Bunn JDF-4 User Manual

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BUNN

Refrigeration Compressor and Condensor Fan Motor only

D O

R I M

0098

.000

I S

5/9

1994 Bunn-O-M

i c

ration

JDF-4

INSTALLATION & OPERATING MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: (217) 529-6601 FAX: (217) 529-6644

www.bunnomatic.com

CONTENTS

Introduction & Warranty .................................................................................... 2

User Notices ...................................................................................................... 3

Initial Set-Up & Electrical Requirements ............................................................ 4

Plumbing Requirements .................................................................................... 5

Operating Controls............................................................................................. 6

Initial Fill ............................................................................................................ 8

Dispenser Use ................................................................................................. 10

Cleaning........................................................................................................... 11

Adjustments & Optional Settings ..................................................................... 13

Function Lists .................................................................................................. 18

Coolant Diagram .............................................................................................. 19

Schematic Wiring Diagram .............................................................................. 20

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.

33854 052102

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

00986.0002

CHARGE

Type R134A, Amount 10 oz

Design Pressures: High 335 Low 88

33461.0000

MAXIMUM RINSE WATER TEMPERATURE: 170˚F (76.6˚C)

Use Bunn-O-Matic tubing, part number 32759.10XX (See Illustrated Parts Catalog for complete part number) for hot water connection.

RINSE WATER CONNECTION

Cold Water Connection

Install Water Strainer Here

MAIN WATER CONNECTION

Hot Water Connection (See Caution)

Install Water Strainer Here

Cold Water Connection

RINSE WATER CONNECTION

MAIN WATER CONNECTION

3/8" x 3/8" x 3/8" Barb Tee B.O.M. PN 32750.0000 (may be installed internal or external to the dispenser)

27442.0000

Hot Water Rinse Connection

NOTES:

• Use Bunn-O-Matic tubing, part number 32759.10XX for all connections. (See Illustrated Parts Catalog for complete part number)

• Clamp all hose connections with Bunn-O-Matic part number 21275.0003 (hose clamp)

Alternate Connection

(When Hot Water source is not available)

34054.0000

33854 092101

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 the dispenser on a sturdy counter or shelf able to support at least 230 lbs. (104.3 kg). The JDF-4 is designed for indoor use only.

Set the dispenser on the counter where it will be used. The JDF-4 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-4. 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 dispenser has an attached cord set and requires a 2-wire, grounded, individual branch circuit rated 120 volts ac, 15 amp, single phase, 60Hz. The mating connector must be a NEMA5-15R. (Refer to the dataplate for exact electrical requirements.)

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

33854 092101

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) barb 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 3/8” (9.52 mm) barb 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 pur-

chased direct from BUNN-O-MATIC (part number 32759.10_ _ [see Illustrated Parts Catalog for complete part 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. 1 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). PLUMBING HOOKUP

CAUTION: The dispenser must be disconnected

from the power source throughout the plumbing hookup.

RINSE WATER

All plumbing connections are located behind the dispenser’s splash panel. Water lines may enter the dispenser through the access holes in either the bottom panel or the rear panel of the dispenser. To access plumbing connections: remove the drip tray assembly; remove the two screws securing the splash panel to the dispenser; lower the splash panel from the front of the dispenser.

Hot Water Connection (See Caution)

Install Water Strainer Here

RINSE WATER CONNECTION

MAIN WATER CONNECTION

Cold Water Connection

Hot Water Rinse Connection

CONNECTION

MAIN WATER CONNECTION

Cold Water Connection

Install Water Strainer Here

Alternate Connection

(When Hot Water source is not available)

Refer to FIG 1 for proper water hookup.

FIG 1 Plumbing Connections

3/8" x 3/8" x 3/8" Barb Tee B.O.M. PN 32750.0000 (may be installed internal or external to the dispenser)

P2476

33854 092101

OPERATING CONTROLS

FIG 2 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.

P2262.60

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 3 Sanitize Switch & Water Valves

A. Sanitize Switch B. Water Bath Valve C. Main Water Valve

Water Bath and Main Water Valves

These valves are manually operated and are located above the drip tray, behind the splash panel. The drip tray and splash panel must be removed to gain access to the valves.

P2479

The left (small) one is the water bath valve and the right (large) one is the main water valve. Refer to the Initial Fill section for detailed instructions on the use of these valves.

33854 092101

OPERATING CONTROLS (cont.)

FIG 4 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. Chilled Water Dispense Switch

Pressing and holding switch will initiate chilled water flow from the nozzle; releasing the switch will stop the

flow. C. Hidden Switch

These switches are used to access, change and exit the dispenser program mode.

FIG 5 Portion Control Models B. Chilled Water Dispense Switch

Pressing and holding switch will initiate chilled water flow from the nozzle; releasing the switch will stop the

flow. C. Hidden Switch

These switches are used to access, change and exit the dispenser program mode. 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.

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 place the end into an empty 64 fluid ounce (2 liter) container.

3. Ensure that the Main Water Valve and the Water Bath Valve Fig 3, are turned off (handles positioned at 3 o’clock and 9 o’clock, respectively,) and that the Refrigeration Switch Fig 2, is in the OFF (rear) position.

4. Turn on the water supply.

5. While observing the water bath sight gauge (the clear tube located just to the left of the plumbing connections,) begin filling the water bath by rotating the handle of the Water Bath Valve counterclockwise to the 6 o’clock position.

6. When the water level in the sight gauge comes within 1 inch (25.4 mm) of the clear plastic tee, reduce the water flow by rotating the handle of the Water Bath Valve clockwise to the 8 o’clock position.

7. When the water in the water bath sight gauge begins to trickle down into the drip tray, turn the Water Bath Valve off by rotating the handle clockwise to the 9 o’clock position.

8. Connect the dispenser to the power source.

9. After approximately 3 minutes (this allows the recirculating pump and cabinet cooling components an opportunity to fill with water,) top off the water bath tank by rotating the handle of the Water Bath Valve counterclockwise to the 8 o’clock position.

10. Again, when the water in the water bath sight gauge begins to trickle down into the drip tray, turn the Water Bath Valve off by rotating the handle clockwise to the 9 o’clock position.

11. Place the Refrigeration Switch ON (forward.)

12. It will take approximately 4 hours at 70 degrees F (21 degrees 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

13. The dispenser will safely store concentrate once the “COOLING” indicator completely extinguishes (not lit steadily or flashing.)

14. After the refrigeration compressor switches off, turn Main Water Valve on by rotating the handle counterclockwise to the 12 o’clock position. Secure the overflow tube into its retaining clip and replace the splash panel and drip tray assembly.

Loading, Priming

and

Adjustment.

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.

33854 092101

INITIAL FILL (cont) Ambient Concentrates (Optional)

1. Install an Ambient Concentrate Conversion Kit (BUNN-O-MATIC part number 33699.0000) per the instructions

provided in the kit.

2. Attach the concentrate product hose to the appropriate concentrate line located behind the dispenser’s splash

panel.

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.

Note: The dispenser will not operate with the door open.

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.

33854 092101

DISPENSER USE

Press and Hold Models (Refer to Fig 4)

1. Place a cup on the drip tray beneath the desired dispensing nozzle.

2. Press and hold the “Product Dispense” or “Chilled Water” switch until the beverage/water reaches the desired level, then release.

Portion Control Models (Refer to Fig 5)

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.

4. To dispense chilled water, press and hold the “Chilled Water Switch” until the water reaches the desired level, then release.

33854 092101

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 64 ounces (1.89 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.

33854 092101

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. Remove the drip tray assembly and splash panel from the dispenser.

5. Replace the drip tray assembly.

6. Turn the Main Water valve to the 3 o’clock position.

7. Open the dispenser door and remove the product shelf.

8. Remove the DISPENSE/RINSE knobs Fig 6, all dispense nozzles, the 2 screws securing the cover to the

dispense platform, and the cover.

9. Disconnect the dispense platform’s water lines from the supply lines inside the refrigerated cabinet and

disconnect the wiring connections from the cabinet receptacles.

10. Remove the 2 thumb-screws securing the dispense platform to the cabinet .

11. Slowly pull the dispense platform forward to allow access to the rear wiring harness connector.

12. Disconnect the rear wiring harness connector from its receptacle.

13. Pull the dispense platform completely out of the cabinet and place it on a flat work surface.

14. Close the dispenser door.

15. Remove the screw securing the tubing retainer plate to the pump body and set it and the tubing retainer plate

aside.

16. Gently pull the socket head screw from its notch in the pump body, releasing the spring tension on the pump

band.

17. Gently pull the pump tube from around the pump’s rotor.

18. Inspect the pump band for signs of wear. Replace if necessary.

19. Release the clamps securing the old pump tubing to the plastic elbows.

20. Pull the plastic elbows from the old pump tubing, and discard the old pump tubing.

21. Insert the plastic elbows into the new pump tubing and secure it with the clamps.

22. Apply lubricant (BUNN-O-MATIC part number M2548.0000) to the new pump tubing’s rotor side.

23. 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.

24. Replace the socket-head screw into its notch in the pump body.

25. Replace the tubing retainer plate and its retaining screw.

26. Repeat steps 15 through 24 for the remaining pumps.

27. Replace the dispense platform into the refrigerated cabinet, making sure to reconnect all electrical and water

connections.

28. Turn the Main Water Valve to the 12 o’clock position. Check for leaks.

29. Replace the thumb-screws, cover, cover screws, DISPENSE/RINSE knobs and dispense nozzles.

30. Turn all DISPENSE/RINSE knobs to the RINSE positions. Close the door and run a rinse at each station. Check

for leaks.

31. Replace product shelf and product containers. Reconnect any connections to ambient product containers.

32. Prime the pumps as described in “PRIMING” in the Initial Fill Section.

33854 092101

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 4, 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 5, 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 4, until water and concentrate begin flowing freely from the dispense nozzle. Dispensers with Portion Control Feature:

Press and hold the “+/Stop Switch” Fig 5, 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.

33854 092101

ADJUSTMENT & OPTIONAL SETTINGS (cont)

Water Flow Testing and Adjustment

1. Enter the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches” Fig 4 or Fig 5. 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 4 (“+/Stop Switch” Fig 5, for portion control dispensers) for 5 seconds. Note that

FIG 7 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 7, (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 4 (“+/STOP Switch” Fig 5, 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 the “Product Dispense” (“+/STOP”) Switch is pressed, the motor speed is decreased by one step (5 RPM.) Note

33854 052102

ADJUSTMENT & OPTIONAL SETTINGS (cont)

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.

Chilled Water Flow Testing and Adjustment

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. 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 “Chilled Water Switch” Fig 4 or Fig 5, for 5 seconds. Note that the beeper sounds once per second (6 times, total) during this period.

4. At the end of the 5 second period, the chilled water will dispense for 3 seconds.

5. Measure the water dispensed. (Approx. 4.5 fl. oz. [133 ml])

6. If adjustment is required, remove all concentrate bottles from dispenser and disconnect any optional ambient concentrate hoses. Remove product shelf from dispenser.

7. Adjust the Chilled Water Flow Valve Fig 8, clockwise to decrease flow rate; counterclockwise to increase flow rate.

8. Repeat steps 3 through 6 as necessary until the desired water flow rate is achieved.

9. Exit the “Pump Speed Programming” mode by simultaneously pressing both “Hidden Switches”. Note that the beeper sounds twice and that the “PROGRAM” indicator extinguishes.

FIG 8 Chilled Water Flow Valve

P2263

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. Two different lock-out modes are available as follows:

Mode #1 locks out all dispense functions. Mode #2 locks out all dispense functions except the chilled water dispense.

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” (half filled circle) for mode #1, the right hand “Hidden Switch” (filled circle) for mode #2.

33854 052102

ADJUSTMENT & OPTIONAL SETTINGS (cont)

b) In a 5 second period, press and release the “Chilled Water 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 “Chilled Water 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, and the appropriate lock-out mode will be selected.

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”.

Note: The lock-out mode selected during password programming is automatically selected, regardless of the

hidden switch used to lock-out the dispenser.

b) In a 5 second period, press and release the “Chilled Water Switch” the “password” number of times. For example: If the password is set to 3, press and release the “Chilled Water 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 “Chilled Water Switch” the “password” number of times. For example: If the password is set to 3, press and release the “Chilled Water 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.

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 2, in the OFF (reward) position. c) While pressing and holding the “Chilled Water Switch”, connect the dispenser to its power source. d) Continue to hold the “Chilled Water 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,” open the dispenser door, 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.

33854 092101

ADJUSTMENT & OPTIONAL SETTINGS (cont) 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.

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 “Chilled Water Switch”, connect the dispenser to its power source. i) Continue to hold the “Chilled Water 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).

33854 092101

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.)

33854 092101

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.

33854 092101

CONDENSER

SUCTION

ACCUMULATOR

COMPRESSOR

EVAPORATOR

PROCESS TUBE

FILTER

DRYER

COOLANT SCHEMATIC DIAGRAM

33854 092101

CONDENSOR FAN

BLU/BLK

MOTOR

COMPRESSOR ASSEMBLY

LIMIT

THERMOSTAT

BLU/BLK

BLK

PUMP

GRN

GRY

WHI/BLK

BLK

t°

CABINET

THERMISTOR

#1 REFILL

SENSOR

#1 RINSE &

DISPENSE LIMIT

RINSE

DISPENSE

1111

VIO

GRY

WHI/VIO

PUMP

#2 REFILL

SENSOR

#2 RINSE &

RINSE

DISPENSE

GRY

WHI/ORN

GRN/YEL

BLK

t°

WATER BATH

THERMISTOR

ORN

WHI

P R O B E

DISPENSE LIMIT

COMP.

PUMP

#3 REFILL SENSOR

#3 RINSE &

RINSE

DISPENSE

GRY

BLU

WHI/BLU

WHI

GRY

PUMP

RED

VIO

RED

BLK

BEEPER

PNK

GRY

WHI

PNK

#4 REFILL

SENSOR

#4 RINSE &

DISPENSE LIMIT

DISPENSE

GRY

RED

WHI/RED

GRN

RINSE

WHI/YEL

WHI/RED

VIO ORN BLU YEL

YEL

WHI

WHI WHI/GRN

BRN/BLKBLU/BLK

ICE BANK

CONTROL

WHI

GRN

VIO

WHI/VIO

ORN

WHI/ORN

BLU

WHI/BLU

YEL WHI/YEL WHI/YEL WHI/BLU WHI/ORN WHI/VIO

RED

GRY

SANITIZE

SWITCH

VIO

GRY

DOOR

SWITCH

GRY PNK

RED BLK

FAN

BLUBRN

RECIR. PUMP

WHI

BLU

YEL

GRY

WHI/VIO

VIO

ORN

WHI/ORN

112

GRY

WHI/VIO

WHI/ORN

BRN/BLK BLKBLU/BLK

114

WHI/YEL

WHI/BLU

WHI/YEL

WHI/BLU

VIO WHI/VIO ORN WHI/ORN BLU WHI/BLU YEL WHI/YEL WHI/YEL WHI/BLU WHI/ORN WHI/VIO RED GRY

GRY

ON/OFF

BRN/BLK

GRY

VIO

ORN

BLU

YEL

WHI/VIO

WHI/ORN

WHI/BLU

WHI/YEL

TAN

RED/BLK

VIO

ORN

BLU

YEL

TAN

WHI/VIO

WHI/YEL

WHI/BLU

RED/BLK

WHI/ORN

RED/BLK

101

WHI

GRY

WHI/YEL WHI/BLU WHI/ORN

RED/BLK

WHI/VIO

WHI/RED

WHI/YEL

WHI/ORN

WHI/YEL WHI/ORN

WHI/BLU WHT/VIO

WHI/BLU WHI/VIO

GRN

WHI

TRANSFORMER

VIO

J5-10

C O N T R O L

B O A R D

J4-10

PNK

WHI/GRY

WHI/GRN

BLU

YEL

BLK BLK RED RED

BLU

WHI/BLU

BRN/BLK

J5-15

J4-14

VIO

ORN

GRNGRN

WHI/RED

RIGHT

LEFT LAMP

LAMP ASSY.

ASSY.

GRY

–

RECT

RED/BLK

WHI

BLK

J5-19

VIO

J9-1

ORN BLU YEL

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

BLK

FLUORESCENT

BLU

LAMP

WHI

BLU

BLK

GRY RED PNK

VIO

TAN

GRY GRY GRY

RED

RED/BLK

VIO

BALLAST

WHI/GRN

J6-1

J6-6

J6-12

J1-10

J1-18

101

WHI/VIO

J3-1 J3-2

J1-1

J1-5

WHI WHI/GRY

WHI

ORN

WHI/ORN

BLU

WHI/BLU

YEL

J5-1

J5-5

J4-1

GRY

GRN

WHI/BLK

WHI

WHI/YEL

J4-5

WHI

BLK

WHI

RINSE

SOL

NL1

WHI

WHI/BLK

RED/BLK

BLU

GRN

ORN

ORN/BLK

116

BLK/WHI

RED

BLU/BLK

RED/WHI

GRN/BLK

BLK

GRN/WHI

BLU/WHI

#1 DISPENSE

WHI/VIO

SOL

ICE WATER DISPENSE

TAN

SOL

120 VOLTS AC

2 WIRE

SINGLE PHASE

RED/BLK

WHI/ORN

#2 DISPENSE

SOL

RED/BLK

WHI/BLU

#3 DISPENSE

SOL

REFILL 1

WATER 1

#4 DISPENSE

RED/BLKRED/BLK

WHI/YEL

Bunn JDF-4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual