BUNN
®
JDF-2
INSTALLATION & OPERATING MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
35303.0000 12/03 ©2003 Bunn-O-Matic Corporation
www.bunnomatic.com
CONTENTS
Introduction & Warranty .................................................................................... 2
User Notices ...................................................................................................... 3
Initial Set-Up & Electrical Requirements ............................................................ 4
Plumbing Requirements .................................................................................... 4
Operating Controls............................................................................................. 7
Initial Fill ............................................................................................................ 5
Dispenser Use ................................................................................................... 9
Cleaning........................................................................................................... 10
Adjustments & Optional Settings ..................................................................... 13
Function Lists .................................................................................................. 18
Coolant Diagram .............................................................................................. 20
Schematic Wiring Diagram .............................................................................. 21
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY
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.
BUNN, and JDF-2 are either trademarks or registered trademarks of Bunn-O-Matic Corporation.
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35303 081503
USER NOTICES
Carefully read and follow all notices on the equipment and in this manual. They were written for your protec-
tion. All notices are to be kept in good condition. Replace any unreadable or damaged labels.
! WARNING
DO NOT OVERLOAD CIRCUIT.
ALWAYS ELECTRICALLY GROUND THE CHASSIS
OR ADAPTOR PLUG.
DO NOT DEFORM PLUG OR CORD.
FOLLOW NATIONAL AND LOCAL ELECTRICAL CODES.
KEEP COMBUSTIBLES AWAY.
FAILURE TO COMPLY RISKS EQUIPMENT
DAMAGE, FIRE OR SHOCK HAZARD.
READ THE ENTIRE OPERATING MANUAL
BEFORE USING THIS PRODUCT
00986.0002E 5/98 ©1994 Bunn-O-Matic Corporation
00986.0002
CHARGE
Type R134A, Amount 9 oz
Design Pressures: High 255 Low 36
27442.0000
WARNING
HAZARDOUS
VOLTAGE
DISCONNECT FROM
POWER SOURCE
BEFORE REMOVING!
12559.0003
33461.0001
3
35303 012703
INITIAL SET-UP
CAUTION: The dispenser is very heavy! Use care when lifting or moving it. Use at least two people to lift or move
the dispenser. Place dispenser on a sturdy counter or shelf able to support at least 150 lbs. (68 kg). The JDF-2
is designed for indoor use only.
Set the dispenser on the counter where it will be used. The JDF-2 requires a minimum of 4 inches (102 mm)
of air clearance at the rear and 8 inches (203 mm) of air clearance above the dispenser. Minimal clearance is
required between the dispenser sides and the wall or another appliance. For optimum performance,
do not let warm
air from surrounding machines blow on the JDF-2. Leave some space so the dispenser can be moved for cleaning.
ELECTRICAL REQUIREMENTS
CAUTION: The dispenser must be disconnected from the power source until specified in
Electrical Hook-Up
.
The 120V rated dispensers have an attached cord set and require a 2-wire, grounded, individual branch circuit
rated 120 volts ac, 15 amp, single phase, 60Hz. The mating connector must be a NEMA 5-15R. (Refer to the data
plate for exact electrical requirements.)
The 230V rated dispensers have an attached cord that requires an attachment plug cap rated at least 10a, 230V.
The attachment plug cap must meet with applicable national/local electrical codes.
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
.
PLUMBING REQUIREMENTS
This dispenser must be connected to a COLD WATER system with operating pressure between 20 and 100 psi
(138 and 690 kPa). This water source must be capable of producing a minimum flow rate of 3 fluid ounces (88.7
milliliters) per second. A shut off valve should be installed in the line before the dispenser. Install a regulator in
the line when pressure is greater than 100 psi (690 kPa) to reduce it to 50 psi (345 kPa). The main water inlet is
a 3/8” (9.52 mm) MFL connection.
Additionally, the dispenser’s rinse connection may be connected to a HOT WATER system.
Caution:
MAXIMUM RINSE WATER TEMPERATURE: 170 degrees F (76.6 degrees C)
Use BUNN-O-MATIC tubing, part number 32759.10_ _ (see Illustrated Parts Catalog for complete part number)
for hot water connection.
The rinse water operating pressure must be between 20 and 100 psi (138 and 690 kPa). A shut off valve should
be installed in the line before the dispenser. Install a regulator in the line when pressure is greater than 100 psi (690
kPa) to reduce it to 50 psi (345 kPa). The rinse water inlet is a 1/4" (6.35 mm) MFL connection.
NOTE- At least 18 inches (457 mm) of an FDA approved flexible beverage tubing, such as reinforced braided
polyethylene or silicone, before the dispenser will facilitate movement to clean the countertop. It can be purchased direct from BUNN-O-MATIC (part number 32759.10_ _ [see Illustrated Parts Catalog for complete part
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35303 081503
PLUMBING REQUIREMENTS (cont)
number.]) BUNN-O-MATIC does not recommend the use of saddle valves to install the dispenser. The size and
shape of the hole(s) made in the supply line(s) by saddle valves may restrict water flow.
Note- A water strainer (Bunn-O-Matic part number 23720.1000) should be installed in line, prior to the
flexible water line. This strainer is supplied loose with the dispenser. (See Fig. 2 for proper locations)
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).
INITIAL FILL
CAUTION: The dispenser must be disconnected from the power source throughout the initial fill except when
specified in the instructions.
1. Remove drip tray assembly and splash panel from the dispenser.
2. Pull the overflow tube from its retaining clip and connect it to the main water source (black gasket is supplied
in install kit).
3. Slowly open the water shut off valve and fill the water bath until water trickles from the overflow.
4. Connect dispenser to the power source.
5. After 3 minutes of power, slowly add more water to the tank until water trickles from overflow again.
6. Once water bath is filled, remove water source, cap dispenser fill line, and store the fill tube in it’s holder (the
fill tube can now be used as a sight glass).
7. Replace the splash panel and drip tray.
8. Place refrigeration switch to the “ON” position. It will take approximately three hours at 75° F (24° C) ambient
to create the ice bank required for full dispenser performance. During this time, some further trickling from
the water bath is expected due to expansion caused by ice bank formation. While the refrigeration system is
creating the ice bank, the dispenser may be readied for use as described in
Adjustment.
Plumbing, Loading, Priming
and
FIG 1 Initial Fill Connection
5
P2655
35303 081503
PLUMBING HOOKUP
All plumbing connections are located on the rear of the dispenser. Both the rinse and potable water line must
be connected to a water source. A water hookup kit is included with each dispenser.
FIG 2 Plumbing Connections
P2656
LOADING
Frozen Concentrates
1. Thaw the frozen concentrate in a refrigerated 35-40 degrees F (1.6-4.4 degrees C) environment for 36 to 48
hours before use.
2. Thoroughly mix the thawed concentrate by vigorously shaking the product container.
3. Open the dispenser door.
4. Prior to placing the product container in the dispenser, make sure that the o-ring on the container adapter is
lubricated. This will ease removal of the container when it becomes necessary.
5. Place the product container in the desired position and press it firmly into the bottle adapter opening.
6. Open the vent hole in the product container.
Note: Concentrate in the container must be completely thawed and be within the temperature range of 35-40
degrees F (1.6-4.4 degrees C.) Product outside of this temperature range, especially below, will produce an
“out of brix” drink.
Ambient Concentrates (Optional)
1. Install an Ambient Concentrate Conversion Kit (BUNN-O-MATIC part number 33699.0001) per the instructions
provided in the kit.
2. Attach the concentrate product hose to the appropriate concentrate line located at the rear of the dispenser.
3. Attach the other end of the product hose to the product container through an appropriate fitting.
PRIMING
1. Open the dispenser door
2. Load concentrate per instructions in section titled
3. Close the dispenser door.
4. Place a large container under the appropriate dispense nozzle.
5. Dispensers with Press and Hold Feature:
Press and hold the “Product Dispense Switch” Fig 4, until concentrate dispenses from the dispense nozzle.
Dispensers with Portion Control Feature:
Press and hold the “+/STOP Switch” Fig 5, until concentrate dispenses from the dispense nozzle.
Note: This may take several seconds, depending on the installation and programmed pump speed.
Loading
6
.
35303 012703
OPERATING CONTROLS
FIG 3 Refrigeration Switch
Refrigeration Switch
The refrigeration switch is located on the top of the dispenser near the
left rear corner. This switch controls power to the compressor and the
condenser fan motor.
P2261
Sanitize Switch
The sanitize switch is located behind the drip tray in the lower left corner
of the chassis. The drip tray can be removed to provide easy access to
the switch. The sanitize switch is used to enter and exit the sanitize mode
and to initiate the sanitize automatic cycle. Refer to Weekly Sanitizing in
the Cleaning section for detailed instructions on the use of this switch.
FIG 4 Sanitize Switch
P2657
7
35303 012703
OPERATING CONTROLS (cont.)
B
B
A
A
C
FIG 5 Press and Hold Models
A. Product Dispense Switch
Pressing and holding switch will initiate product flow from the respective nozzle; releasing the switch will stop
the flow.
B. Hidden Switch
These switches are used to access, change and exit the dispenser program mode.
C. Lock Switch
This switch is used to lockout the dispensing capabilities.
B
D
D
B
E
E
C
FIG 6 Portion Control Models
B. Hidden Switch
These switches are used to access, change and exit the dispenser program mode.
C. Lock Switch
This switch is used to lockout the dispensing capabilities.
D. Product Dispense Switch
Momentarily pressing and releasing one of the switches will initiate a timed dispense. Each station has three
different timed dispenses which are preset at the factory. Refer to DISPENSER USE section for preset volumes
and adjustment procedures.
E. Plus/Stop Switch
This switch can be used to “top-off” a beverage. Pressing and holding switch will initiate product flow from
the respective nozzle; releasing the switch will stop the flow. Momentarily pressing this switch during a timed
dispense will stop the flow.
8
35303 012703
DISPENSER USE
Press and Hold Models (Refer to Fig 5)
1. Place a cup on the drip tray beneath the desired dispensing nozzle.
2. Press and hold the “Product Dispense” switch until the beverage reaches the desired level, then release.
Portion Control Models (Refer to Fig 6)
1. Place a cup on the drip tray beneath the desired dispensing nozzle.
2. Momentarily press the appropriate cup size switch to dispense the beverage. The dispenser is factory preset
to produce the approximate beverage sizes as follows:
Small (4.0 seconds): approximately 7 fl.oz. (207 ml)
Medium (6.9 seconds): approximately 12 fl.oz. (355 ml)
Large (9.1 seconds): approximately 16 fl.oz. (473 ml)
The dispense times can be individually programmed by following the procedures described in
MENT - Cup Size Programming
.
ADJUST-
To stop a timed dispense, momentarily press the “+/Stop Switch”.
3. To “top-off” a beverage, press and hold the “+/Stop Switch” until the beverage reaches the desired level, then
release.
9
35303 012703
CLEANING & PREVENTIVE MAINTENANCE
General Cleaning and Sanitizing Procedures
Note: The Bunn Juice Dispenser incorporates a rinse reminder feature which lights
the rinse led on the front panel when it is time to rinse. See dip switch function
list to activate this feature.
Daily: Rinse Procedure
Tools required: 32 oz. (946 ml) minimum empty container
1. Open the refrigerated compartment’s door to access the “DISPENSE/RINSE”
Knobs Fig 7.
2. Select the stations that will be rinsed and then rotate the appropriate Knob(s) to
the rinse position. It is recommended that ALL dispense heads be rinsed daily.
Note: If a station is in service lockout, leave its knob in the Dispense position.
3. Close the refrigerated compartment’s door.
4. Place the empty container under the dispense nozzle to catch the rinse water.
(CAUTION: THE BUNN JUICE DISPENSER CAN BE PLUMBED FOR A HOT WATER RINSE. RINSE WATER CAUGHT
IN THIS STEP SHOULD BE HANDLED WITH EXTREME CARE.)
5. Press and release the appropriate “Product Dispense Switch” Fig 5. This will initiate a timed rinse cycle. Portion
control users can press any of the 3 “Product Dispense Switches” Fig 6, to initiate a timed rinse cycle.
6. Repeat for each dispense head.
7. Open the refrigerated compartment’s door and return each knob to the dispense position.
8. Actuate the station’s Dispense Switch until concentrate appears from the dispense nozzle.
FIG 7 Dispense/Rinse Switch
Daily: Parts Washing
1. Remove and wash the dispense nozzle(s), mixing element(s), drip tray and drip tray cover in a mild detergent
solution. Rinse thoroughly.
2. Wipe splash panel, areas around dispense nozzle(s), and drip trough in refrigerated compartment with a clean,
damp cloth.
Weekly: Sanitizing
Tools required: Nozzle tubing (BUNN-O-MATIC part number 03289.1002) recommended when sanitizing multiple
dispense heads simultaneously, 1 empty 5 gallon (18.9 L) bucket, 1 packet of Kay 5 sanitizer, and clean, empty
concentrate containers.
Note: The Bunn juice dispenser features a semiautomatic sanitizing program. When sanitizing multiple heads
simultaneously, attach Bunn sanitize tubing (BUNN-O-MATIC part number 03289.1002) on the end of each
dispense nozzle and run tubing to the 5 gallon (18.9 L) bucket.
1. Remove any juice concentrate from the dispenser and store in a separate refrigerated compartment.
2. Perform the rinse procedures as previously described. (Note: If the dispenser is plumbed for hot water rinse,
proceed to step 9.)
3. Fill clean empty concentrate container(s) with approximately 32 oz. (946 ml) of the hot tap water (approxi-
mately 140°F (60°C). Load the containers of hot water into the dispenser (just like concentrate). Verify the rinse
knobs are in the “DISPENSE” position.
4. Remove the drip tray and verify that the nozzle tubes are positioned within the empty bucket.
5. Press and hold the “Sanitize Switch” Fig 5, located on the front left portion of the base, for 5 seconds. The
“SANITIZE” indicator on the front panel will begin to flash and the beeper will sound twice indicating that you
have entered the sanitize mode.
10
35303 012703
CLEANING (cont)
6. Select the dispense stations by pressing the “Dispense Switch” for that station. Use the “+/Stop Switch” for
portion contol dispensers. The “REFILL” indicator will light and the beeper will sound for the dispense head
selected.
7. Once the dispense heads have been selected, press and hold the “Sanitize Switch” for 5 seconds again to initiate
the automatic cycle. (When the cycle is initiated the “SANITIZE” indicator lights steadily and the “REFILL”
indicator for each station being sanitized will flash.)
Note: The sanitize routine takes 8 minutes. During the sanitize routine the following steps will occur in sequence:
A) The pumps at the selected dispense heads will run for 1 minute, or until the bottles filled
with hot water empty, whichever occurs first.
B) The dispenser will sit idle for 5 minutes.
C) The pumps at the selected dispense heads will run for 2 minutes or until the bottles filled
with hot water empty, whichever occurs first.
D) The beeper will sound once every 3 seconds to indicate completion of the sanitize
routine.
Note: To terminate a sanitize program mid-cycle, momentarily press and release the “Sanitize Switch” and proceed
to step 17. The sanitize program should be restarted from step 1 to ensure proper sanitization.
8. Once the cycle is completed, disconnect the sanitizing hose(s) from the nozzle(s) and empty the bucket.
9. Remove each dispense nozzle and mixing element and run under hot tap water to remove excess pulp.
10. Prepare 2.5 gal. (9.46 L) of sanitizing solution by dissolving 1 packet of Kay 5 sanitizer into 2.5 gal. (9.46 L)
of 120°F (48.9°C) water to ensure 100 ppm of available chlorine.
11. Place nozzle(s) and mixing element(s) in a separate 1 quart container of sanitizing solution and mix thoroughly.
Allow the part to soak for 2 minutes.
12. Clean the dispense nozzle receptacle(s) (dispense valves) with the sanitizing solution and a soft bristle brush.
13. Clean the concentrate bottle’s inlet adapter(s) using the sanitizing solution and a soft bristle brush.
14. Replace the mixing element(s) and nozzle(s), reattach the sanitizing hose(s) to the nozzle(s), and insert the
hoses into the catch bucket.
15. Fill approximately 96 ounces (2.8 L) of clean sanitizing solution into clean, empty concentrate container(s).
Do not use the sanitizing solution used in step 11. Load the containers into the dispenser.
16. Repeat steps 5 through 8.
Note: The sanitize routine takes 8 minutes. During the sanitize routine the following steps will occur in sequence:
A) The pumps at the selected dispense heads will run for 1 minute, or until the bottles filled
with sanitizing solution empty, whichever occurs first.
B) The dispenser will sit idle for 5 minutes.
C) The pumps at the selected dispense heads will run for 2 minutes or until the bottles filled
with sanitizing solution empty, whichever occurs first.
D) The beeper will sound once every 3 seconds to indicate completion of the sanitize
routine.
17. Replace the sanitizing solution with concentrate and reattach the drip tray.
18. Activate a rinse cycle at each station as described in DAILY RINSE PROCEDURE.
19. At each station, actuate the Dispense Switch until juice appears. Then pour one 12 ounce (354.9 ml) glass of
juice and discard.
20. Wipe internal and external surfaces with a clean, damp cloth.
11
35303 012703
CLEANING (cont)
Monthly: Clean Condenser Air Filter
1. Remove the condenser air filter located on the rear of the dispenser.
2. Using a water spray, clean the air filter.
Annually: Replace Pump Tubing
1. Open dispenser door.
2. Remove all product containers and place them in a refrigerated (35-40 degrees F [1.6-4.4 degrees C])
environment. Disconnect all connections to ambient products from the bottle adapter.
3. Close the dispenser door and dispense product at each station until the product runs clear.
4. Disconnect dispenser from power source.
5. Remove the DISPENSE/RINSE knobs Fig 7, all dispense nozzles, and the dispense platform cover.
6. Shut off the dispenser platform water valve located on the dispense platform. Disconnect the dispense
platform’s water lines from the supply lines inside the refrigerated cabinet and disconnect the wiring
connections from the cabinet receptacles.
7. Release the latch securing the dispense platform to the cabinet .
8. Slowly pull the dispense platform forward to allow access to the rear wiring harness connector.
9. Disconnect the rear wiring harness connector from its receptacle.
10. Pull the dispense platform completely out of the cabinet and place it on a flat work surface.
11. Close the dispenser door.
12. Remove the screw securing the tubing retainer plate to the pump body and set it and the tubing retainer plate
aside.
13. Gently pull the socket head screw from its notch in the pump body, releasing the spring tension on the pump
band.
14. Gently pull the pump tube from around the pump’s rotor.
15. Inspect the pump band for signs of wear. Replace if necessary.
16. Release the clamps securing the old pump tubing to the plastic elbows.
17. Pull the plastic elbows from the old pump tubing, and discard the old pump tubing.
18. Insert the plastic elbows into the new pump tubing and secure it with the clamps.
19. Apply lubricant (BUNN-O-MATIC part number M2548.0000) to the new pump tubing’s rotor side.
20. Gently wrap the new pump tubing around the pump’s rotor, making sure that the elbows and clamps end up
on the top-side of the pump body and don’t protrude through the exit slots.
21. Replace the socket-head screw into its notch in the pump body.
22. Replace the tubing retainer plate and its retaining screw.
23. Repeat steps 12 through 21 for the remaining pumps.
24. Replace the dispense platform into the refrigerated cabinet, making sure to reconnect all electrical and water
connections.
25. Turn the dispense platform water valve to the open position. Check for leaks.
26. Replace the dispense platform cover, DISPENSE/RINSE knobs and dispense nozzles.
27. Turn power on to dispenser.
28. Turn all DISPENSE/RINSE knobs to the RINSE positions. Close the door and run a rinse at each station. Check
for leaks.
29. Replace product shelf and product containers. Reconnect any connections to ambient product containers.
30. Prime the pumps as described in “PRIMING” in the Initial Fill Section.
12
35303 012703
ADJUSTMENT & OPTIONAL SETTINGS
SETTING THE MIX RATIO/BRIX
Ratio Cup Method
1. Adjust the water flow as described in
2. Remove the dispense nozzle from the appropriate dispense position.
3. Assemble, lubricate, and install the Flow Separator Assembly (BUNN-O-MATIC part number 32629.0000) into
the dispense nozzle receptacle (dispense valve,) making sure to point the arrow on the separator body away
from the dispenser.
4. Place an empty container under the Flow Separator Assembly.
5. Dispensers with Press and Hold Feature:
Press and hold the “Product Dispense Switch” Fig 5, until water and concentrate begin flowing freely from
the Flow Separator Assembly nozzles.
Dispensers with Portion Control Feature:
Press and hold the “+/Stop Switch” Fig 6, until water and concentrate begin flowing freely from the Flow
Separator Assembly nozzles.
6. Place the empty brixing cup (BUNN-O-MATIC part number 33095.0000) under the Flow Separator Assembly
nozzles, small (concentrate) chamber to the left and large (water) chamber to the right.
7. Dispensers with Press and Hold Feature:
Press and hold the “Product Dispense Switch” until concentrate reaches the 1 oz. (black line) mark.
Dispensers with Portion Control Feature:
Press and hold the “+/Stop Switch” until concentrate reaches the 1 oz. (black line) mark.
8. Read the level in the water chamber. This reading directly determines the mix ratio (i.e. If the water level reads
4.0 oz., then the mix ratio is 4 [water] + 1 [concentrate].)
9. Adjust the pump speed (down to increase the ratio, up to decrease the ratio) to achieve the correct mix ratio
as described in
Pump Speed Programming.
10. Remove the Flow Separator Assembly and replace the dispense nozzle assembly into the dispense nozzle
receptacle (dispense valve.)
Water Flow Testing and Adjustment.
Temperature Compensated Refractometer Method
1. Adjust the water flow as described in
Water Flow Testing and Adjustment.
2. Place an empty container under the appropriate dispense nozzle.
3. Dispensers with Press and Hold Feature:
Press and hold the “Product Dispense Switch” Fig 5, until water and concentrate begin flowing freely from
the dispense nozzle.
Dispensers with Portion Control Feature:
Press and hold the “+/Stop Switch” Fig 6, until water and concentrate begin flowing freely from the dispense
nozzle.
4. Discard the product caught previously and place the empty container back under the dispense nozzle.
5. Dispensers with Press and Hold Feature:
Press and hold the “Product Dispense Switch” until the cup is filled.
Dispensers with Portion Control Feature:
Press and hold the “+/Stop Switch” until the cup is filled.
6. Stir the contents of the cup, and use the refractometer (according to the manufacturer’s instructions) to check
the brix %.
7. Adjust the pump speed (down to decrease the brix %; up to increase the brix %) to achieve the correct brix
% as described in
Pump Speed Programming.
13
35303 012703
ADJUSTMENT & OPTIONAL SETTINGS (cont)
Water Flow Testing and Adjustment
1. Enter the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches” Fig 5 or Fig 6. Note that the beeper sounds
twice and that the “PROGRAM” indicator begins flashing.
2. Place a graduated measuring cup or the large chamber of the empty
brixing cup (BUNN-O-MATIC part number 33095.0000) under the
appropriate dispense nozzle.
3. Press and hold the desired “Product Dispense Switch” Fig 5 (“+/Stop
Switch” Fig 6, for portion control dispensers) for 5 seconds. Note that
FIG 8 Adjusting Water Flow
P2253.70
the beeper sounds once per second (6 times, total) during this period.
4. At the end of the 5 second period, the selected position will dispense water (no concentrate) for only 3 seconds.
5. Measure the water dispensed.
6. Adjust the water flow rate Fig 8, (clockwise to increase flow rate; counterclockwise to decrease flow rate) to
the corresponding product mix ratio as follows:
Mix Ratio Adjust water flow rate to: Product Brix %
(water + concentrate)
2+1 3.75 fluid ounces (111 ml) Prune Juice 16.0%
per 3-second test Other *
Orange Juice 11.8%
4+1 Pineapple Juice 12.8%
Cranberry Fruit Cocktail 14.0%
4.5 fluid ounces (133 ml) Grapefruit Juice 10.6%
per 3-second test Lemonade
5+1 Apple Juice 12.0%
Fruit Punch
Grape Juice 13.0%
3+1 through 7+1 Other *
Above 7+1 6.0 fluid ounces (177 ml) Other *
per 3-second test
Note: Information for specific products listed in this table is to be used for reference only. Consult the
product label for exact mix ratio and/or brix %. See product label for target brix %.
7. Repeat steps 3 through 6 as necessary until the correct water flow rate is achieved.
8. Repeat steps 3 through 7 for the remaining dispense positions.
9. Exit the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches”. Note that the
beeper sounds twice and the “PROGRAM” indicator extinguishes.
Pump Speed Programming
1. Enter the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches”. Note that
the beeper sounds twice and that the “PROGRAM” indicator begins flashing.
2. To increase the pump speed, press and hold the right-hand “Hidden Switch” (filled circle) and then
momentarily press the “Product Dispense Switch” Fig 5 (“+/STOP Switch” Fig 6, for portion control
dispensers). Each time the “Product Dispense Switch “(+/STOP Switch”) is pressed, the motor speed is
increased by one step (5 revolutions per minute [RPM].) Note that each step is confirmed by a single flash of
the appropriate “REFILL” indicator and a single tone from the beeper.
3. To decrease the pump speed, press and hold the left-hand “Hidden Switch” (half-filled circle) and then
momentarily press the “Product Dispense Switch (“+/STOP Switch” for portion control dispensers). Each time
14
35303 012703
ADJUSTMENT & OPTIONAL SETTINGS (cont)
the “Product Dispense” (“+/STOP”) Switch is pressed, the motor speed is decreased by one step (5 RPM.) Note
that each step is confirmed by a single flash of the appropriate “REFILL” indicator and a single tone from the
beeper.
4. Repeat as necessary at the remaining dispense stations.
5. Exit the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches”. Note that the
beeper sounds twice and that the “PROGRAM” indicator extinguishes.
Cup Size Programming (Portion Control Dispensers Only)
1. Enter the “Cup Size Programming” mode by simultaneously pressing the “LARGE” and “SMALL” cup size
switches at any dispense station. Note that the beeper sounds twice and that the “PROGRAM” indicator lights
steadily.
2. Press and hold the desired cup size switch at the appropriate dispense position until the correct cup volume
is achieved. Top up as necessary by momentarily pressing the same cup size switch. Note that if DIP switch
#2 on the control board is set to the “on” position, concentrate must be present in order to dispense or program
cup sizes.
3. Repeat as necessary for the remaining cup sizes and dispense stations.
4. Exit the “Cup Size Programming” mode by pressing any of the “+/STOP Switches”. Note that the beeper sounds
twice and that the “PROGRAM” indicator extinguishes.
Dispenser Lockout
Dispense and Rinse functions of the dispenser can be electronically locked-out to prevent unauthorized use of the
dispenser, while keeping the refrigeration system running.
1. Enter the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches”. Note that
the beeper sounds twice and that the “PROGRAM” indicator begins flashing.
2. Enter a “Lockout” password as follows:
a) Press and hold the left hand “Hidden Switch”.
b) In a 5 second period, press and release the “Lock Switch” the number of times that you want
the password set to (maximum of 10.) For example: If you want the password set to 3, press and release the
“Lock Switch” 3 times in the 5 second period.
c) Release the “Hidden Switch”.
d) At the end of the 5 second period, the password will be confirmed by the “REFILL” indicators flashing the
password.
3. Exit the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches”. Note that the
beeper sounds twice and that the “PROGRAM” indicator extinguishes.
4. To lockout the dispenser, proceed as follows:
a) Press and hold either “Hidden Switch”.
b) In a 5 second period, press and release the “Lock Switch” the “password” number of times. For example:
If the password is set to 3, press and release the “Lock Switch” 3 times in the 5 second period.
c) Release the “Hidden Switch”.
d) At the end of the 5 second period, the dispenser will extinguish the merchandising lamp, and all dispense
functions will be disabled.
5. To enable the dispenser, proceed as follows:
a) Press and hold either “Hidden Switch”.
b) In a 5 second period, press and release the “Lock Switch” the “password” number of times. For example:
If the password is set to 3, press and release the “Lock Switch” 3 times in the 5 second period.
c) Release the “Hidden Switch”.
d) At the end of the 5 second period, the dispenser will light the merchandising lamp, and dispense functions
will be enabled.
15
35303 012703
ADJUSTMENT & OPTIONAL SETTINGS (cont)
6. If the password is forgotten, it can be reset to “0” (dispenser lockout disabled) as follows:
Note: The following procedure also clears the programming and service lockout password.
a) Disconnect the dispenser from its power source.
b) Place the “Refrigeration Switch” Fig 3, in the OFF (rearward) position.
c) While pressing and holding the “Lock Switch”, connect the dispenser to its power source.
d) Continue to hold the “Lock Switch” until the dispenser beeps three times, then release.
e) The passwords are now returned to “0” (no programming or service lockout password/dispenser lockout
disabled.)
f) After 3 minutes, place the “Refrigeration Switch” in the ON (forward) position.
Service Lockout
Should a dispense station become inoperative and require service, the station’s dispense and rinse functions can
be independently locked out, while keeping the remaining stations running.
1. To place a single dispense station in “Service Lockout,” open the dispenser door, press and hold either “Hidden
Switch” and the desired dispense station “Product Dispense” (“+/Stop”) switch for 10 seconds.
2. At the end of the 10 second period, the beeper will sound a double tone and the dispense position will be
disabled. Place the DISPENSE/RINSE Knob to “DISPINSE” and close the dispenser door.
3. To remove a dispense station from “Service Lockout,” press and hold either “Hidden Switch” and the desired
dispense station “Product Dispense” (“+/Stop”) switch for 10 seconds.
4. At the end of the 10 second period, the beeper will sound a double tone and the dispense position will be
enabled. Close the dispenser door.
Password Protection
The programming modes and service lockout function may be password protected to prevent accidental or
unauthorized access to these features. The dispenser is shipped from the factory with a password of “0” (no
password.)
1. Enter the “Pump Speed Programming” mode by simultaneously pressing both “Hidden switches”. Note that
the beeper sounds twice and that the “PROGRAM” indicator begins flashing.
2. Program a password as follows:
a) Press and hold either “Hidden Switch”.
b) In a 5 second period, press and release the “Sanitize Switch” the number of times that you want the
password set to (maximum of 10.) For example: If you want the password set to 3, press and release the
“Sanitize Switch” 3 times in the 5 second period.
Note: To reset password to “0” (no password) press and hold the “Sanitize Switch”, without either “Hidden Switch”
pressed, for the 5 second period. When the password resets to “0”, the beeper will sound and the “Water” indicators
will illuminate for approximately 2 seconds.
c) Release the “Hidden Switch”.
d) At the end of the 5 second period, the password will be confirmed by the “WATER” indicators flashing the
password.
e) From this point forward, the password must be entered before access is allowed to programming modes
or the service lockout function.
16
35303 012703
ADJUSTMENT & OPTIONAL SETTINGS (cont)
3. To enter the password, proceed as follows:
a) Press and hold either “Hidden Switch”.
b) In a 5 second period, press and release the “Sanitize Switch” the password number of times. For
example: If the password is set to 3, press and release the “Sanitize Switch” 3 times in the 5 second period.
c) Release the “Hidden Switch”.
d) Wait for the password to be confirmed by the flashing of the “Water” indicators.
e) Enter the desired program mode or select service lockout as normal within the next 5 seconds.
Note: If the program mode/service lockout is not selected within 5 seconds, it will be necessary to re-enter the
password.
4. If the password is forgotten, it can be reset to “0” (no password) as follows:
Note: The following procedure also clears the dispenser lockout password.
f) Disconnect the dispenser from its power source.
g) Place the “Refrigeration Switch” in the OFF (rearward) position.
h) While pressing and holding the “Lock Switch”, connect the dispenser to its power source.
i) Continue to hold the “Lock Switch” until the dispenser beeps three times, then release.
j) The passwords are now returned to “0” (no programming or service lockout password/dispenser lockout
disabled.)
k) After 3 minutes, place the “Refrigeration Switch” in the ON (forward) position).
17
35303 012703
Dispense Fault List
“REFILL” indicator Beeper Fault
2 flashes 2 beeps Dispense station locked out.
3 flashes 3 beeps DISPENSE/RINSE sensing fault.
4 flashes 4 beeps DISPENSE/RINSE knob mis-positioned.
5 flashes 5 beeps Pump motor stalled/speed sensor inoperative.
All “REFILL” 3 beeps Dispenser locked out.
indicators flash
3 times
Cooling Fault List
Fault Code “COOLING” DBC display Fault Fault
indicator (optional) Priority
88 flashes every fault 8 Bath water level low. 1
5 seconds (Also lights all “WATER” indicators)
77 flashes every fault 7 Bath temperature probe short circuit. 2
5 seconds
66 flashes every fault 6 Bath temperature probe open circuit. 3
5 seconds
55 flashes every fault 5 Cabinet temperature probe short circuit. 4
5 seconds
44 flashes every fault 4 Cabinet temperature probe open circuit. 5
5 seconds
33 flashes every fault 3 Cooling system failure 6
5 seconds (disables all dispense functions)
0 On steady Bath/cabinet Bath and cabinet temperatures excessive. 7
temperatures
22 flashes every Bath/cabinet Bath temperature excessive. 8
5 seconds temperatures
11 flash every Bath/cabinet Cabinet temperature excessive. (Disables all 9
5 seconds temperatures dispense functions, flashes, all REFILL and
WATER indicators, and sounds the beeper
when temperature is excessive for more than
6 hours.)
18
35303 012703
Dip Switch Function List
Dip Switch Controls Off On
1 “REFILL” indicator when “concentrate out” is detected. Inactive Active
2 Lockout dispense components when “concentrate out” is detected. Inactive Active (Note)
3 Number of positions that can dispense/rinse simultaneously. 3 2
4 Rinse timer Off On
5 Audio feedback during dispenses. On Off
6 Future use. None None
Note: When dip switch 2 is in the “on” position, the “REFILL” indicator is active, regardless of dip switch 1
position.
19
35303 012703
CONDENSER
SUCTION
ACCUMULATOR
COMPRESSOR
EVAPORATOR
PROCESS TUBE
33464.0000A 09/00 ©2000 Bunn-O-Matic Corporation
FILTER
DRYER
COOLANT SCHEMATIC DIAGRAM
20
35303 012703
SCHEMATIC WIRING DIAGRAM
BLK
BLU/BLK
GRY
1
BLK
t°
CABINET
THERMISTOR
COMPRESSOR ASSEMBLY
LIMIT
THERMOSTAT
GRN
WHI/BLK
BLK
COMP.
PUMP
#2
WHI/ORN
GRY
GRY
RED
RED
11
RED
RED
BLK
GRN
BLK
SPEED
SPEED
SENSOR #1
SENSOR #2
GRN/YEL
1
WHI
BLK
P
R
O
B
E
t°
WATER BATH
THERMISTOR
WHI/VIO
GRN
GRY
1
WHI
WHI WHI/GRN
K1
BRN/BLKBLU/BLK
CONDENSOR FAN
BLU/BLK
MOTOR
K2
K2
PUMP
#1
GRY
PNK
RED
RED
RED
VIO
1
RED
BLK
BEEPER
FAN
WHI/RED
PNK
6
GRY
WHI
PNK
WHI
WHI/RED
GRN
112
VIO
ORN
K1
WHI
GRN
1
VIO
VIO
BLU
WHI/VIO
ORN
ORN
YEL
WHI/ORN
WHI/ORN
WHI/ORN
WHI/VIO
WHI/VIO
RED
RED
GRY
GRY
8
SANITIZE
SWITCH
VIO
1
RED
BLK
WHIBLK
RECIR.
PUMP
WHI
VIO
ORN
GRY
WHI/VIO
WHI/VIO
VIO
ORN
WHI/ORN
WHI/ORN
RED
RED
BLK
BLK
GRY
GRN
WHI/VIO
WHI/ORN
SCHEMATIC WIRING DIAGRAM JDF-2
OPTIONAL
BLK
FLUORESCENT
LAMP
BALLAST
WHI WHI
WHI
BLK
GRY
RED/BLK
RED/BLK
BRN/BLK
WHI/GRN
J6-1
WHI/ORN
J6-6
VIO
RED/BLK
GRY
GRY
GRY
WHI/VIO
J6-12
RED
J3-1
WHI/RED
J3-2
J1-1
WHI/ORN
J1-5
WHI/ORN
GRY
RED
J1-10
PNK
WHT/VIO
VIO
WHI/VIO
J1-18
RED/BLK RED/BLK
ON/OFF
BLK
BLK
101
WHI WHI/GRY
WHI
WHI/VIO
ORN
WHI/ORN
J5-1
J5-5
J4-1
GRY
GRY
GRN
J4-5
WHI
WHI/BLK
RINSE
BLK
WHI
SOL
TRANSFORMER
VIO
J5-10
C
O
N
T
R
O
L
P
C
B
O
A
R
D
J4-10
PNK
WHI/GRY
WHI/GRN
BLK BLK
BLU
WHI/BLU
BRN/BLK
J5-15
J4-14
VIO
ORN
4
WHI
GRNGRN
1
WHI/RED
GRN
LAMP ASSY.
GRY
–
RECT
+
RED/BLK
RED/BLK
WHI
BLK
J5-19
VIO
J9-1
ORN
J9-6
J8-1
J8-8
RED/BLK
J7-1
GRN/WHI
BLU/WHI
BLK/WHI
J7-5
ORN
WHI
RED
RED/WHI
BLK
J7-10
BLU/BLK
GRN/BLK
BLU
ORN/BLK
WHI/BLK
GRN
J7-16
SWITCH UNIT ASSEMBLY
(Push Button Control models)
NL1
WHI
WHI
WHI/BLK
RED
GRN
ORN
ORN/BLK
To Switch Unit Assembly
GRN/BLK
RED/BLK
BLU
1 16
SHIELD
BLU/BLK
BLK
RED/WHI
GRN/WHI
BLK/WHI
BLU/WHI
#1 REFILL
SENSOR
#1 RINSE &
DISPENSE LIMIT
DISPENSE
11
GRN
RINSE
BLK
RED
#1 DISPENSE
WHI/VIO
SOL
120 VOLTS AC
2 WIRE
SINGLE PHASE
#2 REFILL
SENSOR
#2 RINSE &
DISPENSE LIMIT
RINSE
DISPENSE
BLK
RED
GRN
RED/BLK
WHI/ORN
#2 DISPENSE
RED/BLK
SOL
35277.0000B 12/03 © 2003 BUNN-O-MATIC CORPORATION
21
REFILL 1
WATER 1
1 SMALL
1 LARGE
1 MEDIUM
LOCKSWITCH
1 STOP/+
REFILL 2
2 SMALL
WATER 2
DISPENSE 1
REFILL 1
WATER 1
SWITCH UNIT ASSEMBLY
(Portion Control Models)
2 LARGE
2 MEDIUM
PROGRAM
2 STOP/+
LOCKSWITCH
REFILL 2
COOLING
RINSE
SANITIZE
WATER 2
PROGRAM
DISPENSE 2
COOLING
RINSE
SANITIZE
116
SHEILD
35303 121203
SCHEMATIC WIRING DIAGRAM
GRN
COMPRESSOR ASSEMBLY
LIMIT
THERMOSTAT
PUMP
P
R
O
B
E
COMP.
#2
PUMP
BEEPER
BLU/BLK
K2
#1
RED
RED
CONDENSOR FAN
MOTOR
K2
GRY
PNK
RED
FAN
WHI/RED
WHI
WHI/RED
TRANSFORMER
WHI/GRN
VIO
J5-10
C
O
N
T
R
O
L
P
C
B
O
A
R
D
J4-10
WHI/GRY
BRN/BLK
ORN
BLU
WHI/BLU
J5-15
J4-14
VIO
GRNGRN
WHI/RED
WHI
J7-16
J9-1
J7-10
LAMP ASSY.
GRY
–
RECT
+
RED/BLK
RED/BLK
BLK
J5-19
VIO
ORN
J9-6
J8-1
J8-8
RED/BLK
J7-1
GRN/WHI
BLU/WHI
BLK/WHI
J7-5
ORN
WHI
RED
RED/WHI
BLK
BLU/BLK
GRN/BLK
BLU
ORN/BLK
WHI/BLK
GRN
WHI
BLK
BRN/BLKBLU/BLK
1
VIO
WHI/VIO
ORN
WHI/ORN
WHI/ORN
WHI/VIO
RED
GRY
8
SANITIZE
SWITCH
VIO
RED
BLK
WHIBLK
RECIR.
PUMP
WHI
WHI WHI
BLK
WHI
GRY
RED/BLK
BRN/BLK
WHI/ORN
RED/BLK
WHI/VIO
WHI/RED
WHI/ORN
WHT/VIO
WHI/VIO
BLK
GRY
GRY
GRY
RED
GRY
RED
PNK
VIO
RED/BLK
VIO
WHI/GRN
J6-1
J6-6
J6-12
J3-2
J1-10
J1-18
BLK
BLK
WHI
RINSE
SOL
WHI/VIO
ORN
WHI/ORN
J5-1
J5-5
J3-1
J1-1
J1-5
J4-5
J4-1
WHI
PNK
GRY
GRY
GRN
WHI/BLK
#1 RINSE &
DISPENSE LIMIT
#1 DISPENSE
WHI/VIO
DISPENSE LIMIT
SOL
#2 RINSE &
RED/BLK
t°
WHI/ORN
#2 DISPENSE
SOL
RED/BLK
VIO
ORN
GRY
WHI/VIO
WHI/VIO
VIO
ORN
WHI/ORN
WHI/ORN
112
VIO
ORN
RED
RED
BLK
BLK
GRY
GRN
WHI/VIO
RED/BLK RED/BLK
WHI/ORN
22
35303 121203
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