Bunn JDF-4S User Manual 2
JDF-2S
JDF-4S
Silver Series®
INSTALLATION & OPERATING GUIDE
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts
Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at
www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and
manual updates. For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.
44744.0002E 12/13 ©2012 Bunn-O-Matic Corporation
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY
Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers
and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor.
2) All other equipment - 2 years parts and 1 year labor plus added warranties as specified below:
a) Electronic circuit and/or control boards - parts and labor for 3 years.
b) Compressors on refrigeration equipment - 5 years parts and 1 year labor.
c) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis - parts
and labor for 4 years or 40,000 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, non periodic cleaning and descaling, equipment failures related to poor water quality,
damage or casualty. In addition, the warranty does not apply to replacement of items subject to normal use including but
not limited to user replaceable parts such as seals and gaskets. This warranty is conditioned on the Buyer 1) giving BUNN
prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Office
Box 3227, Springfield, Illinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an
authorized BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under
warranty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN are not authorized to make
modifications to this warranty or to make additional warranties that are binding on BUNN. Accordingly, statements by such
individuals, whether oral or written, do not constitute warranties and should not be relied upon.
If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts and/or labor (during the
applicable parts and labor warranty periods specified above) to repair the defective components, provided that this repair
is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for
the equipment.
THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS
EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S SOLE OPTION
AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.
In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of
use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities
or services, or any other special, incidental or consequential damages.
392, A Partner You Can Count On, Air Infusion, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with
the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design,
Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet
Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment
Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com,
Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality
in Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, Velocity Brew, Air Brew, Beverage Bar Creator, Beverage
Profit Calculator, Brew better, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital Brewer Control, Element, Milk Texturing Fusion, Nothing Brews Like a BUNN, Pouring Profits, Signature Series, Sure Tamp, Tea
At Its Best, The Horizontal Red Line, Ultra are either trademarks or registered trademarks of Bunn-O-Matic Corporation.
The commercial trifecta® brewer housing configuration is a trademark of Bunn-O-Matic Corporation.
2
44744.2 070913
WARNING
FAILURE TO COMPLY RISKS EQUIPMENT
DAMAGE, FIRE OR SHOCK HAZARD.
READ THE ENTIRE OPERATING MANUAL INCLUDING
THE LIMIT OF WARRANTY AND LIABILITY BEFORE
BUYING OR USING THIS PRODUCT.
00986.7000A 10/07 ©2007 Bunn-O-Matic Corporation
AVERTISSEMENT
• NE PAS SURCHARGER LE CIRCUIT.
• TOUJOURS METTRE LE BOITIER À LA MASSE.
• NE PAS DÉFORMER LA FICHE OU LE CORDON.
• SE CONFORMER AUX CODES NATIONAL OU LOCAL
D'ÉLECTRICITÉ.
• GARDER LES PRODUITS COMBUSTIBLES À DISTANCE.
TOUT MANQUEMENT À SE CONFORMER À CES DIRECTIVES PEUT
ENTRAINER DES DOMMAGES À L'ÉQUIPMENT OU PRODUIRE DES
DANGERS D'INCENDIE OU D'ÉLECTROCUTION.
VEUILLEZ LIRE LE MANUEL DE FONCTIONEMENT
EN ENTIER, Y COMPRIS LES LIMITES DE GARANTIES ET
RESPONSABILITÉS,AVANT D’ACHETER
OU D'UTILISER LE PRÉSENT PRODUIT.
L' ÉQUIPEMENT EST TOUJOURS SOUS TENSION
LORSQU'IL N'EST PAS DÉBRANCHÉ.
• DO NOT OVERLOAD CIRCUIT.
• ALWAYS ELECTRICALLY GROUND THE CHASSIS.
• DO NOT DEFORM PLUG OR CORD.
• FOLLOW NATIONAL AND LOCAL
ELECTRICAL CODES.
• KEEP COMBUSTIBLES AWAY.
THIS EQUIPMENT IS ENERGIZED AT ALL TIMES UNLESS
ELECTRICALLY DISCONNECTED.
AVERTISSEMENT
Pièces amovibles
Ne pas utiliser
l'appareil lorsque
le panneau est
enlevé.
Risk de choc électrique.
Debrancher le cordon
d'alimentation de
l'appareil avant de faire
l'entretien.
Moving Parts.
Do not operate
unit with this
panel removed.
Risk Of Electrical Shock.
Disconnect power before
servicing unit.
CHARGE
Type R134A, Amount 9 oz (255 gm)
Design Pressures: High 255 psi (15.5 bar)
Low 36 psi (2.5 bar)
CONTENTS
Warranty ........................................................................................................................ 2
User Notices .................................................................................................................. 3
Initial Set-Up & Electrical Requirements ........................................................................ 4
Plumbing Requirements ................................................................................................ 4
CE Requirements ........................................................................................................... 4
Door Cover Installation .................................................................................................. 5
Plumbing Hookup .......................................................................................................... 6
Initial Fill ........................................................................................................................ 6
Loading ........................................................................................................................ 15
Priming ........................................................................................................................ 15
Operating Controls ......................................................................................................... 8
Dispenser Use .............................................................................................................. 10
Portion Control Option ................................................................................................. 10
Cleaning ....................................................................................................................... 12
Adjustments & Optional Settings ................................................................................. 14
Function Lists .............................................................................................................. 18
Troubleshooting ........................................................................................................... 20
Coolant Diagram .......................................................................................................... 26
Schematic Wiring Diagram .......................................................................................... 27
Quick Setup Guide ....................................................................................................... 29
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.
As directed in the International Plumbing Code of the
International Code Council and the Food Code
Manual of the Food and Drug Administration (FDA),
this equipment must be installed with adequate
backflow prevention to comply with federal, state
and local codes. For models installed outside the
U.S.A., you must comply with the applicable Plumbing /Sanitation Code for your area.
00656.0001
00986.7000
12559.0003
27442.7000
CHARGE
Type R134A, Amount 10 oz (283 gm)
Design Pressures:
High 335 psi (23 bar) (2.31 MPa)
Low 88 psi (6 bar) (0.61 MPa)
33461.0000
JDF-4S
33461.0001
JDF-2S
3
44744.2 082112
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). This dispenser is designed
for indoor use only.
Set the dispenser on the counter where it will be used. This dispenser 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 dispenser. Leave some space so the dispenser can be moved for cleaning.
CE REQUIREMENTS
• This appliance must be installed in locations where it can be overseen by trained personnel.
• For proper operation, this appliance must be installed where the temperature is between 5°C to 35°C.
• Appliance shall not be tilted more than 10° for safe operation.
• An electrician must provide electrical service as specied in conformance with all local and national codes.
• This appliance must not be cleaned by water jet.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabili-
ties, or lack of experience and knowledge, unless they have been given instructions concerning use of this appliance by
a person responsible for its safety.
• Children should be supervised to ensure they do not play with the appliance.
• If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service personnel with a special
cord available from the manufacturer or its authorized service personnel in order to avoid a hazard.
• Machine must not be immersed for cleaning.
ELECTRICAL REQUIREMENTS
CAUTION: The dispenser must be disconnected from the power source until specified in Electrical Hook-Up.
The 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.
The 220-230V rated dispenser has an attached cord set and requires an attachment plug cap rated at least 230 volts
ac, 15 amp. The attachment plug cap must meet with applicable national/local electrical codes.
Refer to the data plate 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. Confirm that the refrigeration switch near the main control board is in the OFF 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.
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 regulator is also necessary if the water source has
pressure fluxuations. The main water inlet is a 3/8” (9.52 mm) MFL connection.
NOTE- At least 18 inches (457 mm) of an FDA approved flexible beverage tubing, such as reinforced braided polyethylene,
before the dispenser will facilitate movement to clean the countertop. It can be purchased direct from BUNN-O-MATIC (part
number 34325.10_ _ [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.
As directed in the International Plumbing Code of the International Code Council and the Food Code Manual of
the Food and Drug Administration (FDA), this equipment must be installed with adequate backflow prevention
to comply with federal, state and local codes. For models installed outside the U.S.A., you must comply with
the applicable Plumbing /Sanitation Code for your area.
4
44744.2 062912
DOOR COVER INSTALLATION
1. Install door cover by first plugging the door harness connector into the machine harness connector located
at the bottom of the machine door.
JDF-2S
P3577
2. On Portion Control models, connect membrane
switches to Door Circuit Board.
JDF-4S Shown
3. Install door cover
JDF-2S & JDF-4S
JDF-4S
P3578
4. Secure the door cover using 5 screws provided.
JDF-2S
P3579
JDF-4S
5
P3840
44744.2 110813
PLUMBING HOOKUP
The plumbing connection is located on the rear of the dispenser. A 3/8" (9.52 mm) male flare adapter fitting
is supplied, installed on the rear of the dispenser.
NOTE - Water pipe connections and fixtures directly connected to a potable water supply shall be sized, installed
and maintained in accordance with federal, state and local codes.
P3841
FIG 1 Plumbing Connections - JDF-2S
P3580-1
FIG 2 Plumbing Connections - JDF-4S
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. Replace the drip tray.
2. Connect the water source to the back of the dispenser.
3. Pull the fill tube from the dispenser, remove the plug and connect it to the dispense nozzle (Fig. 5 & 6).
4. Set the Program Switch (Fig. 7) to the ON position. (On older models without program switch, set the Dispense Lockout Switch (Fig. 13) to the OFF position)
5. Connect dispenser to the power source. Press and hold the dispense button for the dispense station that the
tube is connected to for 10 seconds, until you hear the water valve turn on. (For Portion Control machines,
press and hold the PLUS/STOP switch)
6. Monitor the water bath fill level until water starts to trickle from the overflow tube. Then press the dispense
button again to stop the fill process.
NOTE: The fill timer may time out before filling is complete. Press and hold the dispense button for 10 seconds
to start again if needed.
FIG 3 Initial Fill Hose - JDF-2S
FIG 4 Initial Fill Hose - JDF-4S
6
44744.2 110813
INITIAL FILL (Continued)
7. Turn ON the refrigeration switch near the main control board (Fig. 7). This will start the water bath pump
circulation.
8. Check water level in the overflow tube and top off the tank if necessary (Step 5).
9. Disconnect the fill tube and allow excess water to drain into the drip tray. Replace the plug in the end of the
fill tube and store back into the dispenser.
10. Set the Program Switch (near main control board) to the OFF position. (On older models without program
switch, set the Dispense Lockout Switch to the ON position)
11. Replace the splash panel and drip tray.
12. It will take several hours 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 Loading,
Priming and Adjustment.
FIG 5 Initial Fill Connection - JDF-2S
FIG 6 Initial Fill Connection - JDF-4S
7
44744.2 110813
OPERATING CONTROLS
Refrigeration Switch
The refrigeration switch is located on the Electrical Panel of the dispenser near the Circuit Board. This switch
controls power to the water bath pump and relay contacts for the compressor and condenser fan motor.
FIG 7 Refrigeration Switch
Product Dispense Switch (Mechanical Switch Machines)
Pressing and holding switch will initiate product flow from the respective nozzle; releasing the switch will stop
the flow.
FIG 9 Product Dispense Switches - JDF-2S
FIG 10 Product Dispense Switches - JDF-4S
8
44744.2 110813
OPERATING CONTROLS (Continued)
Product Dispense Switch (Membrane Switch Machines)
A. 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.
B. 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.
C. Chilled Water Dispense Switch (Optional for JDF-4S only)
Pressing and holding switch will initiate chilled water flow from the nozzle; releasing the switch will stop flow.
FIG 11 Product Dispense Switches - JDF-2S
Dispense Lockout Switch
This switch is located at the bottom front of the dispenser just behind the drip tray. It is used to turn ON
and OFF the Dispensing function. It is also used for
some programming and fill procedures.
FIG 12 Product Dispense Switches - JDF-4S
FIG 13 Dispense Lockout Switch
Program Switch
This switch is located near the main control board next
to the refrigeration switch.
FIG 14 Program Switch
9
44744.2 110813
OPERATING CONTROLS (Continued)
DISPENSER USE
Press and Hold Dispensing:
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 Option (Mechanical Switch Machines)
The dispenser is also equipped with a portion control option. The following steps will guide you through the set
up process for this option. Portion control can be set on one or all dispense heads as needed.
1. Unplug dispenser from power source.
2. Set the Program Switch (near main control board) to the ON position. (On older models without program
switch, set the Dispense Lockout Switch to the OFF position)
3. Remove drip tray and splash panel from the front of the machine then replace the drip tray.
4. Press and hold the left most (Station 1) dispense switch while plugging the dispenser into the power source.
Continue holding dispense switch(s) until all 4 temperature LED’s, Figs. 15 and 16 on the circuit board start
flashing slowly (this takes about 5 seconds). Release dispense switch(s).
5. Press and release any dispense switch 6 times to enter the portion control set up mode. This will cause the
4 temperature LED’s to flash rapidly.
6. Place a container under the desired dispense nozzle to measure the portion size.
7. Press and hold the desired dispense switch to dispense product until the desired amount of product is
achieved. (Maximum dispense time is 150 seconds). Repeat this on all dispense heads as desired.
8. Set the Program Switch (near main control board) to the OFF position. (On older models without program
switch, set the Dispense Lockout Switch to the ON position)
9. Place a container under the dispense nozzle(s) and press the dispense button to confirm that the portion size
is set correctly. Repeat steps 1-8 if any changes are needed.
10. Replace splash panel.
Note: The portion control dispense can be cancelled during a dispense by pressing the dispense button again.
Note: If a portion size is not set for a dispense head while in the portion control set up mode, that dispense head
will remain a push and hold dispense head.
Push and Hold Membrane Switch Machines
1. To set single portion sizes on a push and hold membrane type dispense switch, follow steps 1 - 10 above.
Portion Control Option (Membrane Switch Machines)
Portion sizes are preset but can be adjusted by following these steps below.
1. Set the Program Switch (near main control board) to the ON position. (On older models without program
switch, set the Dispense Lockout Switch to the OFF position)
2. Press and hold the large and medium buttons on the left most (Station #1) dispense station until you hear
the machine "beep" three times.
3. Place a measuring container under the station to be adjusted, then press and hold the apprpriate dispense
switch until the desired amount is dispensed. The machine will record the amount of time that the button is
pressed continously. If the button is released too soon, simply empty the container and start over.
4. Repeat step 3 for all stations as desired.
5. Turn the program switch to the OFF position.
10
44744.2 110813
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