Bunn ICB инструкция обслуживания

BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 37077.0000D 07/06 ©2004 Bunn-O-Matic Corporation www .bunn.com OPERA TING & SER VICE MANU AL ICB ICB-DV Infusion Series ® with Smart Funnel ®[...]

Page 2 BUNN-O-MA TIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specifi ed below: 2 years parts and 1 year labor . 2) Electronic circuit and/or control boards: parts and labor for 3 years. 3) Compressors on refrigeration equipment: 5 years parts and 1[...]

Page 3 INTRODUCTION This equipment will brew coffee into an awaiting server or airpot. The Dual Voltage model can be easily con- fi gured for 120V 15 amp, 120/208V 20 amp or 120/240V 20 amp. The brewer may have an auxillary hot water faucet. It is only for indoor use on a sturdy and level counter or shelf. Please install in an area where there are[...]

Page 4 F or 120/208V or 120/240 volt oper ation, replace P ower Supply Cord only with Bunn-O-Matic par t n umber 01699.0000. #34072.0000 #29710.0011 /PTIONAL&IELD7IRING 6 !7 0(7IRE'.$ ?[...]

Page 5 USER NOTICES (CONT .) #34056.0001 120/208V 120/240V 120V[...]

Page 6 WHITE/VIOLET BLUE WHITE BACK FRONT 120/208V 120/240V 120V ELECTRICAL REQUIREMENTS WARNING - The brewer must be disconnected from the power sour ce 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 circ[...]

Page 7 PLUMBING HOOK UP 1. Remove the shipping cap from the fi tting on the rear of the brewer . 2. Attach the fl are elbow (supplied separately with the machine) to the fi tting. 3. Flush the water line and securely attach it to the fl are elbow fi tting. 4. T urn on the water supply . PLUMBING REQUIREMENTS This brewer must be connected to a [...]

Page 8 OPERA TING CONTROLS 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. B. PROGRAMMING (left)[...]

Page 9 INITIAL SET -UP VIEWING ASSIGNED RECIPES & ASSET NUMBER 1. Make sure the ON/OFF switch is OFF (LED will not be lit). 2. Press and hold BREW A. The display will show the name of the recipe assigned to Brew A along with SWITCH NOT ON. This is to indicate that a brew cannot be initiated while the ON/OFF switch is OFF . 3. Repeat for BREW B [...]

Page 10 COFFEE BREWING WITHOUT A SMART FUNNEL AND MHG or 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. 4. Slide the funnel into the funnel rails until it stops. 5. Place an empty server under [...]

Page 11 CLEANING 1. 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. 2. Check and clean each sprayhead. The sprayhead holes must always remain open. NOTE: Any buildup on the sprayhead and fi tting may re[...]

Page 12 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 water delivery time. The brewer will then calculate and perform a pulse brew routine using a predetermined [...]

Page 13 RECIPE : Set of brewing parameters stored in the brewer . The parameters are unique for each coffee name. Coffee recipes include brew ounces, bypass per centages, pulse brew or pre-infusion and drip time. RECIPE CARD : An assembly consisting of a computer chip and an instruction label. Used for loading a recipe into the brewer and the compa[...]

Page 14 HALF FULL "2%7 ! "2%7 " "2%7 # 4- 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, bypass percentages, pulse brew , etc. This allows for the precise brewing of various fl avors of cof[...]

Page 15 MEMORY LOCK UNLOCK BREW A BREW B BREW C MAIN SCREEN This screen will be shown when the brewer is ready for use. The screen displays the water temperature in the tank. When the water in the tank reaches the correct set temperature, the display will change from HEA TING to READY TO BREW . PROGRAMMING LOCKOUT SWITCH (located on the memory modu[...]

Page 16 BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A[...]

Page 17 BREW A BREW B BREW C Press here for NO BREW LOCK OUT? NO DONE YES Press here for YES Press here for DONE 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. T o access this function s[...]

Page 18 BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C This function allows the operator to select the language used for the display . Procedure for setting Language: 1. Press and hold the right hidden button until the display reads SET LANGUAGE? and release. 2. Press YES to proceed. The display should now read [...]

Page 19 BREW A BREW B BREW C BREW A BREW B BREW C 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? Pres[...]

Page 20 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) REVIEW RECIPES (Modify recipe, set up standard recipes) This function has three parts: 1. It allows the operator to view the brew settings for the various coffee recipes stored into the brewer . 2. It allows the operator to modify (change) any of the brew settings for a [...]

Page 21 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ASSIGN RECIPE This function allows the operator to assign recipes to the three brew buttons. Standard recipes and any saved recipes from a Smart Funnel or Recipe Card can be assigned to a brew button. Only one recipe per brew button is allowed, for a total three recipes [...]

Page 22 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE (to set a new COFFEE recipe using a Smart Funnel or RECIPE CARD) Using a Smart Funnel and a G9-2T DBC or MHG Grinder: This function allows the operator to set BREW VOL- UMES, BYP ASS PERCENT AGE, PULSE BREW TIMES AND DRIP OUT TIMES for each coffee name pre[...]

Page 23 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 9. When fi nished, press the other batch size and repeat step #8. 10. When fi nished setting both batch sizes, press and release DONE . The display should read 2 BA TCHES DONE? 11. If both batch sizes are not correct press and release NO to return to the BREW OZ setup [...]

Page 24 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 37077 071206 release DONE . The display should read 2 BA TCHES DONE? 16. If both batch sizes are not correct press and release NO to return to the %BYP ASS function and repeat steps #13, 14 and 15. 17. If both batch sizes are correct, press YES . This will advance to the[...]

Page 25 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE If not using a Smart Funnel and/or a G9-2T DBC or MGH Grinder and/or a Recipe Card It is possible to operate the brewer without using a Smart Funnel and/or G9-2T DBC or MHG Grinder . If a standard funnel or if a non-DBC grinder is used the brewer will auto[...]

Page 26 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure for modifying COFFEE recipes: Coffee recipes: BREW OZ: Range: OFF , 10.0 oz to 224.0 oz (.3-6.6 L) for both batch sizes This function allows adjustment of the brew volumes for each batch. 1. Press and hold the right hidden button until the dis- play reads SET L[...]

Page 27 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Coffee recipes: %BYP ASS: Range: 0 to 90% for both batch sizes This function allows adjustment of the amount of water that bypasses the grounds. The number signifi es the percentage of the brew volume which does not fl ow over the coffee grounds. NOTE: If the brewer is[...]

Page 28 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) COFFEE RECIPES: SET PULSE BREW/PREINFUSION This function allows the operator to program the brewer to “pulse” the sprayhead fl ow on and off during a brew cycle (start and stop the fl ow of water out of the spray- head). This feature allows the ability to “fi ne[...]

Page 29 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew – EASY Pulse Brew NOTE: If the brewer is already on the SET PULSE BREW screen, skip steps 1 through 6, and proceed directly to step 7. 1. Press and hold the right hidden button until the dis- play reads SET LANGUAGE. Press the right hidden button unt[...]

Page 30 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting PulseBrew/Preinfusion – MANUAL Pulse Brew NOTE: If the brewer is already on the SET PULSE BREW screen, skip steps 1 through 6, and proceed directly to step 7. 1. Press and hold the right hidden button until the dis- play reads SET LANGUAGE. Press the right hidd[...]

Page 31 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) P3088 BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C REVIEW RECIPES NO YES BREW A BREW B BREW C NO NAME COFFEE MODIFY SHO W NEXT (RECIPE NAME) MODIFY [...]

Page 32 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) COFFEE RECIPES: DRIP TIME This function allows the operator to adjust the DRIP TIME (time from end of sprayhead fl ow to when liquid stops dripping from the funnel). When the brew cycle is complete, the display will show DRIPPING and will countdown the time until the fu[...]

Page 33 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET TEMP This function allows the operator to adjust the brew water temperature in the tank. This also sets the hot water faucet dispense temperature. Procedure for setting the Set T emp Range: 185° to 205° F (85° to 96° C) 1. Press and hold the right hidden button u[...]

Page 34 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. The water must be at the READY temperature or higher for the display to indicate READY TO BREW . If brew lockout is enabled, the brewing process will not start below t[...]

Page 35 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABLE ADS This function allows the operator to choose whether or not to display an advertising message. An ad can be saved to the brewer by either writing the ad using the programming commands, or by entering the ad into the brewer using an AD CARD . This message will b[...]

Page 36 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C ENABLE ADS NO DONE YES WRITE T OP LINE? NO YES NEW AD? CARD NO WRITE 2 LINES 16 CHARS A V AILABLE SCROL THR U ALPHA NEXT ->NEXTLETTER BREW A BREW B BREW C CARD CONT AINS AD SHO W QUIT SA VE AD SETUP COMPLE[...]

Page 37 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABL SANIT A TION This function allows the operator to enable the sanita- tion function and set the time before a cleaning alert will be displayed. Procedure for enabling sanitation Range: 0.0 to 72.0 hrs 1. Press and hold the right hidden button until the dis- play rea[...]

Page 38 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABLE ENERGYSA VR This function allows the operator to enable the mode function and set the idle time. Once the set idle time has expired, the operator can choose to have the heat- ers either turn off, or reduce the tank holding temp to 140° F (60 C). Procedure to enab[...]

Page 39 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) ENABLE FRESH TIMER This function allows the operator to enable the Freshness Alert and set the expiration time. The expiration time is the amount of time the product is allowed to sit in the server/dispenser before a fresh batch is brewed. Procedure for enabling/setting [...]

Page 40 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) REFILL Range: 0 to 155 This function allows the operator to adjust the sensitiv- ity of the refi ll cir cuit. This is mainly a troubleshooting feature. Water in different geographical locations can have different conductivities. By adjusting the sensitivity of the refi[...]

Page 41 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SPRA Y OZ/M This function allows the operator to view or to enter the actual fl ow rate coming out of the sprayhead. This is NOT used to calibrate the actual fl ow rate, but to tell the internal controller how fast the water is fl owing. Procedure to adjust the sprayh[...]

Page 42 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) BYP ASS OZ/M This function allows the operator to view or to enter the actual fl ow rate coming out of the bypass nozzle. This is NOT used to calibrate the actual fl ow rate, but to tell the internal controller how fast the water is fl owing. Procedure to adjust the b[...]

Page 43 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) CALIBRA TE FLOW This function allows the operator to enter the actual fl ow rate of the sprayhead and the bypass by dispens- ing both separately for one minute. The volumes are then entered into the brewer . Procedure to calibrate the sprayhead fl ow rate: 1. Place a c[...]

Page 44 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) CALIBRA TE FLOW (Continued) Procedure to calibrate the bypass fl ow rate: 1. Place a container , accurately graduated and with a minimum capacity of 60 ounces, beneath the fun- nel. NOTE: If the display is already on the BYP ASS CAL screen, skip steps 2 & 3 and proc[...]

Page 45 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) BREW COUNTERS This function allows the operator to track the total num- 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 is not resettable. Procedure to vi[...]

Page 46 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 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. Procedure to enter the asset number: 1. Press and hold the right hidden button unt[...]

Page 47 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE NUMBER This function allows the operator to enter in the tele- phone number to call if service is needed. The ser vice number will be displayed anytime there is a fault mes- sage displayed (See T roubleshooting on page 56). Procedure to enter the service number: [...]

Page 48 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE TOOLS This function allows the testing of individual components and the ability to check switches for proper function. This function also tests the funnel sensor coil’ s frequency (diagnostic tool for troubleshooting purposes only). Procedure to test components[...]

Page 49 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C BREW A BREW B BREW C TEST OUTPUTS? NO YES BREW V AL VE ON NEXT OFF BYP ASS V AL VE ON NEXT OFF REFILL V AL VE ON NEXT OFF T [...]

Page 50 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure to test switches: The following switches can be individually tested: Half Batch Full Batch Left Hidden Brew A Brew B Brew C On/Off 1. Press and hold the right hidden button until the dis- play reads SET LANGUAGE. Press the right hidden button until the display [...]

Page 51 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure to test coil frequency: 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 . 2. Press and release YES . The display should now read TEST OUTPUTS? Press and releas[...]

Page 52 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) F ACTORY DEF AUL TS This function allows the operator to erase ALL of the previously entered recipes and ad messages. Factory- set default values will replace ALL previous settings. Procedure to set factory defaults: 1. Press and hold the right hidden button until the di[...]

Page 53 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) F ACTORY DEF AUL T VALUES Brew Lockout - Enabled Language - English Units - English SWITCH RECIPE Brew A – REGULAR Brew B – DECAF Brew C – BREAKF AST BLEND 37077 071206 REGULAR RECIPE: BREW VOLUMES Half Batch – 64 OZ Full Batch – 128 OZ % BYP ASS Half Batch –[...]

Page 54 PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) F ACTORY DEF AUL T VALUES (Continued) HOT TEA RECIPE: BREW VOLUMES Half Batch – 64 OZ Full Batch – 128 OZ % BYP ASS Half Batch – 0 % Full Batch – 0 % PULSE BREW TIMES Half Batch – Manual :30/:15/:15 Full Batch – Manual :30/:15/:15 DRIP OUT TIMES Half Batch ?[...]

Page 55 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 T echnical Ser vice Department. • Inspection, testing, and repair of electrical equipment should be performed only[...]

Page 56 PROBABLE CAUSE REMEDY PROBLEM TROUBLESHOOTING (cont.) T emperature T oo Low Heating Time T oo Long Fill Time T oo Long T emp Sensor Out Of Range, Check For Bad Connections T emp Sensor Out Of Range, Check Wire For Shorts Equipment will not operate 1. Water temperature in the tank does not meet the ready tempera- ture. 1. T ank Heater failur[...]

Page 57 TROUBLESHOOTING (cont.) PROBABLE CAUSE REMEDY PROBLEM Check plumbing and shut-off valves Check for voltage across the termi- nals at the terminal block. T est the ON/OFF switch. Refer to the test switch procedures on page 50. T est the BREW switch. Refer to the test switch procedures on page 50. T est the brew valve. Refer to the test outpu[...]

Page 58 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Check plumbing and shut-off valves Check tank drain clamp Direction of fl ow arrow must be pointing towards direction of water fl ow . Remove the strainer and check for obstructions. Clear or replace. Check the sensitivity setting. Refer to the REFILL function on page 40. If the left t[...]

Page 59 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Refi ll valve – Disconnect the brewer from the power source and remove wires from refi ll valve coil. Check for continuity across the terminals of the solenoid coil. If continuity is not present, replace the refi ll valve. If continuity is present, the coil may be stuck closed. Shut[...]

Page 60 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water fl ows into tank continuously with power removed from brewer . 1. Refi ll valve 2. Refi ll probe or sensitivity set- ting 3. Control Board Foreign material lodged in valve, holding it in open state. Check the sensitivity setting. Refer to the REFILL function on page 40. If the l[...]

Page 61 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water will not heat or display shows HEA TING TIME TOO LONG. 1. Limit Thermostat 2. T emperature probe 3. T oggle switch (Dual Voltage) Remove power from the brewer . Check for continuity through the limit thermostat. CAUTION: Do not eliminate or bypass limit thermo- stat. Use only repla[...]

Page 62 Remove power from the brewer . Check for continuity between the 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 (T oggle switch must be in 120/208-240V position on 208V and 240V models). There should be a low OHM reading. If no continuity is present, check for [...]

Page 63 No bypass water 1. Bypass valve 2. Recipe settings T est the bypass valve. Refer to the test outputs procedures on page 48. Check to make sure bypass % has been set for the current recipe. TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY 37077 091704[...]

Page 64 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Spitting or unusual steaming from sprayhead or air vent. 1. Lime buildup 2. T emperature probe 3. Control Board Inspect the probe and tank assembly for excessive lime deposits. Delime as required. Remove the probe from the grom- met and submerge in a water bath of approximately 70°F (21[...]

Page 65 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Inconsistent beverage level in server/dispenser Direction of fl ow arrow must be pointing towards the brewer . Re- move the strainer and check for obstructions. Clear or replace. Check operating water pressure to the brewer . It must be between 20 and 90 psi (138 and 620 kPa). T est the[...]

Page 66 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dripping from sprayhead. Water overfl ows fi lter . Beverage overfl ows server . Repair or replace leaky valve BUNN paper fi lters should be used for proper extraction Check sprayhead The brew cycle should be started only with an empty server under the funnel. Adjust the brew volume,[...]

Page 67 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Weak beverage. BUNN paper fi lters should be used for proper extraction For coffee, a suffi cient quantity of fresh drip or regular grind should be used for proper extraction. Bunn-O-Matic sprayhead should be used to properly wet the bed of ground coffee in the funnel The BUNN paper ?[...]

Page 68 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brewer is making unusual noises. The mounting screws on the so- lenoids must be tight or they will vibrate during operation Plumbing lines should not be resting on the countertop. The brewer must be connected to a cold water line. Water pressure to the brewer must not be higher than 90 p[...]

Page 69 MEMORY BOARD SCHEMA TIC WIRING DIA GRAM iCB-D V 37299.0000A 08/04 ©2004 BUNN-O-MA TIC CORPORATION L1 BLU-14 BLU-14 LIMIT THERMOST AT WHI WHI WHI/RED WHI/VIO WHI/RED WHI WHI REFILL DISPENSE J1-1 J1-2 J17-1 J17-5 J15-1 J15-5 J17-10 J17-14 C O N T R O L P C B O A R D COM N.O. VIO BLK BLK-14 BLK-14 BLK-14 WHI/GRN WHI/GRN WHI/BLU WHI WHI/BLU FU[...]

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