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Bunn TU5Q - page 1
TU5Q OPERA TING & SERVICE MANUAL 10777.0000B 4/00 © 1994 Bunn-O-Matic Corporation 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 BUNN ® ...
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Bunn TU5Q - page 2
Page 2 CONTENTS Introduction ............................................................. 2 Warranty .................................................................. 2 User Notices ............................................................ 3 Electrical Requirements ........................................... 4 Plumbing Requirements ........... ...
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Bunn TU5Q - page 3
Page 3 #00831.0000 #00656.0000 ...
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Bunn TU5Q - page 4
Page 4 10777 041500 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power sour ce until specified in Initial Set-Up. The brewer requires either 2-wire, grounded service rated 120 volts ac, or 3-wire, grounded ser vice rated 120/208 or 120/240 volts ac, 20 amp, single phase, 60 Hz. Refer to the product's dataplate abo ...
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Bunn TU5Q - page 5
Page 5 10777 041500 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. Remove the top lid from the brewer . 2. Rotate the control thermostat knob fully counter clockwise to the "OFF" position. Set the three-gallon timer knob at 4 mi ...
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Bunn TU5Q - page 6
Page 6 OPERA TING CONTROLS A. Lighted ON/OFF Switch ON - Placing the switch in the lighted upper position allows the start switch to activate a timed brew cycle. OFF - Placing the switch in the lower 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 ...
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Bunn TU5Q - page 7
Page 7 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 ...
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Bunn TU5Q - page 8
Page 8 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brew cycle will not start (cont.) W ater is not hot Dilution cycle will not start 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 #29329.1000 2. Control Thermostat 3. T ank H ...
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Bunn TU5Q - page 9
Page 9 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY 10777 041500 The brewer must be level or slightly lower in front to syphon properly . Inspect the tank assembly for ex- cessive lime deposits. Delime as required. The water pressure to the brewer must be at least 20 psi(138 kPa). (A) Direction of flow arrow must be pointing towards brewer ...
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Bunn TU5Q - page 10
Page 10 TROUBLESHOOTING (cont.) PROBLEM Dripping from sprayhead W ater flows into tank continu- ously (ON/OFF Switch "ON") W ater flows into tank continu- ously (ON/OFF Switch "OFF") Beverage overflows dispenser W eak beverage PROBABLE CAUSE 1. Syphon System 2. Lime Build-up CAUTION - T ank and tank compo- nents should be delime ...
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Bunn TU5Q - page 11
Page 11 TROUBLESHOOTING (cont.) PROBLEM W eak beverage (cont.) Dry tea leaves remain in the funnel Brewer is making unusal noises PROBABLE CAUSE 4. Funnel Loading 5. Water T emperature 6. Low Brew W ater Volume 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 ...
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Bunn TU5Q - page 12
Page 12 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 ser vi ...
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Bunn TU5Q - page 13
Page 13 SERVICE (cont.) BA TCH SELECTOR SWITCH P2131.40 FIG. 2 BA TCH SELECTOR SWITCH Location: The batch selector switch is located in the front of the hood, above and to the right of the brew funnel. It is the second switch from the right. T esting Procedures: 1. Disconnect the brewer from the power sour ce. 2. Remove the wires from all terminals ...
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Bunn TU5Q - page 14
Page 14 SERVICE (cont.) BREW SOLENOID V AL VE FIG. 4 BREW SOLENOID V AL VE Location: The brew solenoid is located inside the upper rear access panel, on the left side of the bracket when looking at it from the rear of the brewer . Test Procedures: 1. Disconnect the brewer from the power sour ce. 2. Disconnect the white/violet and white/green wires ...
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Bunn TU5Q - page 15
Page 15 4 2 3 1 MINUTES MINUTES BUNN-O-MATIC P/N 05791-0006 120 VAC 5 3 6 4 7 5 6 6 7 8 ...
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Bunn TU5Q - page 16
Page 16 SERVICE (cont.) CONTROL THERMOST A T FIG. 8 CONTROL THERMOST A T P2143.35 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 wire on the ...
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Bunn TU5Q - page 17
Page 17 SERVICE (cont.) DILUTION SOLENOID V AL VE FIG. 10 DILUTION SOLENOID V AL VE FIG. 11 SOLENOID V AL VE TERMINALS P1799 4 2 3 1 MINUTES MINUTES B UNN-O-MATIC P / N 05791-0006 120 VAC 5 3 6 4 7 5 6 6 7 8 P2146.35 Location: The dilution solenoid valve is located behind the upper rear access panel on the right side of the bracket, when looking at ...
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Bunn TU5Q - page 18
Page 18 DILUTION SWITCH FIG. 12 DILUTION SWITCH FIG. 13 DILUTION SWITCH TERMINALS P2131.40 Location: The dilution switch is located in the front of the hood, above and to the left of the brew funnel, and right of the ON/OFF switch. It is the second switch from the left T est Procedures: 1. Disconnect the brewer from the power sour ce. 2. Remove the ...
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Bunn TU5Q - page 19
Page 19 SERVICE (cont.) LIMIT THERMOST A T FIG. 14 LIMIT THERMOST A T P2143.35 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 and remove the black wire from the limit thermostat. 2. With a voltmeter , check the voltage across the black wire removed from the ...
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Bunn TU5Q - page 20
Page 20 SERVICE (cont.) ON/OFF SWITCH FIG. 16 ON/OFF SWITCH P2131.40 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 ...
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Bunn TU5Q - page 21
Page 21 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 ...
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Bunn TU5Q - page 22
Page 22 SERVICE (cont.) T ANK HEA TER FIG. 20 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 or red wires. Connect the brewer to the power source. The indication mus ...
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Bunn TU5Q - page 23
Page 23 10777 041500 ...
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