Bunn TB3Q, TB3Q-LP Coffee Maker Manual

USER NOTICES

Carefully read and follow all notices on the equipment and in this manual. They were written for your protection. All notices on the equipment should be kept in good condition. Replace any unreadable or damaged labels.

ELECTRICAL REQUIREMENTS

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.

If the power cord is ever damaged, it must be replaced by the manufacturer or its service agent with a special cord available from the manufacturer or its service agent in order to avoid a hazard.

Proceed as follows:

Electrical Hook-Up

Improper electrical installation will damage electronic components.

1. An electrician must provide electrical service as specified.
2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.
3. Remove top cover from the brewer.
4. Rotate the control thermostat knob fully counterclockwise to the "OFF" position and replace the top cover.
5. Connect the brewer to the power source.
6. If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing has been hooked up, the brewer is ready for Initial Set-Up.

PLUMBING REQUIREMENTS

These brewers must be connected to a cold water system with operating pressure between 20 and 90 psi (138 and 621 kPa) from a ¹⁄2" or larger supply line. A shut-off valve should be installed in the line before the brewer. Install a regulator in the line when pressure is greater than 90 psi (621kPa) to reduce it to 50 psi (345 kPa). The water inlet fitting is ¹⁄4" flare.

NOTE: Bunn-O-Matic recommends ¹⁄4" copper tubing for installations of less than 25 feet and ³⁄8" for more than 25 feet from the ¹⁄2" water supply line. A tight coil of copper tubing in the water line will facilitate moving the brewer to clean the countertop. Bunn-O-Matic does not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type of device may restrict water flow.

This equipment must be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA).

1. Remove the shipping cap from the bulkhead fitting on the rear of the brewer.
2. Flush the water line and securely attach it to the bulkhead fitting on the rear of the brewer.
3. Turn on the water supply.

NOTE: The Flow Control/Strainer assembly is internal, located inside the back panel.

INITIAL SET-UP

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 switch in the "ON" position ("SWEET" or "UNSWEET" position for brewers with a sweetener option), and momentarily press the START switch. Water will flow into the tank and dispenser for three and one-half minutes. Empty the dispenser when this first cycle stops and press the START switch again. Empty the dispenser when the second cycle stops and press the START switch once more. During the third cycle, the tank will fill to its capacity and the excess will flow from the funnel into the dispenser. Empty the dispenser when this third cycle stops.
6. Begin another brew cycle and measure the total water volume from the dispenser. It should be approximately 3 gallons and 12 ounces. (396 ounces). CONCENTRATE MACHINES WILL YIELD ONLY 76 OZ.
7. If not, adjust the timer as required. See Adjusting Brew Volumes.
8. Start, and measure another cycle.
9. Repeat steps 6-8 until the recommended total water volume is achieved.
10. The concentrate valve is pre-adjusted to deliver the correct ratio of brew water to dilution water.
11. Unplug the brewer, remove the top lid, rotate the control thermostat knob fully clockwise to the "ON" position and replace the top lid.
12. Empty the dispenser.
13. Plug in the brewer and wait for the water in the tank to heat to brewing temperature (approximately 20 minutes). Some water will drip from the funnel during this time; this is due to expansion and should not occur thereafter.
14. Begin another brew cycle. Empty the reservoir after water has stopped flowing from the funnel.
15. Allow the water in the tank to heat to the proper temperature.
16. The brewer is now ready to brew approximately 3 gallons of freshly brewed room temperature tea from three to five ounces of loose leaves.

AUTO SWEETENER SET-UP

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".
   
   System delivery pressure must be regulated between 30-40 psi. System also needs to deliver product for at least 4 minutes without shutting off. Some pump systems shut off after a few minutes of continuous running.
4. Plug brewer into the power source.
5. Place an empty reservoir under the dilution nozzle of the brewer.
6. Close the adjustment valve on the rear of the brewer fully (clockwise), then open (counterclockwise) 1/2 turn.
7. Set the selector switch to the "Sweetened" side and press the "Start" switch momentarily. (The sweetener will come out immediately.)
8. Run sweetener for 1 minute, then set selector switch to the "Off" position. The flow will stop.
9. Measure the amount of sweetener dispensed and calculate if the volume needs to be increased or decreased (Dilution cycle is usually between 3 to 3 1/2 minutes).
10. If adjustment is needed, turning the adjustment valve clockwise decreases the amount of sweetener dispensed and turning the adjustment valve counterclockwise increases the amount of sweetener dispensed.
11. After the desired volume has been set, turn the water supply on.
12. Reinstall the top lid, lower and upper rear panels.

The brewer may now be returned to service.

ADJUSTING BREW VOLUMES

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 and hold the START or BREW switch until three clicks are heard. Release the switch (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous volume setting will remain in memory) and press it again one or more times. Each time the switch is pressed, two seconds are added to the brew time period. Allow the brew cycle to finish in order to verify that the desired volume has been achieved.
   To decrease a batch size. Press and release the START or BREW switch once for every two-second interval to be removed from the total brew time period; then immediately press and hold down the START or BREW switch until three clicks are heard. Release the switch. (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous volume setting will remain in memory). Allow the brew cycle to finish in order to verify that the desired volume has been achieved.
2. Setting batch sizes. To set a batch volume, first check that the SET/LOCK switch is in the "SET" position on the circuit board. Press and hold the START or BREW switch until three distinct clicks are heard, and then release the switch. (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous volume setting will remain in memory). View the level of the liquid being dispensed. When the desired level is reached, turn the ON/OFF (UNSWEET/OFF/SWEET) switch to "OFF". The brewer remembers this volume and will continue to brew batches of this size until the volume setting procedure is repeated.
   NOTE: When brewing tea, batch volumes will decrease due to absorption by the tea leaves.
3. Setting programming disable feature. If it becomes necessary to prevent anyone from changing brew times once programmed, you can set the SET/LOCK switch to the "LOCK" position. This will prevent any programming to be done until switch is once again placed in the "SET" position.

OPERATING CONTROLS

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.

Start Switch

Starts a brew cycle when the ON/OFF switch is in the "ON" position.
Starts a brew cycle when the UNSWEET/OFF/SWEET switch is in either the "UNSWEET" or "SWEET" position. (Models with Sweetener Only)

OFF/SELECTOR Switch (Models with Sweetener Only)

UNSWEET - Placing the switch in the left positional allows the start switch to activate a timed brew cycle for three gallons of tea without sweetener.
OFF - Placing the switch in the middle 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.
SWEET - Placing the switch in the right positional allows the start switch to activate a timed brew cycle for three gallons of tea with sweetener.

CLEANING

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. Unplug the brewer. Remove and thoroughly rinse the sprayhead. The holes must be open and clear of any mineral deposits. Wipe the sprayhead panel clean with a damp cloth.
3. Insert the deliming spring into the sprayhead fitting until no more than one inch is visible and move it in and out 5 or 6 times. Reattach the sprayhead.
4. Wash the entire outside surface of the brewer with a clean damp cloth.

DO NOT KEEP BREWED ICED TEA OVERNIGHT. THE SERVER MUST BE CLEANED DAILY.

AUTO SWEETENER CLEANING

1. Remove the connector off of the bag in a box.
2. Place the end in a bucket of hot water (120°-130°F)
3. Place an empty reservoir on the base under the dilution nozzle.
4. Set the selector switch to the "Sweetened" setting.
5. Press and release the "Start" switch.
6. Run three brew cycles in a row, emptying the reservoir after each cycle.
7. When the three cycles have been completed, hook the connector back up to the bag in a box system. (This will keep buildup from occurring in the system.)

This procedure should be performed weekly or as needed to keep the system clear.

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. (For brewers with a sweetener, place the UNSWEET/OFF/SWEET switch in the "SWEET" or "UNSWEET" position.)
7. Momentarily press the START switch.
   
   The funnel contains hot liquids. Remove funnel slowly.
8. Carefully remove the brew funnel and discard the used filter when tea no longer drips from the funnel tip.
9. Place the ON/OFF (UNSWEET/OFF/SWEET) switch in the "OFF" position to prevent a false start.
10. Fresh tea is available at the faucet.

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 personnel.
• All electronic components have 120-240 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the application of external voltages may result in board failure.
• Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.
• Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.
• The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help to avoid twists and kinks in the tubing.
• Make certain that all plumbing connections are sealed and electrical connections tight and isolated.
• This brewer is heated at all times. Keep away from combustibles.

• Exercise extreme caution when servicing electrical equipment.
• Unplug the brewer when servicing, except when electrical tests are specified.
• Follow recommended service procedures
• Replace all protective shields or safety notices

BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644

37236.0000C 05/05 ©2004 Bunn-O-Matic Corporation www.bunnomatic.com