IMIX-3
IMIX-4
IMIX-5
INSTALLATION & OPERATING MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
37510.0000D 01/06 ©2004 Bunn-O-Matic Corporation
USER NOTICES
The notices on this dispenser should be kept in good condition. Replace unreadable or damaged labels.
! WARNING
( / 4
Fill water tank before turning - on -
, ) 1 5 ) $
thermostat or connecting appliance
2%,%!3% "544/. 7(%. #50 )3 ꢀꢁꢂ &5,,
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.
0,!#%
#50
(%2%
0,!#%
#50
(%2%
0,!#%
#50
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FAILURE TO COMPLY RISKS EQUIPMENT
DAMAGE, FIRE, OR SHOCK HAZARD
IMIX-3 (Self Serve)
28328.0011
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
H O T
L I Q U I D
00831.0000
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). For models installed
outside the U.S.A., comply with the applicable
Plumbing /SanitationCode.
PLACE
CUP
PLACE
CUP
PLACE
CUP
HERE
HERE
HERE
IMIX-3 (Portion Control)
28328.0013
00656.0000
H O T
L I Q U I D
RELEASE BUTTON WHEN CUP IS 3/4 FULL
PLACE
CUP
HERE
PLACE
CUP
HERE
PLACE
CUP
HERE
PLACE
CUP
HERE
IMIX-4 (Self Serve)
28328.0012
!
WARNING
H O T
L I Q U I D
PLACE
CUP
PLACE
CUP
PLACE
CUP
PLACE
CUP
HERE
HERE
HERE
HERE
IMIX-4 (Portion Control)
28328.0014
IMIX-5 (Self Serve)
28328.0010
37510 010206
3
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.
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.
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. Place the ON/OFF/NIGHT switch in the “ON” position.
4. Connect the dispenser to the power source.
5. 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.
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.
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). For models installed outside the U.S.A.,
you must comply with the applicable Plumbing/Sanitation codes 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.
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.
37510 010206
4
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.
3. When the tank is full of water, open the front door and place the ON/OFF/NIGHT switch in the “ON” (up-
per) position. 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.
4. 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 mes-
sage 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.
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. Select the appropriate button for the cup size under the dispense tip, press momentarily, then release.
3. Let the mixing chamber completely drain before removing cup.
37510 111004
5
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.
HOPPER LEVEL SENSOR CALIBRATION
The dispenser is equipped with sensors to detect a low level in each hopper. When low powder lockout is
enabled, dispensing will be disabled when a low powder condition is detected in a hopper. The LCD screen on
the door will also display a low level condition.
The despenser is shipped from the factory with the low level powder lock disabled. To enable the lock, place
the “NORMAL/PROGRAM/RINSE” switch (page 9) in the “PROGRAM” position. Press button A (page 8) below
the BUNN logo on the front of the door. Continue to press this button until the “LOCKS/DISABLES?” menu is
reached. Press button B (page 8} for “YES”, then press it again in the “LOW POWDER LOCK?” menu. The low
powder lockout is now enabled. Press button C (page 8) to exit the program menus, then return the “NORMAL/
PROGRAM/RINSE” button to the “NORMAL” position. To disable the low powder lockout, repeat the process,
and press button D (page 8) for “NO”, in the “LOW POWDER LOCK” menu.
The low level sensors are factory calibrated for most products. If calibration is required for proper opera-
tion, the sensors can be recalibrated to the current product.
The hopper must be at least half full of product for calibration. Place the “NORMAL/PROGRAM/RINSE”
switch in the “PROGRAM” position. Using button A (page 8), forward until the “CALIBRATION?” menu is
reached. Press button B (page 8) for “YES”, then press button A (page 8) until “CAL HOPPER 1?” screen is
reached. Continue to press button A until the hopper to be calibrated is reached.
To calibrate the hopper, press button B (page 8) to indicate “YES” in the “CAL HOPPER#? screen. The screen
will then ask you if the hopper is full. Press the button again to indicate “YES”. The calibration will then take
a few moments, then the screen will display “POWDER LEVEL RESET COMPLETE”. The next hopper may be
calibrated by moving forward in the menu, or press button C (page 8) to exit.
CLEANING
Refer to the decal inside the hopper access door for cleaning recommendations and procedures.
The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all sur-
faces on Bunn-O-Matic equipment.
DRAINING THE hot water tank
CAUTION - The dispenser must be disconnected from the power source throughout these steps
1. Disconnect the dispenser from the power source.
2. Open front door and place ON/OFF/NIGHT switch in the “OFF” (center) position and let the water in the tank
cool before draining.
3. Shut off and disconnect the incoming water supply.
4. Remove the drip tray and access panels below the door.
5. 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-4/5 and 4.4 gal for iMIX-3).
6. Make certain the shut off clamp is locked tightly on the tube, then remove the snap type clamp and plug from
end of tube.
7. 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.
37510 010206
6
GLOSSARY
Adjust tank temperature
(190° F maximum)
Allows password to be set to pre-
vent altering setup functions
TANK TEMP XXX°
(-) EXIT (+)
SET PASSWORD
(-) XXXX (+)
?
Turns on audio alarm
Adjust minimum tank ready temper-
ature for lockout (185° maximum)
AUDIBLE ALARM
NO EXIT YES
?
READY TEMP XXX°
(-) EXIT (+)
Disables function that displays fault
messages on LCD door display
Select setting cup size by Time (seconds) or
by Example (Portion Control models only)
DISABLE MESSAGES ?
SET CUP SIZE
EXMPL TIME
NO
EXIT
YES
Enables “ADS” to be displayed
on LCD door display
Press same dispense button to top off
cup, or press save to lock in dispense
time, or, press repeat to erase dispense
time and repeat process.
ENABLE ADS
NO EXIT
?
YES
DISPENSE TO ADD
REPEAT SAVE
Enter asset number of machine
ENTER ASSET #
?
EXIT
YES
Enables service agent telephone
number to be displayed
Adjust hopper motor speed
for station selected
ENABLE SERVICE
#
DRINK STRENGTH
(-) XX (+)
NO
EXIT
YES
Enables energy saver mode
Calibrate temperature probe
Set refill probe threshold
ENABL EngergySavr
NO EXIT YES
XX° CAL
(-) Tank Temp (+)
XX°
Allows testing of dispense
switches
235 REFILL 155
TEST SWITCHES
?
(-)
EXIT
(+)
?
Use Switch To Test
Calibrates dilution water flow
rate in station selected
Allows manually activating
tank heater
CAL WATER
PRESS DISPENSE
TEST HEATER
EXIT
?
YES
Calibrates powder dispense rate
for hopper in station selected
Allows manually activating
refill valve
CAL POWDER
PRESS DISPENSE
?
TEST REFILL
EXIT
?
YES
Allows manually activating hot
water valve (optional)
Set delay start of hopper after dilution
valve opens in station selected
Auger Delay
.XX sec
TEST HOT WATER
?
(-)
(+)
EXIT
YES
Calibrates hopper level sensor in station selected
Hopper must be at least half full to calibrate
Allows manually activating
hopper motors
CAL HOPPER
NO
?
YES
TEST AUGERS
DISPENSE TO TEST
?
Allows manually activating dis-
pense valves & whipper motors
Enables lockout of dispensing when low
hopper level is detected
TEST DISP HEADS
DISPENSE TO TEST
LOW POWDER LOCK ?
NO EXIT YES
Displays amount dispensed
Enables lockout of dispensing if below
minimum water temperature
DISPLAY USAGE ?
DISPENSE LOCKOUT
EXIT
YES
NO
EXIT
YES
Resets all functions to factory
defaults, and password to 0
Enables rinse alarm
FACTORY DEFAULTS
NO YES
RINSE ALARM
NO EXIT
?
YES
Disables all functions and dispensing
for station selected
HEAD 1 DISABLE
NO EXIT YES
?
37510 113004
7
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
STOP
Digital Beverage Control
Digital Beverage Control
P3059
E
D
C
B
A
E
D
C
B
A
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 and interrupt dispense
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
PORTION CONTROL MODELS
SELF SERVE MODELS
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 switch-
es, 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.
37510 111004
8
PROGRAMMING THE DISPENSER (cont.)
1. ON/OFF/NIGHT switch:
ON: Enables all dispenser functions.
OFF: Disables all dispenser functions.
NIGHT: Disables display lighting and dispense switches. Tank refill and heating
still functions.
2
1
2. NORMAL/PROGRAM/RINSE switch:
NORMAL: Allows all dispenser functions. Must be in this position for dispensing.
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 (on memory board mounted
on rear of component mounting bracket)
This switch can be set to prevent access to the programming
mode of the dispenser. Once all the correct settings are pro-
grammed, the operator can set the switch to the “ON” position to
prohibit anyone from changing the settings.
PROGRAMMING CUP SIZES - Portion Control Models
P3060
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. Pro-
gramming 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 be-
low (+) 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.
37510 113004
9
PROGRAMMING THE DISPENSER (cont.)
Press and release right switch (advance to next menu), “TANK TEMP XXX°” appears on screen.
TANK TEMP XXX°
(-) EXIT (+)
Adjust tank
temperature
READY TEMP XXX°
(-) EXIT (+)
ENTER ASSET #
?
?
Adjust minimum tank
ready temperature for
lockout
EXIT
YES
ENABLE SERVICE
Portion control
models only
Self Serve models
NO
EXIT
YES
(K)
ENABLE EnergySavr ?
STRENGTH ADJ. ?
continue to J
(page 12)
EXIT
YES
NO
EXIT
YES
continue to B
(page 11)
(A)
DIAGNOSTICS
EXIT
?
YES
ENTER PASSWORD
(-)
XXXX
(+)
continue to H
(page 12)
(I)
(C)
CALIBRATION
EXIT
DISPLAY USAGE ?
EXIT YES
?
YES
continue to D
(page 11)
(E)
FACTORY DEFAULTS
NO YES
LOCKS/DISABLES
EXIT
?
YES
continue to F
(page 12)
(G)
FINISHED, returns
to main screen
AUDIBLE ALARM
NO EXIT
?
YES
DISABLE MESSAGES ?
NO EXIT YES
ENABLE ADS
?
NO EXIT YES
37510 111004
10
PROGRAMMING THE DISPENSER (cont.)
(B)
(D)
SET FLAVOR 1 BY
TASTE
RECIPE
Auger Delay
.XX sec
SELECT UNITS
ENG EXIT METRIC
(-)
(+)
Goes to next station.
Returns to (A) (page
10) after last station.
CAL HOPPER 1 ?
Returns to (E)
(page 10)
NO
YES
Adjust hopper motor
speed for station for
station selected
DRINK STRENGTH
(-) XX (+)
1
CHANGING VALUES
WILL EFFECT RPM
Goes to next station.
Continues after last
station.
ARE YOU SURE
NO EXIT
?
YES
PRESS DISPENSE
TO CHECK TASTE
XX° CAL
(-) Tank Temp (+)
XX°
TASTE 1 OK
NO
?
YES
ENTER RECIPE #
#.# gm/fluid oz
235 REFILL 155
Goes to next station.
Returns to (A) (page
10) after last station.
Goes to next station.
Returns to (A) (page
10) after last station.
(-)
EXIT
(+)
CAL WATER 1 ?
PRESS DISPENSE
ENTER VOLUME 1
(-) XX.X oz
(+)
CAL POWDER 1 ?
PRESS DISPENSE
ENTER WEIGHT 1
(-) XX.X gm
(+)
Goes to next station.
Continues after last
station.
37510 111004
11
PROGRAMMING THE DISPENSER (cont.)
(F)
(H)
(J)
LOW POWDER LOCK ?
TEST SWITCHES
Use Switch To Test
?
SET CUP SIZE
NO
EXIT
YES
EXMPL
TIME
DISPENSE LOCKOUT
DISPENSE UNTIL
CUP IS 3/4 FULL
HEAD 1 SM TIME
(-) 6.40 SEC (+)
TEST HEATER
EXIT
?
YES
NO
EXIT
YES
HEAD 1 MD TIME
(-) 9.60 SEC (+)
Press and release
any dispense button
to set cup size.
RINSE ALARM
NO EXIT
?
YES
TEST REFILL
EXIT
?
YES
HEAD 1 LG TIME
(-) 12.40 SEC (+)
DISPENSE TO ADD
REPEAT SAVE
RINSE ALARM TIME
(-) XX hours (+)
HEAD 1 DISABLE
NO EXIT YES
?
TEST HOT WATER
?
EXIT
YES
Goes to next station.
Continues after last
station.
Goes to next station.
Returns to (K) (page
10) after last station.
Returns to (K) (page
10) after last station.
RINSE LOCKOUT ?
TEST AUGERS
DISPENSE TO TEST
?
NO
EXIT
YES
SET PASSWORD
(-) XXXX (+)
?
TEST DISPENSE HEAD?
DISPENSE TO TEST
Returns to (G)
(page 10)
Returns to (I)
(page 10)
37510 113004
12
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