Bunn LCA-2 IC User Manual
LCA-2 IC
INSTALLATION & OPERATING MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
38059.0000D 09/06 ©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.
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INTRODUCTION
The Liquid Coffee Ambient Iced Coffee Dispenser (LCA-2 IC) delivers two types of coffee. 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.
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
Setting Dispenser Flow Rate ........................................................................................................6
Selecting the Correct Pump Tubing .............................................................................................7
Operating Controls & Interface ....................................................................................................8
Initial Power-Up ...........................................................................................................................9
Rinse Alarm Feature ..................................................................................................................10
BIB Empty Lockout Feature .......................................................................................................10
Programming the Dispenser .....................................................................................................11
Loading the Concentrate ...........................................................................................................16
Priming the Concentrate Lines ..................................................................................................16
Operating the Pull & Hold Dispenser .........................................................................................17
Cleaning & Preventive Maintenance ..........................................................................................18
Replacing the Pump Tubing.......................................................................................................19
Troubleshooting ........................................................................................................................20
Field Calibration of the Concentrate Pumps ...............................................................................24
Dispenser Flow Rate Calibration ................................................................................................25
Field Calibrating the Empty BIB Warning ...................................................................................25
Schematic Wiring Diagrams ......................................................................................................26
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38059 092706
USER NOTICES
Carefully read and follow all notices on the equipment and in this manual. They were written for your protec-
tion. All notices are to be kept in good condition. Replace any unreadable or damaged labels.
00656.0000
00986.0002
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ELECTRICAL REQUIREMENTS
CAUTION: The dispenser must remain disconnected from the power source until specified in Electrical Hook-
Up.
The LCA-2 IC dispenser is supplied with a 120-volt / 15 Amp cord set and requires 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.
PLUMBING REQUIREMENTS
The dispenser may be connected to a cold water system with operating pressure between 20 and 90 psi (138 and
620 kPa) from a 1/2” 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 3/8” flare. Dispensers set up to deliver to 1.8 Oz./sec. (53.2 ml/sec) per dispense tip, 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 3/8” tubing from the 1/2” 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.
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INITIAL SET-UP
NOTE: The LCA-2 IC weighs approximately 70 lbs. (31.8 kg). If necessary, use more than one person when
lifting or moving the dispenser.
1. Locate and remove the information packets and tube kits from top of packaging and set aside.
2. Remove foam packing and cut around the bottom of box.
3. Remove the box and the rest of the foam packing.
4. Open the dispenser door and remove the drip tray and the lower splash guard panel.
5. Set dispenser on the counter where it is to be used. CAUTION: DO NOT LIFT ON THE DOOR.
6. Confirm the dispenser is level on the counter.
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 Power-Up.
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, on bottom right side of the dispenser.
3. Turn on the water supply and check for leaks.
DISPENSER FLOW RATE
The dispenser comes from the factory with flow rate set at 1.8 oz./sec (53.2 ml/sec).
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SELECTING THE CORRECT PUMP TUBING
There are two pump tube sizes available for use with this dispenser. Look up the recommended tube size for the
mix ratio of your concentrate, refer to the Tube Selection Chart.
TUBE SELECTION CHART
Dispense Concentrate Ratios
Rate 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
1.8 Oz/sec. 3/16” I.D. TUBING 1/8” I.D. TUBING
(53 ml/sec.)
Example:
For a Dispenser Flow Rate of 1.8 Oz./sec (53 mL/sec) and a Mix Ratio of 60:1 – use 1/8” I.D. Tubing.
Tube kits can be purchased from BUNN-O-MATIC.
Part # 34727.1000 for 3/16” I.D. Tubing or #34728.1000 for 1/8” I.D. Tubing.
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 it and 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 number M2548.1000) 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 pump.
9. Prime the pumps. Refer to Priming the Concentrate Lines section.
Thumbscrew
Tension
Screw
Remove Retaining Plate Release Spring Tension Remove Tubing
Tension Screw
Tube Clamp
Install New Tubing Completed Installation
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2.0”
Lubricate between arrows
Lubricate New Tube
2.0”
38059 050605
OPERATING CONTROLS AND INTERFACE
BUNN ICED COFFEE
AMBIENT UNIT
1. Dispense Switches: Pull and Hold to dispense product.
2. Stop Switch: Momentary switch stops all dispense functions.
3. Alternate Portion Control Switch: Momentarily pushed to select the Alternate Portion Control Volume.
4. Function Selector Switch: Allows the user to set the dispenser into different dispensing modes.
a. Rinse: Dispenses 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).
5. Mode Selector Switch: Allows the user to set the dispenser into different operating modes.
a. Run: Normal operating position.
b. Off: Turns off all functions.
WARNING - The OFF Mode does not remove AC power from the dispenser. Disconnect power source before
servicing the dispenser
c. Night: Anti-pilfering mode that disables dispensing.
6. Door Interlock Switch: Unit will not dispense product if the door is open.
7. Power LED: Red - illuminates when AC power is applied to dispenser.
8. Portion LED: Yellow - illuminates when the portion dispense option has been selected, (5 second delay).
9. Rinse LED: Yellow - illuminates when the optional preset rinse alarm time has elapsed.
10. Left Refill LED: Yellow - illuminates when the Left Concentrate BIB needs replaced.
11. Right Refill LED: Yellow - illuminates when the Right Concentrate BIB needs replaced.
12. Programming Keypad: Used in conjunction with the LCD display to program and calibrate the dispenser to
customer specific requirements. (Located behind the splash guard panel)
13. LCD Display: Displays programming menus and fault messages. (Located behind the splash guard panel)
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