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Related Manuals for Bunn Dual SH BrewWISE
Summary of Contents for Bunn Dual SH BrewWISE
- Page 1 ® BUNN TECHNICAL TRAINING ® Dual SH BrewWISE...
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Page 2: Table Of Contents
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... -
Page 3: Unit 1 Installation
NSTALLATION Unit Objectives 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. -
Page 4: Site Requirements
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 •... -
Page 5: Initial Start-Up
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 READY TO BREW shut-off temperature. WATER TEMP 200° Bunn-O-Matic Corporation... -
Page 6: Unit 2 Setup
ETUP Unit Objectives 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. -
Page 7: Setup And Programming
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. - Page 8 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. DONE Prevents the start of a brew cycle if a Soft Heat ® server is not in place. SERVER DETECT ? DONE Dual SH BrewWISE Training Manual ®...
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Page 9: Level 3 Programming
QUIT Check and Adjust the Bypass Valve Flow Rate Step 1: Scroll to Calibrate Flow select Yes. CALIBRATE FLOW ? Step 2: Select No at the next screen to dispense from the brew valves. SPRAY HEAD CAL ? Bunn-O-Matic Corporation... -
Page 10: Programming The Recipes
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 TAG CONTAINS RECIPE TAG CONTAINS RECIPE installed in their brewers. -
Page 11: Default Values
Large batch Drip Out Times Small batch 1:00 Medium batch 1:30 Large batch 2:00 Enable Ads 200º F (93º C) Brew Temperature 195º F (91º C) Ready Temperature Refill 39.2 Spray (Oz/Minute) 24.1 Bypass (Oz/Minute) Funnel Detect Server Detect Bunn-O-Matic Corporation... -
Page 12: Unit 3 Machine Composition
ACHINE OMPOSITION Unit Objectives Given a realistic scenario in which the learner has access to the machine’s internal components the learner will understand the composition and functions of the brewer. Given a realistic scenario requiring the learner to access the internal components of the machine the learner will be able to remove the front panel and top cover. -
Page 13: Exterior Overview
Brew Start Switch Funnel Sensing Coils Accessing the Inside of the Brewer The majority of service work done to the Dual SH BrewWISE brewer will require the service technician to access the ® inside of the unit. The brewer has three removable panels to facilitate access- the front panel, the top panel, and the server base panel. -
Page 14: Machine Function And Operations
fills to the top and continues to fill. The water will drain into the overflow cup; there is a float switch in the cup. When this switch floats to its top position this signals the control board to deactivate the fill circuit and heating circuit. Dual SH BrewWISE Training Manual ®... -
Page 15: Heating System
The sprayhead, attached to the dispense solenoid, controls the outlet flow rate of the water. The number and size of the holes determines the flow rate. Bypass Valve Dispense Valve Bunn-O-Matic Corporation... -
Page 16: Coffee Holding System
Rectifier • Spring contacts The coffee holding system maintains the finished product at the desired temperature. The brewed coffee is stored in the server utilizing Bunn Soft Heat ® technology. The brewer provides 24VDC to the Soft Heat servers through contacts in the front of the machine. Line voltage from ®... -
Page 17: The Soft Heat Server
Note- the resistor can only be reconnected by soldering the connections. Control Temperature Jumper Program Shown in ºF Position I = In O = Cut 176.0 176.9 177.8 178.7 179.6 180.5 181.4 (Default) 182.3 183.2 184.1 185.0 185.9 Number Minutes 186.8 187.7 188.6 189.5 Bunn-O-Matic Corporation... -
Page 18: Unit 4 Preventive Maintenance
REVENTIVE AINTENANCE Unit Objectives Given a realistic scenario depicting a machine requiring a preventive maintenance, the learner will be able to identify which elements of a component need to be serviced without error. Given a machine, all the necessary tools and safety equipment, the learner will be able to identify the components that need to be serviced for the PM. -
Page 19: Preventive Maintenance
Preventive Maintenance In order to maintain proper operation and long service life BUNN recommends performing the preventive mainte- nance every 6 months. Individual customers will vary with some customers choosing not to receive preventive main- tenance. Tools Required: • 2 Flat blade screwdrivers (1 small tip, 1 medium tip) •... - Page 20 Remove the valve from the brewer □ Remove the four Phillips head screws and disassemble the valve □ Replace plunger, spring, and rubber seat using the rebuild kit Bunn P/N: 11517.0008 □ Clean any mineral build-up from the valve □...
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Page 21: Unit 5 Troubleshooting
ROUBLESHOOTING Unit Objectives Given a realistic scenario depicting a broken machine, the learner will be able to effectively troubleshoot, diagnosis, and repair the problem returning the machine to normal operation. Given a machine displaying an error message, all the necessary tools and safety equipment, the learner will be able to access the software and diagnosis the problem. -
Page 22: Service Tools
LEFT BREW VALVE LEFT FUNNEL LOCK LEFT SERVER NEXT NEXT NEXT NEXT RIGHT BREW VALVE RIGHT BYPASS RIGHT FUNNEL LOCK RIGHT SERVER NEXT NEXT NEXT NEXT REFILL VALVE HEATER CONTACTOR TANK HEATERS NEXT NEXT NEXT Dual SH BrewWISE Training Manual ®... -
Page 23: Test Switches
This indicates that the tank overflow is full. The unit may be overfilling or boiling. This message will appear if the control board does not see the programmed water temperature within 60 minutes. This message will appear if the control board does not see the tank fill within 30 minutes. Bunn-O-Matic Corporation... -
Page 24: Operator Fault Messages
The funnel was removed during the brew cycle. Only applicable if the brewer does not have a funnel lock solenoid. The server was removed during the brew cycle. The brew switch was turned off during the brew cycle. Dual SH BrewWISE Training Manual ®... -
Page 25: Triac Map
Triac Map 1. Left Funnel Lock 2. Right Funnel Lock 3. Left Transformer 4. Left Dispense Valve 5. Right Dispense Valve 6. Left Bypass Valve 7. Right Bypass Valve 8. Right Transformer 9. Spare 10. Refill Solenoid Bunn-O-Matic Corporation...