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Bunn TU3QF-EZ Operating & Service Manual

Summary of TU3QF-EZ

  • Page 1

    Bunn-o-matic corporation post office box 3227 springfield, illinois 62708-3227 phone: (217) 529-6601 fax: (217) 529-6644 www.Bunnomatic.Com tu3qf-ez operating & service manual 33030.0000f 8/01 © 2000 bunn-o-matic corporation bunn ® discontinued version the information in this manual is no longer cur...

  • Page 2

    Page 2 contents user notices ............................................................. 3 electrical requirements ............................................ 4 plumbing requirements ........................................... 4 initial set-up ........................................................

  • Page 3

    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 05260...

  • Page 4

    Page 4 electrical requirements caution - the brewer must be disconnected from the power source 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 ...

  • Page 5

    Page 5 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. Insert an empty funnel into the funnel rails. 2. Place an empty container of at least 4 gallons capacity under the funnel. 3. Connect th...

  • Page 6

    Page 6 cleaning caution - clean and sanitize your iced tea brewer daily 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 rins...

  • Page 7

    Page 7 tu3qf-ez adjustments & optional settings p1864 33030 082901 p2174 adjusting brew volumes important - tank 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 step...

  • Page 8

    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 technical service department. • inspection, testing, and repair of ...

  • Page 9

    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. Start switch 6. Low water temperature (brew lockout is ...

  • Page 10

    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 i...

  • Page 11

    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 ...

  • Page 12

    Page 12 troubleshooting (cont.) problem probable cause remedy water does not heat to proper temperature important: make sure no tem- perature tests are taken before the ready light is "on". Tank tempera- ture must be stabilized before read- ings are taken. 1. Ready light flashing 2. Water not touchi...

  • Page 13

    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. Temperature probe 3. Control board 1. Plumbing lines 2. Water supply 3. Lime build up inspect probe and tank asse...

  • Page 14

    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 tank level fault - water pressure level ...

  • Page 15

    Page 15 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...

  • Page 16

    Page 16 service (cont.) brew solenoid valve fig. 2 brew solenoid valve 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 source. 2. Disconnect the white and white/green wires from the solenoid valv...

  • Page 17

    Page 17 service (cont.) cold water solenoid valve (for faucet) 33030 052600 whi to power cord whi/blu to control board j1-3 fig. 5 cold water valve terminals p2154.45 fig. 4 cold water solenoid valve location: the cold water solenoid valve for the faucet is lo- cated inside the hood. It is located i...

  • Page 18

    Page 18 service (cont.) faucet switch p2150.40 33030 052600 fig. 6 faucet switch p2155 ora to control board j3-1 vio to control board j3-2 yel to control board j3-3 fig. 7 faucet switch terminals location: the faucet switch is located in the front of the hood, above and to the left of the brew funne...

  • Page 19

    Page 19 service (cont.) hot water solenoid valve (for faucet) 33030 030101 whi/vio to relay whi to power cord p2156.50 fig. 9 hot water valve terminals fig. 8 hot water solenoid valve location: the hot water solenoid valve for the faucet is lo- cated inside the hood. It is located in front of the ta...

  • Page 20

    Page 20 service (cont.) limit thermostat fig. 10 limit thermostat location: the limit thermostat is located inside the hood on the tank lid. Test procedure: 1. Disconnect the brewer from the power source. 2. With a voltmeter, check the voltage across the blue wire on the limit thermostat and the whi...

  • Page 21

    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. Test procedure: 1. Disconnect the brewer from the power source. 2. Remove the black and white/red wires from the switch ter...

  • Page 22

    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 f...

  • Page 23

    Page 23 fig. 17 start switch terminals p1283 service (cont.) start switch fig. 16 start 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. Test procedure: 1. Disconnect the brewer from the power source. 2. Remove the wires f...

  • Page 24

    Page 24 service (cont.) tank heater fig. 18 tank heater location: the tank heater is located inside the tank and secured 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 wires. Connect the brewer to th...

  • Page 25

    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. Test procedure: the test procedures for the control board will vary depending upon the problems experienced by the brewer. Refer to ...

  • Page 26

    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 ...