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- TU5Q
- Operating & Service Manual
Bunn TU5Q Operating & Service Manual
Summary of TU5Q
Page 1
Tu5q operating & service manual 10777.0000b 4/00 © 1994 bunn-o-matic corporation bunn-o-matic corporation post office box 3227 springfield, illinois 62708-3227 phone: (217) 529-6601 fax: (217) 529-6644 www.Bunnomatic.Com bunn ®.
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Page 2 contents introduction ............................................................. 2 warranty .................................................................. 2 user notices ............................................................ 3 electrical requirements ................................
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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. 10777 04150...
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Page 4 10777 041500 electrical requirements caution - the brewer must be disconnected from the power source until specified in initial set-up. The brewer requires either 2-wire, grounded service rated 120 volts ac, or 3-wire, grounded service rated 120/208 or 120/240 volts ac, 20 amp, single phase, ...
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Page 5 10777 041500 initial set-up caution - the brewer must be disconnected from the power source 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 counterclockwise to the "off" position. Set...
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Page 6 operating 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...
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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 technical service department. • inspection, testing, and repair of ...
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Page 8 troubleshooting (cont.) problem probable cause remedy brew cycle will not start (cont.) water 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 ...
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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) direct...
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Page 10 troubleshooting (cont.) problem dripping from sprayhead water flows into tank continu- ously (on/off switch "on") water flows into tank continu- ously (on/off switch "off") beverage overflows dispenser weak beverage probable cause 1. Syphon system 2. Lime build-up caution - tank and tank com...
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Page 11 troubleshooting (cont.) problem weak beverage (cont.) dry tea leaves remain in the funnel brewer is making unusal noises probable cause 4. Funnel loading 5. Water temperature 6. Low brew water volume 1. Funnel loading 1. Solenoid(s) 2. Plumbing lines 3. Water supply 4. Tank heater remedy the...
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Page 12 service this section provides procedures for testing and replacing various major components used in this brewer should service become necessary. Refer to troubleshooting for assistance in determining the cause of any problem. Warning - inspection, testing, and repair of electri- cal equipmen...
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Page 13 service (cont.) batch selector switch p2131.40 fig. 2 batch 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. Testing procedures: 1. Disconnect the brewer from the power ...
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Page 14 service (cont.) brew solenoid valve fig. 4 brew solenoid valve 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 source. 2. Disco...
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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 service (cont.) brew timer fig. 6 brew timer p2143.35 location: the brew timer is located in the hood. It consists of the dial plate and circuit board. Test procedure: 1. Disconnect the brewer from the power sour...
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Page 16 service (cont.) control thermostat fig. 8 control thermostat p2143.35 location: the control thermostat is located inside hood on the right side. Test procedures: 1. Disconnect the brewer from the power source. 2. Locate the blue/black wire on the control thermo- stat. 3. With a voltmeter, ch...
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Page 17 service (cont.) dilution solenoid valve fig. 10 dilution solenoid valve fig. 11 solenoid valve terminals p1799 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 p2146.35 location: the dilution solenoid valve is located behind the upper rear access panel on the ...
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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 test procedures: 1. Disconnect...
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Page 19 service (cont.) limit thermostat fig. 14 limit thermostat p2143.35 location: the limit thermostat is located inside the hood on the tank lid. Test procedure: 1. Disconnect the brewer from the power source and remove the black wire from the limit thermostat. 2. With a voltmeter, check the vol...
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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. Test procedure: 1. Disconnect the brewer from the power source. 2. Remove the black and white/violet wires from the switch t...
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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 switc...
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Page 22 service (cont.) tank heater fig. 20 tank heater location: the tank heater is located inside the tank and se- cured to the tank lid. Test 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 bre...
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