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Summary of Contents for Bunn TU3Q
- Page 1 TU3Q B RE Q UI OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www.bunnomatic.com 10288.0000N 03/04 ©1988 Bunn-O-Matic Corporation...
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Page 2: Table Of Contents
This warranty is conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Office Box 3227, Springfield, Illinois 62708-3227;... -
Page 3: User Notices
FAILURE TO COMPLY RISKS EQUIPMENT DAMAGE, FIRE, OR SHOCK HAZARD READ THE ENTIRE OPERATING MANUAL BEFORE BUYING OR USING THIS PRODUCT THIS APPLIANCE IS HEATED WHENEVER CONNECTED TO A POWER SOURCE 00831.0000F 3/98 ©1988 BUNN-O-MATIC CORPORATION Page 3 #03408.0002 #03409.0002 #03536.0000 10288 031604... -
Page 4: Electrical & Plumbing Requirements
" water supply line. A tight coil of copper tubing in the water line will facilitate moving the brewer to clean the countertop. Bunn-O-Matic does not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type of device may restrict water flow. -
Page 5: Initial Set-Up
PLUMBING REQUIREMENTS (cont.) Remove the shipping cap from the bulkhead fitting on the rear of the brewer. 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. Flush the water line and securely attach it to the flare fitting on the strainer/flow control. -
Page 6: Adjusting Brew Volumes
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. Plug brewer into the power source. Place an empty reservoir under the dilution nozzle of the brewer. Close the adjustment valve on the rear of the brewer fully (clockwise), then open (counterclockwise) 1/2 turn. -
Page 7: Operating 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. Stopping a brew cycle after it has been started will not stop the flow of water into the funnel until the tank syphons down to its proper level. -
Page 8: Tea Brewing
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.) Insert a BUNN® filter into the funnel. Pour the packet of loose fresh tea leaves into the filter. Approximately three to five ounces is recommended for three gallons of beverage. -
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 Technical Service Department. • Inspection, testing, and repair of electrical equipment should be performed only by qualified service person- nel. - Page 10 TROUBLESHOOTING (cont.) PROBLEM Brew cycle will not start (cont.) Water is not hot Dilution cycle will not start Inconsistent beverage level in dispenser PROBABLE CAUSE 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 Consistently high or low beverage level in the dispenser Spitting or excessive steaming Drip-out time too long Sweetener is not working PROBABLE CAUSE 1. External Strainer/Flow Control (.750 GPM) 1. Lime Build-up CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water condi- tions.
- Page 12 Remove the Brew Solenoid Valve and clean any obstruction. Rebuild or replace the valve if necessary. See page 15. BUNN® paper filters must be used for proper extraction. A sufficient quantity of fresh, loose tea leaves should be used for proper extraction.
- Page 13 2. Plumbing Lines 3. Water Supply 4. Tank Heater Page 13 REMEDY The BUNN® paper filter must be centered in the funnel and the bed of tea leaves leveled by gentle shak- ing. Place an empty funnel on an empty dispenser beneath the sprayhead.
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Page 14: Service
SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any problem. WARNING - Inspection, testing, and repair of electri- cal equipment should be performed only by qualified service personnel. -
Page 15: Brew Solenoid Valve
SERVICE (cont.) BREW SOLENOID VALVE FIG. 2 BREW SOLENOID VALVE 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 source. 2. -
Page 16: Brew Timer (Early Models)
SERVICE (cont.) BREW TIMER (Early Models) FIG. 4 BREW TIMER Location: The brew timer is located in the hood. It consists of the dial plate and circuit board. Test Procedure: 1. Disconnect the brewer from the power source. 2. Remove the wires from terminals TL3, TL4, & TL5 of the timer and rotate the dial fully counterclock- wise. -
Page 17: Digital Brew Timer (Late Models)
SERVICE (cont.) DIGITAL BREW TIMER (Late Models) FIG. 6 DIGITAL BREW TIMER 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.) DIGITAL BREW TIMER (Late Models) (cont.) To increase a brew volume, place the ON/OFF switch in the “ON” position, press and hold the START 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 pre- vious volume setting will remain in memory.) Each...
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Page 19: Control Thermostat
SERVICE (cont.) CONTROL THERMOSTAT FIG. 8 CONTROL THERMOSTAT Location: The control thermostat is located inside hood on the right side. Test Procedures: 1. Disconnect the brewer from the power source. 2. Locate the blue/black wire on the control thermo- stat. 3. -
Page 20: Limit Thermostat
SERVICE (cont.) LIMIT THERMOSTAT FIG. 10 LIMIT THERMOSTAT Location: The limit thermostat is located inside the hood on the tank lid. Test Procedure: 1. Disconnect the brewer from the power source and remove the black wire from the limit thermostat. 2. -
Page 21: On/Off Switch
SERVICE (cont.) ON/OFF SWITCH FIG. 12 ON/OFF SWITCH Location: The ON/OFF switch is located in the front of the hood, above and to the left of the brew funnel. Test Procedure: 1. Disconnect the brewer from the power source. 2. Remove the black and white/violet wires from the switch terminals. -
Page 22: Start Switch
SERVICE (cont.) START SWITCH FIG. 14 START SWITCH Location: The start switch is located in the front of the hood, above and to the right of the brew funnel. Test Procedure: 1. Disconnect the brewer from the power source. 2. Remove the wires from all terminals. 3. -
Page 23: Tank Heater
SERVICE (cont.) TANK HEATER FIG. 16 TANK HEATER Location: The tank heater is located inside the tank and se- cured to the tank lid. Test Procedures: 1. Disconnect the brewer from the power supply. 2. With a voltmeter, check the voltage across the black and white wires on 100 volt and 120 volt models or the black and red wires for 230 volt models. -
Page 24: Sweetener Solenoid Valve
SERVICE (cont.) SWEETENER SOLENOID VALVE (OPTIONAL) FIG. 18 SWEETENER SOLENOID VALVE 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. Test Procedure: 1. -
Page 25: Wiring Diagrams
SERVICE (cont.) OFF/SELECTOR SWITCH (SWEETENER OPTION) FIG. 20 OFF/SELECTOR SWITCH Location: The OFF/SELECTOR switch is located in the front of the hood, above and to the left of the brew funnel. Test Procedure: 1. Disconnect the brewer from the power source. 2. -
Page 26: Wiring Diagrams
SW. & THERMOSTAT THERMOSTAT BLU/BLK WHI/VIO WHI/VIO BREW WHI/ORA TIMER WHI/GRN WHI/YEL 120 VOLTS AC 2 WIRE 100 VOLTS AC 2 WIRE SINGLE PHASE GREEN TANK HEATER "KEEP WARM HEATER" 10287.0000C 10/03 © 1993 BUNN-O-MATIC CORPORATION Page 26 10288 110503... - Page 27 READY INDICATOR BLU/BLK LIMIT THERMOSTAT THERMOSTAT BLU/BLK UNSWEET/OFF/SWEET WHI/VIO BREW TIMER BRN/WHI WHI/GRN 120 VOLTS AC 10287.0001C 03/04 © 2003 BUNN-O-MATIC CORPORATION 2 WIRE SINGLE PHASE GREEN TANK HEATER "KEEP WARM" HEATER BREW WHI/VIO WHI/ORA WHI/GRN WHI/YEL SWTNR WHI/VIO Page 27...