Bunn Single SH manuale d’uso

B UNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www .bunnomatic.com INST ALLA TION & OPERA TING MANU AL SINGLE SH ® WITH SMAR T FUNNEL TM 34025.0000A 10/01 ©2001 Bunn-O-Matic Corporation BU N N ®[...]

Page 2 W ARRANTY Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the date of installation. In addition: 1.) Bunn warrants electronic circuit and/or control boards to be commercially free f[...]

Page 3 T ABLE OF CONTENTS User Notices .............................................................................................................................. 4 Electrical and Plumbing Requirements ...................................................................................... 5 Operating Controls .....................................[...]

Page 4 00656.0000 00831.0000 00658.0000 20201.5600 USER NOTICES The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 10044.0000[...]

Page 5 ELECTRICAL HOOK-UP CAUTION – Improper electrical installation will damage electronic components. 1. An electrician must provide electrical service as specified. 2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source. 3. Remove the front panel beneath the sprayheads. 4. Feed the cord through the [...]

Page 6 OPERA TING CONTROLS OPERA TING CONTROLS (a) BATCH SELECTOR PADS Pressing the pad corresponding to the Small, Medium, or Large batch selects the amount of coffee to be brewed. Pressing a different pad after a brew cycle has been initiated does not change the brew batch in progress. Light indicates the selected batch to brew. (b) ON/OFF PAD Pr[...]

Page 7 INITIAL SETUP CAUTION – The brewer must be disconnected from the power source throughout the initial setup, except when specified in the instructions. 1. Insert an empty funnel into the funnel rails of the brew station. 2. Place an empty server under the funnel. 3. Connect the brewer to the power source. Water will begin flowing into the t[...]

Page 8 GLOSSARY BREW LOCKOUT : The inability to initiate a brew if the water temperature is less than the ready temperature programmed into the brewer . BYP ASS: The process of diverting a portion of the brew water to the outside of the paper filter so that it does not pass through the coffee grounds. This process is sometimes used to optimize the [...]

Page 9 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, etc. This allows for the precise brewing of various flavors of coffee. Programming of the brewer is achieved by entering a certain functi[...]

Page 10 MAIN SCREEN[...]

Page 11 PROGRAMMING THE BREWER (cont.) PROGRAM FUNCTIONS - LEVEL 2 There are three methods of programming the various brewing parameters of the SINGLE TM S H ® with Smart Funnel TM Brewer. METHOD 1: Using a Smart Funnel TM and a G92T DBC Grinder: Certain coffee NAMES are stored in the G92T DBC's memory. When a particular name of coffee is gro[...]

Page 12 P2439 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Procedure for Setting the Recipe: NOTE: Before beginning setup, place a server beneath the sprayhead. 1. Insert the funnel into the grinder and select a batch size to grind. It is not necessary to have coffee beans in the hopper(s) in order to program the brewer. The coffee name is pre-selected [...]

Page 13 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPES (cont.) 8. Using (-) and (+) , set the amount of brew water, in ounces, to be dispensed over the grounds for that particular batch size. 9. When finished, press another batch size and re- peat step #8 for that size. Continue setting all batch sizes. 10. When finished setting all batch [...]

Page 14 22. Using (-) and (+) , set the amount of time the brew cycle will delay (after the presoak cycle shuts off) before resuming brewing. 23. When finished, press another batch size and re- peat until all three batch sizes are set. 24. When finished setting all batch sizes, press DONE. The display will show the ON and OFF TIMES that were entere[...]

Page 15 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE Using a TAG CARD to load coffee names and brew settings into the SINGLE TM SH DBC with Smart Funnel TM : The G92T DBC's memory contains certain coffee names. If the operator uses a coffee name that is not already stored in the grinder's memory, a TAG CARD can be obtained from [...]

Page 16 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET NEW RECIPE: If not using a Smart Funnel TM (with a sensor coil) and/or a G92T DBC Grinder, the brewer will function as a standard BUNN ® Single TM Brewer: It is possible to operate the brewer without using a Smart Funnel TM and/or a G92T DBC Grinder. If a standard funnel, or if a non-DBC grinder [...]

Page 17 REVIEW RECIPES/MODIFY RECIPES/SET UP NO NAME COFFEE FLAVORS: This function has three parts. It allows the opera- tor to view the brew settings for the various coffee names programmed into the brewer. It also allows the operator to modify (change) any of the BREW VOLUMES, BYPASS PERCENTAGES, PULSE BREW TIMES, PRE-INFUSION TIMES and DRIP-OUT [...]

Page 18 BREW OZ (SETTING OR ADJUSTING BREW VOL- UMES) This function allows adjustment of the brew vol- umes for each batch. The indicator signifies volume in ounces per batch. Procedure for modifying recipes - brew ounces: Range: 10.0 oz to 400 oz for all three batch sizes 1. Press and hold the ® pad until the display reads SET NEW RECIPES. Releas[...]

Page 19 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) % BYPASS This function allows adjustment of the amount of water that bypasses the grounds. The number signi- fies the percentage of the brew volume which does not flow over the coffee grounds. Modifying recipes - bypass percentages: Range: 0% to 90% for all three batch sizes NOTE: If the brewer is alr[...]

Page 20 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET PULSE BREW: This function allows the operator to program the brewer to "pulse” the sprayhead flow on and off dur - ing a brew cycle (start and stop the flow of water out of the sprayhead). This feature allows the ability to “fine-tune” the brewer for specific flavor profiles. Pulse brew[...]

Page 21 SET PULSE BREW (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) P2445 34025 100501[...]

Page 22 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew - BY EXAMPLE: 1. This display should read CONT AINER READY? Place a container under the sprayhead. Place a brew funnel containing a filter and grounds on top of the container so that the spray and coffee bed can be viewed. (See Fig. 1) 2. Choose the batch size to be set by pressing [...]

Page 23 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) Setting Pulse Brew - ENTER TIMES: NOTE: No water should flow from the brewer during this set-up process. 1. This display should read 1ST ON TIME X:XX. Choose the batch size to be set by pressing the pad next to the indicator light on the front panel. The batch size indicator selected will be flashing.[...]

Page 24 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SET PREINFUSION This function allows the operator to set an initial soaking of the grounds and a delay time, before the complete brew cycle starts. Procedure for Modifying preinfusion times: Range: On time - off to 4 minutes Off time - off to 4 minutes for all three batch sizes NOTE: If the brewer is [...]

Page 25 DRIP TIME (used on brewers with funnel locks) This function allows the setting or modification of the funnel locks to stay engaged after the end of a brew cycle. This ensures that the funnel cannot be removed until after the liquid has emptied out of the funnel. Procedure to modify drip times: Range: OFF to 10 minutes for all three batch si[...]

Page 26 ENABLE ADS? This function allows the operator to choose whether or not to display the advertising message that was entered into the brewer. This message will be dis- played when the brewer is not in use. Procedure to Enable/Disable Ads : 1. Press and hold the ® pad until the display reads SET NEW RECIPES . Release the ®. Press and release[...]

Page 27 Procedure to adjust the flow rate setting: 1. Press and hold the ® pad until the display reads SET NEW RECIPES . Release the ®. Press and release the ® pad until the display reads BYPASS OZ/M . The number represents what the brewer thinks is the flow rate of the bypass valve in ounces per minute. 2. If the actual flow rate of the bypass [...]

Page 28[...]

Page 29 CALIBRATE FLOW (cont.) Procedures to calibrate the bypass flow rate: 1. Place a container, accurately graduated in ounces, and with a minimum capacity of 60 ounces, below the funnel on the brewer. 2. Press and hold the ® pad until the display reads SET NEW RECIPES . Release the ® pad. Press and release the ® pad until the display reads C[...]

Page 30 BREW COUNTERS This function allows the operator to track the number of brew cycles completed. There is one resettable counter, and one life counter that is not resettable. Procedures to view/reset the brew counters : 1. Press and hold the ® pad until the display reads SET NEW RECIPES . Release the ®. Press and release the ® pad until the[...]

Page 31 SERVICE TOOLS This function allows the testing of individual com- ponents and the ability to check switches for proper function. This function also tests the Soft Heat ® server's status on the brewer (in place or removed), and the funnel sensor coil's frequency (diagnostic tool for troubleshooting purposes only). P2449 P2310 Proc[...]

Page 32 PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) SERVICE TOOLS (cont.) Testing individual components (outputs): This will allow the operator to test the operation of individual components and outputs of the brewer. The components that can be individually tested are as follows: Brew Valve Bypass Valve Funnel Lock Server Refill Valve Tank Heaters Proc[...]

Page 33 SERVICE TOOLS (cont.) PROGRAMMING FUNCTIONS - LEVEL 2 (cont.) 5. The display should read TEST OUTPUTS. 6. In TEST OUTPUTS screen, press NO . This ad- vances to TEST SWITCHES . 7. Pressing NO in this screen will advance to the next function. Press YES in the TEST SWITCHES screen to test the switches. The display will read NOTH- ING PRESSED .[...]

Page 34 FACTORY DEFAULTS 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 ® pad until SET NEW RECIPES appears. Release the ® pad. Press and release ® until the display reads FAC[...]

Page 35 TROUBLESHOOTING[...]

Page 36 TROUBLESHOOTING (cont.) Screen Displayed Possible Cause Troubleshooting Procedure 1. SMART FUNNEL not fully inserted into the funnel rails. 2. Not using a SMART FUNNEL , and the FUNNEL LOCKOUT function is activated (on). 1. Water temperature in the tank does not meet the SET READY TEM- PERATURE. 1. Brew funnel was not removed after the prev[...]

Page 37 TROUBLESHOOTING (cont.) Troubleshooting Procedure Possible Cause Screen Displayed 1. Soft Heat ® Server was moved out of position after the brew cycle was started. 1. ON/OFF switch was pressed after the brew cycle was started. 1. Tank Heater failure 2. Triac Failure 3. Control Board/Thermistor failure To resume brewing, correctly posi- tio[...]

Page 38 TROUBLESHOOTING (cont.) Troubleshooting Procedure Possible Cause Screen Displayed 1. Water shut off to brewer 2. Inlet Solenoid Valve failure 3. Control Board Failure 1. Temperature Sensor Probe wire(s) broken or not making connection. 1. Temperature Sensor Probe wire(s) shorted to housing, or to each other. Check water supply shut-off Serv[...]

Page 39 34025 100501 Equipment will not operate. Brew cycle will not start. Automatic refill will not operate or display shows FILL TIME TOO LONG 1. No power or incorrect voltage. 1. No water 2. ON/OFF switch 3. Brew switch 4. Brew Valve 5. Electronic Control Board 1. No water 2. Water strainer/flow control (.750 GPM) Measure the voltage at the ter[...]

Page 40 34025 100501 Troubleshooting Procedure TROUBLESHOOTING (cont.) Problem Possible Cause Automatic refill will not operate or display shows FILL TIME TOO LONG (cont.) Water flows into tank continuously with power removed from brewer. 3. Refill Probe or Sensitivity Setting 4. Refill Valve 5. Overflow Protection Switch 6. Electronic Control Boar[...]

Page 41 34025 100501 TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Check the sensitivity setting. Refer to the Refill function on page 27. If the left three digit number is less than the right number, the machine “thinks” it is full and the refill valve should be off. If the left number is larger than the right, then[...]

Page 42 34025 34025 100501 TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Remove power from the brewer. Connect a voltmeter across one of the tank heaters. Reapply power to the brewer and refer to Testing Indi- vidual Components on page 32. If the full supply voltage is measured when the tank heater is turned on, and zero[...]

Page 43 34025 100501 TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures 3. Electronic control board 1. Strainer/flow control (.750 GPM) 2. Improper water pressure 3. Brew Valve 4. Bypass Valve 5. Lime buildup Perform the above procedure for testing triacs. If the voltage mea- sured is very low or zero, then sub- stitute a con[...]

Page 44 34025 100501 TROUBLESHOOTING (cont.) Problem Possible Cause T roubleshooting Procedures Adjust the brew volume as required to achieve the recommended vol- ume for each brew cycle. 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 ser[...]

Page 45 34025 100501 TROUBLESHOOTING (cont.) Problem Possible Cause T roubleshooting Procedures Weak beverage (cont.) Brewer is making unusual noises. 6. Incorrect Recipe 1. Solenoid (Inlet) 2. Plumbing lines 3. Water Supply 4. T ank Heaters. Consider adjusting bypass percent- age, preinfusion, or pulse brew . Contact Bunn-O-Matic for sugges- tions[...]

Page 46 LIMIT THERMOSTAT TRIAC TANK HEATER SOL SOL SOL SOL BREW BYPASS REFILL WHI WHI WHI WHI WHI W H I L1 L2 N MT 1 BLU -14 BLK-14 BLK-14 RED N.C. RED OVERFLOW PROTECTION SWITCH FUNNEL LOCK (OPTIONAL) + – AC AC RECTIFIER 4 AMP 24VDC + – WHI BLK BLU/BLK BLK BLU/BLK RED 120/240 OR 120/208 VOLT A.C. SINGLE PHASE 32043.0000B 09/01 © 2000 BUNN-O-M[...]