To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts
Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at
www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and
manual updates. For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.
Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
1) All equipment other than as specified below: 2 years parts and 1 year labor.
2) Electronic circuit and/or control boards: parts and labor for 3 years.
3) Compressors on refrigeration equipment: 5 years parts and 1 year labor.
4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis:
parts and labor for 3 years or 30,000 pounds of coffee, whichever comes first.
These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by
it will be commercially free of defects in material and workmanship existing at the time of manufacture and
appearing within the applicable warranty period. This warranty does not apply to any equipment, component or
part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect,
alteration, improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is
conditioned on the Buyer 1) giving 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; 2) if requested by
BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior
authorization from BUNN that the defective equipment is under warranty.
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.
If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its
exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts
and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective
components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall 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, AT BUNN’S
SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, 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.
392, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress, BUNN
Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with the stylized red line, BUNNlink, Bunn-OMatic,
Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, Cool Froth, DBC, Dr. Brew stylized Dr. design,
Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet Juice, High Intensity, iMIX, Infusion Series,
Intellisteam, My Café, PowerLogic, Quality Beverage Equipment Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com, Scale-Pro, Silver Series, Single, Smart Funnel, Smart
Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality in Beverage Equipment Worldwide, ThermoFresh, Titan,
A Partner You Can Count On, Air Brew, Air Infusion, Beverage Bar Creator, Beverage Profit Calculator, Brew better, not
bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Digital Brewer Control, Nothing Brews Like a BUNN,
Pouring Profits, Signature Series, Tea At Its Best, Phase Brew, The Horizontal Red Line, trifecta, Ultra, Velocity Brew are
either trademarks or registered trademarks of Bunn-O-Matic Corporation.
2
38987 050511
USER NOTICES
The notices on this dispenser should be kept in good condition. Replace unreadable or damaged labels.
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.
As directed in the International Plumbing Code of the
International Code Council and the Food Code
Manual of the Food and Drug Administration (FDA),
this equipment must be installed with adequate
backflow prevention to comply with federal, state
and local codes. For models installed outside the
U.S.A., you must comply with the applicable Plumbing /Sanitation Code for your area.
00656.0001
37881.0000
PLACE
CUP
HERE
PLACE
CUP
HERE
IMIX-3S+/IMIX-3S+A
28328.0011
PLACE
CUP
HERE
IMIX-5S+/IMIX-5S+A
28328.0010
00824.0002
3
38987 051311
INITIAL SET-UP
1. Apply the four non-skid pads from the parts box to the bottom of the legs.
2. Remove the drip tray assembly, drip tray bracket, and splash panel assembly from the parts box.
3. Place a set of key holes in the drip tray bracket over the lower two screws in the panel below the hopper
access door; push down gently and tighten screws.
4. Place the set of key holes in the splash panel over the upper two screws and position so the screws are
between the holes.
CE REQUIREMENTS
• This appliance must be installed in locations where it can be overseen by trained personnel.
• For proper operation, this appliance must be installed where the temperature is between 5°C to 35°C.
• Appliance shall not be tilted more than 10° for safe operation.
• An electrician must provide electrical service as specified in conformance with all local and national codes.
• This appliance must not be cleaned by water jet.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given instructions concerning use of
this appliance by a person responsible for its safety.
• Children should be supervised to ensure they do not play with the appliance.
• If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service personnel with
a special cord available from the manufacturer or its authorized service personnel in order to avoid a hazard.
• Machine must not be immersed for cleaning.
ELECTRICAL REQUIREMENTS
CAUTION - The dispenser must be disconnected from the power source until specified in Electrical Hook-Up.
The 120 volt version of this dispenser has an attached cordset. The mating connector must be a NEMA 5-15R.
To access terminal block for high voltage models without a cordset, remove left side panel.
Requirements for brewers without an attached cord set are as follows:
Refer to Data Plate on the Dispenser, and local/national electrical codes to determine circuit requirements.
BLK
L1
WHI
L2
GREENGREEN
230V AC
single phase models
230V. A.C.
GRN/YELGRN
Note: This electrical service
consists of 2 current carrying conductors (L1 and L2)
and a separate conductor
for earth ground.
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. Connect the dispenser to the power source.
4. If plumbing is to be hooked up later be sure the dispenser is disconnected from the power source. If
plumbing has been hooked up, the dispenser is ready for Initial Fill & Heat.
4
38987 051311
PLUMBING REQUIREMENTS
This dispenser must be connected to a cold water system with operating pressure between 20 and 90 psi from a
1⁄2” or larger supply line. A shut-off valve should be installed in the line before the dispenser. Install a regulator
in the line when pressure is greater than 90 psi to reduce it to 50 psi. 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. At least 18 inches of an FDA approved flexible beverage tubing,
such as reinforced braided polyethylene or silicone, before the dispenser will facilitate movement to clean the
countertop. Bunn-O-Matic does not recommend the use of a saddle valve to install the dispenser. The size and
shape of the hole made in the supply line by this type of device may restrict water flow.
As directed in the International Plumbing Code of the International Code Council and the Food Code
Manual of the Food and Drug Administration (FDA), this equipment must be installed with adequate
backflow prevention to comply with federal, state and local codes. For models installed outside the
U.S.A., you must comply with the applicable Plumbing /Sanitation Code for your area.
NOTE - If a backflow preventer is required by code, a shock arrestor should be installed between backflow pre-
venter and dispenser. Installing the shock arrestor as close to the dispenser as possible will provide the best
results.
NOTE - Water pipe connections and fixtures directly connected to a potable water supply shall be sized, installed
and maintained in accordance with federal, state and local codes.
PLUMBING HOOK-UP
1. Flush the water line and securely attach it to the elbow fitting on the bottom of the dispenser.
2. Turn on the water supply.
INITIAL FILL & HEAT
1. Turn on the water supply and connect the dispenser to the power source.
2. Water will automatically flow into the tank to the proper level and then shut-off. This will take less than ten
minutes. A tank full of cold water will take approximately eighty minutes for the water to heat on 120 volt
versions, and forty minutes on 120/240 volt versions.
3. Fill the hopper(s) with the dry product to be dispensed.
LIQUID LEVEL CONTROL
The system automatically maintains the hot water tank’s level by energizing the refill solenoid when the water
level drops below the liquid level probe. If the system has not successfully refilled in 10 minutes, a refill error
occurs. When a refill error occurs, the refill solenoid is de-energized. Once the cause of the refill error has been
investigated and cured, the system can be reset by either disconnecting (for at least 5 seconds) and then reconnecting the power to the machine, or by entering one of the program modes (see Programming Modes.)
RINSE TIMER
The dispenser is shipped from the factory with the rinse timer disabled. To enable the rinse timer, refer to Programming the Dispenser and select yes in the “Rinse Alarm ?” screen; set timer to the desired time and exit the
programming mode.
When enabled, the rinse timer automatically keeps track of the time since the dispenser was last run through a
rinse sequence. If the dispenser detects that a rinse sequence has not been run for the desired time, a message
will appear on the LCD display. If the Lockout is set, after an additional 4 hours, a rinse cycle has still not been
run, the LCD display will display a message, and the hopper drives will be disabled until a rinse sequence has
been run.
5
38987 051311
RUNNING A RINSE SEQUENCE
1. Place the Normal/Program/Rinse switch (page 9) in the “rinse” position.
2. Sequentially at each position, press all of the dispense switches. The dispenser will run for 10 seconds with the
hopper(s) disabled.
3. As each position is rinsed, the LCD display will show which position is being rinsed and count down from 10 seconds.
4. After all positions have been rinsed, return the Normal/Program/Rinse switch to the “Normal” position.
DISPENSER USE - Self Serve
1. Simply place a cup on the drip tray beneath the desired dispensing tip.
2. Press the button to froth and dispense the beverage.
3. Release the button when the cup is approximately 3/4 full and allow the mixing chamber to drain.
Note - The mixing chamber must drain at the end of each dispense.
DISPENSER USE - Portion Control
1. Simply place a cup on the drip tray beneath the desired dispensing tip.
2. Press the dispense button momentarily, then release.
3. Let the mixing chamber completely drain before removing cup.
HOPPER DISPENSE RATE OF PRODUCT
The hopper dispense rates are preset at the factory. With 22 tooth gear and auger wire, the preset dispense rate is
approximately 3 to 5 grams per second. With 30 tooth gear and auger wire, the preset dispense rate is approximately 5
to 7 grams per second. The hopper dispense rates can be individually programmed to a range of dispense rates from
approximately 1.5 to 12 grams per second, by following the procedures described in Programming Modes.
DRAINING THE HOTWATER TANK
CAUTION - The dispenser must be disconnected from the power source throughout these steps
1. Disconnect the dispenser from the power source.
2. Shut off and disconnect the incoming water supply.
3. Remove the drip tray and access panels below the door.
4. Pull the clamped end of the silicone tube out of the dispenser and direct it into a drain or a container large enough to
hold the volume of water in the tank (7.3 gal for IMIX-5 and 4.4 gal for IMIX-3).
5. Make certain the shut off clamp is locked tightly on the tube, then remove the snap type clamp and plug from end of
tube.
6. Carefully release the shut off clamp to let the water drain from the tank.
NOTE - The dispenser must be refilled using the INITIAL FILL & HEAT steps before reconnecting to the power
source.
PREVENTIVE MAINTENANCE
Bunn-O-Matic® Corporation recommends that preventive maintenance be performed at regular intervals. Maintenance
should be performed by a qualified service technician. For Technical Service, contact Bunn-O-Matic® Corporation at
1-800-286-6070.
NOTE: Replacement parts or service caused by failure to perform required maintenance is not covered by warranty.
Cycle
(months)
Item Part Number
6
Mixing Chamber Kit 32906.0001
3 or as
needed
Whipper Shaft Seal Kit 26356.1000
6
38987 012210
CLEANING
The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment. Do NOT clean this equipment with a water jet device.
1 x 24h
1. Rinse out Whipper Chambers by placing RINSE/RUN
switch in the "RINSE" position and activating DISPENSE
switches.
2. Turn elbow up, remove Hoppers, refill with product and
replace hoppers into dispenser
3. Empty Drip Tray and wash in a solution of dish detergent.
1 x 7d
7
.
9
6
8
7
5
1. Para limpiar las camaras de mezcla, coloque el interruptor en la
posicón ENJUAGUE/MARCHA (”RINSE/RUN”) y pulse el boton
para espumar y distribuir la bebida (”DISPENSE”).
2. Gire el codo hacia arriba, remueva las tolvas, llene las tolvas con
producto y coloque las tolvas nuevamente en la maquina.
3. Vacie la bandeja de goteo y limpiela con un detergente liquido
suave no abrasivo.
1
2
3
4
a. Wash
b. Rinse
c. Sanitize
d. Dry
a. Lave
b. Enjuague
c. Desinfecte
d. Seque
Replace Light Bulbs
as required.
Cambie los bombillos
quemados cuando
sea necesario.
a
b
c
NOTICE
The cleaning instructions noted above are for non-dairy sugar based food products. When dispensing any other food product,
the cleaning cycle for the whipping chamber assembly and ejector elbow must be performed daily.
NOTA:
Las instrucciones de limpieza descritas anteriormente excluyen productos lacteos azucarados. La limpieza de las camaras
de mezcla y de los codos de salida de cada tolva deberá realizarse diariamente.
Resets all functions to factory
defaults, and password to 0
RINSE ALARM ?
NO EXIT YES
HEAD 1 DISABLE ?
NO EXIT YES
Enables rinse alarm
Disables all functions and dispensing
for station selected
8
38987 032306
DigitalBeverageControl
STOP
PROGRAMMING THE DISPENSER
The following function screens are in order of appearance. Each screen will have instructions on how to
access, and the procedures to program the various functions of the dispenser. To enable programming, place
the “NORMAL/PROGRAM/RINSE” switch in the “PROGRAM” position.
IMPORTANT PROGRAMMING NOTES - READ CAREFULLY
To exit the programming mode at any time, press and release the exit (center) pad located on the front
switch panel. The display will return to the PROGRAM HOME SCREEN.
If none of the five programming switches are pressed within 90 seconds during the setup of the dispenser,
the programming of the function screen that is being set will be exited and the display will return to the PRO-
GRAM HOME SCREEN.
PROGRAM HOME SCREEN
DISPENSE READY
BUNN IMIX
P3057
The screen above will be shown when the dispenser is ready for use. While the tank is heating, the water
temperature will be displayed until the ready temperature is reached.
PROGRAMMING SWITCHES
DigitalBeverageControl
ABCDE
A. Enter program mode and advance to next menu
B. Incriment display value positive
C. Exit program mode
D. Incriment display value negative
E. Return to previous menu
Using the menu-driven display (MAIN SCREEN) on the front of dispenser, the operator has the ability to alter
or modify various functions of the dispenser. This allows for precise dispensing of various flavors of powdered
products.
Programming of dispenser is achieved by entering a certain function, then, by use of programming switches,
the operator can customize the dispensing process to their specifications.
To access the programming mode, and to scroll through different function screens, the programming
switches shown are used. There are five of switches that will be used for setup of the dispenser.
9
38987 032306
PROGRAMMING THE DISPENSER (cont.)
NORMAL/PROGRAM/RINSE switch:
NORMAL: Allows all dispenser functions. Must be in this position for dis-
pensing.
PROGRAM: Allows access to program menus using touch pad and LCD
screen.
RINSE: Disables hopper motors. Pressing dispense button on front door
will dispense dilution water and power whipper motor for ten seconds.
PROGRAMMING LOCKOUT SWITCH
This switch can be set to prevent access to the
programming mode of the dispenser. Once all the
correct settings are programmed, the operator can
set the switch to the “ON” position to prohibit anyone
from changing the settings.
P3060
P3060
PROGRAMMING CUP SIZES - Portion Control Models
The cup size can be programmed in portion control models by “EXAMPLE” or “TIME”. Programming by EXAMPLE is manually pressing desired dispense button, then releasing when the desired cup size is attained. The
time required to fill the cup will be stored in the controller memory when moving to the next menu. Programming by TIME is setting the actual dispense time in seconds for each cup size desired.
Place the “NORMAL/PROGRAM/RINSE” switch in the “PROGRAM” position. Press button A (page 8) below
the BUNN logo on front of the door until the “SET CUP SIZE” menu is reached. (Refer to menu J, page 12) Press
button D (page 8) to select programming by “EXAMPLE”. Place proper cup under dispense tip for station you
desire to set. Press desired dispense button, then release when the cup is 3/4 full. If cup is not full enough, the
dispense button can be pressed again to add additional beverage to the cup. If cup has reached desired level,
press button B under “SAVE” to record the dispense time. If cup is overfilled, press button D under “REPEAT”.
Empty cup and repeat the process.
If setting cup sizes by “TIME” is desired, press button B under “TIME” in the “SET CUP SIZE” menu. “HEAD
1 SM TIME” will be displayed, along with current time setting. Pressing either button D below (-) or button B
below (+) will subtract or add time in .1 second increments. Each one second of time equals approximately 1.25
ounces of beverage at factory settings. When desired time is set, press button A to continue to next cup size.
When the desired cup sizes have been programmed, press button C to exit program menus, or press button
A to move to the next menu. If button C was selected to exit the program mode, return the “NORMAL/PROGRAM/RINSE” switch to the “NORMAL” position to return to nomal operation.
10
38987 032306
PROGRAMMING THE DISPENSER (cont.)
Press and release right switch (advance to next menu), “TANK TEMP XXX°” appears on screen.
TANK TEMP XXX°
(-) EXIT (+)
READY TEMP XXX°
(-) EXIT (+)
PORTION CONTROL ?
NO EXIT YES
(K)
STRENGTH ADJ. ?
EXIT YES
(A)
ENTER PASSWORD
(-) XXXX (+)
Adjust tank
temperature
Adjust minimum tank
ready temperature for
lockout
continue to J
(page 13)
continue to B
(page 12)
ENTER ASSET # ?
EXIT YES
ENABLE SERVICE ?
NO EXIT YES
DIAGNOSTICS ?
EXIT YES
(I)
FACTORY DEFAULTS
NO YES
continue to H
(page 13)
(C)
CALIBRATION ?
EXIT YES
(E)
LOCKS/DISABLES ?
EXIT YES
ENABLE ADS ?
NO EXIT YES
FINISHED, returns
to main screen
continue to D
(page 12)
continue to F
(page 13)
11
38987 032306
PROGRAMMING THE DISPENSER (cont.)
Adjust hopper
motor speed for
station selected
DRINK STRENGTH 1
(-) XX (+)
NO YES
Goes to next station.
Returns to (A) (page
11) after last station.
(B)
PRESS DISPENSE
TO CHECK TASTE
TASTE 1 OK ?
(D)
SELECT UNITS
ENG EXIT METRIC
XX° CAL XX°
(-) Tank Temp (+)
235 REFILL 155
(-) EXIT (+)
Auger Delay
(-) .XX sec (+)
Returns to (E)
(page 11)
12
38987 032306
PROGRAMMING THE DISPENSER (cont.)
(F)
RINSE ALARM ?
NO EXIT YES
HEAD 1 DISABLE ?
NO EXIT YES
Goes to next station.
Continues after last
station.
SET PASSWORD ?
(-) XXXX (+)
Returns to (G)
(page 11)
RINSE ALARM TIME
(-) XX hours (+)
RINSE LOCKOUT ?
NO EXIT YES
(H)
TEST SWITCHES ?
Use Switch To Test
TEST HEATER ?
EXIT YES
TEST REFILL ?
EXIT YES
TEST HOT WATER ?
EXIT YES
TEST AUGERS ?
DISPENSE TO TEST
SET CUP SIZES BY
EXAMPLE TIME
DISPENSE UNTIL
CUP IS 3/4 FULL
Press and release
any dispense button
to set cup size.
DISPENSE TO ADD
REPEAT SAVE
Returns to (K) (page
11) after last station.
(J)
HEAD 1 SM TIME
(-) 6.40 SEC (+)
Goes to next station.
Returns to (K) (page
11) after last station.
TEST DISPENSE HEAD?
DISPENSE TO TEST
Returns to (I)
(page 11)
13
38987 032306
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