Instruction/ maintenance manual of the product TU3Q Bunn
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TU3Q Q U IC K BR E W OPERA TING & SERVICE MANUAL BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www .
Page 2 CONTENTS User Notices .................................................................... 3 Electrical & Plumbing Requirements ............................... 4 Initial Set-Up ...............................................................
Page 3 00831.0000F 3/98 ©1988 BUNN-O-MA TIC CORPORATION READ THE ENTIRE OPERA TING MANU AL BEFORE BUYING OR USING THIS PR ODUCT THIS APPLIANCE IS HEA TED WHENEVER CONNECTED T O A POWER SOURCE F AILURE TO COMPL Y RISKS EQUIPMENT D AMAGE, FIRE, OR SHOCK HAZARD Fill water tank before turning -on thermostat or connecting appliance to power sour ce .
Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power sour ce until specified 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 10288 031604 1. Remove the shipping cap from the bulkhead fitting on the rear of the brewer . 2. Attach the flare fitting from the short piece of tubing on the strainer/flow control (supplied) to the water inlet fitting at the rear of the brewer .
Page 6 AUTO SWEETENER SET -UP (cont.) product for at least 4 minutes without shutting off. Some pump systems shut off after a few minutes of continu- ous running. 4. Plug brewer into the power sour ce. 5. Place an empty reservoir under the dilution nozzle of the brewer .
Page 7 10288 031604 OPERA TING CONTROLS A. ON/OFF Switch ON - Placing the switch in the left position allows the start switch to activate a timed brew cycle for three gallons of tea. OFF - Placing the switch in the right position stops the brew cycle.
Page 8 TEA BREWING 1. Begin each brew cycle with a clean empty brew funnel and server . (Be sure the server lid doesn’t interfere with the flow of dilution water .) 2. Insert a BUNN® filter into the funnel. 3. Pour the packet of loose fresh tea leaves into the filter .
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 Ser vice Department.
Page 10 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brew cycle will not start (cont.) W ater is not hot Dilution cycle will not start Inconsistent beverage level in dispenser 6. Brew Timer 7. Brew Solenoid Valve 1. Limit Thermostat CAUTION - Do not eliminate or by- pass limit thermostat or thermal cut-off.
Page 11 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Consistently high or low beverage level in the dispenser Spitting or excessive steaming Drip-out time too long Sweetener is not working 1.
Page 12 TROUBLESHOOTING (cont.) PROBLEM Dripping from sprayhead W ater flows into tank continuously (ON/OFF Switch "ON") (UNSWEET/OFF/SWEET Switch in "UNSWEET" or "SWEET".
Page 13 TROUBLESHOOTING (cont.) PROBLEM W eak beverage (cont.) Dry tea leaves remain in the funnel Brewer is making unusual noises PROBABLE CAUSE 4. Funnel Loading 5. Water T emperature 6. Low Brew Water V olume 1. Funnel Loading 1. Solenoid(s) 2. Plumbing Lines 3.
Page 14 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y .
Page 15 SERVICE (cont.) BREW SOLENOID V AL VE FIG. 2 BREW SOLENOID V AL VE P2087.40 Location: Viewing the brewer from the top, the brew sole- noid valve is mounted on the right side of the brewer. Test Procedures: 1. Disconnect the brewer from the power sour ce.
Page 16 SERVICE (cont.) BREW TIMER (Early Models) FIG. 4 BREW TIMER P2088.50 Location: The brew timer is located in the hood. It consists of the dial plate and circuit board.
Page 17 SERVICE (cont.) DIGIT AL BREW TIMER (Late Models) FIG. 6 DIGIT AL BREW TIMER P2200.50 Location: The timer is located inside the hood, on the left side. Test Procedure. NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board.
Page 18 SERVICE (cont.) TL1 - WHI to Power Cord (100V & 120V) or RED to Power Connector (230V) and WHI to On/Off Switch (100V & 120V) or RED to On/Off Switch (230V) TL2 - WHI/VIO to Brew Solenoid and WHI/VIO to On/Off Switch TL3 - WHI/ORN to Start Switch TL4 - WHI/GRN to Brew Solenoid TL5 - WHI/YEL to Start Switch FIG.
Page 19 SERVICE (cont.) CONTROL THERMOST A T FIG. 8 CONTROL THERMOST A T P2200.50 Location: The control thermostat is located inside hood on the right side. Test Procedures: 1. Disconnect the brewer from the power sour ce. 2. Locate the blue/black wire on the control thermo- stat.
Page 20 SERVICE (cont.) LIMIT THERMOST A T FIG. 10 LIMIT THERMOST A T P2200.50 Location: The limit thermostat is located inside the hood on the tank lid. T est Procedure: 1. Disconnect the brewer from the power source and remove the black wire from the limit thermostat.
Page 21 SERVICE (cont.) ON/OFF SWITCH FIG. 12 ON/OFF SWITCH P2092.40 Location: The ON/OFF switch is located in the front of the hood, above and to the left of the brew funnel. T est Procedure: 1. Disconnect the brewer from the power sour ce. 2. Remove the black and white/violet wires from the switch terminals.
Page 22 If continuity is present as described, reconnect the wires, the switch is operating properly . If continuity is not present as described, replace the switch. Removal and Replacement: 1. Remove the wires from the switch terminals. 2. Compress the clips inside the hood and gently push the switch through the opening.
Page 23 SERVICE (cont.) T ANK HEA TER FIG. 16 T ANK HEA TER Location: The tank heater is located inside the tank and se- cured to the tank lid. T est Procedures: 1.
Page 24 SERVICE (cont.) 10288 031604 Location: Viewing the brewer from the front, the sweetener solenoid is mounted on the left side of the solenoid mounting bracket which is secured to the bottom base housing. T est Procedure: 1. Disconnect the brewer from the power source.
Page 25 10288 031604 SERVICE (cont.) OFF/SELECTOR SWITCH (SWEETENER OPTION) FIG. 20 OFF/SELECTOR SWITCH P2845.40 Location: The OFF/SELECTOR switch is located in the front of the hood, above and to the left of the brew funnel. T est Procedure: 1. Disconnect the brewer from the power sour ce.
Page 26 10288 110503 SCHEMA TIC WIRING DIAGRAM TU3Q (OPTIONAL) READY INDICA TOR BLU/BLK BLK SW . & THERMOST A T LIMIT THERMOST A T L1 BLK BLU/BLK BLK GREEN TA N K HEA TER N WHI WHI WHI WHI SW2 "KEEP WARM HEA TER" SW1 BLK WHI/VIO WHI/VIO WHI WHI WHI/ORA WHI/GRN WHI/YEL SOL 1 2 3 4 5 BREW TIMER 10287.
Page 27 10288 031604 LIMIT THERMOSTAT BLU/BLK TANK HEATER "KEEP WARM" HEATER START L1 N BLK WHI BLK BREW TIMER WHI WHI GREEN WHI/YEL WHI/ORA BLK WHI/GRN WHI/VIO WHI BRN/WHI WHI/VIO WHI WHI S.
An important point after buying a device Bunn TU3Q (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 TU3Q 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 TU3Q - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn TU3Q you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn TU3Q will certainly help you make a decision on the purchase.
If you already are a holder of Bunn TU3Q, 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 TU3Q.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn TU3Q. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn TU3Q 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
