Bunn ITCB-DV Technical Training Manual
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Also See for ITCB-DV:
- Operating & service manual (79 pages) ,
- Illustrated parts catalog (24 pages) ,
- Installation & operating manual (18 pages)
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Summary of Contents for Bunn ITCB-DV
- Page 1 BUNN TECHNICAL TRAINING ® ITCB High Volume...
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Page 2: Table Of Contents
Calibrating the Temperature Probe ................... 21 Unit 4: Troubleshooting Service Tools ........................23 Test Outputs ......................... 23 Test Switches ....................... 24 Test Frequency ......................24 Service Fault Messages ..................... 24 Triac Map ..........................25 © 2011 Bunn-O-Matic Corporation. All Rights Reserved Rev. A... -
Page 3: Unit 1: Overview
1 OVERViEW Unit Objectives Given an ITCB-DV, ITCB-DV HV, and an ITCB Twin HV, the learner will be able to perform the following tasks successfully: The learner will be able to discuss key features of the ITCB-DV. The learner will be able to discuss key features of the ITCB-DV HV. - Page 4 ITCB-DV. In addition to the high volume brewing system, components and features were affected during the transformation. First, we will take a look at the key features of an ITCB-DV. Most of the features can be found on all ITCB models and others will be specific to that machine.
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Page 5: Itcb-Dv Hv Overview
Model: ITCB Twin HV Note: Bullet points below will only list additional features of the machine when compared to the preceding model, which is the ITCB-DV HV. ITCB Twin HV Transformation Includes: • Large 5.5 gallon tank compared to 3 gallon tank (ITCB). -
Page 6: Unit 2: Machine Composition
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 an operating machine the learner will be able to give a general explanation of how the BUNN ITCB HV brewer operates. -
Page 7: Exterior Overview
The machine’s display is mounted to the control board. The display is visible on the front of the machine and provides information to the user and to the technician. ® READY TO BREW ENABLE WATER TEMP: 200° ON / OFF BREW FULL HALF BREW BREW BREW Bunn-O-Matic Corporation... - Page 8 Light indicates the selected batch to brew. Also used in programming to adjust settings on both batch sizes. ITCB-DV HV Training...
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Page 9: Interior Overview
Regular Tea Dispensers TF Servers and TDO-N Dispensers ITCB HV Interior Overview Internal Components *Thermistor 120 VAC Fan Thermistor Dillution Hose Solenoid (Dispense Valve) Solenoid for Bypass System Dual Inlet Solenoid *Transformer (Relocated) Bunn-O-Matic Corporation... -
Page 10: Internal Components Review
ITCB Twin HV Interior Overview Internal Components Dillution Hose Dual Dilution Solenoid Inlet Solenoid Transformer (Relocated) Thermistor Solenoid (Dispense Valve) Solenoid for Bypass System 120 VAC Fan Realy ITCB-DV HV Training... -
Page 11: Machine Function And Operations
“Check Fan”, and all input/outputs to the control board are shut-down. This allows the BUNN ITCB HV unit to conform to UL requirements. The thermistor is located within the liquid level and ground wire harness connector. -
Page 12: Filling System
.750 GPM Solenoid looses this signal, the control board will activate the inlet valve. Flow Control ITCB Twin HV To Dilution Nozzle To Dilution Nozzle To Tank To tank Inlet .50 GPM Solenoid Flow Control Dilution Solenoid ITCB-DV HV Training... -
Page 13: Heating System
The heating element is controlled by the control board through a mechanical relay. The dual voltage ITCB-DV HV brewer adds an additional 2268W for 208/240VAC ap- plication; the two elements are wired in series when selected for 208/240VAC. -
Page 14: Dilution System
• Dilution Nozzle The ITCB-DV HV can be programmed for quick brewing (without delay) or programmed with a dilution delay time under tea recipes. After or during the dispense of concentrate into the receiving vessel, the brewer will activate the dilute valve to begin the diluting process for the tea concentrate. - Page 15 Hot Water The ITCB-DV HV can deliver hot water on-demand for allied products. A hot water faucet is connected to the tank and will dispense hot water when the handle is pulled. Dispensing hot water while the machine is brewing will affect pot levels in the server.
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Page 16: Unit 3: Programming
ROgRaMMing Unit Objectives Given an installed BUNN ITCB HV brewer, the learner will be able to complete the following tasks successfully. The learner will be able to access and scroll through the programming options. The learner will be able to perform calibrations using the programming options. -
Page 17: Programming Lockout
The range can be from 2° to 20° F below the set temperature. The water must be at the Ready temperature or higher for the display to indicate Ready To Brew. If DONE brew lockout is enabled, the brewing process won’t start below this Ready temperature. Bunn-O-Matic Corporation... - Page 18 This function allows the operator to set separate temperatures for each selected recipe. This function allows the operator to enter the machine’s asset number. This can be use- ENTER ASSET # ful for tracking the usage or service of an individual machine within a group. ITCB-DV HV Training...
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Page 19: Calibrating The Sprayhead Flow Rate
Step 7: The display should now read “New Spray Flow” along with the correct flow NEW SPRAY FLOW rate of the sprayhead in ounces per minute. After 5 seconds, the display will return XX.X OZM to the “Calibrate Flow?” screen. 5 sec CALIBRATE FLOW? Bunn-O-Matic Corporation... -
Page 20: Calibrating The Bypass Flow Rate
Step 7: Measure the amount of water in the container and using the (-) or (+), adjust the 60 SEC TO FINISH amount on the display to match the amount in the container. Then press DONE. DILUTE OZ XX.X DONE NEW DILUTE FLOW ITCB-DV HV Training XX.X OZM 5 sec... -
Page 21: Master Tank Temperature
5. Press the + (Control) button to increase or - (Digital) button to decrease temperature reading until it matches the reading on the thermometer. 6. Exit program mode, remove thermometer, and install vent fitting. Calibration is complete. 200° CAL 200° DONE Adjust This Number Adjust this number 200° CAL 200° DONE Adjust this number Bunn-O-Matic Corporation... - Page 22 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 diagnosis the problem.
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Page 23: Service Tools
Service Tools Like all digital brewers that BUNN manufactures, the ITCB-DV HV 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 compo- nents 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. -
Page 24: Test Switches
3. Remove the top hood panel. Check the 120VAC fan and ensure this component is working properly. Note: by removing the top hood panel, the Check Fan message may or may not be on the display. - If fan checks ok, proceed to next step. ITCB-DV HV Training... -
Page 25: Triac Map
*An example of normal operating temperatures would be: 60°C/140°F under the top hood. Thermistor ohms value reading 2,488. Triac Map ITCB-DV HV (Hardee’s) 1. Dilution Valve (TH8) 2. Bypass Valve (TH7) 3. - Page 26 1. Left Relay (Dilution) (TH1) 2. Inlet Valve (TH2) 3. Right Relay (Dilution) (TH3) 4. Heating Circuit (TH4) 5. Left Dispense Valve (TH5) 6. Right Dispense Valve (TH6) 7. Left Bypass Valve (TH7) 8. Right Bypass Valve (TH8) ITCB-DV HV Training...
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