YESDONE
SET TEMP 200
O
(-) (+)DONE
SET READY 195
O
(-) (+)DONE
XXX REFILL 155
(-) (+)DONE
L SPRAY Oz/M: 39.2
(-) (+)DONE
R SPRAY Oz/M: 39.2
(-) (+)DONE
L BYPASS Oz/M: 24.1
(-) (+)DONE
R BYPASS Oz/M: 24.1
(-) (+)DONE
CALIBRATE FLOW ?
NO YES
BREW COUNTERS ?
NO YES
FUNNEL DETECT ?
NO DONE YES
SERVER DETECT ?
NO DONE YES
ASSIGN RECIPE ?
NO YES

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Allows operator to erase anything previously set and returns to factory settings. You
will lose calibrations, recipes, adjusted brew volumes, etc.
Allows technician 4 test modes, operate all load components, test touch pad switches,
test server detection, and test frequency of funnel sensing coils.
Level 3 Programming
Press and hold the right hidden switch for 10 seconds.
Insert a digital thermometer probe into the water tank and wait for the temperature reading to stabilize.
Calibrating Flow Rate
Prior to programming the machine or brewing any coffee, the flow rates for the dispense and by-pass valves on the
left-hand and right-hand sides must be calibrated. The flow rate will vary location to location and machine to ma-
chine.
Access Level 2 Programming.
Check and Adjust the Dispense Valve Flow Rate
Step 1: Scroll to Calibrate Flow select Yes.
Step 2: Select Yes at the next screen to dispense from the brew valves.
Step 3: Ensure the sprayhead and funnel are in place and put a container, measuring pitcher or server, underneath
the funnel, select Yes.
Step 4: To activate the flow rate check, press the Brew button of the side of the machine you wish to check.
Step 5: The valve will open for 60 seconds. Once all of the water has dripped out, input the volume into the brewer.
Check and Adjust the Bypass Valve Flow Rate
Step 1: Scroll to Calibrate Flow select Yes.
Step 2: Select No at the next screen to dispense from the brew valves.
SERVICE TOOLS ?
NO YES
FACTORY DEFAULTS
NO YES
200
o
CAL 200
o
(-) (+)DONE
CALIBRATE FLOW ?
NO YES
SPRAY HEAD CAL ?
NO YES
CONTAINER RDY ?
QUIT YES
LEFT OZ 36.0
QUIT YES
CALIBRATE FLOW ?
NO YES
SPRAY HEAD CAL ?
NO YES

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Step 3: Select Yes at the next screen.
Step 4: Ensure the sprayhead and funnel are in place and put a container, measuring pitcher or server, underneath
the funnel, select Yes.
Step 5: To activate the flow rate check, press the Brew button of the side of the machine you wish to check.
Step 6: The valve will open for 60 seconds. Once all of the water has dripped out, input the volume into the brewer.
The process needs to be repeated for both sides of the brewer.
Programming the Recipes
Every Dual brewer will have a recipe programmed into the main control board.
Large customers of Bunn will have a specific recipe and specific control board
installed in their brewers. Most often, if a technician is asked to modify a
brewer’s recipe it will be done using a recipe card. The recipe card allows new
programming data to be uploaded to the brewer wirelessly.
The recipe card will contain all of the coffee parameters for the customers cof-
fee flavor profile including: Coffee Name, Brew Volumes, Bypass Percentages,
Pulse Brew Times, PreInfusion Times, and Drip-Out Times.
To upload the recipe onto the brewer, remove the funnels and place the card under the left hand funnel sensing coil.
The machine will recognize the recipe card and prompt to upload the recipe on the display.
TAG CONTAINS
RECIPE FOR
“COFFEE NAME”
SHOW QUIT SAVE
“COFFEE NAME”
SHOW QUIT SAVE
NAME:_________________
TAG CONTAINS RECIPE
Instructions for transfer to brewer.
)emove both funnels.
)old tag under left sense coil.
)isplay will show “TAG CONTAINS
”
)ollow instructions on screens.
Today’s Special
NAME:_________________
TAG CONTAINS RECIPE
Instructions for transfer to brewer.
)emove both funnels.
)old tag under left sense coil.
)isplay will show “TAG CONTAINS
”
)ollow instructions on screens.
Instructions for transfer to brewer.
)emove both funnels.
)old tag under left sense coil.
)isplay will show “TAG CONTAINS
”
)ollow instructions on screens.
Today’s Special
BYPASS CAL ?
NO YES
CONTAINER RDY ?
QUIT YES
LEFT OZ 24.2
QUIT YES