Bunn LCR-3 User Manual

1.92 Mb

LCR-3 HV

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.

41129.0000H 06/11 ©2008 Bunn-O-Matic Corporation

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.

392, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, PowerLogic, Quality Beverage Equipment Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com, Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality in Beverage Equipment Worldwide, ThermoFresh, Titan, A Partner You Can Count On, Air Brew, Air Infusion, Beverage Bar Creator, Beverage Profit Calculator, Brew better, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Digital Brewer Control, Nothing Brews Like a BUNN, Pouring Profits, Signature Series, Tea At Its Best, Phase Brew, The Horizontal Red Line, trifecta, Ultra, Velocity Brew are either trademarks or registered trademarks of Bunn-O-Matic Corporation.

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CONTENTS

Warranty...........................................................................

2

Introduction......................................................................

3

User Notices.....................................................................

4

Electrical Requirements....................................................

5

Plumbing Requirements...................................................

5

Initial Set-up.....................................................................

6

Electrical Hook-up............................................................

6

Plumbing Hook-up...........................................................

6

Leveling the Dispenser.....................................................

6

Installing Pump Tubing.....................................................

7

Operating Controls & Interface.........................................

8

Initial Fill & Heat...............................................................

9

Rinse Alarm Feature.......................................................

10

BIB Empty Lockout Feature............................................

11

Brew Temperature Lockout Feature................................

11

Energy Saver Mode.........................................................

11

Optional 2-Product Operation.........................................

11

Programming the Dispenser...........................................

12

Loading the Concentrate.................................................

17

Priming the Concentrate Lines........................................

17

Operating the Dispenser.................................................

18

Filling Cambros or other large containers.......................

18

Cleaning & Preventive Maintenance................................

19

Replacing the Pump Tubing............................................

20

Draining the Hot Water...................................................

21

Troubleshooting..............................................................

22

Field Calibration of the Concentrate Pumps....................

25

Dispenser Flow Rate Calibration.....................................

25

Field Calibrating the Empty BIB Warning........................

26

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

27

INTRODUCTION

Always follow the Concentrate Manufacturer’s for recommendations for proper Storage and Shelf Life. The product Flavor Profile is extended by the refrigerated cabinet featured in the LCR-3. This dispenser is designed to operate at ambient temperatures from 32°F (0°C) minimum to 104°F (40°C) maximum.

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41129 060111

 

USER NOTICES

Carefully read and follow all notices on the equipment and in this manual. They were written for your protection. All notices are to be kept in good condition. Replace any unreadable or damaged labels.

00986.0002

To reduce the risk of electric shock, do not remove or open cover.

No user-serviceable parts inside. Authorized service personnel only. Disconnect power before servicing.

37881.0000

Optional Field Wiring

120/208 V, 37.6 A, 7820 W 1PH, 3-Wire + GND, 60HZ

120/240 V, 43.2 A, 10400 W

1PH, 3-Wire + GND, 60HZ

FOR USE ON INDIVIDUAL BRANCH CIRCUIT ONLY

120/208Y V, 32.8 A, 12000 W 3PH, 4-Wire + GND, 60HZ

28181.0004

 

WARNING:

HOT LIQUIDS

 

37280.0000

 

REMINDER!

AIR FILTER

CLEAN AIR FILTER

CLEAN WEEKLY!

 

WEEKLY

(LOCATED UNDER THE DISPENSER)

(LOCATED UNDER THE DISPENSER)

FILTRO DE AIRE

RECORDATORIO!

LIMPIAR

LIMPIAR EL FILTRO DE

SEMANALMENTE!

AIRE SEMANALMENTE

(LOCALIZADO DEBAJO

DEL DISPENSADOR)

(LOCALIZADO DEBAJO

DEL DISPENSADOR)

40054.0000

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

! CAUTION

Do not connect to a circuit operating at

00824.0002 more than 150 volts to ground.

27508.0000

Moving Parts.

 

 

 

 

 

 

Risk Of Electrical Shock.

 

 

Do not operate

 

 

Disconnect power before

unit with this

 

 

servicing unit.

panel removed.

 

 

 

 

 

 

 

 

 

27442.0000

CHARGE

Type R134A, Amount 13 oz (368.6 gm) Design Pressures:

High 276 psi (19 bar) (1.9 MPa) Low 88 psi (6 bar) (0.61 MPa)

33461.0004

 

 

TO MACHINE

 

 

 

BLK BLU

TO MACHINE

WHI

BLK

 

RED

 

BLU

 

WHI

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L1 L2 L3 N

TERMINAL

L1 L2 L3 N

BLOCK

 

 

 

 

FROM POWER SOURCE

 

 

FROM POWER SOURCE

FOR 3-PHASE OPERATION

 

FOR SINGLE PHASE OPERATION

CONNECT INPUT WIRING TO

 

 

MOVE BLU WIRE INTO

L1,L2,L3 & N AS SHOWN.

 

TERMINAL BLOCK WITH BLACK

 

 

WIRE, CONNECT INPUT WIRING

37947.0002 TO L1, L2 & N AS SHOWN.

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41129 060111

 

ELECTRICAL REQUIREMENTS

CAUTION: The dispenser must remain disconnected from power source until specified in Electrical Hook-Up. The LCR-3 HV is shipped configured for 3 Phase operation. The internal terminal block must be rewired for 208/240V – 1Phase applications, (see Optional Field Wiring Diagram).

FIELD WIRING TERMINAL BLOCK DIAGRAM

 

 

TO MACHINE

 

BLK BLU

TO MACHINE

WHI

BLK

 

RED

 

BLU

 

WHI

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

L1 L2 L3

N

TERMINAL

L1 L2 L3

N

BLOCK

 

 

 

 

FROM POWER SOURCE

 

FROM POWER SOURCE

 

Fig 1

 

 

Fig 2

For all 208 - 240 Volt Connections: Use No. 6 AWG Wires suitable for 90°C (194 °F)

1.Unit is shipped wired for 3 Phase / 5 wire operation.

2.For 208 - 240V / 1 Phase / 3 Wire: Move the Blue Heater wire to the Top Black Terminal as shown.

3.Unit requires120 Vac from L1 to N.

PLUMBING REQUIREMENTS

The dispenser may be connected to a cold or hot water system (140°F Max.) with operating pressure between 20 and 90 psi (138 and 620 kPa) from a 1/2” or larger supply line. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The dispenser is set up to deliver to 6 Oz./sec. (177.4 ml/sec) and requires a water supply that can deliver a minimum of 3 gpm (11.4 lpm) at the inlet valve. A shut-off valve should be installed in the line before the dispenser.

NOTE: The water inlet fitting is 3/8” flare. Bunn-O-Matic recommends 3/8” flexible tubing from the 1/2” water supply line. At least 18 inches of FDA approved beverage tubing, such as reinforced braided polyethylene or silicone, before the dispenser will facilitate movement to clean the counter top. Bunn-O-Matic does not recommend the use of a saddle valve to supply water to the dispenser. The size and shape of the hole made in the supply line made by this type of device may restrict water flow.

NOTE: The water level sensors in this machine do not work with de-ionized water and may cause the unit to overflow. RO (Reverse Osmosis) water supply systems may need to be treated to restore free ions to the water.

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.

ALTERNATE LOCATION FOR THE WATER AND ELECTRICAL CONNECTIONS

The LCR-3 HV is supplied with the electrical and water connections at the back of the dispenser. However, in some applications it may be more convenient for one or both of these connections to be located in the bottom of the dispenser. To change the location, remove appropriate cover plate(s) from the bottom of the dispenser. Remove the valve and/or electrical clamp and holes plugs from the back of the dispenser and install them in the bottom panel. Re-install the cover plate on the back of the dispenser to cover the open holes. Take care to replace and tighten all water clamps, mounting screws and the plastic hole plugs.

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41129 060111

 

INITIAL SET-UP

NOTE: The LCR-3 HV dispenser weighs approximately 180 lbs. (82 kg). Use more than one person when lifting or moving the dispenser.

1.Cut the straps and remove the box and foam packing.

2.Locate and remove the information packets and tube kits from top of packaging and set aside.

3.Set dispenser on the counter where it is to be used. CAUTION: DO NOT LIFT ON THE DOOR.

4.Confirm the dispenser is level on the counter (See LEVELING THE DISPENSER).

ELECTRICAL HOOK-UP

CAUTION: Improper electrical installation will damage electronic components.

1.An electrician must provide electrical service as specified in conformance with all local, state and federal electrical codes.

2.Using a voltmeter, check the voltage and color-coding of each conductor at the electrical source.

3.If plumbing is to be hooked up later, be sure the dispenser is disconnected from the power source. If plumbing has been hooked up, the dispenser is ready for Initial Fill & Heat.

PLUMBING HOOK-UP

1.Flush the water line to remove any debris or foreign material.

2.Securely attach the water line to the 3/8” flare fitting, lower – right - rear corner of the dispenser.

3.Turn on the water supply and check for leaks.

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.

LEVELING THE DISPENSER

Proper leveling of the dispenser is required to insure proper drainage of condensation from the refrigeration unit.

1.Set the dispenser on a level counter top.

2.Use the (6) adjustable legs to level the dispenser.

3.Once the unit is level, adjust the front three legs out another 1/16” to create a slight tilt towards the rear of

the dispenser. (See Fig. below)

LEVEL

1/16"

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41129 060111

 

DRIP TRAY INSTALLATION

1.Unscrew the middle and right front legs (Fig. 1) - just enough to allow the mounting bracket to slide under the legs, (~1/8”).

Caution: The LCR-3 HV is very heavy. Use wood blocks to hold the machine up while working underneath it!

2.Insert the bracket between the legs and the base of the machine and retighten the legs, (Fig. 2).

Fig. 1

Fig. 2

3.Insert the Drip Tray onto the mounting bracket, (Fig. 3). Make sure the drain fitting is still protruding through the hole.

Fig. 3

Optional Drip Tray Drain

A separate drain tube (not supplied) may be attached to fitting in the bottom of the tray, if desired. Note: Drill a ¼” hole in the center of the fitting, before attaching the drain hose. Direct the other end of this hose into a permanent drain.

Alternate Evaporator Drain

For locations where the Drip Tray is not desired, connect a separate drain hose (not supplied) to the Evaporator Drain Fitting and direct the other end of this hose into a permanent drain.

CAUTION: FAILURE TO INSTALL THE DRIP TRAY OR ALTERNATE EVAPORATOR DRAIN WILL RESULT IN WATER DRIPPING ON TO THE COUNTER AND/OR FLOOR UNDER THE DISPENSER.

INSTALLING THE PUMP TUBING

(Refer to the Tubing Installation Instructions in side the cabinet door for details.)

1.Loosen the thumbscrew securing the tubing retainer plate to the pump housing. Set the retainer plate aside.

2.Depress the tension screw and remove it from the notch in the pump body, releasing the pump compression band.

3.Apply lubricant (BUNN-O-MATIC part number M2531.0001) to the new pump tubing.

4.Insert the tubing onto the mix chamber port and wrap the tubing around the pump rotor, making sure that the elbow and clamps end up on the bottom side of the pump body.

5.Close the compression band reinsert the tension screw into the notch in the pump housing.

6.Replace the tubing retainer plate and tighten the thumbscrew.

7.Reconnect bag connector to the product box.

8.Repeat steps 1 through 7 for the other two pumps.

9.Prime the pumps. Refer to Priming the Concentrate Lines section.

Thumbscrew

 

 

 

 

 

 

 

 

 

 

 

 

 

Tension

 

 

 

 

2.0”

 

 

 

 

 

2.0”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw

 

Lubricate between arrows

 

 

Remove Retaining Plate Release Spring Tension

Remove Tubing

 

 

Lubricate New Tube

Tension Screw

 

Tube Clamp

 

Install New Tubing

Completed Installation

7

41129 110608

 

OPERATING CONTROLS AND INTERFACE

1.Master ON/OFF Switch: Disconnects AC Power to the dispenser.

2.Hot Water Handle: Pull and Hold to dispense hot water manually.

3.Door Interlock Switch: Unit will not dispense product if the door is open.

4.LCD Display: Displays status, programming menus and fault messages.

5.Volume Selection: Rotate dial to the desired volume prior to dispensing product.

6.Dispense Switches (A-B-C): Push and Release to dispense the desired product. (These also double as programming switches in the Set-Up mode).

7.Function Selector Switch: Allows the user to set the dispenser into different dispensing modes.

a.RINSE: Dispenses hot water only - Flushes the mix chamber and dispense tip.

b.RUN: Normal dispense mode - Dispenses mixed product (concentrate and water).

c.PRIME: Dispenses concentrate only – Primes the concentrate pump.

8.Hidden Set-Up / Programming switches.

a.Press and hold the Right switch for 5 sec. to enter in the Set-Up mode.

b.Use the Right switch to scroll down and the Left switch to scroll up through the menu screens.

3

2

4

 

8

 

6

 

7

1

5

 

8

41129 052208

 

INITIAL FILL & HEAT

1.Confirm the water supply is on.

2.Connect the dispenser to the power source.

3.Turn the Master ON/OFF Switch ON and select RUN on the Function Selector Switch. The LCD will display “Tank Filling – Please Wait!” and water will begin flowing into the tank.

4.Once the tank is full the dispenser will start heating the water and display “Heating – Select Flavor”. Dispenser models with product chillers will also begin to cool the cabinet at this time.

5.The LCD will display “Ready Select Flavor” when the tank temperature reaches the preset Ready

Temperature.

Note: The time required to heat the water initially will vary depending on the AC Power and the temperature of the incoming water. While the tank is heating, the dispenser may be readied for use as described in Programming Functions & Basic Operations.

4

3

9

41129 052208

 

Rinse Alarm Feature

Periodic rinsing of the mix chambers and dispense tips is essential for proper maintenance and optimum performance of the dispenser. The automated Rinse Alarm feature has three levels of operation; see Programming the Dispenser to select the desired alarm mode.

Alarm Level

Alarm Mode

Disabled

None

Warning Only

“Rinse Required” will be displayed 4 hrs prior to the selected time interval to remind the

 

operator that the Rinse Procedure needs to be preformed soon. The dispenser will continue

 

to serve product, even if the full time interval elapses.

Brew Lockout

“Rinse Required” will be displayed 4 hrs prior to the selected time interval to remind the

 

operator that the Rinse Procedure needs to be preformed soon. However, the dispenser will

 

Lockout and not continue to serve product once the selected time interval has elapsed.

NOTE: The time interval between Rinses is adjustable from 8 to 24 hrs. The dispenser is shipped with the Rinse Alarm disabled, (No Alarm). It is up to the user to determine the Rinse time interval and the level of warning required, based on their application and maintenance procedures.

1 4

Rinse Procedure:

1.Select Rinse on the Function Selector switch.

2.Place a 2 Liter (1/2 Gal) container under the dispense tip.

3.Activate any of the dispense switches until the water flow stops automatically, approximately 10 sec. The Rinse Alarm message will go away, when the Rinse procedure has been satisfied.

4.Select Run on the Function Selector switch.

10

41129 120909

 

BIB Empty Lockout Feature

The dispenser can be set to not dispense product when the concentrate BIB is empty. To enable this feature, first calibrate the Empty BIB Threshold (refer to Field Calibrating the Empty BIB Warning). Then enable the BIB Empty Lockout feature (refer to the BIB Empty Lockout menu in Programming the Dispenser). The dispenser will now Lockout dispensing and display “RIGHT, MIDDLE or LEFT BIB EMPTY – Replace Now!”. Once the BIB has been replaced, PRIME the concentrate line (refer to Priming the Concentrate Lines) to clear the Empty BIB warning. NOTE: If the BIB Empty warning reappears, repeat the Priming operation a second time to insure the concentrate is flowing properly.

Brew Temperature Lockout Feature

The dispenser can be set to not dispense product if the hot water is not up to the preset READY temperature. To enable this feature, set the READY temperature to the minimum allowable dispense temperature. Then enable the Brew Lockout feature, refer to READY TEMP and BREW LOCKOUT, in Programming the Dispenser. The dispenser will display “HEATING – Please Wait” and not allow dispensing until the tank temperature reaches the preset READY temperature.

Energy Saver Mode

The LCR-3 HV can be set to turn off or lower the temperature when not in use. This feature allows the user to enable the Energy Saver Mode, set the Idle Time (length of time the dispenser is inactive before the Energy Saver Mode is activated) and choose between shutting the tank heaters OFF or holding the tank at 140° F (60° C) for faster recovery, (refer to Programming the Dispenser). When enabled, the dispenser will automatically go into the Energy Saver Mode after a predetermined time of inactivity, (Idle Time). When in this Mode the display will show “EnergySaver Mode / Press Any Switch.”

NOTE: Activating any switch on the control panel will cancel the Energy Saver Mode and reset the Idle Timer. Once the Energy Saver Mode is cancelled, the dispenser will display “Unit Re-heating / E-Saver Mode On” and not dispense product until the water temperature has reached the normal Tank Temperature. Once the normal Tank Temp is reached, the dispenser will revert to typical operation and displays.

Optional 2- Product Operation

The LCR-3 HV can be configured to deliver only two coffee products for applications where additional volume a given product is needed. This feature allows the operator to load the same concentrate into the Left & Middle position, thus doubling the amount of product that can be dispensed - before having to replace the concentrate. The dispenser will automatically switch from one concentrate container to the other when a BIB Empty threshold is exceeded. The LCD will display “(LF or MID) BIB EMPTY - Replace Soon” to indicate that BIB is empty.

To enable this feature, first calibrate the Empty BIB Threshold (refer to Field Calibrating the Empty BIB Warning). Then select (2) in the 2 or 3 PRODUCTS? menu screen, (refer to Programming the Dispenser).

NOTE: If the operator feels the unit is waiting too long to switch over to the other BIB (i.e. too much clear water during the switch over) - increase the Empty BIB threshold and retest. Repeat this process until you are satisfied that the original BIB is nearly empty and switch over time is acceptable.

The operator can choose to replace the empty BIB right away or wait until the second BIB is empty. The dispenser will continue to switch from one BIB to the other, until it gets two BIB Empty warnings in a row. The dispenser will then shut down and display “BIB EMPTY - Replace Now!” indicating that both BIB’s are empty. Replace the BIB’s and PRIME the concentrate line (refer to Priming the Concentrate Lines) to clear the BIB Empty warning. If the BIB Empty warning reappears, repeat the Priming operation a second time to insure the concentrate is flowing properly.

NOTE: The BIB EMPTY LOCKOUT feature is automatically enabled when this feature is selected.

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41129 071409

 

PROGRAMMING THE DISPENSER

Press the Right Hidden Switch for 5 sec. to enter the programming menu. Use the Left and Right hidden switches to scroll through the menu screens. Select Exit to leave the programming function and return to normal operations.

NOTE 1: Flashing menu items indicate which selection is active.

NOTE 2: Values shown below are the factory default values for English units. NOTE 3: Values in [X - X] are the Min. and Max. for that function.

LCD DISPLAY

READY

SELECT FLAVOR

LEFT DISP RATIO (-) 30:1 (+)

MID DISP RATIO (-) 30:1 (+)

RIGHT DISP RATIO (-) 30:1 (+)

LF DISP VOLUME 1 (-) 36.0oz (+)

LF DISP VOLUME 2 (-) 192.0oz (+)

LF DISP VOLUME 3 (-) 384.0oz (+)

MID DISP VOLUME 1 (-) 36.0oz (+)

MID DISP VOLUME 2 (-) 192.0oz (+)

MID DISP VOLUME 3 (-) 384.0oz (+)

RT DISP VOLUME 1 (-) 36.0oz (+)

RT DISP VOLUME 2 (-) 192.0oz (+)

RT DISP VOLUME 3 (-) 384.0oz (+)

ACTION

Hold the RT Hidden Switch for 5 seconds to enter Programming Functions Use the (+) or (-) buttons to adjust the Mix Ratio

Use the (+) or (-) buttons to adjust the Mix Ratio

Use the (+) or (-) buttons to adjust the Mix Ratio

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

Use the (+) or (-) buttons to adjust the Volume

DESCRIPTION

Normal Display for LCR models.

Enter the desired Mix Ratio for the concentrate used in the Left dispenser. [20:1 - 100:1]

Enter the desired Mix Ratio for the concentrate used in the Middle dispenser. [20:1 - 100:1]

Enter the desired Mix Ratio for the concentrate used in the Right dispenser. [20:1 - 100:1]

Set the desired SMALL portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired MEDIUM portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired LARGE portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired SMALL portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired MEDIUM portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired LARGE portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired SMALL portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired MEDIUM portion control volume: (0 - 640 oz) or (0 - 18.93L)

Set the desired LARGE portion control volume: (0 - 640 oz) or (0 - 18.93L)

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41129 071409

 

PROGRAMMING (Continued)

LCD DISPLAY

TANK TEMP 190 (-) EXIT (+)

READY TEMP 180 (-) EXIT (+)

CABINET TEMP 38 (-) EXIT (+)

ACTION

Use the (+) or (-) buttons to adjust the target Temp.

Use the (+) or (-) buttons to adjust the target Temp.

Use the (+) or (-) buttons to adjust the target Temp.

DESCRIPTION

Sets the water Tank temperature: (120 - 200°F) or (49 - 93°C)

Sets the hot water Ready temperature: Typically set to the min. desired dispense temp.

Sets the Chilled cabinet target temperature: (38 - 50°F) or (3 - 10°C)

The following functions can be Password Protected. If you wish to prevent others from accessing these functions, enter a 4 digit code of your choice. Record your password code [_ _ _ _], as you will need it to access these functions in the future.

LCD DISPLAY

ENTER PASSWORD

(-)

0

(+)

 

 

SET PASSWORD ?

(-)

0

(+)

 

 

 

2 OR 3 PRODUCTS?

(2)EXIT (3)

SELECT UNITS

ENG EXIT METRIC

 

 

 

 

REFRIGERATION ?

 

If ON

ON

EXIT

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

DEICE CYCLE TIME

 

 

 

 

(-)

120 MIN (+)

 

 

 

 

 

 

 

 

 

 

If NO

RINSE ALARM ?

NO

EXIT

YES

 

If YES

 

 

 

 

 

 

 

 

 

 

 

RINSE TIME ?

 

 

 

 

(-)

12 HRS

(+)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RINSE LOCKOUT ?

 

 

 

 

NO

EXIT

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to Next Page

ACTION

Use the (+) or (-) buttons to enter password.

Use the (+) or (-) buttons to change the password.

Select the number of products to be dispensed

Select the preferred units.

Select OFF to disable the Refrigeration system

Select the time delay between automatic deicing of the cabinet

Select (YES) or (NO)

Use the (+) or (-) buttons to adjust Rinse Alarm delay.

Select (YES) to enable

DESCRIPTION

Enter the access Code to view the remaining functions. Factory Default = 0.

Enter your own Code to prevent access to the remaining functions. [0 to 9999]

Used to switch from standard 3 products to 2 products w/Autoswitching of the Left and Middle Bibs.

Used to select the preferred units of measurement. (Oz., Gal, deg F) or (mL, L, deg C)

Select OFF to temporarily override a cooling system fault and allow the machine to dispense coffee.

If ice builds up on the evaporator - decrease the delay. If the cabinet is not cold enough - increase the delay.

Factory Default=120 (2 hrs)[min=30, max=180]

Selecting Yes will enable the Rinse Alarm function, (see Rinse Alarm)

Enter the desired time between required Rinse Cycles in hours. [8 to 24 hrs]

Select YES to Lockout dispensing until the Rinse Alarm has been cleared. Default is NO.

13

41129 071409

 

PROGRAMMING (Continued)

LCD DISPLAY

BibEMPTY LOCKOUT

NO EXIT YES

BREW LOCKOUT ? NO EXIT YES

ENERGY SAVER MODE

NO EXIT YES

E-SAVER IDLE TIME (-) 4 HRS (+)

E-SAVER TANK TEMP NO EXIT 140

ACTION

Select (YES) to enable

Select (YES) to enable

Select (ON) to enable

Use the (+) or (-) buttons to adjust the Idle Time

Select OFF or 140° F (60°C)

DESCRIPTION

Select YES to Lockout dispensing until the BIB is replaced and the pump has been Primed. Default is NO.

Select YES to Lockout dispensing until the hot water tank is at READY Temp. Default is NO.

Select ON to enable Energy Saver Mode. Default is OFF.

Enter the amount of inactive time before the dispenser goes into Energy Saver Mode. Default is 4 hrs. Maximum is 24 hrs.

Choose OFF to turn the tank heaters off completely or 140°F (60°C) to hold hot water at 140°F (60°C) during E-Saver Mode. Default is 140°F (60°C).

14

41129 071409

 

PROGRAMMING (Continued)

The following functions are for diagnostic and troubleshooting purposes and typically do not have to be adjusted. Contact your local service agent for assistance before making changes to these functions.

LCD DISPLAY

CAL LEFT PUMP ? LEFT

CAL LF PUMP VOL (-) 58mL (+)

CAL MIDDLE PUMP ?

MIDDLE

CAL MID PUMP VOL (-) 58mL (+)

CAL RIGHT PUMP ? RIGHT

CAL RT PUMP VOL (-) 58mL (+)

CAL HI WTR FLOW PULL DISPENSER

CAL HI WTR VOL (-) 1720mL (+)

XXX CAL -> XXX

(-) Tank Temp (+)

BIB EMPTY -> 600 (-) EXIT (+)

ACTION

DESCRIPTION

Place a 50 mL (#34843.1000) graduated cylinder under the dispense tip, then activate the Left Pump

Use the (+) or (-) buttons to enter volume collected

Place a 50 mL (#34843.1000) graduated cylinder under the dispense tip, then activate the Middle Pump

Use the (+) or (-) buttons to enter volume collected

Place a 50 mL (#34843.1000) graduated cylinder under the dispense tip, then activate the Right Pump

Use the (+) or (-) buttons to enter volume collected

Place a 64oz (2000mL) container under the dispense tip, then Press and Hold any Dispense Switch

The Left Pump will dispense concentrate for 10 seconds, then shut off automatically. Collect and measure the concentrate dispensed.

Enter the volume of concentrate measured from the Left Pump in mL, (not Oz.)

The Middle Pump will dispense concentrate for 20 seconds, then shut off automatically. Collect and measure the concentrate dispensed.

Enter the volume of concentrate measured from the Middle Pump in mL, (not Oz.)

The Right Pump will dispense concentrate for 20 seconds, then shut off automatically. Collect and measure the concentrate dispensed.

Enter the volume of concentrate measured from the Right Pump in mL, (not Oz.)

The Dispenser will dispense hot water for 20 seconds, then shut off. Release Dispense Sw.

Use the (+) or (-) buttons to

Collect and measure the water dispensed. Enter

enter volume collected

the volume in mL. Default is 1720 mL

Use the (+) or (-) buttons to

Adjust the display reading to match a calibrated

adjust temperature reading

probe inserted next to the Tank Sensor, °F (°C)

Use the (+) or (-) buttons to

Used to set the Conductance Threshold for the

adjust Empty BIB threshold

Empty BIB warning. Default is 600

15

41129 071409

 

PROGRAMMING (Continued)

LCD DISPLAY

ACTION

 

 

XXOVERFLOW > 155

Use the (+) or (-) buttons to

(-) EXIT (+)

adjust Overflow threshold

 

 

 

 

XX REFILL -> 155

Use the (+) or (-) buttons to

(-) EXIT (+)

adjust Refill threshold

 

 

 

 

WTR START DELAY

Use the (+) or (-) buttons to

(-) .15SEC (+)

adjust delay time

 

 

 

 

WTR STOP DELAY

Use the (+) or (-) buttons to

(-) .15SEC (+)

adjust delay time

 

 

 

 

TEST SWITCHES ?

NONE

UseSwitchToTest

 

 

 

DESCRIPTION

Used to set the Conductance Threshold for the Tank Overflow Probe

Used to set the Conductance Threshold for the Tank Refill Probe.

Dispense Valve ON Delay. Eliminates weak mix at the beginning of a dispense.

Dispense Valve OFF Delay. Flushes the mix chamber at the end of a dispense.

Switch Diagnostic: Activate switches separately to test. Display will indicate which Switch has been activated. NOTE: Door Interlock switch must be held closed.

TEST REFILL ?

Momentarily depress (YES)

Refill Valve Diagnostic: Press YES to momentarily

EXIT YES

 

 

energize the Solenoid. CAUTION: Inlet Valve will

 

 

 

open and water will flow, if connected and turned

 

 

 

 

 

 

ON.

 

 

 

TEST HEATER ?

Momentarily depress (YES)

Tank Heater Diagnostic: Press YES to momentarily

EXIT YES

 

 

energize the Tank Heater Circuit. CAUTION: AC

 

 

 

power will be applied to the Tank Heater Circuit.

 

 

 

 

 

 

ENTER ASSET #

Use the (+) or (-) buttons to

Allows the user the option of entering an Asset

(-) 000000 (+)

enter the ASSET NUMBER

Number. Default is 000000

 

 

 

 

 

 

 

 

SERIAL #

 

NONE

Displays the manufacture’s Serial Number (should

LCR 0000000

 

be identical to the Serial Number on the Data

 

 

 

Plate)

 

 

 

 

 

 

VIEW FAULTS?

Select (+) to view the Fault

This unit stores the last 3 Fault Conditions in

(-) EXIT (+)

Conditions

memory for diagnostic purposes.

 

 

 

 

 

 

LATEST FAULT

Use the (+) or (-) to scroll

Displays up to 3 FAULT Conditions or NO

NO FAULTS

through the Faults

FAULTS, if nothing has failed since the last “Reset

 

 

 

Defaults”.

 

 

 

 

 

CAUTION: Selecting YES will RESET all Program-

FACTORY DEFAULTS

Select (YES) or (NO)

NO

YES

 

ming Functions to the Factory Default settings

 

 

 

 

16

41129 021709

 

LOADING THE CONCENTRATE

1.Thoroughly mix concentrate by vigorously shaking the product Bag-In-Box (BIB).

2.Pull the BIB connector through the hole provided in the box.

3.Open the dispenser door and locate the appropriate left, middle or right BIB Adapter fitting.

4.Connect the Adapter fitting to the BIB. Make sure the locking mechanism is fully engaged!

5.Place the BIB upright in the machine, rotating it into position with the connector down and facing forward.

6.Rotate the BIB Adapter to avoid sharp bends in the tubing and allow it to be routed between the pumps. Refer to the Tube Installation Decal on the door for proper routing.

7.Close the cabinet door.

Fig. 1

Fig. 2

Fig. 3

PRIMING THE CONCENTRATE LINES

1.Select PRIME on the Function Selector Switch.

2.Load concentrate per instructions in the section titled Loading the Concentrate.

3.Place a container under the dispense tip.

4.Activate the appropriate pump switch until concentrate flows from the dispense tip, (approx 5 to 10 sec).

5.Repeat steps 2 through 4 for the other two pumps, if needed.

6.Select RUN on the Function Selector Switch.

Note: Concentrate may continue to drip out of dispense tip. The user may wish to run a Rinse Cycle (refer to Rinsing) after Priming the dispenser to clean out the remaining concentrate.

1 6

17

41129 052208

 

OPERATING THE DISPENSER

The Cabinet door must be closed & latched and the Function Selector Switch set to RUN to dispense coffee.

To Dispense Coffee

1.Select the desired volume (1, 2 or 3) using the rotary switch.

2.Place the appropriate container under the dispense tip.

3.Press and release the desired flavor switch to dispense product. The LCD will display “DISPENSING PRODUCT” “PRESS ANY SWITCH TO STOP”. Note: Pressing any switch after starting a dispense cycle - will abort that dispense and halt the flow of product.

4.Remove the container and serve accordingly.

To Dispense Hot Water

1.Place container under the hot water dispenser tip.

2.Pull and Hold the Hot Water handle until the water reaches the desired level, then release.

3.Remove the container.

NOTE: For large containers that will not fit under the dispense tip, a short 3/8” diameter NSF approved hose may be used.

FILLING CAMBROS OR OTHER LARGE CONTAINERS

The dispenser is designed primarily for containers that will fit under the dispense tip. However, it may be used to fill larger containers (up to 5 Gal) by use of an extension hose on the dispense tip. Care must be taken to insure that the mixed product flows freely from the dispense tip into the container.

1.Use a 5/8” I.D. or larger, NSF (National Sanitation Foundation) approved hose.

2.Use as short a hose as possible with no loops, bends or kinks in it.

3.Insure that the outlet of the hose is below the dispense tip and that the mixed product flows freely into the container.

4.A properly sized and positioned hose will not run full or back up into the dispense tip. Failure to follow these directions can alter the mix ratio and/or cause flooding of the vent tube.

NOTE: Recovery time will be dependent on the temperature of the supply water and the supply voltage to the dispenser.

18

41129 052208

 

CLEANING & PREVENTATIVE MAINTENANCE

General Cleaning and Sanitizing Procedures

Note: The BUNN® Liquid Coffee Dispenser incorporates a “user selectable” rinse reminder feature and can be set to disable dispensing when it is time to rinse. See Programming Functions to activate this feature.

Daily: RINSING & CLEANING

1.Select RINSE on the Function Selector Switch.

2.Place a 1/2 gal (2 liter) container under the dispense nozzle.

3.Press and Hold any flavor selection switch for approximately twenty seconds or until the hot water is clear or has no concentrate coloring in it.

4.Wipe splash panels, dispense nozzle, door, and cabinet with a clean sanitary cloth.

Note: To clear the “Rinse” alarm, activate the dispenser until the flow stops automatically (approx. 20 seconds). The “Rinse” alarm display will turn off when the Rinse Procedure has been satisfied.

Weekly: SANITIZING

1.Select PRIME on the Function Selector Switch and open the dispenser door.

2.Remove the bag connector from the product BIB and disassemble or prop open the internal valve to allow flow of product through the connector.

NOTE: Cutting the mating fittings from an empty bag makes an excellent “free flowing” connector for this purpose.

3.Place the bag connector into a one-gallon (3.8 liter) container of warm soapy tap water 140°F (60°C).

4.Place an empty container under dispense tip and activate the corresponding pump until the clean soapy water is dispensed from the dispense tip.

5.Repeat steps 3 and 4 with warm tap water 140°F (60°C) to rinse the soapy water from the pump tubing.

6.Continue dispensing until the water is clear, and no soapy water is being dispensed.

7.Prepare 2.5 gallons (9.46L) of sanitizing solution by dissolving 1 packet of Kay 5 sanitizer into 2.5 gallons (9.46L) of 120°F (48.9°C) water to ensure 100 ppm of available chlorine.

8.Again, repeat steps 3 and 4 with the sanitizing solution. Once sanitizing solution is visible, continue to dispense for 1 minute. Release handle and allow solution to sit for 5 minutes.

9.After soaking for 5 minutes, activate the dispense switch a second time, this time for 2 minutes. After 2 minutes, release the dispense switch.

10.Repeat steps 5 & 6 wit warm tap water to flush out the sanitizing solution from the pump tubing.

11.Reattach the bag connector to product BIB.

12.Close the dispenser door and select NORMAL on the Function Selector Switch.

13.Activate the dispenser until concentrate/water mixture appears. Then dispense 20 ounces (600 ml) container of concentrate/water mixture and discard.

14.Repeat steps 1 through 13 for other two Pumps.

15.Wipe internal and external surfaces with a clean, sanitary cloth.

Weekly: REFRIGERATION AIR FILTER

1.Remove the screen filter from the bottom of the dispenser.

2.Wash the screen in a mild detergent solution.

3.Use a soft bristled brush to remove all dust and grease.

4.Reinstall the screen.

PREVENTIVE MAINTENANCE

Bunn-O-Matic® Corporation recommends that preventive maintenance be performed at regular intervals. Maintenance should be performed by a qualified service technician. For Technical Service, contact Bunn-O-Matic® Corporation at 1-800-286-6070.

NOTE: Replacement parts or service caused by failure to perform required maintenance is not covered by warranty. Replace pump hoses every 6-Months or as needed.

19

41129 030910

 

REPLACING THE PUMP TUBING

The pumps and tubing used in this dispenser are designed to give maximum performance and long life. However, the tubes are a wear item and must be replaced periodically. How long the tubes last is dependent on usage and properties of the concentrate. Excessive wear will reduce the output of the pumps resulting in a weak mixed beverage.

Bunn-O-Matic recommends replacing the Pump Tubing a minimum of once every 6 months or sooner, if warranted.

Refer to the Tube Replacement Instruction on the Cabinet door for details.

1.Rinse the pump tubing with warm tap water (Refer to step 5 of the Weekly Sanitizing instructions) prior to removing the tubes to avoid concentrate spills.

2.Loosen the thumbscrew securing the tubing retainer plate to the pump housing. Set the retainer plate aside.

3.Depress the tension screw and remove it from the notch in the pump housing, releasing the tube compression band.

4.Open the compression band and gently pull the pump tube from around the pump’s rotor.

5.Inspect the pump bands for signs of cracking or excessive wear. Replace if necessary.

6.Apply lubricant (BUNN-O-MATIC part number M2531.0001) to the new pump tubing’s rotor side.

7.Insert the tube onto the mix chamber port, then wrap the new tubing around the pump rotor, making sure the elbow and clamps end up on the bottom side of the pump housing.

8.Depress the tension screw and insert it in the notch in the pump body, reapplying spring tension to the compression band.

9.Replace the tubing retainer plate and tighten the thumbscrew.

10.Repeat steps 1 through 9 for the other two pumps.

Note: Replacement Tube/Adapter Kits can be purchased from BUNN-O-MATIC.

Thumbscrew

 

 

 

 

 

 

 

 

 

 

 

 

 

Tension

 

 

 

 

2.0”

 

 

 

 

 

2.0”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw

 

Lubricate between arrows

 

 

Remove Retaining Plate Release Spring Tension

Remove Tubing

 

 

Lubricate New Tube

Tension Screw

 

Tube Clamp

 

Install New Tubing

Completed Installation

20

41129 030910

 

DRAINING THE HOT WATER TANK

CAUTION: The dispenser must be disconnected from the power source throughout these steps.

1.Disconnect the dispenser from the power source.

2.Shut off and disconnect the incoming water supply.

3.Remove the lower right access panel.

4.Pull out drain tube to empty into a sink or a container with a minimum of 18 gallon capacity.

5.Make sure drain clamp is closed. Then, remove drain plug.

6.Direct tube into sink or container and open drain clamp. Continue draining tank until ALL of the water is

out.

CAUTION: The water may be very hot as it drains out of the tank. Make sure the hose is directed away from the body.

7. Close drain clamp, insert drain plug, place drain tube back into machine, and replace the access panel. Note: The dispenser must be refilled using the Initial Fill & Heat steps before reconnecting the power source.

21

41129 052208

 

Troubleshooting

A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department.

Only qualified service personnel should perform inspection, testing, and repair of electrical equipment.

Shorting the terminals or the application of external voltages to electronic components may result in component or circuit board failure.

Intermittent operation of electronic circuit boards is unlikely. board failure will normally be permanent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose wire connection at a terminal or crimp.

Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.

The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help avoid twists and kinks in the tubing.

Make certain that all plumbing connections are sealed and all electrical connections are tight and isolated.

This dispenser is heated at all times. Keep away from combustibles.

WARNING:

Exercise extreme caution when servicing electrical equipment.

Disconnect the brewer from the power source when servicing, except when electrical tests are specified.

Follow recommended service procedures.

Replace all protective shields or safety notices.

Screen Displayed

Possible Cause

Troubleshooting Procedures

 

 

 

NO DISPLAY

No Power to the Dispenser

Check Master ON/OFF Switch

 

 

Check Power Cord & Circuit Breaker

 

 

Service Required

 

 

 

 

 

 

HEATING

Water temp is below the preset

Wait for water temp to rise

Please Wait!

READY temp

Check Ready Temp. threshhold setting

 

 

Service Required

 

 

 

 

 

 

RINSE REQUIRED

Rinse Alarm Time Interval has

Rinse Dispenser, see Rinse Procedure

 

expired

Replace BIB, see Loading the Concentrate

 

 

 

 

 

 

XXXX BIB EMPTY

Concentrate BIB is empty.

Replace BIB, see Loading the Concentrate

Replace BIB Soon

BIB not properly connected.

Check BIB Connector Fittings

 

Tubing kinked or blocked.

Check Tubing Installation

 

Empty BIB Threshhold too high.

Check Empty BIB Threshhold, see Field

 

 

Calibrating the Epmty BIB Warning

 

 

 

 

 

 

____ TARGET RPM

The calculated Target RPM for

Check Pump & Flow Rate Calibration, refer

TOO HIGH !!

the pump indicated is out of

to Field Calibration Procedures

 

range

 

 

 

 

22

41129 052208

 

Troubleshooting (Continued)

Screen Displayed

Possible Cause

Troubleshooting Procedures

 

 

 

____ TARGET RPM

The calculated Target RPM for the

Check Pump & Flow Rate Calibration, refer

TOO LOW !!

pump indicated is out of range

to Field Calibration Procedures

 

 

 

____ PUMP FAULT

1.

Pump Motor failure

Service Required

CHK PUMP WIRING

 

 

 

CHK RPM SENSOR

2.

RPM Sensor failure

Service Required

CHK TUBING AREA

3.

Tubing pinched in rollers

Replace Tubing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OVERFLOW

1.

Refill valve stuck open

Service Required

FAULT

2.

Faulty refill probe

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Faulty overflow switch

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEATING TIME

1.

Tank Heater failure

Service Required

TOO LONG

2.

Triac failure

Service Required

CHECK

 

 

 

 

HEATING

 

 

 

 

3.

Tank Temp. sensor failure

 

CIRCUIT

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FILL TIME

1.

Water shut off to dispenser

Check water supply valve

TOO LONG

 

 

 

CHECK

 

 

 

WATER

2.

Inlet Solenoid Valve failure

Service Required

 

 

SUPPLY

 

 

 

 

 

 

 

 

 

 

 

 

 

TANK SENSOR OUT OF RANGE

CHECK FOR BAD CONNECTIONS

CHECK WIRE FOR SHORTS

1.Corresponding Temperature Sensor Probe wire(s) broken or disconnected

2.Corresponding Temperature Sensor Probe wire(s) shorted to housing, or to each other.

Service Required

Service Required

23

41129 052208

 

Troubleshooting (Continued)

Screen Displayed

 

Possible Cause

Troubleshooting Procedures

 

 

 

 

 

 

COOL TEMP SENSOR

1.

ColdSensor wire(s)shortedtohousing,

Service Required

OUT OF RANGE

 

or to each other.

 

 

 

 

2.

Product cabinet temperature too

Service Required

CHECK FOR BAD

CONNECTIONS

 

high.

 

CHECK

 

 

3.

Product cabinet temperature too low.

Service Required

WIRE FOR

SHORTS

 

 

 

 

 

 

 

 

 

EVAP TEMP SENSOR

1.

Evaporator temperature too high or too

OUT OF RANGE

 

low.

 

 

 

 

2.

CorrespondingEvaporatorSensorProbe

CHECK FOR BAD

CONNECTIONS

 

wire(s) broken or disconnected.

CHECK

 

 

3.

Corresponding Temperature Sensor

WIRE FOR

SHORTS

 

Probe wire(s) shorted to housing, or

 

 

 

 

 

to each other.

Service Required

Service Required

Service Required

COOLER FAULT!

1.

Cabinet circulating fan failure

Service Required

 

 

EVAP TEMP TOO HI

2. Ice build up on evaporator coils

Service Required

 

 

 

 

 

 

 

CHECK

EVAP FAN

 

 

 

 

 

 

CHK EVAP SENSOR

3.

Evaporator sensor failure

Service Required

 

 

 

 

 

 

 

 

 

 

 

COOLING TIME

1.

Air intake filter clogged

Clean Air Filter

 

 

TOO LONG

2.

Wiring failure

Check wiring harness for breaks,

 

 

 

CHECK

AIR FILTER

 

 

shorts, open connectors

 

CHECK COOLING UNIT

3.

Compressor failure

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COND PROBE FAULT

1.

Concentrate buildup on probes

Check pump & tubing for proper

CHECK COND PROBES

2.

Machine dispensing continously

installation. Clean probes

 

 

 

 

Dispense

switch

failure,

Service

CHK DISP SWITCHES

3.

Water flowing continously

Required

 

 

 

CHK CONNECTIONS

Dispense

valve

leaking,

Service

 

 

 

 

 

Required

 

 

 

 

 

 

 

 

 

 

JUMPER FAULT!

1. Invalid wire harness configuation

Service Required

 

 

CONFIG

NOT VALID

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK J-18

ON CONTROL BOARD

24

41129 052208

 

Field Calibration of the Concentrate Pumps / Dispenser Flow Rates

The factory set Default Values for the Pump & Dispenser Flow Rates are very accurate and typically do not need to be field calibrated. However, if the mix ratio accuracy is ever in question, this procedure can be used to recalibrate the unit in the field. Equipment Required:

250 ml graduated cylinder, with 2 ml graduations. BUNN # 34028.0000 2000 ml graduated container. BUNN # 34843.0001

NOTE: You can calibrate either the Concentrate Pumps or the Dispenser Flow Rate independently. Simply scroll through the menu screen to the desired section and perform only those steps.

Calibrating the Left Concentrate Pump

1.Select PRIME on the Function Selector Switch. (refer to Priming the Concentrate Lines).

2.Place a container under the Dispense Tip and prime the concentrate lines until a steady stream of concentrate comes out the tip (approximately 10 seconds).

3.Stop the Priming and allow the tip to stop dripping. Discard the concentrate collected.

4.Select NORMAL on the Function Selector Switch.

5.Locate the programming module and use the Arrow Down key to scroll through LCD screens until CAL LEFT SIDE appears and press the YES button.

6.The CAL LEFT PUMP menu screen will be displayed. Place a 50 ml graduated cylinder under Dispense Tip and activate the Left dispenser momentarily. The dispenser will run the Left Concentrate Pump for 20 seconds and then shut OFF automatically.

7.Keep the graduated cylinder under dispense tip until all the concentrate has dripped out.

8.Measure the volume of concentrate collected in the graduated cylinder. The acceptable range for the volume collected for the 1/4” tubing is 50-60 ml.

9.If the amount collected is not within the acceptable range, empty the graduated cylinder and repeat STEPS 6 – 8.

10.If the amount collected is still not within range, replace the pump tubing with a new Tube Kit, (refer to the Tube Replacement Instructions).

11.When satisfied with the volume of concentrate collected, scroll down to the next menu screen.

12.The CAL LF PUMP VOL menu screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 8.

Repeat steps 2-11 to Calibrate the Middle and Right Pumps

Dispenser Flow Rate Calibration

1.Press the Right hidden switch to display the ? WTR FLO menu screen.

2.Place a 2000 ml graduated container under Dispense Tip and press Left Dispense Switch momentarily. The dispenser will dispense water for 10 seconds and then shut OFF automatically.

3.Keep the graduated container under dispense tip until all the water stops dripping.

4.Measure the volume of water collected in the graduated container. The acceptable range for the volume collected is 1600 to 2000 mL.

5.If the amount collected is not within the acceptable range, empty the graduated container and repeat STEPS 1 -4.

6.If the amount collected is still not within range, inspect the dispense valves, tubing and mix chamber for lime, kinks or other obstructions.

7.When satisfied with the volume of concentrate collected, scroll down to the next menu screen.

8.The CAL WTR VOL screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 4.

25

41129 052208

 

Field Calibrating the Empty BIB Warning

The dispenser will automatically display LEFT, MIDDLE or RIGHT BIB Empty when the corresponding Concentrate BIB is Empty. The Refill message is triggered when the Conductance Sensor reading drops below the minimum setting. The factory set minimum is 600 and should be correct for most locations. However, the hardness of the local water supply may affect this reading. If the Refill message doesn’t come on when the BIB is empty or the message comes on too early and there is still concentrate left in the BIB, use the following procedure to find the correct Empty BIB threshold.

Note: Increasing the threshold slightly will cause the Empty BIB warning to come on sooner. Lowering the threshold will draw more concentrate from the BIB, but could allow dispensing of weak coffee.

1.Set the Function Switch to the “Rinse” position.

2.Place a 1/2 gal or larger container under the dispense tip, then activate and hold the left dispenser.

3.Dispense long enough to rinse all the concentrate out of the mix chamber and for the conductance reading “COND” on the LCD to stabilize and stop dropping.

4.Record the nominal Conductance value displayed. (NOTE: It is typical for this value fluctuate (+/- 25) points about the nominal value}. This is the conductance reading of the water in your area.

5.Add 100 points to Conductance value. This is the new Empty BIB threshold value for your dispenser.

6.Enter this new value into the Empty BIB Alarm threshold, see Programming the Dispenser.

26

41129 052208

 

 

L1

L2

L3

N

 

DISPENSER REQUIRES

 

 

 

 

 

120VAC L1 TO N

TERMINAL

 

 

 

GRN

 

 

 

 

 

 

BLOCK

RED-12

BLU-12

 

 

• FOR 3 PHASE OPERATION, WIRE AS SHOWN.

BLK-12

WHI

WHI

• FOR SINGLE PHASE OPERATION, MOVE BLU

 

 

 

 

 

WIRE INTO CELL WITH BLK WIRE.

 

 

 

 

 

MAIN ON/OFF

SWITCH

BLU-12

RED-12

BLK-12

BLK

TAN

RED WHI

POWER SUPPLY

N(L2) WHI

L(L1) BLK

GRN

-V GRN

+V RED

TOUCHPAD

 

 

 

 

 

 

1

 

 

 

 

 

 

2

 

 

 

 

 

YES (+)

3

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

EXIT

5

 

 

 

 

 

6

 

 

 

 

 

NO (-)

 

 

 

RED

RED

7

 

 

 

 

RIGHT RPM

BLK

BLK

 

 

 

SENSOR

 

GRN

GRN

 

 

BLK

RIGHT

RED

 

ORN

 

 

 

PUMP

 

 

 

 

 

 

 

 

WHI/ORN

 

 

MIDDLE RPM

RED

RED/BLK

 

 

BLK

BLK

 

 

 

SENSOR

 

GRN

GRN

 

 

BLK

MID.

RED

 

 

 

 

 

PUMP

 

 

WHI/YEL

 

 

WHI/RED

 

AUXILLARY CONTROL BOARD

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

RELAY

BLK

 

 

 

 

RED

 

 

 

 

 

 

GRN

 

 

 

 

 

 

J2-1

 

 

 

J1-1

BLK

 

 

 

GRN

 

 

 

 

 

 

 

 

WHI/YEL

 

 

 

 

 

 

 

 

WHI/RED

RED/BLK

 

 

 

 

 

 

 

 

BLU/BLK

YEL

J2-5

 

 

 

J1-5

TAN

RED

 

 

 

 

 

 

 

 

 

 

 

BLU

 

 

 

 

 

 

 

 

RED/BLK

 

 

 

 

 

 

 

 

WHI/GRY

WHI/BLU

J2-8

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

TAN

 

 

 

 

 

J1-10

BLK

J3-1

 

 

 

WHI/YEL

 

 

 

 

 

 

BLK

J3-2

 

 

 

J1-12

 

 

 

 

 

 

LEFT RPM

RED

WHI/GRY

BLK

BLK

SENSOR

GRN

GRN

BLK LEFT

RED

 

PUMP

 

WHI/YEL

BLU/BLK

208-240 VOLTS AC

3 WIRE + GND

SINGLE PHASE 60HZ or

208-240 VOLTS AC

4 WIRE + GND

THREE PHASE 60HZ

41172.0000C 10/08 © 2008 BUNN-O-MATIC CORPORATION

 

 

SCHEMATIC WIRING DIAGRAM

LCR-3 HV

 

 

 

 

 

 

 

 

 

WHI

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK-12

 

 

BLK-12

 

LIMIT #1

BLK-12

TANK HEATER #1

LIMIT #1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED-12

RED-12

 

 

 

 

 

 

 

 

 

 

 

 

 

L1

 

T1

 

4

 

3

 

 

 

2

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIMIT #2

 

TANK HEATER #2

LIMIT #2

 

 

 

 

 

 

 

 

 

 

 

 

RED-12

 

 

RED-12

 

 

 

RED-12

BLU-12

BLU-12

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

T2

 

4

 

3

 

 

 

2

1

 

 

 

 

 

 

 

 

 

 

 

 

BLU-12

 

 

BLU-12

 

LIMIT #3

BLU-12

TANK HEATER #3

LIMIT #3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK-12

BLK-12

 

 

 

 

 

 

 

 

 

 

 

 

 

L3

 

T3

 

4

 

3

 

 

 

2

1

 

 

 

 

 

 

 

 

 

 

 

 

WHI

 

 

TAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EMI FILTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DOOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YEL

SOL

BRN/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MAIN

 

 

 

 

 

 

 

 

TAN BLK

RED

RED GRN

BLK

 

WHI

GRY

 

BLK

 

 

 

 

 

YEL

SOL

BRN/WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J1-1

 

J1-4

J2-1

 

 

J2-8

J15-1

J15-4

J3-1

WHI/BLU

 

 

 

MANIFOLD

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

YEL

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/RED

 

 

 

SOL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFILL

 

 

 

 

 

 

 

 

 

J14-1

 

 

 

 

 

 

 

J3-6

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/BLU

 

 

 

 

 

 

C

 

 

 

 

J4-1

YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

 

 

 

 

 

BRN/WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

J14-7

 

 

N

 

 

 

 

 

BRN/BLK

 

 

 

 

 

 

 

 

 

 

RED WHI/BLU

 

 

 

 

 

 

 

 

 

 

J4-5

 

 

 

 

 

 

 

 

 

 

 

 

GRN

J7-1

 

 

 

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

R

 

 

 

 

J5-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YEL

 

 

 

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED/BLK

 

ORN

 

J7-5

 

 

 

L

 

 

 

 

J5-3

BLU

 

 

 

 

 

 

 

 

 

 

RED

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

P

 

 

 

 

J16-1

ORN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/ORN

 

 

 

 

 

 

 

 

 

J16-5

WHI/ORN

 

 

 

 

 

 

 

 

 

RED/BLK

 

 

 

 

 

 

 

B

 

 

 

 

PNK

 

 

 

 

 

 

 

 

 

 

 

WHI/YEL

 

J7-10

 

 

 

 

 

 

 

 

WHI/YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J8-1

 

 

 

O

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J8-3

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/ORN

 

 

 

 

 

 

J18-1

 

 

D

 

 

 

 

 

GRN

 

 

 

 

 

 

 

PNK

 

 

 

WHI/GRN

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J16-12

 

 

 

 

 

 

 

 

 

 

BLK ORN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O P

L P

 

 

 

 

 

J18-5

 

 

 

 

 

 

 

 

 

 

 

 

WHI/YEL

BLK

 

 

V R

E R

1

 

 

 

 

 

 

 

 

 

 

 

 

 

J17-1

 

 

 

 

 

 

E O

V O

 

 

WHI/GRN

 

 

 

 

 

 

 

 

 

 

YEL

 

 

RED BLU BLK

 

 

 

 

R B

E B

 

 

 

 

J18-7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F E

L E

BLK

WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONDUCTANCE

 

 

L

 

 

 

 

J18-9

 

 

 

 

 

 

 

 

BLK

 

 

 

SENSOR

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

J17-4

 

 

RED BLU BLK

 

 

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

15

 

10

 

5

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

J6-

 

J6-

 

J6-

 

J6-

 

 

J6-

 

 

 

 

 

 

 

 

GRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t

 

 

 

WHI/BLU

GRY

 

 

 

TAN

PNK

WHI/BLU WHI/YEL

RED/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ROTARY

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/RED BLK

 

 

 

 

 

 

 

 

 

SWITCH

PNK

 

 

 

 

 

 

 

 

 

 

BLU BLK

 

BLK YEL

 

 

 

 

 

A

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

GRY

 

 

 

 

 

 

 

 

 

 

1

2

 

 

2

1

 

 

 

 

 

 

 

TAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SELECTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EVAPORATORFAN

 

 

 

 

 

 

 

 

B

 

 

SWITCH

 

 

 

 

 

 

 

 

 

EVAPORATOR

 

 

 

 

 

 

 

 

 

 

RINSE

WHI/YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/BLU

RUN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CABINET

 

 

EVAPORATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRIME

RED/BLK

 

 

 

 

 

 

 

SENSOR

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIMIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMP.

K2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMPRESSOR ASSEMBLY

GRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

 

CONDENSER FAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONDENSER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFRIGERATION CABINET

 

 

 

 

 

 

 

27

41129 110608