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Bunn TWIN - page 1
PR OGRAMMING MANU AL BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 41581.0002A 09/09 ©2009 Bunn-O-Matic Corporation ITB/ITCB ICB/TWIN Infusion Series ® ...
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Bunn TWIN - page 2
Page 2 41581.2 012609 BUNN-O-MA TIC COMMERCIAL PRODUCT W ARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specified 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 ye ...
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Bunn TWIN - page 3
Page 3 CONTENTS Warranty .............................................................................................................2 Introduction ........................................................................................................3 Programming Flow Chart-ICB .................................................................... ...
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Bunn TWIN - page 4
Page 4 SPRA Y OZ/M: XX.X (-) DONE (+) (-) DONE (+) CALIBRA TE FLO W? NO YES BREW COUNTERS? NO YES PROGRAMMING THE BREWER PROGRAMMING FUNCTIONS - LEVEL I PROGRAMMING FUNCTIONS - FLOW CHART PROGRAMMING FUNCTIONS - LEVEL 2 BYP ASS OZ/M: XX.X BREW LOCK OUT? NO DONE YES UNITS METRIC DONE ENG SET LANGU A GE? NO YES REVIEW RECIPES NO YES ASSIGN RECIPE NO ...
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Bunn TWIN - page 5
Page 5 L SPR Y OZ/M: XX.X (-) DONE (+) (-) DONE (+) PROGRAMMING THE BREWER (cont.) PROGRAMMING FUNCTIONS - LEVEL I PROGRAMMING FUNCTIONS - FLOW CHART PROGRAMMING FUNCTIONS - LEVEL 2 L BYPS OZ/M: XX.X BREW LOCK OUT? NO DONE YES UNITS METRIC DONE ENG SET LANGU A GE? NO YES REVIEW RECIPES NO YES ASSIGN RECIPE NO YES SET TEMP 200° (-) DONE (+) READ Y ...
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Bunn TWIN - page 6
Page 6 ITB 41581.2 091609 (-) DONE (+) CALIBRA TE FLO W? NO YES BREW COUNTERS? NO YES PROGRAMMING FUNCTIONS - LEVEL I PROGRAMMING FUNCTIONS - FLOW CHART PROGRAMMING FUNCTIONS - LEVEL 2 DILUTE OZ/M: XX.X BREW LOCK OUT? NO DONE YES UNITS METRIC DONE ENG SET LANGU A GE? NO YES REVIEW RECIPES NO YES ASSIGN RECIPE NO YES MASTER TEMP 205° (-) DONE (+) R ...
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Bunn TWIN - page 7
Page 7 ITCB 41581.2 091609 SPRA Y OZ/M: XX.X (-) DONE (+) (-) DONE (+) CALIBRA TE FLO W? NO YES BREW COUNTERS? NO YES PROGRAMMING FUNCTIONS - LEVEL I PROGRAMMING FUNCTIONS - FLOW CHART PROGRAMMING FUNCTIONS - LEVEL 2 DILUTE OZ/M: XX.X SET RECIPES TEMPS NO YES BREW LOCK OUT? NO DONE YES UNITS METRIC DONE ENG SET LANGU A GE? NO YES REVIEW RECIPES NO ...
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Bunn TWIN - page 8
Page 8 Brew Lockout Enabled Enabled Disabled Disabled Set Language English English English English Units English English English English Review Recipes √ √ √ √ Assign Recipes √ √ √ √ Set New Recipe √ √ √ X Set (Master) T emp 200 ° 200 ° 205 ° 205 ° Ready Degree 5 ° 5 ° 5 ° 5 ° Enable Ads Disabled Disabled Disabled Disa ...
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Bunn TWIN - page 9
Page 9 READ Y T O BREW W A TER TEMP XXX° CARD CONT AINS RECIPE FOR (RECIPE NAME) SHO W QUIT SA VE (RECIPE NAME) NO T SA VED (RECIPE NAME) SETUP COMPLETE READ Y T O BREW W A TER TEMP 200° 5 SEC. POSITION CARD UNDER SENSOR COIL SCROLLS THROUGH ALL BREW SETTINGS FOR THA T RECIPE PROGRAMMING WITH RECIPE CARD Using a RECIPE CARD to load recipes: The R ...
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Bunn TWIN - page 10
Page 10 PROGRAMMING WITH AD CARD Using an AD CARD to load ADS: The information is loaded into the brewer’ s memor y by holding the chip area up to the brewer’ s SENSING COIL . NOTE: Instructions to program the brewer are printed on the AD CARD . Procedure to program the AD: 1. Remove the funnel(s) if present. 2. Position the RECIPE CARD vertica ...
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Bunn TWIN - page 11
Page 11 PROGRAMMING FUNCTIONS - LEVEL 1 * 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 screen press and hold the right hidden button. Release when the display reads: PROGRAMMING THE BREWER 2. ...
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Bunn TWIN - page 12
Page 12 PROGRAMMING THE BREWER (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 reads UNITS . The METRIC ...
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Bunn TWIN - page 13
Page 13 REVIEW RECIPES NO YES NO NAME COFFEE MODIFY SHO W NEXT REGULAR MODIFY SHO W NEXT (RECIPE NAME) MODIFY SHO W NEXT THA T W AS THE LAST RECIPE PRESSING NO WILL ADVANCE TO NEXT FUNCTION SCREEN BY PRESSING "SHOW", THE DISPLA Y WILL AUTOMA TICALL Y SCROLL THROUGH ALL THE BREW SETTINGS FOR THA T RECIPE SCROLLS THROUGH ALL DEFAUL T RECIPE ...
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Bunn TWIN - page 14
Page 14 Setting Pulse Brew – EASY Pulse Brew Range: Minimum: will adjust to the minimum time required to brew that batch using the set brew volumes and flow rate for the sprayhead. Maximum – will adjust depending on se ttings and will al ways be minimum t ime + 3 minutes. The brewer will automatically calculate what the 1ST ON TIME , OFF TIMES ...
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Bunn TWIN - page 15
Page 15 34. When finished, press the o ther bat ch size a nd repeat step # 33. 35. When finished setting both batch sizes, press and release DONE . 36. The display should now read LAST ON: . Adjust the LAST ON TIME using (-) or (+) . If PREINFUSION is desired, set the LAST ON TIME to PreI . 37. When finished, press the o ther bat ch size a nd re ...
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Bunn TWIN - page 16
Page 16 REVIEW RECIPES NO YES BREW OZ: 76 (-) DONE (+) DILUTE OZ: 320.0 (-) DONE (+) DILUTE DELA Y 00.0 (-) DONE (+) REVIEW RECIPES NO YES BREW OZ: 64 (-) DONE (+) % BYP ASS: 20 (-) DONE (+) DRIP TIME: 0:30 (-) DONE (+) SET PULSE BREW? NO YES ICB ITB/ITCB NO NAME COFFEE MODIFY SHO W NEXT TEA 1 MODIFY SHO W NEXT SET PULSE BREW? NO YES DRIP TIME: 1:2 ...
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Bunn TWIN - page 17
Page 17 PROGRAMMING THE BREWER (cont.) * ASSIGN RECIPE to or disable BREW SWITCH(S) This function allows the operator to assign a recipe to (or disable) each of the 3 brew switches (A, B, C). Any saved recipes listed under "REVIEW RECIPES" can be assigned to a brew switch. Only one recipe per brew switch is allowed. Procedure to select sw ...
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Bunn TWIN - page 18
Page 18 * SET NEW RECIPE (COFFEE ONL Y) T o set a new COFFEE recipe using a Smart Funnel and a G9-2T DBC or MHG Grinder: This function allows the operator to set BREW VOL- UMES, BYP ASS %, PULSE BREW/PREINFUSION TIMES AND DRIP OUT TIMES for each coffee name stored in the grinder’ s memor y . Cer tain co ffe e names are sto red in the grinde r’ ...
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Bunn TWIN - page 19
Page 19 PROGRAMMING THE BREWER (cont.) * SET TEMP - ICB (MASTER TEMP - ITCB) 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° - 96° C) 1. Press and hold the right hidden button until the dis ...
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Bunn TWIN - page 20
Page 20 PROGRAMMING THE BREWER (cont.) 12. Select DONE . The display should now read WRITE BTM LINE? . 13. T o write the bottom line, select YES. 14. T o skip the bottom line, select NO . a. If neither a top nor bottom line was written, the display should now read ENABL SANIT A TION . b. If only a top line was written, the ad will be displayed foll ...
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Bunn TWIN - page 21
Page 21 PROGRAMMING THE BREWER (cont.) * ENABLE ENERGY SA VER This function allows the operator to enable the ENERGY SA VINGS mode function and set the idle time. Once the set idle time has expired, the operator can choose to have the heaters either turn off, or reduce the tank holding temp to 140° F (60° C). Procedure to enable energy savings mo ...
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Bunn TWIN - page 22
Page 22 * REFILL Range: 0 to 155 This function allows the operator to adjust the sensitiv- ity of the refill cir cuit. This is mainly a troubleshooting feature. Water in different geographical locations can have dif fere nt c ondu ctiviti es. By adjus ting the sensiti vity of the refill circuit, this will allow the brewer to operate under various ...
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Bunn TWIN - page 23
Page 23 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) PROGRAMMING THE BREWER (cont.) 2. If the actual flow rate of the nozzle is known but is different than the number on the display , use the (-) and (+) to enter the correct flow rate. 3. When finished, select DONE . This saves the new setting and advances to the next screen, CALIBRA TE FLOW . T o ex ...
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Bunn TWIN - page 24
Page 24 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) PROGRAMMING THE BREWER (cont.) * CALIBRA TE FLOW (cont.) SPRA YHEAD CAL NO YES CALIBRA TE FLO W? NO YES BREW COUNTERS CONT AINER READ Y? QUIT YES CALIBRA TE SPRA Y QUIT ST ART CALIBRA TE SPRA Y 60 SEC T O FINISH SPRA YHD OZ XX.X (-) DONE (+) NEW SPRA Y FLO W XX.X OZM DILUTION CAL? QUIT YES CONT AINER ...
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Bunn TWIN - page 25
Page 25 NOTE: If the display is already on the DILUTION CAL screen, skip steps 2-3 and proceed directly to step 4. 2. Press and hold the right hidden switch until the display reads SET LANGUAGE. Press and release the right hidden switch until the display reads CALIBRA TE FLOW? 3. Select YES to advance to SPRA Y HEAD CAL screen. Select NO to advance ...
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Bunn TWIN - page 26
Page 26 * 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 (up to) six resettable counters, and one life counter that is not resettable. Procedure to view/reset the brew counters: 1. Press and hold the right hidden ...
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Bunn TWIN - page 27
Page 27 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) PROGRAMMING THE BREWER (cont.) * SET RECIPE TEMPS (ITCB only) This function allows the operator to set separate tem- peratures for each selected recipe. NOTE: Setting recipe temps will override the MASTER TEMP . The tank will hold at the lowest temperature between the three selected recipes stored in ...
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Bunn TWIN - page 28
Page 28 * ASSET NUMBER This function allows the operator to enter the machine'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 switch until the display reads SET LANGUAGE. Press and release the right hidden swit ...
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Bunn TWIN - page 29
Page 29 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 Service Department. • Inspection, testing, andrepair of electrical equipmentsho ...
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Bunn TWIN - page 30
Page 30 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 ...
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Bunn TWIN - page 31
Page 31 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 ...
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Bunn TWIN - page 32
Page 32 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Check plumbing and shut-off valves 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 three digit number is less than the right number , the machine “thinks” it is full and the refill ...
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Bunn TWIN - page 33
Page 33 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Refill valve – Disconnect the brewer from the power sour ce and remove wires from refill valve coil. Check for continuity across the terminals of the solenoid coil. If continuity is not present, replace the refill valve. If continuity is present, the coil may be stuck closed. Shut w ...
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Bunn TWIN - page 34
Page 34 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water flows into tank continuously with power removed from brewer . 1. Refill valve 2. Refill 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 left ...
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Bunn TWIN - page 35
Page 35 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 ank heaters 4. Control Board Remove power from the brewer . Check for continuity through the limit thermostat. CAUTION: Do not eliminate or bypass limit thermo- stat. Use only repl ...
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Bunn TWIN - page 36
Page 36 No bypass water Spitting or unusual steaming from sprayhead or air vent. 1. Bypass valve 2. Recipe settings 1. Lime buildup 2. T emperature probe 3. Control Board 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. Ins pect th e prob e and ta nk asse mbly ...
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Bunn TWIN - page 37
Page 37 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Inconsistent beverage level in server/dispenser Check operating water pressure to the brewer . It must be between 20 and 90 psi (138 and 620 kPa). T est the brew valve. Refer to test outputs on page 48. T urn the valve on for 30 seconds and collect the water dispensed from the spray- hea ...
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Bunn TWIN - page 38
Page 38 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dripping from sprayhead. Water overflows filter . Beverage overflows server . Brewer is making unusual noises. Repair or replace leaky valve BUNN paper filters should be used for proper extraction Check sprayhead The brew cycle should be started only with an empty server under the fu ...
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Bunn TWIN - page 39
Page 39 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Weak beverage. BUNN paper filters should be used for proper extraction For coffee, a sufficient 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 fil ...
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