Bunn-O-Matic LCC-2 LP Operation Manual

LCC-2 LP

INSTALLATION & OPERATING MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

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

To obtain the Illustrated Parts Catalog, visit the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE, and the quickest way to obtain the catalog. Contact Buun-O-Matic Corporation at 1-800-286-6070 to obtain a paper copy of the required Illustrated Parts Catalog mailed via U.S. Postal Service.

37935.0001C 08/06 ©2005 Bunn-O-Matic Corporation

www.bunnomatic.com

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:

1) All equipment other than as specified below: 2 years parts and 1 year labor.

2) Electronic circuit and/or control boards: parts and labor for 3 years.

3) Compressors on refrigeration equipment: 5 years parts and 1 year labor.

4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis: parts and labor for 3 years or 30,000 pounds of coffee, whichever comes first.

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Office Box 3227, Springfield, Illinois 62708-3227; 2) if requested by

BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under warranty.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR

ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN are not authorized to make modifications to this warranty or to make additional warranties that are binding on

BUNN. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and should not be relied upon.

If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for the equipment.

THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF

THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S

SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.

In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.

BUNN, LCC-2 LP and BUNNLink are either trademarks or registered trademarks of Bunn-O-Matic Corporation.

2 37935.1 082906

CONTENTS

Warranty .................................................................................................................................................2

User Notices ...........................................................................................................................................4

Introduction ............................................................................................................................................5

Electrical Requirements ..........................................................................................................................5

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

Initial Set-up ...........................................................................................................................................6

Electrical Hook-up ...................................................................................................................................6

Plumbing Hook-up ..................................................................................................................................6

Operating Controls & Interface ...............................................................................................................7

Installing Pump Tubing ...........................................................................................................................9

Initial Fill & Heat ....................................................................................................................................10

Rinse Alarm Feature ..............................................................................................................................11

Programming the Dispenser .................................................................................................................12

Priming the Concentrate Lines ..............................................................................................................16

Draining the Hot Water..........................................................................................................................16

Operating the Dispenser ........................................................................................................................17

Cleaning & Preventive Maintenance ......................................................................................................18

Replacing the Pump Tubing ..................................................................................................................19

Calibrating the Dispenser ......................................................................................................................20

Troubleshooting Guide ..........................................................................................................................22

Field Calibration of the Concentrate Pumps ..........................................................................................24

Dispenser Flow Rate Calibration ...........................................................................................................24

Field Calibrating the Empty Product Warning ........................................................................................25

Schematic Wiring Diagrams ..................................................................................................................26

3 37935.1 052305

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.

00656.0000

00986.0002

37881.0000

11646.0002

4

27508.0000

208-240V Models only

USE COPPER WIRE ONLY FOR

POWER SUPPLY CONNECTIONS

00870.0000

208-240V Models only

37935.1 082906

INTRODUCTION

The Liquid Coffee Chilled Dispenser delivers two types of coffee plus hot water. The dispenser can be set up for continuous draw (by the cup) for self-serve applications, or portion-control to fill carafes and decanters for wait staff.

ELECTRICAL REQUIREMENTS

Refer to Data Plate on the dispenser, and local/national electrical code to determine circuit requirements.

WARNING - If the power cord is ever damaged, it must be replaced by the manufacturer or its service agent with a special cord available from the manufacturer or its service agent in order to avoid a hazard.

The 120V LCC-2 LP dispenser is supplied with a 120-volt / 15 Amp cord set and require a 2-wire, grounded, individual branch circuit rated for 120 volts AC, 15 amp, single phase, 60Hz. The mating connector must be a

NEMA 5-15R.

The LCC-2A LP dispenser is supplied with a 230-volt / 16 Amp cord set.

The 208-240V LCC-2 LP dispenser is not supplied with a cord set. It requires a 2-wire, grounded, individual branch circuit rated for 208-240 volts AC, 20 amp, single phase, 60Hz.

L2 RED

L1 BLACK

208 or 240V A.C.

208-240V Models

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 3/8” or larger supply line. A shut-off valve should be installed in the line before the dispenser. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to

50 psi (345 kPa). The water inlet fitting is 1/4” flare. Dispensers set up to deliver to 47.3 ml/sec (1.6 Oz./sec.) and require a water supply source that can deliver a minimum of 1.7 gpm (6.4 lpm) at the inlet fitting.

NOTE: Bunn-O-Matic recommends 1/4” tubing from the 3/8” water supply line. At least 18 inches of FDA approved flexible beverage tubing, such as reinforced braided polyethylene or silicone, before the dispenser will facilitate movement to clean the counter top. It can be purchased direct from Bunn-O-Matic (part number 00326.0000).

Bunn-O-Matic does not recommend the use of a saddle valve to install the dispenser. The size and shape of the hole made in the supply line by this type of device may restrict water flow.

This equipment must be installed to comply with the Basic Plumbing Code of the Building

Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA). For models installed outside the

U.S.A., you must comply with the applicable Plumbing/Sanitation Code for your area.

BUNN recommends the use of our Easy Clear ® Water Quality Systems to assure perfect taste.

Filter Kit - Easy Clear EQ-11-TL Bunn-O-Matic part no. 30344.1001

5 37935.1 082906

INITIAL SET-UP

NOTE: The LCC-2 LP weighs approximately 70 lbs. (32 kg). If necessary, use more than one person when lifting or moving the dispenser.

1. Cut the plastic bands and remove the top box.

2. Locate and remove the parts box from top of packaging and set aside.

3. Remove foam packing.

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

5. Open the parts box remove the drip tray, brackets and splash guard.

6. Install the drip tray assembly.

a. Loosen the front two legs several turns.

b. Slide the drip tray brackets between the large washers and the base plate.

c. Retighten the two front legs securing the bracket.

d. Install the drip tray.

7. Install the splash guard panel.

a. Insert the top tabs into the slots on the door panel.

b. Align the key hole slots over the two lower screws, then slide the splash guard down.

c. Tighten the two lower screws.

8. Level the dispenser using the adjustable feet on the legs.

PLUMBING HOOK-UP

1. Securely attach the short piece of tubing and the water strainer assembly to the inlet fitting on the bottom of the dispenser.

2. Flush the water line to remove any debris or foreign material, and securely attach it to the flare fitting on the water strainer assembly.

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

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. 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 & Heat.

6 37935.1 052305

OPERATING CONTROLS AND INTERFACE

1. Dispense Switches: Push to dispense product.

2. Stop Switch: Momentary switch stops all dispense functions.

3. Hot Water Switch: Push and Hold switch to dispense hot water from the center dispense tip.

4. Carafe Switch: Momentarily pushed to select the Carafe dispense Volume.

5. Power LED: Red - illuminates when AC power is applied to dispenser.

6. Ready LED: Green - illuminates when the water is at the preset ready temperature.

7. Carafe LED: Yellow - illuminates when the portion dispense option has been selected, (5 second delay).

8. Rinse LED: Yellow - illuminates when the optional preset rinse alarm time has elapsed.

9. Left Refill LED: Yellow - illuminates when the Left Concentrate Can needs replaced.

10. Right Refill LED: Yellow - illuminates when the Right Concentrate Can needs replaced.

11. Function Selector Switch: Allows the user to select different dispensing functions. (Located behind the splash guard panel) a. Rinse: Dispenses hot water only- Flushes the mix chamber and dispense tip. b. Prime: Dispenses concentrates only – Primes the concentrate pump.

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

12. Mode Selector Switch: Allows the user to select different operating modes.

a. Run: Normal operating position.

b. Night: Anti-pilfering mode that disables dispensing, but keeps heater and chiller operational.

WARNING - The NIGHT Mode does not remove AC power from the dispenser. Disconnect power source before servicing the dispenser.

c. Program: Enables programming and set up of the dispenser.

13. Programming Switches: Used in conjunction with the LED display to program and calibrate the dispenser to customer specific requirements.

a. MENU: used to scroll to the next menu screen.

b. (+): used to increase the displayed value.

c. (-): used to decrease the displayed value.

14. LED Display: Displays programming menus and fault messages.

(For 208-240V Models only)

15. Master ON/OFF Switch: Enables and disables power to the control board and other circuitry.

WARNING - This switch does not remove AC power from the entire dispenser. Disconnect power source before servicing the dispenser.

(Continued Next Page)

7 37935.1 082906

7 8 5 6 9 10

2 4

14

1 3

11

12

13

Master ON/OFF Switch

(208-240V Models only)

8

15

37935.1 082906

INSTALLING PUMP TUBING

INSTALLING THE PUMP TUBING

Refer to the Tube Replacement Instruction inside the Cabinet door.

1. Loosen the thumbscrew securing the tubing retainer plate to the pump body and set the retainer plate aside.

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

3. Apply lubricant (BUNN-O-MATIC part no. M2531.0001) to the middle section of the new pump tubing.

4. Carefully wrap the new tubing around the rotor, making sure that the elbow and clamps end up on the front side of the pump body.

5. Depress the tension screw and insert it in the notch in the pump body, reapplying spring tension on the pump band.

6. Install the free end of the tube over the inlet port of the mix chamber on that side of the cabinet.

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

8. Open the product container and insert the stainless steel drawtube into the container.

9. Repeat steps 1 through 8 for the other pump.

Note: Replacement Tube Kits can be purchased from BUNN-O-MATIC. Order part no. 37942.1000

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

Retaining

Plate

Thumbscrew

Tension

Screw

Remove Retaining Plate Release Spring Tension

Inlet Port

Elbow &

Clamps

Remove Tubing

2.0”

2.0”

Lubricate between arrows

Lubricate New Tube

Install New Tubing Completed Installation

9 37935.1 063005

INITIAL FILL & HEAT

1. Select Normal on the Function Selector Switch and Run on the Mode Selector Switch.

2. Confirm the water supply is on.

3. Connect the dispenser to the power source. The Red POWER LED will illuminate and water will begin flowing into the tank. The dispenser will automatically stop filling when the tank is full. The dispenser will not begin heating the water until after the tank is filled. Dispenser models with product chillers will begin to cool the cabinet at this time.

4. The Green READY LED will illuminate when the tank temperature reaches the preset ready temperature.

3 4

10

1

37935.1 083005

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 two levels of operation, Disabled and

Warning.

Alarm Level Selected

Disabled

Warning

Alarm Mode

None

Rinse LED will come on 4 hrs prior to the selected time interval and remain on until the Rinse procedure has been performed. The dispenser will continue to serve product.

NOTE: The time interval between Rinses is adjustable from 0 to 24 hrs.

The dispenser is shipped with the automated 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.

To enable the automated Rinse Alarm feature, refer to RINSE ALARM in Programming the Dispenser.

Rinse Procedure:

1. Open the cabinet door and select Rinse on the Function Selector switch – close the door.

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

3. Activate the Left dispenser until water flow stops automatically, approximately 20 sec.

4. Repeat Steps 2 & 3 for the Right dispense tip.

NOTE: The Rinse LED will turn OFF, when the Rinse procedure has been satisfied for both sides.

5. Open the cabinet door and select Normal on the Function Selector switch – close the door.

5

1

11 37935.1 083005

PROGRAMMING THE DISPENSER

Open the dispenser door to access the digital programming module with LED display.

Two basic modes are available to the operator: Display Mode and Program Mode.

To enter the Display Mode, Set the RUN/NIGHT/PROGRAM Switch to the RUN position.

To enter the Program Mode, Set the RUN/NIGHT/PROGRAM Switch to the PROGRAM position.

Display Mode: Used to view the current set-up values. Use the MENU switch to scroll to the next display.

NOTE: The display blanks out after two minutes of inactivity. Press any button to activate the display.

DESCRIPTION

Alternates between Tank Temperature and Cold Shoe Temperature.

LCD DISPLAY

1 8 0

MENU (-) (+)

0 1 1 8 0

MENU (-) (+)

0 2 3 8

MENU (-) (+)

0 3 3 8

MENU (-) (+)

0 4 0 0

MENU (-) (+)

0 5 0 0

MENU (-) (+)

DISPLAY MODE

Home View

Tank Temperature

Regular Dispense Ratio

Decaf Dispense Ratio

Cup Dispense Volume

Carafe Dispense Volume

12

Displays target Tank Temperature (F°)

Displays Left Dispense Ratio (XXX:1)

Displays Right Dispense Ratio (XXX:1)

Displays Cup Dispense Volume (XX.

X Oz.). Set to 0.0 for “Push and Hold”

Dispense Mode.

Displays Carafe Dispense Volume

(XX.X Oz.)

37935.1 052305

PROGRAMMING THE DISPENSER (Cont.)

Display Mode (Continued)

LCD DISPLAY

0 6 0

DISPLAY MODE

Regular Dispense Total

MENU (-) (+)

0 7 0 Decaf Dispense Total

MENU (-) (+)

0 8 6 0 0

MENU (-) (+)

0 9 O F F

(-) (+) MENU

L C 0 x x

MENU (-) (+)

Empty Product Threshold

Rinse Alarm (Hrs)

DESCRIPTION

Displays Total Regular Coffee Dispensed

(XX.X Gal)

Displays Total Decaf Coffee Dispensed

(XX.X Gal)

Displays Empty Product Threshold

(Default = 600)

Displays The Hours Between Required

Rinses.

(Default = 0 > OFF, Alarm Disabled)

Displays Software Version # -

Exits To Home View After 3 Seconds.

13 37935.1 082905

PROGRAMMING THE DISPENSER (Cont.)

Program Mode

: Used to change or enter new set-up values.

To enter the Program Mode, Set the RUN/NIGHT/PROGRAM Switch to the PROGRAM position, the unit will display “__PPP” to indicate it is in the Program Mode. Use the MENU switch to scroll to the next display. Use the Increase (+) and Decrease (-) switch to adjust the values.

LCD DISPLAY

P 1 1 8 0

MENU (-) (+)

P 2 3 8

MENU (-) (+)

P 3 3 8

MENU (-) (+)

P 4 0 0 0

MENU (-) (+)

P 5 0 0 0

MENU (-) (+)

P 6 0 0 0

MENU (-) (+)

PROGRAM MODE

Tank Temperature

Cup Dispense Volume

Carafe Dispense Volume

DESCRIPTION

Default = 180°F

Range = 120° - 190°F

Ready Temp = Tank Temp minus 10°F

Left (Regular) Dispense Ratio Set Regular Coffee Ratio

Default = 38:1

Range = 25 Max / 50 Min

Right (Decaf) Dispense Ratio Set Decaf Coffee Ratio

Default = 38:1

Range = 25 Max / 50 Min

Set Cup Dispense Volume

Default = 0.0, Push & Hold

Range = 0.0 / 16.0 Oz.

Set Carafe Dispense Volume

Default = 0.0, Disabled

Range = 0.0 / 64.0 Oz.

Left (Regular) Dispense Total Reset Total to Zero (00.0 Gal)

14 37935.1 052305

PROGRAMMING THE DISPENSER (Cont.)

Program Mode (Continued)

PROGRAM MODE LCD DISPLAY

P 7 0 0 0 Right (Decaf) Dispense Total

MENU (-) (+)

P 8 6 0 0

MENU (-) (+)

Empty Product Threshold

DESCRIPTION

Reset Total to Zero (00.0 Gal)

P 9 O F F

MENU (-) (+)

L C 0 x x

MENU (-) (+)

Rinse Alarm Timer

Set Conductance Threshold

Default = 600

Range = 100 Min / 900 Max

To check Conductance of Hot Water, view the display while rinsing. Set value to 100 above reading.

Default = OFF > Rinse Alarm Disabled

Range = 1 - 24 hrs

Reminder Only. No Lock Out.

To clear alarm, set to RINSE Mode.

Press Left switch, then Right switch for 15 seconds each.

Displays Software Version # -

Exits To Home View After 3 Seconds.

15 37935.1 052305

PRIMING THE CONCENTRATE LINES

1. Open the dispenser door.

2. Select Prime on the Function Selector Switch and Run on the Mode Selector Switch.

3. Close the dispenser door.

4. Place a container under the dispense tip.

5. Activate the appropriate dispenser until concentrate flows from the dispense nozzle. Priming may take 5 to

10 seconds.

6. Open the dispenser door, select Normal on the Function Selector Switch.

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

2

6

2

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 right side access panel.

4. Pull out drain tube to empty into a sink or a container with a minimum of 200 ounce 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.

Be careful when draining the water as it may be very hot.

7. Close drain clamp, insert drain plug, place drain tube back into machine, and replace the right side access panel.

Note: The dispenser must be refilled using the Initial Fill & Heat steps before reconnecting the power source.

16 37935.1 083005

OPERATING THE DISPENSER

Set the Function Selector Switch to “Normal” and the Mode Selector Switch to “Run.”

1A. Push and Hold Dispense Mode (Cup at a time). See Programming Functions to set this amount.

a. Place cup on the tray beneath the dispensing tip.

b. Push and hold the corresponding dispense switch until the container is full.

c. Remove cup or container.

1B. Portion Dispense Mode. (Cup dispense volume preset to a desired amount) Refer to Programming Functions to set this amount.

a. Place cup on the tray beneath the dispensing tip.

b. Momentarily press the desired dispense switch. The dispenser will automatically dispense the beverage at the preset amount. Allow the mix chamber to drain at the end of the cycle.

c. Remove cup.

2. Carafe Dispense Mode. Refer to Programming Functions to set this volume.

a. Place the appropriate size container beneath the dispensing tip.

b. Momentarily press the Portion Switch. The Portion LED will illuminate for 5 seconds after the Portion

Switch is pressed.

c. Momentarily press the desired dispense switch. If the user waits longer than 5 seconds to push the switch, the dispenser will default back to the cup dispense mode. The carafe dispense mode can be disabled at any time during the dispense by either momentarily pushing the Dispense Switch again or pressing the

Stop button.

d. Wait for the container to fill and the dispenser to quit dispensing, then remove the container.

3. Hot Water Dispense a. Place a container under the dispense tip.

b. Push and hold the Hot Water switch until water reaches the desired level, then release.

c. Remove the container.

17 37935.1 052305

CLEANING & PREVENTATIVE MAINTENANCE

General Cleaning and Sanitizing Procedures

Note: The BUNN ® LCC-2 LP dispenser incorporates a “user selectable” rinse reminder feature, which lights the

Rinse LED on the front panel when it is time to rinse. See Programming Functions to activate this feature.

Daily: RINSING

1. Open the dispenser door and set the Function Switch to Rinse and the Mode Selector Switch to RUN.

2. Close the dispenser door and place a 1/2 gal (2 liter) container under the dispense nozzle area.

3. Depress both dispense switches until the water is clear or has no concentrate coloring in it, (10 to 20 sec.).

4. Open the dispenser door, set the Function Switch back to Normal.

Note: To clear the “Rinse” warning, depress both dispense switches (one at a time) until the flow stops automatically

(approximately 20 sec. for each tip). The “Rinse” LED will turn off when the Rinse time has been satisfied.

Daily: PARTS WASHING

1. Remove and wash the drip tray and drip tray cover in a mild detergent solution. Rinse thoroughly.

2. Wipe the splash panel, dispense nozzles, door, and cabinet with a clean damp cloth.

Weekly: SANITIZING

1. Open the dispenser door and set the Function Switch to Prime and the Mode Selector Switch to Run.

2. Remove stainless steel drawtube from the product container and set the product container aside.

3. Place the stainless steel drawtube into a one-quart (1 liter) container of warm soapy tap water 140°F

(60°C).

4. Place an empty container under dispense nozzle area and depress the corresponding dispense switch until the clean soapy water is dispensed from the dispense nozzle.

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

Continue depressing the dispense switch until the water is clear, and no soapy water is being dispensed.

6. Prepare one-quart (1 liter) of sanitizing solution with at least 100 ppm of available chlorine in 120°F (48.9°C) water.

7. Repeat steps 3 and 4 with the sanitizing solution. Once sanitizing solution is being dispensed, release the dispense switch and allow the solution to sit for 5 minutes.

8. After the sanitizer has set in the lines for 5 minutes, repeat step 5 with warm tap water to flush out the sanitizing solution.

9. Insert the drawtube into the product container and return it to the cabinet.

10. Select Normal on the Function Switch and Run on the Mode Selector Switch.

11. Depress the dispense switch until the concentrate and water mixture appears at the dispense nozzle. Continue to dispense at least 12 ounce (355 ml) of concentrate/water mixture and discard.

12. Repeat steps 1 through 11 for other dispense head.

Air Filter Cleaning

Monthly cleaning of the air filter is recommended. Severe conditions may require more frequent cleaning.

18 37935.1 052305

REPLACING THE PUMP TUBING

The pumps and tubing used in the 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 inside the Cabinet door.

Note: To avoid concentrate spills, rinse the pump tubing with warm tap water prior to removing the tubes, (Refer to steps 1 - 4 of the Weekly Sanitizing instructions).

1. Loosen the thumbscrew (Fig 1) securing the tubing retainer plate to the pump body and set the retainer plate aside.

2. Depress the tension screw and remove it from the notch in the pump body, releasing the spring tension on the pump band (Fig 2).

3. Gently pull the pump tube from around the pump rotor (Fig 3).

4. Inspect the pump bands, rollers and housing for contamination or signs of wear. Clean or replace worn parts if necessary.

5. Apply lubricant (BUNN-O-MATIC part no. M2531.0001) to the middle section of the new pump tubing (Fig

4).

6. Carefully wrap the new tubing around the rotor, making sure that the elbow and clamps end up on the front side of the pump body (Fig 5).

7. Depress the tension screw and insert it in the notch in the pump body, reapplying spring tension on the pump band.

8. Install the free end of the tube over the inlet port of the mix chamber on that side of the cabinet (Fig. 5).

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

9. Open the product container and insert the stainless steel drawtube into the container (Fig 6).

10. Repeat steps 1 through 9 for the other pump.

Note: Replacement Tube Kits can be purchased from BUNN-O-MATIC. Order part no. 37942.1000

Retaining

Plate

Fig 1

Thumbscrew

Fig 2

Tension

Screw

Fig 3 Fig 4

Remove Retaining Plate Release Spring Tension

Fig 5

Inlet Port

Elbow &

Clamps

Remove Tubing

Fig 6

2.0”

2.0”

Lubricate between arrows

Lubricate New Tube

Install New Tubing Completed Installation

19 37935.1 063005

CALIBRATING THE DISPENSER

NOTE: The LCC-2 LP is calibrated at the factory and does not normally need to be re-calibrated. To enter the

Calibration Mode, Set the RUN/NIGHT/PROGRAM Switch to the PROGRAM position and then hold the “MENU” switch down for 10 seconds.

MENU

MENU

LCD DISPLAY

C 1 r u n

(-)

(-)

(+)

C 1 2 2

(+)

C 2 r u n

MENU (-) (+)

C 2 2 2

MENU (-) (+)

C 3 r u n

MENU (-) (+)

C 3 1. 0 0

MENU (-) (+)

CALIBRATION MODE

Left (Regular) Pump Cal.

Left (Regular) Pump Cal.

Right (Decaf) Pump Cal.

Right (Decaf) Pump Cal.

Left (Regular) Water Rate

Left (Regular) Water Rate

DESCRIPTION

Set PRIME-NORMAL-RINSE switch to PRIME position. Press and hold

Regular Dispense Switch until pump stops (20 sec.) Refer to Field Calibration of the Concentrate Pumps.

Enter mL collected from the 20 sec. test above.

Default = 22

Range = 18 - 26mL

Set PRIME-NORMAL-RINSE switch to

PRIME position. Press and hold Decaf

Dispense Switch until pump stops (20 sec.) Refer to Field Calibration of the

Concentrate Pumps.

Enter mL collected from the 20 sec. test above.

Default = 22

Range = 18 - 26mL

Set PRIME-NORMAL-RINSE switch to

RINSE position. Press and hold Regular

Dispense Switch until flow stops (20 sec.) Refer to Field Calibration of the

Concentrate Pumps.

Enter Liters collected from the 20 sec. test above.

Default = 1.00

Range = 0.90 - 1.10 Liters

20 37935.1 052305

CALIBRATING THE DISPENSER (Cont.)

LCD DISPLAY

C 4 r u n

MENU (-) (+)

C 4 1. 0 0

MENU (-) (+)

C 5 0 3 5

MENU (-) (+)

C 6 2 0 0

MENU (-) (+)

C 7 - - -

MENU (-) (+)

L C 0 x x

MENU (-) (+)

CALIBRATION MODE

Right (Decaf) Water Rate

Right (Decaf) Water Rate

Cooler Control Temperature

Pump “OFF” Delay

Reset Factory Defaults

DESCRIPTION

Set PRIME-NORMAL-RINSE switch to

RINSE position. Press and hold Decaf

Dispense Switch until flow stops (20 sec.) Refer to Field Calibration of the

Concentrate Pumps.

Enter Liters collected from the 20 sec. test above.

Default = 1.00

Range = 0.90 - 1.10 Liters

Used to set the target temperature that the Product will be held at.

Default = 35°F

Range = 30° - 40°F

Delays the Pump turn off after a dispense.

Default = 200

Range = 1 - 999 mSec.

Resets all set up values to the Factory

Default setting.

Hold both Increase (+) and Decrease

(-) switch for 10 seconds.

Displays Software Version # -

Exits To Home View After 3 Seconds.

21 37935.1 052305

TROUBLESHOOTING GUIDE

Error Codes

When an error has occurred, all Door LED’s will be flashing. Open the Door to access the LED Display and record the Error Code. Refer to the list of Error Codes below to identify the problem. 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.

LED DISPLAY

E C 0 0 1

MENU (-) (+)

E C 0 0 2

MENU (-) (+)

E C 0 0 3

MENU (-) (+)

E C 0 0 4

MENU (-) (+)

ERROR

Left (Regular) Pump Failed

Right (Decaf) Pump Failed

Heating Time Too Long

Fill Time Too Long

DESCRIPTION/TROUBLESHOOTING

Left Motor or RPM Sensor Failure.

Check motor and RPM sensor wires for shorts or open connections.

Right Motor or RPM Sensor Failure.

Check motor and RPM sensor wires for shorts or open connections.

Tank Heater ON Continuous For More

Than 1 Hour. Check heater wires for open connections.

Fill Valve ON Continuous For More Than

15 Minutes. Water turned OFF. Refill

Valve disconnected. Faulty Valve.

E C 0 0 5

MENU (-) (+)

E C 0 0 6

MENU (-) (+)

Cool Time Too Long

Heat Sink Temp Too High

Cool Temp Sensor Above 40°F For More

Than 4 Hours. Cabinet Door open or faulty seal. Check T.E. Unit wires for shorts or open connections.

Heat Sink Temp Higher Than 190°F.

Air Filter plugged or blocked. Ambient

Temperature too high.

22 37935.1 052305

TROUBLESHOOTING GUIDE (Cont.)

Error Codes (Continued)

LED DISPLAY

E C 0 0 7

ERROR

Tank Temp Sensor Failed

MENU (-) (+)

E C 0 0 8

MENU (-) (+)

E C 0 0 9

Cool Temp Sensor Failed

DESCRIPTION/TROUBLESHOOTING

Sensor Reading Out Of Range (High or Low). Faulty Sensor wiring.

Sensor Reading Out Of Range (High or Low). Faulty Sensor wiring.

Heat Sink Temp Sensor Failed Sensor Reading Out Of Range (High or Low). Faulty Sensor wiring.

MENU (-) (+)

E C 0 1 0

MENU (-) (+)

Switch Board Failure Unable To Communicate With The

Switch Board In The Door. Faulty wiring between the Door and the Main

Control Board.

23 37935.1 052305

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:

50 to 100 ml graduated cylinder, with 1 ml graduations.

1500 to 2000 ml graduated container.

NOTE: You can calibrate either the Concentrate Pump or the Dispenser Flow Rate independently. Simply scroll through the menu screen to the desired section and perform only those steps. (refer to Calibrating the Dis-

penser)

Calibrating the Concentrate Pumps.

Regular Coffee - Concentrate Pump Calibration

1. Open the door of the dispenser and select PROGRAM on the Mode Selector Switch.

2. Depress and Hold the MENU switch for approximately 10 sec. The unit will display “C1 run” when it has entered the Calibration Mode.

3. Select PRIME on the Function Selector Switch.

4. Place a container under the left Dispense Tip and depress the Regular dispense switch until a steady stream of concentrate comes out the tip (5 to 10 seconds).

5. Stop priming and allow the tip to stop dripping. Discard the concentrate collected.

6. Place a 50 ml graduated cylinder under the Left Dispense Tip.

7. Press & Hold the Regular dispense switch. The dispenser will display a 20 second count down timer and then shut the pump OFF automatically. Release the dispense switch.

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

9. Measure the volume of concentrate collected in the graduated cylinder.

The acceptable range for the volume of concentrate collected is 18 - 26 ml

10. If the amount collected is not within the acceptable range, empty the graduated cylinder and repeat STEPS

6 – 9.

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

12. When satisfied with the volume of concentrate collected, press the MENU switch. The current Calibration volume “C1 XX” will be displayed.

13. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 9.

Decaffeinated Coffee - Concentrate Pump Calibration

Depress the MENU switch to display the Decaffeinated Concentrate Pump calibration menu “C2 run”.

Repeat STEPS 3 – 13 above for the right side “Decaf” pump.

Calibrating the Dispenser Flow Rates.

Regular Coffee - Dispenser Flow Rate Calibration

1. Select RINSE on the Function Selector Switch.

2. Press the MENU switch to display the Regular Coffee Flow Rate calibration menu “C3 run”

3. Place a container under Left Dispense Tip and depress the Regular dispense switch until a steady stream of water comes out the tip (5 to 10 seconds).

(Continued Next Page)

24 37935.1 052305

Field Calibration of the Concentrate Pumps & Dispenser Flow Rates

(Continued)

4. Stop dispensing and allow the tip to stop dripping. Discard the water collected

5. Place a 1500 to 2000 ml graduated container under Left Dispense Tip.

6. Press & Hold the Regular dispense switch. The dispenser will display a 20 second count down timer and then stop dispensing automatically. Release the dispense switch.

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

8. Measure the volume of water collected in the graduated container.

The acceptable range for the volume of water collected is .90 - 1.10 liters

9. If the amount of water collected is not within the acceptable range, empty the graduated container and repeat STEPS 5 – 8.

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

11. When satisfied with the volume of water collected, press the MENU switch. The current Water Calibration volume “C3 XX” will be displayed.

12. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 8.

Decaffeinated Coffee - Dispenser Flow Rate Calibration

Depress the MENU switch to display the Decaffeinated Coffee Flow Rate calibration menu “C4 run”.

Repeat STEPS 3 – 12 above for the right side “Decaf” pump.

Field Calibrating the Empty Product Warning

The dispenser will automatically turn on the Regular or Decaf “REFILL LED”, see Operating Controls and Interface, when the corresponding container 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, in some areas the hardness of the local water supply may effect this reading. If the Refill message doesn’t come on when the container is empty or the message comes on too early and there is still concentrate left in the container, use the following procedure to find the correct Empty Product Threshold.

Calibrating The Empty Product Threshold

1. Open the dispenser door to access the digital programming module with LED display and set the Function

Switch to the “Rinse” position. Leave the door open to view the LED display.

2. Place a large container under the dispenser tip, then activate and hold the Regular Coffee dispense switch.

3. Hold the dispense switch long enough to rinse all the concentrate out of the mix chamber and for the Conductance reading to stabilize and stop dropping.

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

5. Repeat steps 2, 3 & 4 for the Decaf Coffee dispenser.

6. Add 100 points to the larger of the Regular or Decaf conductance value. This is the new Empty Product threshold value for your dispenser.

7. Enter this new value into the Empty Product Alarm threshold position “P8 XXX”, see Programming the

Dispenser.

25 37935.1 052305

SCHEMATIC WIRING DIAGRAM LCC-2 LP

GRN

L1

BLK-16

LIMIT THERM.

BLK-16 BLU/BLK-16

TANK HEATER

WHT-16

N

LEFT VALVE

SOL

RIGHT VALVE

SOL

HOT WATER

SOL

INLET VALVE

WHT/BLK-18

SOL

LEFT PUMP

RPM SENSOR

LEFT

PUMP

M

RED

BLK

GRN

BRN/BLK-18

BRN/WHT-18

WHT/BLU-22

WHT/BLK-22

TAN-22

RIGHT PUMP

RPM SENSOR

RIGHT

PUMP

M

RED

BLK

GRN

WHT/RED-18

RED/BLK-18

WHT/BLU-22

WHT/BLK-22

RED-22

SWITCH & LED

BOARD

J2-1

J2-4

120 VOLTS AC - 2 WIRE

SINGLE PHASE, 60 HZ

37921.0000B 08/05 © 2004 Bunn-O-Matic Corporation

J4-1

BRN/BLK-18

RED-18

ORN-18

YEL-18

WHT/BLK-18

WHT-18

BLK-18

J4-5

J4-10

J2-1

J2-5

J2-8

RED-18

GRAY-18

BLK-18

RED-18

GRAY-18

WHT-18

BRN/BLK-18

WHT/BLU-22

TAN-22

WHT/BLU-22

RED/BLK-18

BRN/WHT-18

WHT/BLK-22

RED-22

WHT/BLK-22

WHT/RED-18

J10-1

J10-4

WHT/ORN-22

PINK-22

ORN-22

GRN-22

J6-1

MAIN

CONTROL

BOARD

J6-5

J6-10

J6-16

J9-1

J9-5

RED-18

BLK-18

WHT/RED-22

BLU-22

YEL-22

RED-18

BLK-18

WHT/BLK-22

WHT/BLU-22

WHT/YEL-22

J9-12

J7-1

J7-4

J8-1

J8-5

J8-10

RED-20

BRN-20

VIO-22

BLK-22

WHT/VIO-22

RED-20

BRN-20

GRAY-22

WHT/BLK-22

WHT/GRAY-22

J8-14

RED-18

RED-18

GRAY-18

GRAY-18

WHT-18

BLK-18

+V

+V

-V

-V

GND

N/L2

L1

BLK

WHT

POWER SUPPLY

24 VDC, 180 WATTS t°

TANK

WHT/RED-22

WHT/BLK-22

RED

BLK

YEL-22

WHT/YEL-22

BLU-22

WHT/BLU-22

Heat Sink

Thermistor

Cold Shoe

Thermistor

PRIME

NORMAL

RINSE

PROGRAM

NIGHT

RUN

LEFT

CONDUCTANCE

RED-18

RED-18

BLK-18

BLK-18

Heat Sink Fan t°

THERMOELECTRICS t°

RIGHT

CONDUCTANCE

26 37935.1 082205

SCHEMATIC WIRING DIAGRAM LCC-2A LP

GRN

L1 N

BLK-16

LIMIT

THERMOSTAT

BLK-16 BLU/BLK-16

THERMAL FUSE TANK HEATER

240 V 3000 W

THERMAL FUSE

WHT-16

LEFT PUMP

RPM SENSOR

LEFT

PUMP

M

LEFT VALVE

SOL

RIGHT VALVE

SOL

HOT WATER

SOL

INLET VALVE

SOL

WHT/BLK-18

RED

BLK

GRN

BRN/BLK-18

BRN/WHT-18

WHT/BLU-22

WHT/BLK-22

TAN-22

RIGHT PUMP

RPM SENSOR

RIGHT

PUMP

M

RED

BLK

GRN

WHT/RED-18

RED/BLK-18

WHT/BLU-22

WHT/BLK-22

RED-22

J2-1

SWITCH & LED

BOARD

J2-4

CAPACITOR .01uF

CAPACITOR .01uF

EMI

FILTER

J4-1

BRN/BLK-18

RED-18

ORN-18

YEL-18 J4-5

WHT/BLK-18

WHT-18

BLK-18 J4-10

J2-1

J2-5

J2-8

RED-18

GRAY-18

BLK-18

RED-18

GRAY-18

WHT-18

J10-1

J10-4

WHT/ORN-22

PINK-22

ORN-22

GRN-22

J6-1

BRN/BLK-18

WHT/BLU-22

TAN-22

WHT/BLU-22

RED/BLK-18

J6-5

BRN/WHT-18

WHT/BLK-22

RED-22

WHT/BLK-22

WHT/RED-18

J6-10

J6-16

J1-1

J1-5

MAIN

CONTROL

BOARD

J9-1

J9-5

RED-18

BLK-18

WHT/RED-22

BLU-22

YEL-22

RED-18

BLK-18

WHT/BLK-22

WHT/BLU-22

WHT/YEL-22

J9-12

J8-1

J8-5

J8-10

J8-14

RED-20

BRN-20

VIO-22

BLK-22

WHT/VIO-22

RED-20

BRN-20

GRAY-22

WHT/BLK-22

WHT/GRAY-22

J7-1

J7-4

J11-1

J11-5

PRIME

NORMAL

RINSE

PROGRAM

NIGHT

RUN

RED-18

RED-18

GRAY-18

GRAY-18

WHT-18

BLK-18

BLK

WHT

YEL-22

WHT/YEL-22

BLU-22

WHT/BLU-22

+V

+V

-V

-V

GND

N/L2

L1

POWER SUPPLY

24 VDC, 150 WATTS

WHT/RED-22

WHT/BLK-22 t°

TANK

RED

BLK

Heat Sink

Thermistor

Cold Shoe

Thermistor

RED-18

RED-18

BLK-18

BLK-18

Heat Sink Fan

THERMOELECTRICS t° t°

LEFT

CONDUCTANCE

RIGHT

CONDUCTANCE

230 VOLTS AC - 2 WIRE

SINGLE PHASE, 50 HZ

37921.0001B 08/05 © 2005 Bunn-O-Matic Corporation

27 37935.1 082205

BLK-16

L1 L2

RED-16

WHT-16

MASTER ON/OFF

SWITCH

BLK-16

LIMIT THERM.

BLK-16

SCHEMATIC WIRING DIAGRAM

LCC-2 LP

GRN

WHT-16

BLU/BLK-16

TANK HEATER

240 V 3000 W

WHT-16

N (NOT USED)

LEFT VALVE

SOL

RIGHT VALVE

SOL

HOT WATER

SOL

INLET VALVE

WHT/BLK-18

SOL

LEFT PUMP

RPM SENSOR

LEFT

PUMP

M

RED

BLK

GRN

BRN/BLK-18

BRN/WHT-18

WHT/BLU-22

WHT/BLK-22

TAN-22

RIGHT PUMP

RPM SENSOR

RIGHT

PUMP

M

RED

BLK

GRN

WHT/RED-18

RED/BLK-18

WHT/BLU-22

WHT/BLK-22

RED-22

SWITCH & LED

BOARD

(37561-0000)

J2-1

J2-4

J4-1

BRN/BLK-18

RED-18

ORN-18

YEL-18

WHT/BLK-18

WHT-18

BLK-18

J4-5

J4-10

J2-1

J2-5

J2-8

RED-18

GRAY-18

BLK-18

RED-18

GRAY-18

WHT-18

J6-1

BRN/BLK-18

WHT/BLU-22

TAN-22

WHT/BLU-22

RED/BLK-18

J6-5

J6-10

BRN/WHT-18

WHT/BLK-22

RED-22

WHT/BLK-22

WHT/RED-18

J6-16

J1-1

J1-5

J7-1

J7-4

J10-1

J10-4

WHT/ORN-22

PINK-22

ORN-22

GRN-22

MAIN

CONTROL

BOARD

(37295-0000)

J9-1

J9-5

RED-18

BLK-18

WHT/RED-22

BLU-22

YEL-22

RED-18

BLK-18

WHT/BLK-22

WHT/BLU-22

WHT/YEL-22

J9-12

J8-1

J8-5

RED-20

BRN-20

VIO-22

BLK-22

WHT/VIO-22

J8-10

RED-20

BRN-20

GRAY-22

WHT/BLK-22

WHT/GRAY-22

J8-14

J11-1

J11-5

PRIME

NORMAL

RINSE

PROGRAM

NIGHT

RUN

RED-18

RED-18

GRAY-18

GRAY-18

WHT-18

BLK-18

+V

+V

-V

-V

GND

N/L2

L1

POWER SUPPLY

24VDC, 150 WATTS

BLK

WHT t°

TANK

WHT/RED-22

WHT/BLK-22

YEL-22

WHT/YEL-22

BLU-22

WHT/BLU-22

RED

BLK

Heat Sink

Thermistor

Cold Shoe

Thermistor

RED-18

RED-18

BLK-18

BLK-18

Heat Sink Fan

THERMOELECTRICS t° t°

LEFT

CONDUCTANCE

RIGHT

CONDUCTANCE

208-240 VOLTS AC

2 WIRE + GRD

SINGLE PHASE, 50/60 HZ

37921.0004A 08/06 © 2006 Bunn-O-Matic Corporation

28 37935.1 082906