Bunn TB3Q User manual

TB3Q
TB3Q-LP
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: [phone] FAX: [phone]
www.bunnomatic.com
37236.0000C 05/05 ©2004 Bunn-O-Matic Corporation

Page 3
WARNING!
Fill water tank before turning - on -
thermostat or connecting appliance
to power source.
Use only on a properly protected
circuit capable of the rated load.
Electrically ground the chassis.
Follow national/local electrical codes.
Do not use near combustibles.
FAILURE TO COMPLY RISKS EQUIPMENT
DAMAGE, FIRE, OR SHOCK HAZARD
READ THE ENTIRE OPERATING MANUAL
BEFORE BUYING OR USING THIS PRODUCT
THIS APPLIANCE IS HEATED WHENEVER
CONNECTED TO A POWER SOURCE
00831.0000F 3/98 ©1998 BUNN-O-MATIC CORPORATION
#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.
#03537.0000
37236 050305
To reduce the risk of electric shock,
do not remove or open cover.
No user-serviceable parts inside.
Authorized service personnel only.
Disconnect power before servicing.
#37881.0000
#06064.0000
• FILL WATER TANK
BEFORE ENERGIZING
• DO NOT OVERLOAD
CIRCUIT
• KEEP AWAY FROM
COMBUSTIBLES
• DO NOT DEFORM
PLUG OR CORD
• FAILURE TO COMPLY
RISKS EQUIPMENT
DAMAGE, FIRE OR
SHOCK
• BREWER ENERGIZED
UNLESS UNPLUGGED
SEE
INSTRUCTIONS
WARNING
BREWERS
TIMER SETTING
CAUTION – Disconnect the powersource from the brewerpriorto the removal
of any panel forthe replacement oradjustment of any component.
NOTE: Check that the brewerisconnected to watersupply, the tank isproperly
filled, and a funnel and serverare inplace, priorto setting ormodifying batch
sizes.
1. Modifying batch sizes. To modify a batch volume, first check that the SET/
LOCK switch isinthe “SET” positiononthe circuit board. If the brewerhas
a batch selectorswitch, positionit to the size to be changed.
To increase a batch size, Press and hold the START orBREW switch until
three clicksare heard. Release the switch and thenpress it againone or
more times. Each time the switch ispressed, two secondsare added to the
brew time period. Allow the brew cycle to finish inorderto verify that the
desired volume hasbeenachieved.
To decrease a batch size, Press and release the START orBREW switch
once forevery two-second interval to be removed from the total brew tim
e
period; thenimmediately press and hold downthe START orBREW switch
until three clicksare heard. Release the switch. Allow the brew cycle to
finish inorderto verify that the desired volume hasbeenachieved.
2. Setting batch sizes. To set a batch volume, first check that the SET/LOCK
switch isinthe “SET” positiononthe circuit board. Press and hold the
START orBREW switch until three distinct clicksare heard (thiswill take
approximately tenseconds), and thenrelease the switch. (Failure to re-
lease the switch withintwo secondsfrom the third click causesthe volume
setting to be aborted). View the level of the liquid being dispensed. When
the desired level isreached, turn the ON/OFF switch to “OFF”. The brewe
r
remembers thisvolume and will continue to brew batchesof thissize until
the volume setting procedure isrepeated. Empty server(s), turn selecto
r
switch to positions that have yet to be set, and repeat batch setting proce-
dure until all batch sizesare set.
NOTE: Whenbrewing coffee, batch volumeswill decrease due to absorptionb
y
the coffee grounds.
32540.0000C 09/01 ©1999 Bunn-O-Matic Corporation
#32540.0000
WATER
INLET
SWEETENER
INLET
#26371.0000 #26371.0001

Page 4
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 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
CAUTION - 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: TheFlow Control/Strainer assembly is internal, located inside the back panel.
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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.
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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 wa-
ter volume from the dispenser. It should be approxi-
mately 3 gallons and 12 ounces. (396 ounces). CON-
CENTRATE 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" posi-
tion 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.

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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 shutting off. Some pump systems shut off after a few minutes of continu-
ous 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 dis-
pensed 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.

Page 7
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 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 program-
ming to be done until switch is once again placed in the “SET” position.
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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 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)
C. 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
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. 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.
CAUTION - 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.
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Page 9 37236 080504
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.
CAUTION - 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.

Page 10
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 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.
WARNING –
• 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
Problem
Brew cycle will not start
Probable Cause
1. No water
2. No power or incorrect voltage to
the brewer
3. Strainer/Flow Control (.750
GPM)
4. ON/OFF
5. Start Switch
Remedy
Water lines and valves to the brewer
must be open.
Check circuit breakers or fuses.
(A) Direction of flow arrow must be
pointing upwards in the brewer.
(B) Remove the strainer/flow con-
trol and check for obstructions.
Clear or replace.
Refer to Service - ON/OFF Switch
for testing. See page 21.
Refer to Service - Start Switch for
testing procedures. See page 22.
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TROUBLESHOOTING (cont.)
PROBLEM PROBABLE CAUSE REMEDY
Brew cycle will not start (cont.)
Water is not hot
Dilution cycle will not start
Inconsistent beverage level in
dispenser
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
part #29329.0001
2. Control Thermostat
3. Tank Heater
1. ON/OFF
2. Start Switch
1. Syphon System
2. Lime Build-up
CAUTION - Tank and tank compo-
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.
3. Water Pressure
Refer to Service - Brew Timer for
testing procedures. See page 17
Refer to Service - Brew Solenoid
Valve for testing procedures. See
page 16
Refer to Service - Limit Thermostat
for testing procedures. See page
20.
Refer to Service - Control Thermo-
stat for testing procedures. See
page 19
Refer to Service - Tank Heater for
testing procedures. See page 25
Refer to Service - ON/OFF Switch
for testing. See page 21
Refer to Service - Start Switch for
testing procedures. See page 22.
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).
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