Bunn TU3QF-EZ manuale d’uso

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 TU3QF - E Z OP E R A TING & S E R V ICE MAN U A L 33030.0000F 8/01 © 2000 Bunn-O-Matic Corporation B U N N ® DISCONTINUED VERSION The inf ormation in this manual is no longer current.[...]

Page 2 CONTENTS User Notices ............................................................. 3 Electrical Requirements ............................................ 4 Plumbing Requirements ........................................... 4 Initial Set-Up ............................................................. 5 Operating Controls ....................[...]

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 protec- tion. All notices on the equipment should be kept in good condition. Replace any unreadable or damaged labels. 33030 052600[...]

Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power sour ce until specified in Initial Set-Up. 120V model brewer requires 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. Proceed as follows: Electrical Hook-Up CAUTION – Improper electrical installation will damage electronic components.[...]

Page 5 INITIAL SET -UP CAUTION - The brewer must be disconnected from the power sour ce throughout the Initial Set-up , except when specified in the instructions. 1. Insert an empty funnel into the funnel rails. 2. Place an empty container of at least 4 gallons capacity under the funnel. 3. Connect the brewer to the power sour ce. 4. Place the &quo[...]

Page 6 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 must be open[...]

Page 7 TU3QF-EZ ADJUSTMENTS & OPTIONAL SETTINGS P1864 33030 082901 P2174 ADJUSTING BREW VOLUMES IMPORT ANT - T ank must be full and refill solenoid shut off prior to making these adjustments. Sprayhead must be installed while making these adjustments. INCREASING THE BREW VOLUME: Use the following steps when you want to increase the amount of wa[...]

Page 8 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 performed only b[...]

Page 9 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT Brew or sanitize cycle will not start 1. Ready light flashing 2. No water 3. No power or incorrect voltage to the brewer 4. ON/OFF switch not in the "ON" po- sition 5. ST ART Switch 6. Low water temperature (Brew lockout is enabled) 7. Brew solenoid valve 8. Cont[...]

Page 10 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT (cont.) Set up brewer according to instruc- tions in section Adjustments -Brew Volumes . (See page 7) Using a stop watch or second hand, time the length of the brew cycle. Record this time inside the top lid. If ser - vice is ever needed again, use the time as reference t[...]

Page 11 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT (cont.) Dripping from sprayhead Weak beverage Drip out time too long 1. Lime build up 2. Brew Solenoid Valve 1. Sprayhead 2. Water temperature 3. Funnel loading 1. Funnel Tip Inspect the tank assembly for ex- cessive lime deposits. Delime as re- quired. Refer to Service -[...]

Page 12 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water does not heat to proper temperature IMPORT ANT : Make sure no tem- perature tests are taken before the ready light is "ON". T ank tempera- ture must be stabilized before read- ings are taken. 1. Ready light flashing 2. W ater not touching temperature probe 3. T emperature[...]

Page 13 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Spitting or excessive steaming Brewer is making unusual noises 1. Lime build up on temperature probe, tank or tank heater 2. T emperature Probe 3. Control Board 1. Plumbing lines 2. W ater supply 3. Lime build up Inspect probe and tank assembly for excessive lime deposits. Delime as requ[...]

Page 14 DIAGNOSTICS Intermittent flashing of the READY indicator indicates that a fault exists. Count the number of flashes between pauses and use this chart as a guide to investigating the fault. FLASHES CAUSE THINGS TO CHECK 1 Reserved for future use. 2 Low T ank Level Fault - Water pressure Level probe dry too long after fill valve is energized [...]

Page 15 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should ser vice 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 qualified servic[...]

Page 16 SERVICE (cont.) BREW SOLENOID V AL VE FIG. 2 BREW SOLENOID V AL VE Location: The brew solenoid valve is mounted on the left side in the bottom rear of the brewer. Test Procedures: 1. Disconnect the brewer from the power sour ce. 2. Disconnect the white and white/green wires from the solenoid valve. With the ON/OFF switch in the "ON&quo[...]

Page 17 SERVICE (cont.) COLD WA TER SOLENOID V AL VE (for faucet) 33030 052600 WHI to Power Cord WHI/BLU to Control Board J1-3 FIG. 5 COLD WA TER V AL VE TERMINALS P2154.45 FIG. 4 COLD WA TER SOLENOID V AL VE Location: The cold water solenoid valve for the faucet is lo- cated inside the hood. It is located in front of the tank, on the right side. T[...]

Page 18 SERVICE (cont.) F AUCET SWITCH P2150.40 33030 052600 FIG. 6 F AUCET SWITCH P2155 ORA to Control Board J3-1 VIO to Control Board J3-2 YEL to Control Board J3-3 FIG. 7 F AUCET SWITCH TERMINALS Location: The faucet switch is located in the front of the hood, above and to the left of the brew funnel, and to the right of the faucet. T est Proced[...]

Page 19 SERVICE (cont.) HOT WA TER SOLENOID V AL VE (for faucet) 33030 030101 WHI/VIO to Relay WHI to Power Cord P2156.50 FIG. 9 HOT WA TER V AL VE TERMINALS FIG. 8 HOT WA TER SOLENOID V AL VE Location: The hot water solenoid valve for the faucet is lo- cated inside the hood. It is located in front of the tank, on the left side. T est Procedures: N[...]

Page 20 SERVICE (cont.) LIMIT THERMOST A T FIG. 10 LIMIT THERMOST A T Location: The limit thermostat is located inside the hood on the tank lid. T est Procedure: 1. Disconnect the brewer from the power sour ce. 2. With a voltmeter , check the voltage across the blue wire on the limit thermostat and the white wire on the tank heater terminal. Connec[...]

Page 21 SERVICE (cont.) ON/OFF SWITCH FIG. 12 ON/OFF SWITCH P2150.40 Location: The ON/OFF switch is located in the front of the hood, above and to the right of the brew funnel. T est Procedure: 1. Disconnect the brewer from the power sour ce. 2. Remove the black and white/red wires from the switch terminals. 3. With a voltmeter , check the voltage [...]

Page 22 SERVICE (cont.) SANITIZE SWITCH P2150.40 33030 052600 FIG. 14 SANITIZE SWITCH FIG. 15 SANITIZE SWITCH TERMINALS P1283 WHI/YEL to Start Switch GRN to Control Board J5-4 Location: The sanitize switch is located in the front of the hood, above and to the left of the brew funnel, and above the faucet switch. T est Procedure: 1. Disconnect the b[...]

Page 23 FIG. 17 ST ART SWITCH TERMINALS P1283 SERVICE (cont.) ST ART SWITCH FIG. 16 ST ART SWITCH P2150.40 Location: The start switch is located in the front of the hood, above and to the far right of the brew funnel. T est Procedure: 1. Disconnect the brewer from the power sour ce. 2. Remove the wires from the terminals. 3. Check for continuity ac[...]

Page 24 SERVICE (cont.) T ANK HEA TER FIG. 18 T ANK HEA TER Location: The tank heater is located inside the tank and secured 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. Connect the brewer to the power source. The indication must be 120 [...]

Page 25 SERVICE (cont.) Control Board FIG. 20 CONTROL BOARD P2159.40 Location: The control board is located inside the hood on the right front behind the start switch. T est Procedure: The test procedures for the control board will vary depending upon the problems experienced by the brewer . Refer to the T roubleshooting guide beginning on page 8. [...]

Page 26 KEEP WARM HEATER 33031.0000C 10/00 ©2000 BUNN-O-MATIC CORPORATION WATER TANK LEVEL PROBE PNK BLK BLK WHI WHI WHI WHI WHI WHI GRN PNK PNK WHI/BLU WHI/RED WHI/YEL WHI/ORA WHI/GRN WHI WHI WHI-14 TEMPERATURE PROBE GREEN TEA BLACK TEA FAUCET SWITCH READY IND. SANITIZE SWITCH START SWITCH SW3 GRN SW2 SW1 WHI/ORA WHI/YEL WHI/RED ON/OFF SWITCH SOL[...]