BUNN® TECHNICAL TRAINING ICB
Index Unit 1: Installation Site Requirements............................................................................................................... 4 Location of the Serial Number........................................................................................... 5 Water Supply Install............................................................................................................ 5 Electrical Install..................................................................................
Unit 1 Installation Unit Objectives Given a realistic scenario depicting a new site install, the learner will be able to install and setup the brewer for retail 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.
Installation Site Requirements Space ICB • Height clearance of 26” (35” ICB Tall) [66cm, 89cm ICB Tall] • Footprint able to accommodate 20” D x 11” W [51cm x 28cm] • Installation surface able to support 72lbs. (operating weight of the brewer) [33kg] • Level installation surface, brewer level on the surface ICB Twin • Height clearance of 26” (35” ICB-Twin Tall) [66cm, 89cm ICB-Twin Tall] • Footprint able to accommodate 21” D x 21” W [54cm x 54cm] • Installation surface able to support 122lbs.
Location of the Serial Number The machine’s serial number is located on the data plate which is adhered to the front panel. The complete serial number will need to be documented on all work orders and warranty tags. Water Supply Install Step 1: Remove the shipping cap from the fitting on the rear of the brewer. Step 2: Install the .75-11.5 NH to 3/8” flare adapter on the rear of the brewer, be sure to use the included rubber washer. Step 3: Flush the water line.
Initial Start-Up Step 1: Press the Enable Brew On/Off switch to start the fill process When the machine is turned on, it will begin to fill the tank. PLEASE WAIT TANK FILLING After the tank fills the machine will automatically begin the heating cycle. This will take approximately 20 minutes. HEATING WATER TEMP XXXXº Once the water temperature has reached the programmed Brew Lockout temperature it will display the ready screen.
Unit 2 Setup Unit Objectives Given a realistic scenario depicting a new site install, the learner will be able to install and setup the brewer for retail 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 access and scroll through the programming options.
Setup and Programming Accessing and using the brewer’s programming features is done from the front panel and requires no special tools. The programming menu is accessed through a hidden switch located on the right side of the display. The hidden switch on the left side will allow you to scroll backwards. B A ® READY TO BREW WATER TEMP: 200° ENABLE ON / OFF BREW C D ENABLE ON / OFF BREW E A.
Level 2 Programming Press and hold the hidden switch for 5 seconds Set Language? NO YES UNITS Metric DONE ENG REVIEW RECIPES ? NO YES ASSIGN RECIPE ? NO YES SET NEW RECIPE ? NO YES SET TEMP 200O (-) DONE (+) READY DEGREE 5O (-) DONE (+) ENABLE ADS ? NO DONE YES ENABLE SANITATION NO This function allows the operator to select the language used for the display. DONE YES This function allows the operator to select if numeric settings are displayed in English or Metric units.
XX REFILL (-) DONE XXX (+) SPRAY OZ/M: XX.X (-) DONE (+) BYPASS OZ/M: XX.X (-) DONE (+) CALIBRATE FLOW? NO YES BREW COUNTERS? NO YES ENTER ASSET # NO YES ENTER SERVICE # NO YES SERVICE TOOLS NO YES FACTORY DEFAULTS NO YES This function allows the operator to adjust the sensitivity of the refill circuit. This is mainly a troubleshooting feature. Water in different geographical locations can have different conductivities.
Uploading a Recipe Using a Recipe Card The recipe card includes all the information needed to set up that particular tea/coffee name. The information from the recipe card is loaded into the brewer’s memory by holding the chip area up to the brewer’s sensing coil. This information can include all the recipe settings for that particular name. These can all be loaded in seconds. Note: Instructions to program the brewer are printed on the recipe card, along with the tea or coffee name that is being programmed.
CALIBRATE FLOW? Calibrating the Bypass Flow Rate Step 1: Place the measuring container with a minimum capacity of 60 ounces beneath the funnel of the brewer. Water can also be dispensed into the server and then into the measuring container. Step 2: Press and hold the right hidden switch to enter level 2 programming. Continue to press the right hidden switch until the display reads CALIBRATE FLOW ?. Step 3: Press and release YES to advance to the SPRAYHEAD CAL? function screen.
Unit 3 Machine Composition 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 rear panel and top panel. The learner will remove the rear panel and top panel.
B Machine Composition C A E F Exterior Overview D Product Outlets and Removable Parts • • • • • • User interface (A) Display (B) Enable Brew On/Off (C) Brew Funnel (D) Hot water outlet (E) Sprayhead (F) User Interface The user interface is a membrane switch adhered to the front of the brewer. The membrane is connected to the control board assembly by a ribbon cable. The user interface allows the user to select the product, batch size and to begin the brew cycle.
Accessing the Inside of the Brewer The majority of service work to the ICB brewer will require the removal of either the front panel or the top panel. The top panel of the Single is secured with 1 flathead screw, the top panel of the Twin has two screws. The front panel is secured with either 6 or 8 flathead screws, depending on the height of the machine. Machine Function and Operations Control Board Assembly (CBA) The CBA is the brain of the brewer.
ICB Water for brewing is contained in a 3 gallon (11.36L) stainless steel tank. This tank contains a 2268W tank heater that is powered by the line voltage into the machine. The tank heater is activated by the CBA. The dual voltage ICB brewer adds an additional 1680W tank heater; the two elements are wired in series. The CBA monitors the water in the tank by a temperature sensor that is in contact with the water.
The brew funnel holds the ground coffee and is where the actual brewing process takes place. The wire basket in the funnel has a notch to allow the by-pass water to divert to the bottom of the funnel. The Smart funnel chip in the handle allows a brewer to communicate with a grinder via the funnel. The grinder will upload a recipe onto the funnel; the brewer can then receive that recipe once the funnel is in place. Hot Water The ICB can deliver hot water on-demand for allied products.
Unit 4 Preventive Maintenance 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.
Preventative Maintenance In order to maintain proper operation and long service life BUNN recommends performing the preventative maintenance every 6 months. Individual customers will vary with some customers choosing not to receive preventative maintenance. Tools Required: □□ Slotted screwdriver □□ 11/32 nut driver □□ 1/4 Nut driver □□ Slip-Joint Pliers □□ Needle-nose pliers □□ Deliming key (BUNN P/N: 38227.
Step 6: Rebuild the bypass valve(s) □□ Remove the hose clamps that secure the tubing to the valve □□ Remove the two 11/32 nuts that hold the solenoid bracket to the machine □□ Gently remove the tubing from the valve body □□ Using a 1/4 nut driver, remove the four screws and separate the valve assembly □□ Replace plunger, spring, and rubber seat using the rebuild kit BUNN P/N: 11517.
Unit 5 Troubleshooting 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 diagnosis the problem. Given a list of error messages and issues, the learner will be to identify the probable cause of the message or issue.
Service Tools The ICB brewer features on-board troubleshooting. Since all of the machine’s components are controlled or activated by the control board you can activate and test components individually from the user interface. This allows you to listen to solenoid valves opening, observing the flow of water or test to see if a component is receiving voltage using a meter. The Service Tools option is located in Level 2 of the programming.
Test Switches TEST SWITCHES? NO YES Press any of the input buttons on the membrane switch, the display will show which button is being pressed. ENABLE ON / OFF BREW READY TO BREW WATER TEMP: 200° ® ENABLE ON / OFF BREW Test Frequency TEST FREQUENCY? NO YES The funnel sensing circuit is tuned to 125 kHz. If the circuit is not tuned correctly, then the funnel information will not be transferred to the brewer.
Triac Map (ICB) 3 2 4 1 6 1. TH10 = Sweetener 2. TH9 = Bypass Valve 3. TH6 = Dispense Valve 4. TH4 = Inlet Valve 5. TH2 = Funnel Lock Solenoid 6.
Triac Map (ICB Twin) 8 7 6 5 3 2 1 4 1. Left Funnel Lock (TH1) 2. Inlet Valve (TH2) 3. Right Funnel Lock (TH3) 4. Heating Circuit (TH4) 5. Left Dispense Valve (TH5) 6. Right Dispense Valve (TH6) 7. Left Bypass Valve (TH7) 8.
