Bunn TU5Q User Manual
®
BUNN
TU5Q
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
10777.0000B 4/00 © 1994 Bunn-O-Matic Corporation
www.bunnomatic.com
CONTENTS
Introduction ............................................................. 2
Warranty .................................................................. 2
User Notices ............................................................ 3
Electrical Requirements ........................................... 4
Plumbing Requirements .......................................... 4
Initial Set-Up............................................................ 5
Operating Controls................................................... 6
Cleaning................................................................... 6
Tea Brewing ............................................................. 6
Troubleshooting ....................................................... 7
Service................................................................... 12
Wiring Diagrams.................................................... 23
INTRODUCTION
This equipment will brew a three or five-gallon batch of fresh tea into an awaiting dispenser. The tea will be
dispensed at approximately room temperature to conserve ice. The brewer is only for indoor use on a sturdy
counter or shelf and requires a minimium of 40 inches of clearance above the counter.
WARRANTY
Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from
defects in material and workmanship existing at the time of manufacture and appearing within one year from the
date of installation. In addition:
1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects in material
and workmanship for two years from the date of installation.
2.) Bunn warrants the compressor on refrigeration equipment to be commercially free from defects in mate-
rial and workmanship for two years from the date of installation.
3.) Bunn warrants that the grinding burrs on coffee grinding equipment will grind coffee to meet original
factory screen sieve analysis for three years from date of installation or for 30,000 pounds of coffee, whichever
comes first.
This warranty does not apply to any equipment, component or part that was not manufactured by Bunn or
that, in Bunn’s judgement, has been affected by misuse, neglect, alteration, improper installation or operation,
improper maintenance or repair, damage or casualty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR
ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of Bunn are
not authorized to make modifications to this warranty or to make additional warranties that are binding on Bunn.
Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and should not
be relied upon.
The Buyer shall give Bunn prompt notice of any claim to be made under this warranty by telephone at (217)
529-6601 or by writing to Post Office Box 3227, Springfield, Illinois, 62708-3227. If requested by Bunn, the
Buyer shall ship the defective equipment prepaid to an authorized Bunn service location. If Bunn determines, in
its sole discretion, that the equipment does not conform to the warranty, Bunn shall repair the equipment with no
charge for parts during the warranty period and no charge for labor by a Bunn Authorized Service Representative
during the warranty period. If Bunn determines that repair is not feasible, Bunn shall, at its sole option, replace
the equipment or refund the purchase price for the equipment.
THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE
SALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AS
SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, REPLACEMENT OR REFUND.
In no event shall Bunn be liable for any other damage or loss, including, but not limited to, lost profits, lost
sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.
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ELECTRICAL REQUIREMENTS
CAUTION - The brewer must be disconnected from the power source until specified in
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, 60 Hz. Refer to the product's dataplate above the dilution
nozzle for actual voltage of your particular brewer model.
Electrical Hook-Up
CAUTION – Improper electrical installation will damage electronic components.
1. An electrician must provide electrical service as specified.
2. Remove top lid and rotate the control thermostat knob fully counterclockwise to the "OFF" position and
replace top lid.
3. Remove the lower rear panel, feed the cord through the strain relief at the rear of the brewer and connect it to
the terminal block.
4. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.
5. Connect the brewer to the power source and verify voltage at the terminal block.
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
.
WARNING - The brewer must be electrically grounded using the green screw near the terminal block. Do not
assume a plumbing line will provide an adequate ground.
Initial Set-Up.
PLUMBING REQUIREMENTS
The brewer must be connected to a cold water system with operating pressure between 30 and 90 psi(207
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(621 kPa) 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. Attach the female fitting from the short piece of tubing on the strainer/flow control (supplied) to the water
inlet fitting at the rear of the brewer.
2. Flush the water line and securely attach it to the flare fitting on the strainer/flow control.
3. Turn on the water supply.
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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. Set the three-gallon timer
knob at 4 minutes, the five-gallon timer knob at 6 3/4 minutes, and replace the top lid.
3. Insert an empty funnel into the funnel rails.
4. Place an empty dispenser on the brewer base.
5. Connect the brewer to the power source. Place the On/Off switch in the lighted "ON" position, the dilution
switch in the "NO DILUTION" position, the batch selector in the 'FIVE GALLON" position, and momentarily
press the start switch. Water will flow into the tank for approximately 6 3/4 minutes. Press the start switch
again to initiate a second cycle. When the second cycle stops, 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 the flow of water from the funnel stops.
6. Place the dilution switch in the "DILUTION" position and press the start switch to begin another brew cycle.
When the flow of water stops, measure the total water volume from the dispenser. It should be approximately
5 gallons and 15 ounces. (655 ounces.)
7. If not, disconnect the brewer from the power source, remove the top lid, and adjust the five gallon timer knob
up or down, as required.
8. Replace the top lid, connect the brewer to the power source, start, and measure another cycle.
9. Repeat steps 6-8 until the recommended total water volume (655 ounces) is achieved.
10. Place the batch selector in the 'THREE GALLON" position and press the start switch to begin another brew
cycle. When the flow of water stops, measure the total water volume from the dispenser. It should be approximately 3 gallons and 9 ounces. (393 ounces)
11. If not, disconnect the brewer from the power source, remove the top lid, and adjust the three gallon timer
knob up or down, as required.
12. Replace the top lid, connect the brewer to the power source, start, and measure another cycle.
13. Repeat steps 10-12 until the recommended total water volume (393 ounces) is achieved.
14. The concentrate is pre-adjusted to deliver the correct ratio of water over the funnel to dilution water.
15. Disconnect the brewer from the power source, remove the top lid, rotate the control thermostat knob fully
clockwise to the "ON" position and replace the top lid.
16. Empty the dispenser.
17. Connect the brewer to the power source 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.
18. Begin another brew cycle. Empty the reservoir after water has stopped flowing from the funnel.
19. Allow the water in the tank to heat to the proper temperature.
20. The brewer is now ready to brew approximately 3 or 5 gallons of freshly brewed room temperature tea using
approximately 1 ounce of loose leaves per gallon of finished iced tea.
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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 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. Dilution/No Dilution Selector Switch
Dilution - Placing the switch in the upper position produces fully diluted iced tea from the brew cycle.
No Dilution - Placing the switch in the lower position produces only tea concentrate that will need to be diluted
in another manner before it is ready to serve.
C. 3-Gallon/5-Gallon Selector Switch
3-Gallon - Placing the switch in the upper position produces three gallons of iced tea (set on "DILUTION") or 76
oz. of iced tea concentrate (set on "NO DILUTION") from the brew cycle.
5-Gallon - Placing the switch in the lower position produces five gallons of iced tea (set on "DILUTION") or 126
oz. of iced tea concentrate (set on "NO DILUTION") from the brew cycle.
D. Start Switch
Starts a brew cycle when the ON/OFF switch is in the "ON" position.
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.
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 one ounce is recommended for each
gallon of finished 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.
7. Place the batch selector switch in the desired position.
8. Place the dilution switch in the desired position.
9. Momentarily press the start switch.
CAUTION - The funnel contains hot liquids. Remove funnel slowly.
10. Carefully remove the brew funnel and discard the used filter when tea no longer drips from the funnel tip.
11. Place the ON/OFF switch in the "OFF" position to prevent a false start.
12. Fresh tea is available at the faucet.
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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 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. External Strainer/Flow Control
(.750 GPM)
4. ON/OFF Switch
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 towards the brewer.
(B) Remove the strainer/flow control and check for obstructions.
Clear or replace.
Refer to
Service
- ON/OFF Switch
for testing. See page 20
Refer to
Service
- Start Switch for
testing procedures. See page 21
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