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Bunn ITCB Operating & Service Manual

Infusion series
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See also: Service & Repair Manual , Programming Manual
ITCB
ITCB-DV
®
Infusion Series
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601
FAX: (217) 529-6644
www.bunn.com
36748.0000F
07/06 ©2004 Bunn-O-Matic Corporation

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  • Page 1 ITCB ITCB-DV ® Infusion Series OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www.bunn.com 36748.0000F 07/06 ©2004 Bunn-O-Matic Corporation...

  • Page 2: Warranty

    SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND. In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profi ts, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.

  • Page 3: Table Of Contents

    The Infusion Series combines BrewWISE, CDBC and Tea Brewers into one. ITCB is able to brew both tea and coffee with recipe settings and has the following features: Pre-Infusion and Pulse Brew, quick and standard brew, and BrewWISE. It has an LCD for digital readout and programming along with the Smart Funnel options for coffee.

  • Page 4: User Notices

    USER NOTICES Carefully read and follow all notices in this manual and on the equipment. All labels on the equipment should be kept in good condition. Replace any unreadable or damaged labels. #00656.0000 #00658.0000 #00986.0000 37881.0000 Page 4 36748 101505...
  • Page 5 USER NOTICES (CONT.) 120/208V 120/240V 120V #03408.0000 #34056.0001 For 120/208V or 120/240 volt operation, replace Power Supply Cord only with Bunn-O-Matic part number 01699.0000. #03409.0000 #34072.0000 #29710.0009 #29710.0010 Page 5 36748 101505...

  • Page 6: Electrical Requirements

    ELECTRICAL REQUIREMENTS WARNING - The brewer must be disconnected from the power source until specifi ed in Initial Set-Up. Requirements for brewers without an attached cord set are as follows: Refer to Data Plate on the Brewer, and local/national electrical codes to determine circuit requirements. BACK WHITE 120V.

  • Page 7: Plumbing Requirements

    " (12.7) water supply line. A tight coil of copper tubing in the water line will facilitate moving the brewer to clean the counter top. Bunn-O-Matic does not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type of device may restrict water fl...

  • Page 8: Operating Controls

    OPERATING CONTROLS READY TO BREW WATER TEMP: 205° FULL HALF A. ON/OFF SWITCH Pressing the "ON/OFF" pad will alternately turn the brewer on and off. Pressing this pad during the brew cycle will interrupt the brew cycle, stopping the fl ow of water. Pressing this pad during programming of the brewer will exit the setup and return to the main screen.

  • Page 9: Initial Set-Up

    INITIAL SET-UP Insert an empty funnel into the funnel rails. Place an empty server under the funnel. Connect the brewer to the power source. Make sure the ON/OFF switch is ON (LED will be lit). Water will fl ow into the tank and stop when the tank is fi...

  • Page 10: Tea Brewing

    WITHOUT A SMART FUNNEL AND G9-2T DBC GRINDER: 1. Begin each brew cycle with a clean empty brew funnel. 2. Insert a BUNN fi lter into the funnel. 3. Pour the fresh coffee into the fi lter and level the bed of grounds by gently shaking.

  • Page 11: Cleaning

    3. The use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment. Do NOT clean this equipment with a water jet device. CAUTION – DO NOT KEEP BREWED ICED TEA OVERNIGHT. THE SERVER MUST BE CLEANED DAILY.

  • Page 12: Glossary

    GLOSSARY AD CARD: An assembly consisting of computer chips and an instruction label. Used for loading advertising messages into the brewer. AUTO PULSE BREW SETUP: The setting of a pulse brew routine by entering in the total desired brew time. The brewer will then calculate and perform a pulse brew routine using a predetermined formula.
  • Page 13 GLOSSARY (Continued) prevent a funnel overfl ow. RECIPE: Set of brewing parameters stored in the brewer. The parameters are unique for each tea and coffee name. Tea recipes include brew ounces, dilution ounces, dilution delay, pulse brew, and drip time. Coffee recipes include brew ounces, pulse brew and drip time.

  • Page 14: Programming

    PROGRAMMING Using the menu-driven display on the front of the brewer, the operator has the ability to alter or modify various brewing parameters such as brew temperatures, brew volumes, dilution volumes, pulse brew, etc. This allows for the precise brewing of various fl avors of tea and coffee. Programming of the brewer is achieved by entering a certain function.

  • Page 15: Programming The Brewer

    PROGRAMMING THE BREWER The programming of the brewer is divided into two levels. There is one function in Level 1. All other functions are accessed in Level 2. The following function screens are in order of appearance. Each screen will have instructions on how to access and the procedures to program the various functions of the brewer.

  • Page 16: Function Flow Chart

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - FLOW CHART BREW LOCKOUT? PROGRAMMING FUNCTIONS - LEVEL I DONE YES BREW BREW BREW PROGRAMMING FUNCTIONS - LEVEL 2 SET LANGUAGE? UNITS REVIEW RECIPES ASSIGN RECIPE METRIC DONE BREW BREW BREW BREW BREW BREW BREW BREW...

  • Page 17: Brew Lockout

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL I BREW LOCKOUT This function allows the operator to prevent or allow brewing if the water temperature is less than the set READY temperature. Procedure for setting Brew Lockout: 1. To access this function screen press and hold the right hidden button. Release when the display reads: BREW LOCKOUT? DONE BREW...

  • Page 18: Set Language

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) The functions in the second level of programming allow the operator to adjust brew settings and other feature options. To access the level 2 function screens press and hold the right hidden button. Release when the display reads: SET LANGUAGE This function allows the operator to select the language used for the display.

  • Page 19: Units

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) UNITS This function allows the operator to select if numeric settings are displayed in English or Metric units. Procedure for setting the Units: 1. Press and hold the right hidden button until the display reads SET LANGUAGE? Press and release the right hidden button until the display raeds UNITS.

  • Page 20: Review Recipes

    GO TO REVIEW RECIPES, PAGE Tea 2 No Name Coffee IN GRINDER MANUAL 26 AND FOLLOW INSTRUCTIONS Tea 3 Hot Tea CONTACT BUNN-O-MATIC SEE RECIPE CHART ON THIS PAGE FOR ASSISTANCE FOR A LIST OF EXISTING RECIPES. Page 20 36748 070706...

  • Page 21: Assign Recipe

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ASSIGN RECIPE 2. Press and release DONE to disable that brew This function allows the operator to assign recipes to switch on that side. the three brew buttons. Standard recipes (TEA 1, TEA 2, TEA 3, HOT TEA, ICED COFFEE, NO-NAME COFFEE) ASSIGN RECIPE and any saved recipes from a Smart Funnel or Recipe...

  • Page 22: Set New Recipe

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE (to set a new COFFEE recipe using Certain coffee names are stored in the grinder’s memory. a Smart Funnel or RECIPE CARD) When a particular name of coffee is ground into the Smart Funnel, that name and the batch size selected Using a Smart Funnel and a G9-2T DBC or MHG are transferred from the grinder to the programming...
  • Page 23 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure for Setting the Recipe: 9. When fi nished, press the other batch size and repeat NOTE: Before beginning setup, place a server beneath step #8. the brew funnel. 10. When fi nished setting both batch sizes, press and 1.
  • Page 24 ALL BREW SETTINGS for that particular coffee name. These can all be loaded FOR THAT RECIPE SETUP COMPLETE in seconds. Contact Bunn-O-Matic Corporation for the availability (COFFEE NAME) of RECIPE CARDS. NOTE: Instructions to program the brewer and grinder NOT SAVED are printed on the RECIPE CARD, along with the coffee name that is being programmed.
  • Page 25 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 4. To show (view) this information, press and release REVIEW RECIPES? SHOW. The display will scroll through all of the brew settings for that recipe. This display will then return to CARD CONTAINS RECIPE FOR then will BREW BREW BREW...

  • Page 26: Brew Oz

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) REVIEW RECIPES Procedure for modifying TEA recipes: Tea recipes: BREW OZ: BREW BREW BREW Range: OFF, 10.0 oz to 135.0 oz (.3-4.0 L) for both batch sizes This function allows adjustment of the brew (tea con- PRESSING NO WILL TEA 1 ADVANCE TO NEXT...
  • Page 27 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) REVIEW RECIPES Tea recipes: DILUTE OZ: Range: 0.0 oz to 580.0 oz (0-17.1 L) for both batch BREW BREW BREW sizes This function allows adjustment of the dilution volumes for each batch. PRESSING NO WILL TEA 1 ADVANCE TO NEXT...

  • Page 28: Dilute Delay

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) REVIEW RECIPES Tea recipes: DILUTE DELAY Range: OFF to 10 minutes for both batch sizes This function allows the operator to adjust the timing BREW BREW BREW for the start of the dilution water. The OFF setting will begin dilution fl...
  • Page 29 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) TEA RECIPES: Setting Pulse Brew – EASY Pulse Brew SET PULSE BREW Range: Minimum: will adjust to the minimum time This function allows the operator to program the brewer required to brew that batch using the set brew vol- to “pulse”...
  • Page 30 PROGRAMMING THE BREWER (cont.) 17. If both batch sizes are correct, press YES. The display should now read DRIP TIME:. To exit to PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) the MAIN SCREEN, press and release the ON/OFF button. Setting Pulse Brew – EASY Pulse Brew NOTE: If the brewer is already on the SET PULSE BREW screen, skip steps 1 through 9, and proceed REVIEW RECIPES...
  • Page 31 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew – MANUAL Pulse Brew 17. When fi nished, press the other batch size and repeat NOTE: If the brewer is already on the SET PULSE step # 16. BREW screen, skip steps 1 through 9, and proceed 18.

  • Page 32: Pulse Brew

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 1ST ON TIME X:XX REVIEW RECIPES DONE BREW BREW BREW BREW BREW BREW SET BOTH BATCH SIZES PRESSING NO WILL OFF TIME X:XX TEA 1 ADVANCE TO NEXT DONE FUNCTION SCREEN MODIFY SHOW NEXT BREW BREW...

  • Page 33: Drip Time

    PROGRAMMING THE BREWER (cont.) 14. If both batch sizes are not correct, press and release NO to return to the DRIP TIME setup screen and PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) repeat steps 11 through 13. TEA RECIPES: 15. If both batch sizes are correct, press YES. The DRIP TIME display should show the name of the recipe be- This function allows the operator to adjust the DRIP...

  • Page 34: Brew Oz

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure for modifying COFFEE recipes: REVIEW RECIPES Coffee recipes: BREW OZ: Range: OFF 10.0 oz to 135.0 oz (0.0-4.0L) for both batch sizes BREW BREW BREW This function allows adjustment of the brew volumes for each batch.
  • Page 35 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) COFFEE RECIPES: These three times can be set two different ways. The SET PULSE BREW fi rst is by setting the total brew time and using a calcu- This function allows the operator to program the brewer lated pulse routine.
  • Page 36 PROGRAMMING THE BREWER (cont.) REVIEW RECIPES PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew – EASY Pulse Brew BREW BREW BREW NOTE: If the brewer is already on the SET PULSE BREW screen, skip steps 1 through 6, and proceed directly to step 7.
  • Page 37 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew – MANUAL Pulse Brew 18. When fi nished setting both batch sizes, press and NOTE: If the brewer is already on the SET PULSE release DONE. BREW screen, skip steps 1 through 6, and proceed 19.

  • Page 38: Pulse Brew

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 1ST ON TIME X:XX REVIEW RECIPES DONE BREW BREW BREW BREW BREW BREW SET BOTH BATCH SIZES PRESSING NO WILL OFF TIME X:XX TEA 1 ADVANCE TO NEXT DONE FUNCTION SCREEN MODIFY SHOW NEXT BREW BREW...

  • Page 39: Drip Time

    PROGRAMMING THE BREWER (cont.) display should show the name of the recipe be- ing programmed (modifi ed) along with SETUP PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) COMPLETE. After a 5 second delay, the display will advance to the next recipe name in the brewer’s COFFEE RECIPES: memory.

  • Page 40: Ready Degree Xxx

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) MASTER TEMP This function allows the operator to adjust the brew water temperature in the tank. This also sets the hot water faucet dispense temperature. MASTER TEMP: 205° Procedure for setting the Master Temp DONE Range: 185°...

  • Page 41: Enable Ads

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) READY DEGREE This function allows the operator to set the minimum temperature allowable to start a brew cycle. The range can be from 2° to 20° F within the set temperature. READY DEGREE XXX The water must be at the READY temperature or higher DONE...
  • Page 42 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABLE ADS line, press and release NO and proceed to step This function allows the operator to choose whether 13. To exit programming and return to the MAIN or not to display an advertising message. An ad can be SCREEN, press and release the ON/OFF pad.

  • Page 43: Enable Sanitation

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 3. After a short pause, the display will read CARD ENABLE ADS (Continued) CONTAINS AD. To view the ad, press and release Procedure to READ in a New Ad: SHOW. To save the ad to the brewer's memory, NOTE: Saving a new ad will erase any previously saved press and release SAVE.
  • Page 44 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABL SANITATION This function allows the operator to enable the sanita- ENABL SANITATION tion function and set the time before a cleaning alert DONE will be displayed. WITH NO FLASHING WITH YES FLASHING BREW BREW...

  • Page 45: Enable Energy Saver

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABLE ENERGYSAVR 10. Once the idle time has expired, the display will This function allows the operator to enable the mode read either ENERGY SAVER...NO TEMPERATURE function and set the idle time. Once the set idle time or ENERGY SAVER...REDUCED TEMPERATURE, has expired, the operator can choose to have the heat- depending on the settings.

  • Page 46: Water Temp

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABLE FRESH TIMER 11. Once the set time has expired, the display will read This function allows the operator to enable the Freshness FRESHNESS ALERT BREW X, and then FRESHNESS Alert and set the expiration time.

  • Page 47: Refill

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) REFILL Range: 0 to 155 This function allows the operator to adjust the sensitiv- XXX REFILL 155 ity of the refi ll circuit. This is mainly a troubleshooting DONE feature. Water in different geographical locations can have different conductivities.
  • Page 48 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SPRAY OZ/M This function allows the operator to view or to enter the actual fl ow rate coming out of the sprayhead. This is SPRAY OZ/M: XX.X NOT used to change the actual fl ow rate, but to tell the DONE internal controller how fast the water is fl...

  • Page 49: Calibrate Flow

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) DILUTE OZ/M This function allows the operator to view or to enter the DILUTE OZ/M: XX.X actual fl ow rate coming out of the dilution nozzle. This is NOT used to change the actual fl ow rate, but to tell DONE the internal controller how fast the water is fl...

  • Page 50: Brew Counters

    PROGRAMMING THE BREWER (cont.) CALIBRATE FLOW? PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) CALIBRATE FLOW PRESSING NO WILL This function allows the operator to enter the actual fl ow BREW BREW BREW ADVANCE TO BREW COUNTERS rate of the sprayhead and the dilution by dispensing both separately for one minute.
  • Page 51 PROGRAMMING THE BREWER (cont.) CALIBRATE FLOW? PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) CALIBRATE FLOW (Continued) PRESSING NO WILL BREW BREW BREW ADVANCE TO BREW COUNTERS Procedure to calibrate the dilution fl ow rate: 1. Place a container, accurately graduated and with SPRAY HEAD CAL a minimum capacity of 130 ounces, beneath the funnel.

  • Page 52: Set Recipe Temps

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) BREW COUNTERS This function allows the operator to track the total num- BREW COUNTERS? ber of brew cycles completed, as well as the number of batches brewed using each of the brew buttons. There are three resettable counters, and one life counter that PRESSING NO WILL BREW...
  • Page 53 PROGRAMMING THE BREWER (cont.) the right hidden switch until the display reads SET LANGUAGE. Press and release the right hidden switch PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) until the display reads SET RECIPE TEMPS. Press and release YES. The display will read WILL OVERRIDE THE SET RECIPE TEMPS This function allows the operator to set separate tem- SET RECIPE TEMPS...

  • Page 54: Asset Number

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENTER ASSET #? ASSET NUMBER This function allows the operator to enter in the ma- chine's asset number. This can be useful for tracking the usage or service of an individual machine within a group.

  • Page 55: Service Number

    PROGRAMMING THE BREWER (cont.) ENTER SERVICE #? PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE NUMBER This function allows the operator to enter in the telephone number to call if service is needed. The service num- BREW BREW BREW ber will be displayed anytime there is a fault message displayed.

  • Page 56: Service Tools

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE TOOLS 8. The display should now read DILUTION. To test This function allows the testing of individual components the dilution valve, press ON. If the dilution valve is and the ability to check switches for proper function. This functional, water should run from the nozzle.
  • Page 57 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) P2883 Page 57 36748 041504...
  • Page 58 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure to test switches: SERVICE TOOLS? The following switches can be individually tested: Half Batch Full Batch PRESSING NO WILL BREW BREW BREW Left Hidden ADVANCE TO FACTORY DEFAULTS Brew A Brew B Brew C TEST OUTPUTS?
  • Page 59 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure to test coil frequency: SERVICE TOOLS? 1. Press and hold the right hidden button until the dis- play reads SET LANGUAGE. Press the right hidden button until the display reads SERVICE TOOLS. PRESSING NO WILL BREW BREW...

  • Page 60: Factory Defaults

    PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) FACTORY DEFAULTS This function allows the operator to erase ALL of the FACTORY DEFAULTS previously entered recipes and ad messages. Factory-set default values will replace ALL previous settings. PRESSING NO WILL Procedure to set factory defaults: BREW BREW...
  • Page 61 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) FACTORY DEFAULT VALUES Brew Lockout - Disabled TEA 2 RECIPE: BREW VOLUMES Language - English Half Batch – 38 OZ Full Batch – 76 OZ Units - English DILUTION VOLUMES SWITCH RECIPE Half Batch –...
  • Page 62 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) FACTORY DEFAULT VALUES (Continued) HOT TEA RECIPE: BREW VOLUMES BREW VOLUMES Half Batch - 64 OZ Half Batch - 64 OZ Full Batch - 64 OZ Full Batch - 64 OZ PULSE BREW TIMES PULSE BREW TIMES Half Batch - Manual :40/:10/:26...

  • Page 63: Troubleshooting

    TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department. • Inspection, testing, and repair of electrical equipment should be performed only by qualifi ed service person- nel.
  • Page 64 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Temperature Too Low 1. Water temperature in the tank A) Wait for the brewer to heat to does not meet the ready tempera- the proper temperature. ture. B) Disable the BREW LOCKOUT function. See page 17 for proce- dure.
  • Page 65 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brew cycle will not start 1. No water Check plumbing and shut-off valves 2. No power or incorrect voltage to Check for voltage across the termi- the brewer nals at the terminal block. 3. ON/OFF switch Test the ON/OFF switch.
  • Page 66 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Automatic refi ll will not operate 1. No water Check plumbing and shut-off or display shows FILL TIME TOO valves LONG 2. Tank drain clamp Check tank drain clamp 3. Water Strainer Direction of fl ow arrow must be pointing towards direction of water fl...
  • Page 67 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Automatic refi ll will not operate or 5. Refi ll valve (Continued) secure. Test the refi ll valve. Refer display shows FILL TIME TOO LONG to the test outputs procedures on (Continued) page 56. Refi...
  • Page 68 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water fl ows into tank continuously 1. Refi ll valve Foreign material lodged in valve, with power removed from brewer. holding it in open state. 2. Refi ll probe or sensitivity set- Check the sensitivity setting. Refer ting to the REFILL function on page 47.
  • Page 69 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water will not heat or display shows 1. Limit Thermostat Remove power from the brewer. HEATING TIME TOO LONG. Check for continuity through the limit thermostat. CAUTION: Do not eliminate or bypass limit thermo- stat.
  • Page 70 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water will not heat or display shows 4. Tank heaters Remove power from the brewer. HEATING TIME TOO LONG. Check for continuity between the (Continued) white terminal of the terminal block (or red terminal on 208/240V mod- els) and the black wire on the relay on the control board (Toggle switch must be in 120/208-240V position...
  • Page 71 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dilution cycle will not start 1. Dilution valve Test the dilution valve. Refer to the test outputs procedures on page 56. 2. Recipe settings Check to make sure the current recipe has a dilution volume set. Coffee recipes will not have dilu- tion.
  • Page 72 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Spitting or unusual steaming from Inspect the probe and tank assembly 1. Lime buildup sprayhead or air vent. for excessive lime deposits. Delime as required. Remove the probe from the grom- 2. Temperature probe met and submerge in a water bath of approximately 70°F (21°C).
  • Page 73 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Inconsistent beverage level in 1. Strainer Direction of fl ow arrow must be server/dispenser pointing towards the brewer. Re- move the strainer and check for obstructions. Clear or replace. 2. Improper water pressure Check operating water pressure to the brewer.
  • Page 74 Dripping from sprayhead. 1. Brew valve Repair or replace leaky valve Water overfl ows fi lter. 1. Type of paper fi lter BUNN paper fi lters should be used for proper extraction 2. No sprayhead Check sprayhead Beverage overfl ows server.
  • Page 75 PROBLEM PROBABLE CAUSE REMEDY Weak beverage. 1. Type of paper fi lter BUNN paper fi lters should be used for proper extraction 2. Coffee or tealeaves For coffee, a suffi cient quantity of fresh drip or regular grind should be used for proper extraction. For tea, a suffi...
  • Page 76 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brewer is making unusual noises. 1. Solenoids The mounting screws on the so- lenoids must be tight or they will vibrate during operation 2. Plumbing lines Plumbing lines should not be resting on the countertop. 3.

  • Page 77: Wiring Diagrams

    SCHEMATIC WIRING DIAGRAM ITCB-DV SELECTOR SWITCH LIMIT WHI-14 TANK HEATER THERMOSTAT BLK-14 BLU-14 TANK HEATER BLU-14 BLK-14 WHI/VIO-14 RED-14 1680W 1800W FUNNEL SENSOR J1-1 J1-2 WHI/VIO BLU-14 BLK-14 N.O. DILUTION WHI/VIO WHI/VIO J17-1 DISPENSE WHI/GRN WHI/GRN REFILL WHI/BLU WHI/BLU J17-5...
  • Page 78 Page 78 36748 111904...
  • Page 79 SCHEMATIC WIRING DIAGRAM ITCB-C-DV SELECTOR SWITCH LIMIT WHI-14 TANK HEATER THERMOSTAT BLK-14 BLU-14 TANK HEATER BLK-14 BLU-14 WHI/VIO-14 RED-14 1425W 1800W FUNNEL SENSOR J1-1 J1-2 WHI/VIO BLU-14 BLK-14 N.O. DILUTION WHI/VIO WHI/VIO J17-1 DISPENSE WHI/GRN WHI/GRN REFILL WHI/BLU WHI/BLU J17-5...

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