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Bunn TU3Q manual

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Table of contents for the manual

  • Page 1

    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 .bunnomatic.com 10288.0000N 03/04 ©1988 Bunn-O-Matic Corporation[...]

  • Page 2

    Page 2 CONTENTS User Notices .................................................................... 3 Electrical & Plumbing Requirements ............................... 4 Initial Set-Up .................................................................... 5 Auto Sweetener Set-Up .................................................... 5 Adjusting Brew[...]

  • Page 3

    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 . U[...]

  • Page 4

    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. "B&[...]

  • Page 5

    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 . 3. Flush the water line and securely attach it to the flare fitting on the strainer/flow contro[...]

  • Page 6

    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 . 6. Close the adjustment valve on the rear of the brewer fully (clockwise), the[...]

  • Page 7

    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. Stopping a brew cycle after it has been started will not stop the flow of water into the funnel un[...]

  • Page 8

    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 . Approximately three to five ounces is recommended for three gallons of bevera[...]

  • Page 9

    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. • Inspection, testing, and repair of electrical equipment should be performed only [...]

  • Page 10

    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. Use only BOM replacement part #2[...]

  • Page 11

    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. External Strainer/Flow Control (.750 GPM) 1. Lime Build-up CAUTION - T ank and tank compo- nents should be delimed regularly depending on local water[...]

  • Page 12

    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" position) W ater flows into tank continuously (ON/OFF Switch "OFF") (UNSWEET/OFF/SWEET Switch in "UNSWEET" or "SWEET" p[...]

  • Page 13

    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. W ater Supply 4. T ank Heater REMEDY The BUNN® paper filter must be centered in the[...]

  • Page 14

    Page 14 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 per formed only by qualified servic[...]

  • Page 15

    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. 2. Disconnect the white/violet and white/green wires from the solenoid valve. With the [...]

  • Page 16

    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. T est 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 counter clock- w[...]

  • Page 17

    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. 1. Disconnect the brewer from the power sourc[...]

  • Page 18

    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. 7 DIGIT AL TIMER WIRI[...]

  • Page 19

    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. 3. With a voltmeter , check the voltage across the blue/ black wire [...]

  • Page 20

    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. 2. With a voltmeter , check the voltage across the black wire removed from the [...]

  • Page 21

    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. 3. With a voltmeter , check the voltag[...]

  • Page 22

    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. 3. Push the new switch int[...]

  • Page 23

    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. 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[...]

  • Page 24

    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. 2. With a voltmeter , check the voltage across the brown/white and white/v[...]

  • Page 25

    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. 2. With a voltmeter , check the voltage across the black w[...]

  • Page 26

    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 10287.0000C 10/03 © 1993 BUNN-O-MA TIC CO[...]

  • Page 27

    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 SCHEMATIC WIRING DIAGRAM TU3Q W/SWEETENER 120 VOLTS AC 2 WIRE SINGLE PHASE THERMOSTAT SOL 1 2 3 4 5 SOL WHI/GRN WHI/VIO BREW SWTNR UNSWEET/OFF/SWEET (O[...]