Bunn TB3-LP manual

TB3 TB3-LP OPERA TING & SER VICE MANU AL BUNN-O-MA TIC CORPORA TION POST OFFICE BO X 3227 SPRINGFIELD , ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 37235.0000D 05/06 ©2004 Bunn-O-Matic Corporation www .bunn.com[...]

Page 2 CONTENTS Introduction ..................................................................... 2 Warranty .......................................................................... 2 User Notices ..................................................................... 3 Electrical & Plumbing Requirements ............................... 4 Initi[...]

Page 3 #00831.0000 #00656.0000 #03408.0000 #03409.0000 USER NOTICES Carefully read and follow all notices on the equipment and in this manual. They were written for your pro- tection. All notices on the equipment should be kept in good condition. Replace any unreadable or damaged 37235 050205 #37881.0000 • FILL WA TER T ANK BEFORE ENERGIZING • [...]

Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power sour ce until specifi ed in Initial Set-Up. 120V model brewers require 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. "A" model brewers require 2-wire, grounded service rated 230 volts ac, 10 amp, single phase, 50 Hz. "[...]

Page 5 INITIAL SET -UP CAUTION - The brewer must be disconnected from the power sour ce throughout the initial set-up, except when specifi ed in the instructions. 1. Remove the top lid from the brewer . 2. Rotate the control thermostat knob fully counter clockwise to the "OFF" position and replace the top lid. 3. Set the delay knob of th[...]

Page 6 INITIAL SET -UP (cont.) 37235 050205 21. When all water stops fl owing, check the water volume in the dispenser . It should be 396 ounces. 22. If not, unplug the brewer and remove the top lid. 23. Adjust the dilution knob of the timer on the right side of the hood as required. Replace the top lid, plug in the brewer , start, and measure ano[...]

Page 7 37235 050205 AUTO SWEETENER SET -UP CAUTION - The brewer must be disconnected from the power sour ce throughout the Initial Set-Up, except when specifi ed in the instructions. 1. Remove the top lid and rear panel. 2. Make sure the brewer water supply is off. 3. Connect sweetener hose from the bag in a box delivery system to the rear fi tti[...]

Page 8 37235 080204 CLEANING CAUTION - CLEAN AND SANITIZE YOUR ICED TEA BREWER DAIL Y 1. Remove and thoroughly clean the entire brew funnel. The funnel tip and screen must be free from any tea particles or residue. Reassemble the funnel. 2. Place the ON/OFF switch in the "OFF" position. Remove and thoroughly rinse the sprayhead. The holes[...]

Page 9 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, and repair of electrical equipment should be per formed only [...]

Page 10 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brew cycle will not start (cont.) Water is not hot Dilution cycle will not start 4. ON/OFF Switch 5. Start Switch 6. Brew Timer 7. Brew Solenoid Valve 8. Internal Flow control (.195 GPM) 1. Limit Thermostat CAUTION - Do not eliminate or bypass limit thermostat or thermal cut-off. Use onl[...]

Page 11 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dilution cycle will not start (cont.) Inconsistent beverage level in dispenser Consistently high or low beverage level in the dispenser 4. Dilution Solenoid Valve 1. Internal Flow Control (.195 GPM) 2. Syphon System 3. Lime Build-up CAUTION - T ank and tank compo- nents should be delimed[...]

Page 12 TROUBLESHOOTING (cont.) PROBLEM Spitting or excessive steaming Drip-out time too long Dripping from sprayhead Water flows into tank continu- ously (ON/OFF Switch "ON") or (UNSWEET/OFF/SWEET Switch in "UNSWEET" or "SWEET" position) Water flows into tank continu- ously (ON/OFF Switch "OFF") or (UNSWEET/[...]

Page 13 TROUBLESHOOTING (cont.) PROBLEM Beverage overfl ows dispenser Weak beverage PROBABLE CAUSE 1. Dispenser 2. Brew Timer 3. Brew Solenoid Valve 4. Dilution Timer 5. Dilution Solenoid Valve 1. Filter T ype 2. T ea 3. Sprayhead 4. Funnel Loading 5. Water T emperature REMEDY The dispenser must be complete- ly empty before starting a brew cycle. [...]

Page 14 REMEDY The BUNN ® paper fi lter must be centered in the funnel and the bed of grounds leveled by gently shak- ing. The nut on the solenoid(s) must be tight or it will vibrate during operation. Plumbing lines should not be rest- ing on the counter top. (A) The brewer must be connected to a cold water line. (B) Water pressure to the brewer [...]

Page 15 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y . Refer to T roubleshooting for assistance in determining the cause of any problem. WARNING - Inspection, testing, and repair of electri- cal equipment should be performed only by qualifi ed servi[...]

Page 16 SERVICE (cont.) BREW SOLENOID V AL VE[...]

Page 17 SERVICE (cont.) CONTROL THERMOST A T 4 2 3 1 MI N U T E S M I N U T E S MI N U TE S M I N U T E S D E L A Y D I L UT I O N D E L A Y DI L U T I O N B U N N - O- M A T I C B U N N - O - M A T IC P / N 3 3 5 5 P / N 3 35 5 5 3 6 4 7 5 6 6 7 8 FIG. 4 CONTROL THERMOST A T P3040 Location: The control thermostat is located inside hood on the righ[...]

Page 18 SERVICE (cont.) DIGIT AL BREW TIMER[...]

Page 19 T o increase a brew volume, place the ON/OFF switch in the "ON" position, press and hold the ST ART switch until three clicks are heard. Release the switch and press it again one or more times. (Failure to re- lease the switch within two seconds after the third click causes the volume setting to be aborted and previous volume sett[...]

Page 20 SERVICE (cont.) DILUTION SOLENOID V AL VE[...]

Page 21 SERVICE (cont.) DILUTION TIMER 4 2 3 1 M I N U T E S M I N U T E S M I N U T E S M I N U T E S D E L A Y D I L U T I O N D E L A Y DI L U T I O N B U N N - O - M A T I C B U N N - O - M A T IC P / N 3 3 5 5 P / N 3 35 5 5 3 6 4 7 5 6 6 7 8 FIG. 10 DILUTION TIMER P3040 Location: The dilution timer is located inside the hood on the right side[...]

Page 22 SERVICE (cont.) LIMIT THERMOST A T[...]

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Page 26 SERVICE (cont.) SWEETNER SOLENOID V AL VE FIG. 20 SWEETNER SOLENOID V AL VE P3298 FIG. 21 SOLENOID V AL VE TERMINALS P2843 37235 050205 WHI/VIO to Brew Solenoid WHI/VIO to Brew Timer TL1 BRN/WHI to Selector Switch Location: Viewing the brewer from the front, the sweetener solenoid is mounted on the right side of the solenoid mounting bracke[...]

Page 27 SERVICE (cont.) T ANK HEA TER FIG. 23 T ANK HEA TER TERMINALS P1284[...]

Page 28 SCHEMA TIC WIRING DIA GRAM TB3, TB3B, TB3-LP OPTIONAL READY INDICA TOR SWITCH & THERMOST A T LIMIT THERMOST A T "KEEP WARM" HEA TER ON/OFF SWITCH 37234.0000C 05/06 © 2004 BUNN-O-MA TIC CORPORA TION ST ART SWITCH DILUTION TIMER DILUTION SOL 1 SOL 2 BREW TIMER BREW T ANK HEA TER BLU BLU/BLK BLK BLK BLK BLK 5 4 3 2 1 5 4 3 2 1 G[...]

Page 29 27432.0000E 0 8 /04 © 1996 BUNN-O-MA TIC CORPORA TION BRN/WHI WHI/BLU WHI/VIO WHI WHI WHI/BLU WHI/YEL WHI/ORN SCHEMA TIC WIRING DIAGRAM TU3, TB3 W/SWEETENER 120 VOL TS AC 2 WIRE SINGLE PHASE READY INDICA TOR BLU/BLK BLK S ELECTOR S WITCH UN S WEET/OFF/ S WEET 37235 050205[...]

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