Instruction/ maintenance manual of the product TU5Q Bunn
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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 .
Page 2 CONTENTS Introduction ............................................................. 2 Warranty .................................................................. 2 User Notices ............................................................ 3 Electrical Requirements .
Page 3 #00831.0000 #00656.0000.
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.
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.
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.
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.
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.
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).
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.
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.
Page 12 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y .
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Page 23 10777 041500.
An important point after buying a device Bunn TU5Q (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 TU5Q 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 TU5Q - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn TU5Q you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn TU5Q will certainly help you make a decision on the purchase.
If you already are a holder of Bunn TU5Q, 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 TU5Q.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn TU5Q. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn TU5Q 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
