Instruction/ maintenance manual of the product TU3Q-EZ Bunn
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BU N N ® BUNN-O-MA TIC CORPORA TION TU3Q-EZ POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 TELEPHONE: (217) 529-6601 FAX: (217) 529-6644 29460.
Page 2 CONTENTS Introduction .............................................................. 2 Warranty ................................................................... 2 User Notices ............................................................. 3 Electrical Requirements .
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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. Proceed as follows: Electrical Hook-Up CAUTION – Improper electrical installation will damage electronic components.
Page 5 PLUMBING REQUIREMENTS (cont.) 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 .
Page 6 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.
Page 7 TU3Q-EZ ADJUSTMENTS & OPTIONAL SETTINGS.
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.
Page 9 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT Ready light flashing Brew cycle will not start 1. Brewer has shut down due to malfunction. 1. No water 2. No power or incorrect voltage to the brewer 3. ON/OFF switch not in the "ON" po- sition 4.
Page 10 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT (cont.) Refer to Adjustments and Optional Settings to set brew volume. See page 7. Using a stop watch or sec- ond hand, time the length of the brew cycle. Record this time inside the top lid.
Page 11 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT (cont.) Weak beverage Drip out time too long Dry tea leaves remain in the funnel 1. Sprayhead 2. Water temperatur e 3. Filter type 4. Funnel loading 1. Funnel Tip 1. Sprayhead 2.
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.
Page 13 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.
Page 14 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y .
Page 15 SERVICE (cont.) BREW SOLENOID V AL VE FIG. 2 BREW SOLENOID V AL VE P1898.40 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.
Page 16 SERVICE (cont.) LIMIT THERMOST A T FIG. 4 LIMIT THERMOST A T P1798.40 Location: The limit thermostat is located inside the hood on the tank lid. T est Pr ocedure: 1. Disconnect the brewer from the power source and remove the blue wire from the limit thermostat.
Page 17 SERVICE (cont.) ON/OFF SWITCH FIG. 6 ON/OFF SWITCH P1187.40 Location: The ON/OFF switch is located in the front of the hood, above and to the left of the brew funnel. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce. 2. Remove the black and white/violet wires from the switch terminals.
Page 18 FIG. 9 ST ART SWITCH TERMINALS P1283 SERVICE (cont.) ST ART SWITCH.
Page 19 SERVICE (cont.) T ANK HEA TER FIG. 10 T ANK HEA TER Location: The tank heater is located inside the tank and secured to the tank lid. T est Pr ocedures: 1. Disconnect the brewer from the power supply . 2. With a voltmeter , check the voltage across the black and white wires.
Page 20 SERVICE (cont.) TEMPERA TURE PROBE FIG. 12 TEMPERA TURE PROBE P1798.40 Location: The temperature probe is located on the tank rear of the tank lid, behind the tank heater. T est Pr ocedures: 1. Disconnect the brewer from the power sour ce. 2. Remove the temperature probe from the grom- met.
Page 21 SERVICE (cont.) CONTROL BOARD FIG. 14 CONTROL BOARD P1798.40.
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An important point after buying a device Bunn TU3Q-EZ (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 TU3Q-EZ 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 TU3Q-EZ - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn TU3Q-EZ you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn TU3Q-EZ will certainly help you make a decision on the purchase.
If you already are a holder of Bunn TU3Q-EZ, 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 TU3Q-EZ.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn TU3Q-EZ. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn TU3Q-EZ 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
