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TB3Q
TB3Q-LP
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
www.bunnomatic.com
37236.0000C 05/05 ©2004 Bunn-O-Matic Corporation
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CONTENTS User Notices ....................................................................3 Electrical & Plumbing Requirements ...............................4 Initial Set-Up ....................................................................5 Auto Sweetener Set-Up ....................................................6 Adjusting Brew Volumes ..................................................7 Operating Controls ...........................................................8 Cleaning ...............
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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. #00831.0000 #37881.0000 ! WARNING Fill water tank before turning - on - thermostat or connecting appliance to power source. Use only on a properly protected To reduce the risk of electric shock, circuit capable of the rated load. Electrically ground the chassis. do
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ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. 120V model brewers require 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. "A" model brewers require 2-wire, grounded service rated 230 volts ac, 10 amp, single phase, 50 Hz. "B" model brewers require 2-wire, grounded service rated 100 volts ac, 15 amp, single phase, 60 Hz. WARNING - If the power cord is ever damaged, it must be replaced by the manu
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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 and replace the top lid. 3. Insert an empty funnel into the funnel rails. 4. Place an empty dispenser on the brewer base. Be prepared to empty the dispenser during these initial steps. 5. Plug in the brewer, place the ON/OFF
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AUTO SWEETENER 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 and both rear panels. 2. Make sure the brewer water supply is off. 3. Connect sweetener hose from the bag in a box delivery system to the rear fitting marked "Sweetener" . IMPORTANT - System delivery pressure must be regulated between 30-40 psi. System also needs to deliver product for at least 4 minutes without shut
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ADJUSTING BREW VOLUMES CAUTION - Disconnect the power source from the brewer prior to the removal of any panel for the replacement or adjustment of any component. NOTE: Prior to setting or modifying batch sizes, check that the brewer is connected to water supply, the tank is properly filled, and a funnel and server are in place. 1. Modifying batch sizes. To modify a batch volume, first check that the SET/LOCK switch is in the “SET” position on the circuit board. To increase a batch size. Press a
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OPERATING 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. OFF - Placing the switch in the right 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 down to its proper level. The switch should always be placed in this position after a brew cycle and whenever the brewer is unattended. B. Start Swi
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TEA BREWING 1. Begin each brew cycle with a clean empty brew funnel and server. (Be sure the server lid doesn’t interfere with the flow of dilution water.) 2. Insert a BUNN® filter into the funnel. 3. Pour the packet of loose fresh tea leaves into the filter. Approximately three to five ounces is recommended for three gallons of beverage. 4. Level the bed of tea leaves by gently shaking. 5. Slide the funnel into the funnel rails until it stops. 6. Place the ON/OFF switch in the “ON” position.
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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 electrical equipment should be performed only by qualified service person- nel. • All electronic components have 120-240 volt ac and low voltage dc potential on their terminals. Shorting of terminals or th
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brew cycle will not start (cont.) 6. Brew Timer Refer to Service - Brew Timer for testing procedures. See page 17 7. Brew Solenoid Valve Refer to Service - Brew Solenoid Valve for testing procedures. See page 16 1. Limit Thermostat Water is not hot Refer to Service - Limit Thermostat CAUTION - Do not eliminate or by- for testing procedures. See page pass limit thermostat or thermal 20. cut-off. Use only BOM replacement part #29329.0001 2. C
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Consistently high or low beverage 1. Strainer/Flow Control (.750GPM) (A) Direction of flow arrow must be level in the dispenser pointing upwards in the brewer. (B) Remove the strainer/flow con- trol and check for obstructions. Clear or replace. Spitting or excessive steaming 1. Lime Build-up Inspect tank assembly for excessive CAUTION - Tank and tank compo- lime deposits. Delime as required. nents should be delimed regularly depending on loca
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dripping from sprayhead The brewer must be level or slightly 1. Syphon System lower in front to syphon properly. 2. Lime Build-up Inspect the tank assembly for ex- CAUTION - Tank and tank compo- cessive lime deposits. Delime as required. nents should be delimed regularly depending on local water condi- tions. Excessive mineral build-up on stainless steel surfaces can ini- tiate corrosive reactions resulting in serious leaks. Refer to Service
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Weak beverage (cont.) 4. Funnel Loading The BUNN® paper filter must be centered in the funnel and the bed of tea leaves leveled by gentle shak- ing. 5. Water Temperature Place an empty funnel on an empty dispenser beneath the sprayhead. Initiate a brew cycle and check the water temperature immediately be- low the sprayhead with a thermom- eter. The reading should not be less than 200°F (93°C). Adjust the con- trol thermostat to increase the
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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 equipment should be performed only by qualified service personnel. The brewer should be disconnected from the power source when servicing, except when electrical tests are required and the test procedure spe- cific
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SERVICE (cont.) If continuity is not present as described, replace the solenoid valve. BREW SOLENOID VALVE 6. Check the solenoid valve for coil action. Connect the brewer to the power source. With ON/OFF switch in the "ON" position ("UNSWEET" position for brewers with sweetener option), press START switch and listen carefully in the vicinity of the solenoid valve for a "clicking" sound as the coil magnet attracts. 7. Disconnect the brewer from the power source. If the sound is heard as describe
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SERVICE (cont.) DIGITAL BREW TIMER 6. With a voltmeter, check the voltage across termi- nals TL1 and TL4 when the "ON/OFF" switch is in the "ON" position. Connect the brewer to the power source. The indication must be 0 volts. If voltage is as described, proceed to #7. If voltage is not as described, disconnect the brewer from the power source and replace the timer. 7. With a voltmeter, check the voltage across termi- nals TL1 and TL4 when the "ON/OFF" switch is in the "ON" position. Connect the
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SERVICE (cont.) DIGITAL BREW TIMER (cont.) NOTE: When brewing tea, volume will decrease due To increase a brew volume, place the ON/OFF to absorption by the tea leaves. switch in the “ON” position, press and hold the START switch until three clicks are heard. Release the switch 3. Setting programming disable feature. If it becomes and press it again one or more times. (Failure to re- necessary to prevent anyone from changing brew time lease the switch within two seconds after the third once prog
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SERVICE (cont.) CONTROL THERMOSTAT brewer to the power source. The indication must be: a) 120 volts ac for two wire 120 volt models. b) 230 volts ac for two wire 230 volt models. c) 100 volts ac for two wire 100 volt models. 8. Disconnect the brewer from the power source. If voltage is present as described, reinstall the capil- lary tube into the tank to the line 5.5" above the bulb, the control thermostat is operating properly. If voltage is not present as described, replace the ther- mostat. P
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SERVICE (cont.) LIMIT THERMOSTAT 5. With a voltmeter, check the voltage across the ex- posed terminal of the limit thermostat and the white wire from the power cord or the red wire from the power connector. Connect the brewer to the power source. The indication must be: a) 120 volts ac for two wire 120 volt models. b) 230 volts ac for two wire 230 volt models. c) 100 volts ac for two wire 100 volt models. 6. Disconnect the brewer from the power source. If voltage is present as described, reconne
