Instruction/ maintenance manual of the product TB3 Bunn
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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.
Page 2 CONTENTS Introduction ..................................................................... 2 Warranty .......................................................................... 2 User Notices ...................................................
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.
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.
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.
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.
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.
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.
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.
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 (.
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/OF.
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.
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.
Page 15 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y .
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.
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.
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.
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/W.
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.
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 .
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An important point after buying a device Bunn TB3 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bunn TB3 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bunn TB3 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn TB3 you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn TB3 will certainly help you make a decision on the purchase.
If you already are a holder of Bunn TB3, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bunn TB3.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn TB3. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn TB3 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
