Bunn LCA 2 User Manual

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INSTALLATION & OPERATING MANUAL  
BUNN-O-MATIC CORPORATION  
POST OFFICE BOX 3227  
SPRINGFIELD, ILLINOIS 62708-3227  
PHONE: (217) 529-6601 FAX: (217) 529-6644  
and the quickest way to obtain the catalog. Contact Bunn-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.  
34766.0000J 01/07 ©2002 Bunn-O-Matic Corporation  
INTRODUCTION  
The Liquid Coffee Ambient Dispenser (LCA-2) and the Liquid Coffee Chilled Dispenser (LCC-2) delivers two  
types of coffee plus hot water. The dispenser can be set up for continuous draw (by the cup) for self-serve ap-  
plications, or portion-control to fill carafes and decanters for wait staff. Product Flavor Profile is extended with  
chilled product storage cabinet featured in the LCC-2.  
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.  
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., comply with the applicable  
Plumbing /SanitationCode.  
00656.0000  
00986.0002  
Optional Field Wiring  
To reduce the risk of electric shock,  
do not remove or open cover.  
208-240 V, 25.8 A, 6200 W  
1PH, 2-Wire + GND, 60HZ  
or  
No user-serviceable parts inside.  
Authorized service personnel only.  
Disconnect power before servicing.  
120/208-240 V, 25.8 A, 6200 W  
1PH, 3-Wire + GND, 60HZ  
37881.0000  
28181.0003  
11646.0002  
34766 010407  
3
ELECTRICAL REQUIREMENTS  
CAUTION: The dispenser must remain disconnected from the power source until specified in Electrical Hook-  
Up.  
TheLCA-2andLCC-2dispensersaresuppliedwitha120-volt/15Ampcordsetandrequirea2-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 LCA-2C and LCC-2C dispensers are supplied with a 120-volt / 20 Amp cord set and require a 2-wire,  
grounded, individual branch circuit rated for 120 volts AC, 20 amp, single phase, 60Hz. The mating connector  
must be a NEMA 5-20R.  
These dispensers can be Field Wired for 208 or 240 volt applications. This requires a 2 or 3-wire, grounded,  
individual branch circuit rated for 208/240 volts AC, 30 amp, single phase, 60 Hz.  
NOTE: The internal terminal block must be rewired for 208/240 applications, (see Optional Field Wiring  
Diagram).  
FIELD WIRING TERMINAL BLOCK DIAGRAM  
Models without Master ON/OFF Switch  
HEATER RED  
HEATER RED  
10A. FUSE - WHITE  
10A. FUSE - BLACK  
HEATER RED  
10A. FUSE - WHITE  
10A. FUSE - BLACK  
10A. FUSE - WHITE  
120V A.C.  
208 or  
240V A.C.  
120V A.C.  
208 or  
240V A.C.  
120V A.C.  
10A. FUSE - BLACK  
LIMIT SW. - BLACK  
Fig. 1  
Fig. 2  
Fig. 3  
LIMIT SW. - BLACK  
LIMIT SW. - BLACK  
For all 208 - 240 Volt Connections: Use No. 10 AWG Wires suitable for 90°C (194 °F)  
1. Unit shipped per Fig. 1, wired for 120V A.C./2-Wire.  
2. For 208 - 240V A.C./2-Wire per Fig. 2: Move both the Red-Heater wire and the White-Fuse wire to the Top Red Terminal as shown.  
3. For 120/208 - 240V A.C./3-Wire per Fig. 3: Move the Red Heater wire to the Top Red Terminal as shown.  
FIELD WIRING TERMINAL BLOCK DIAGRAM  
Models with Master ON/OFF Switch  
RED  
RED  
RED  
120V A.C.  
TO MASTER  
TO MASTER  
TO MASTER  
208 or  
208 or  
240V A.C.  
120V A.C.  
120V A.C.  
ON/OFF  
SWITCH  
ON/OFF  
SWITCH  
ON/OFF  
SWITCH  
240V A.C.  
BLACK  
BLACK  
BLACK  
Fig. 1  
Fig. 2  
Fig. 3  
For all 208 - 240 Volt Connections: Use No. 10 AWG Wires suitable for 90°C (194°F)  
1. Unit shipped per Fig. 1, wired for 120V A.C./2-Wire.  
2. For 208 - 240V A.C./2-Wire per Fig. 2.  
3. For 120/208 - 240V A.C./3-Wire per Fig. 3.  
34766 010407  
4
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. 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. Dispensers set up to deliver 2.6 Oz./sec. (76.9 lpm) per dispense tip, require a water supply source that  
can deliver a minimum of 2.4 gpm (9.2 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. 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., you must comply with the applicable  
Plumbing/Sanitation Code for your area.  
INITIAL SET-UP  
NOTE: The LCC-2 (Chilled Unit) weighs approximately 80 lbs. (36.3 kg) and the LCA-2 (Ambient Unit) 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 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, on bottom right side of the dispenser.  
3. Turn on the water supply and check for leaks.  
34766 010407  
5
SETTING DISPENSER FLOW RATE  
The dispenser comes from the factory with flow restrictors in the mix chambers. With the restrictors in place  
the dispense rate is about 1.8 oz./sec (53.2 ml/sec) and is used primarily for cup at a time dispensing. The  
flow restrictors can be removed to increase the dispense rate to about 2.5 oz./sec (74 ml/sec) for larger volume  
dispensing (airpots, carafes, etc.).  
NOTE: The hot water FlowRate is fixed at approximately 1.7 oz/sec. and can not be adjusted.  
Removing the restrictors:  
1. Disconnect the dispenser from the AC power source.  
2. Open the Product Cabinet door.  
3. Remove the concentrate tube, vent line and grommet from mix chamber ports in side the product cabinet.  
4. Remove the two screws that fasten mix chamber to the control panel.  
5. Gently pull mix chamber away from dispenser to expose water line connection, (you may have to rotate it  
slightly).  
6. Disconnect FlavorGard™ sensor wire and hot water tubing from the mix chamber.  
7. Remove the flow restrictor from the inlet to the mix chamber.  
8. Reconnect FlavorGard™ sensor wire and hot water tubing to the mix chamber.  
9. Place mix chamber back into position in the dispenser, (you may have to rotate it slightly) and secure it with  
the two screws  
10. Reposition the grommet, vent line and pump tubing onto the mix chamber ports.  
Caution: Failure to properly replace and secure any of the above components may result leaks and/or cause  
damage to the dispenser.  
IfyouchangedtheDispenserFlowRate,youwillneedtoreprogramthedispensertothenewrate,seeProgramming  
the Dispenser.  
CAUTION: Failure to reprogram the Dispenser Flow Rates will result in inaccurate Mix Ratios.  
Reprogramming the Dispenser Flow Rate:  
1. Remove the lower splash guard panel and locate the Programming module.  
2. Use the Down Arrow key to enter into the programming function and scroll through the menu’s to the “CAL  
LEFT SIDE?” menu and select “YES”.  
3. Scroll down to the “CAL LF WTR VOL” menu  
4. Use the (+) & (-) keys to enter a volume of 50 Oz. (1478 mL). This will recalibrate the Left dispenser to the  
new rate.  
5. Scroll down to the “CAL RT WTR VOL” menu  
6. Use the (+) & (-) keys to enter a volume of 50 Oz. (1478 mL). This will recalibrate the Right dispenser to the  
new rate.  
7. Select “Exit” to leave the programming menu.  
Note: The default volume of 50 Oz (1478 mL), is the typical Cal Volume for a 2.5 Oz/sec Flow Rate Test, see Field  
Calibration of the Concentrate Pumps / Dispenser Flow Rates.  
34766 120105  
6
SELECTING THE CORRECT PUMP TUBING  
There are two pump tube sizes available for use with this dispenser. To determine the correct tubing for you  
application, first determine the dispenser flow rate you intend to use, refer to Setting Dispenser Flow Rate. Then  
look up the recommended tube size for the mix ratio of your concentrate, refer to the Tube Selection Chart.  
TUBE SELECTION CHART  
Dispense  
Rate  
1.8 Oz/sec. 3/16” I.D. TUBING  
(53 ml/sec.)  
Concentrate Ratios  
25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100  
1/8” I.D. TUBING  
2.5 Oz/sec. 3/16” I.D. TUBING  
(74 ml/sec.)  
1/8” I.D. TUBING  
Examples:  
1. For a Dispenser Flow Rate of 2.5 Oz./sec (74 mL/sec) and a Mix Ratio of 35:1 – use 3/16” I.D. Tubing.  
2. 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 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 pump.  
9. Prime the pumps. Refer to Priming the Concentrate Lines section.  
Thumbscrew  
2.0”  
2.0”  
Tension  
Screw  
Lubricate between arrows  
Remove Retaining Plate Release Spring Tension  
Remove Tubing  
Lubricate New Tube  
Tension Screw  
Tube Clamp  
Install New Tubing  
Completed Installation  
34766 112502  
7
OPERATING CONTROLS AND INTERFACE  
1a. Dispense Handles: Pull and Hold to dispense product.  
1b. Dispense Switches: Push and Release to dispense product for Portion Control Models.  
2. Stop Switch: Momentary switch stops all dispense functions.  
3a. Hot Water Switch: Push and Hold switch to dispense hot water from the center dispense tip.  
3b. Push and Release switch for Portion Control Models.  
4. Alternate Portion Control Switch: Momentarily pushed to select the Alternate Portion Control Volume #2.  
5. 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. Prime: Dispenses concentrates only – Primes the concentrate pump.  
c. Normal: Normal dispense mode - Dispenses mixed product (concentrate and water).  
6. 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 including tank heater and chiller.  
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, but keeps the tank heater and chiller (if applicable)  
operational.  
7. Door Interlock Switch: Unit will not dispense product if the door is open.  
8. Power LED: Red - illuminates when AC power is applied to dispenser.  
9. Ready LED: Green - illuminates when the water is at the preset ready temperature.  
10. Portion LED: Yellow - illuminates when the portion dispense option has been selected, (5 second delay).  
11. Rinse LED: Yellow - illuminates when the optional preset rinse alarm time has elapsed.  
12. Left Refill LED: Yellow - illuminates when the Left Concentrate BIB needs replaced.  
13. Right Refill LED: Yellow - illuminates when the Right Concentrate BIB needs replaced.  
14. 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)  
15. LCD Display: Displays programming menus and fault messages. (Located behind the splash guard panel)  
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10  
11  
13  
2
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12  
15  
14  
BUNN ICED COFFEE  
AMBIENT UNIT  
3
34766 120105  
8
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.  
Note: The time required to heat the water initially will vary depending on the AC Power supplied to the  
dispenser.  
While the tank is heating, the dispenser may be readied for use as described in Programming Functions & Basic  
1
1
3
4
34766 112502  
9
FlavorGard™ Feature  
FlavorGard™ is a patented feed back control loop that monitors the mixed product and adjusts the concentrate  
delivery rate to maintain a consistent mix profile, i.e. Flavor Profile. The system consists of a conductance probe  
mounted in the final stages of the mixing chamber, a metering pump with RPM sensor and a digital controller.  
Once you have completed the installation of the dispenser, entered the desired mix ratio for your concentrate,  
dispensed several cups of the mixed product, and are satisfied with the Flavor and Strength being delivered,  
simply enable FlavorGard™, (refer to FlavorGard™ in Programming the Dispenser).  
The dispenser will automatically calibrate the system to all the factors that make up your particular mix profile,  
(e.g. water source, filtration system, Brand of concentrate and mix ratio selected, etc.).  
NOTE: It is very important that you have dispensed enough product to insure that the dispenser is fully functional  
and you are satisfied with the Flavor Profile of the mix product before enabling FlavorGard™.  
Once FlavorGard™ is enabled, the dispenser will continuously monitor the mix product as it is being dispensed  
and adjust the metering pump speed to maintain a consistent mixed product, thus eliminating factors such as  
(settling of the concentrate, tube wear, viscosity changes, liming, etc.).  
The system is designed to work with in the range of variations that can be caused by these factors. The factory  
preset range is (+/- 10 %) and is adjustable to a Max of (+/- 15%). This insures that the FlavorGard™ system is  
not responding to factors that cannot be corrected by minor adjustments to the speed of the metering pump,  
(e.g. kinked hoses, low water pressure, severely worn tubes, empty BIB’s, etc).  
NOTE: Changes to Concentrate Ratios or Dispenser Flow Rates will automatically disable FlavorGard™.  
You will need to re-enable FlavorGard™, once you are satisfied with the new Flavor Profile.  
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, Disabled, Warning  
Only and Warning with Brew Lockout, see chart for details.  
Alarm Level Selected  
Disabled  
Warning Only  
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.  
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 Lockout and  
not continue to serve product once the selected time interval has elapsed.  
Warning w/ Brew Lockout  
NOTE: The time interval between Rinses is adjustable from 8 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.  
34766 050103  
10  
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.  
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.  
1
5
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 flash the Right or Left “REFILL LED” corresponding to the empty BIB. Once the BIB has  
been replaced, PRIME the concentrate line (refer to Priming the Concentrate Lines) and then dispense mixed  
product until the “REFILL LED” goes out. NOTE: If the dispenser fails to clear the BIB Empty Lockout, 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.  
34766 042304  
11  
PROGRAMMING THE DISPENSER  
Remove the lower splash guard assembly to access the digital programming module with LCD display.  
Press the Down Arrow key to inter the programming menu.  
Use the Up and Down Arrow keys 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.  
MENU SCREEN  
ACTION  
DESCRIPTION  
TANK TEMP XXX  
AMBIENT UNIT  
UsetheDownArrowKeytoenter Normal Display for LCA models, (No Chiller)  
Programming Functions  
TANK TEMP XXX  
CABINET TEMP XX  
UsetheDownArrowKeytoenter Normal Display for LCC models, (with Chiller)  
Programming Functions  
L DISPENSE RATIO  
(-) 35:1 (+)  
Use the (+) or (-) buttons to Enter the desired Mix Ratio for the concentrate  
adjust the Mix Ratio  
used in the Left dispenser. [20:1 - 100:1]  
SET LF TUBE SIZE  
1/8 EXIT 3/16  
Select tube size.  
Enter Pump Tube Size to be used in the Left  
metering pump, (see Tube Selection Chart)  
R DISPENSE RATIO  
(-) 35:1 (+)  
Use the (+) or (-) buttons to Enter the desired Mix Ratio for the concentrate  
adjust the Mix Ratio  
used in the Right dispenser. [20:1 - 100:1]  
SET RT TUBE SIZE  
1/8 EXIT 3/16  
Select tube size.  
Enter Pump Tube Size to be used in the Right  
metering pump, (see Tube Selection Chart)  
FLAVOR GUARD ?  
NO EXIT YES  
Select(YES)toactivate. Select Select Yes, if you are ready to calibrate the Flavor  
(NO) to deactivate.  
Guard sensor. Select NO, if you do not wish to  
use this feature, (see Flavor Guard)  
If NO - go to LF DISP VOLUME menu.  
LF TASTE OK ?  
NO EXIT YES  
Select (YES) or (NO)  
Select YES, if you have dispensed several cups  
and are satisfied with the Left dispenser flavor.  
Select NO, if you have not run taste test.  
FIND LF TARGET  
PULL DISPENSE  
Place a 16 Oz. (500 mL) cup Calibrates the Left FlavorGard™ sensor to the  
undertheLeftdispensetip,then current MixProfile. The dispenser will shut OFF  
activate the Left dispenser  
automatically when finished.  
RT TASTE OK ?  
NO EXIT YES  
Select (YES) or (NO)  
Select YES, if you have dispensed several cups  
and are satisfied with the Right dispenser flavor.  
Select NO, if you have not run taste test.  
FIND RT TARGET  
PULL DISPENSE  
Place a 16 Oz. (500 mL) cup Calibrates the Right FlavorGard™ sensor to the  
under the Right dispense current MixProfile. The dispenser will shut OFF  
tip, then activate the Right automatically when finished.  
dispenser  
34766 042304  
12  
MENU SCREEN  
ACTION  
DESCRIPTION  
LOCK FLAVOR ?  
EXIT YES  
Select (YES) or (EXIT)  
Select YES, to Lock In sensor calibration. NOTE:  
Display will return to “Find LF Target” if sensor  
calibration is out of range.  
FLAVORS LOCKED  
EXIT  
NONE  
Confirmsthatsensorcalibrationwasinrangeand  
accepted. Scroll down to continue.  
Portion Control Settings for Pull and Hold Dispensers  
For Portion Control Dispensers (LCA-2 PC, LCA-2C PC, LCA-2A PC) go to Full Time Portion Control Settings  
LF DISP VOLUME  
(-) 4.0oz (+)  
Use the (+) or (-) buttons  
to adjust the Left portion  
volume  
Set the volume to be dispensed during a Left  
Portion controlled dispense to: [0 - 640 Oz.] or  
[0 - 18.93L]  
RT DISP VOLUME  
(-) 4.0oz (+)  
Use the (+) or (-) buttons  
to adjust the Right portion  
volume  
Set the volume to be dispensed during a Right  
Portion controlled dispense to: [0 - 640 Oz.] or  
[0 - 18.93L]  
Full Time Portion Control Settings  
LF DISP VOLUME 1  
(-) 4.0oz (+)  
Use the (+) or (-) buttons  
to adjust the Normal Left  
volume  
Set the desired portion control volume to be  
dispensed during a Normal Left dispense to: [0  
- 640 Oz.] or [0 - 18.93L]  
LF DISP VOLUME 2  
(-) 0.0oz (+)  
Use the (+) or (-) buttons  
to adjust the Alternate Left  
volume  
Set the desired portion control volume to be  
dispensed during a Alternate Left dispense to:  
[0 - 640 Oz.] or [0 - 18.93L]  
RT DISP VOLUME 1  
(-) 4.0oz (+)  
Use the (+) or (-) buttons  
to adjust the Normal Right  
volume  
Set the desired portion control volume to be  
dispensed during a Normal Right dispense to:  
[0 - 640 Oz.] or [0 - 18.93L]  
RT DISP VOLUME 2  
(-) 0.0oz (+)  
Use the (+) or (-) buttons to  
adjust the Alternate Right  
volume  
Set the desired portion control volume to be  
dispensed during a Alternate Right dispense to:  
[0 - 640 Oz.] or [0 - 18.93L]  
WATER DISP VOL 1  
(-) 0.0oz (+)  
Use the (+) or (-) buttons to  
adjust the Normal Hot Water  
volume  
Set the desired portion control volume to be  
dispensed during a Normal Hot Water dispense:  
[0 - 640 Oz.] or [0 - 18.93L]  
WATER DISP VOL 2  
(-) 0.0oz (+)  
Use the (+) or (-) buttons to  
adjusttheAlternateHotWater  
volume  
Set the desired portion control volume to be  
dispensedduringaAlternateHotWaterdispense:  
[0 - 640 Oz.] or [0 - 18.93L]  
34766 120105  
13  
MENU SCREEN  
ACTION  
DESCRIPTION  
TANK TEMP 180  
(-) EXIT (+)  
Use the (+) or (-) buttons to Sets the water Tank temperature [120 - 200°F]  
adjust the target Temp. or [49 - 93°C]  
READY TEMP 175  
(-) EXIT (+)  
Use the (+) or (-) buttons to Sets the hot water Ready temperature. Typically  
adjust the target Temp. set to the minimum desired dispense temp.  
CABINET TEMP 65  
(-) EXIT (+)  
Use the (+) or (-) buttons to LCC Models Only: Sets the Chilled Cabinet target  
adjust the target Temp. temperature [50 - 75°F] or [4 - 24°C]  
LF PRODUCT DISP  
.0GAL RESET?  
Select (RESET) to clear total SelectingResetwillcleartheCurrentaccumulated  
volumeofconcentratedispensedthroughtheLeft  
dispenser. Gal (Liters)  
LF PRODUCT DISP  
.0GAL  
NONE  
Displays the Total accumulated volume of  
concentratedispensedthroughtheLeftdispenser.  
Not Re-settable. Gal (Liters)  
RT PRODUCT DISP  
.0GAL RESET?  
Select (RESET) to clear total SelectingResetwillcleartheCurrentaccumulated  
volume of concentrate dispensed through the  
Right dispenser. Gal (Liters)  
RT PRODUCT DISP  
.0GAL  
NONE  
Displays the Total accumulated volume of  
concentrate dispensed through the Right  
dispenser. Not Re-Settable. Gal (Liters)  
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.  
ENTER PASSWORD  
(-) (+)  
Use the (+) or (-) buttons to Enter the access Code to view the remaining  
enter password. functions. Factory Default = 0.  
0
SET PASSWORD ?  
(-) (+)  
Use the (+) or (-) buttons to Enter your own Code to prevent access to the  
0
change the password.  
remaining functions. [0 to 9999]  
SELECT UNITS  
ENG EXIT METRIC  
Select the preferred units  
Usedtoselectthepreferredunitsofmeasurement.  
(Oz., Gal, deg F) or (mL, L, deg C)  
CHILLED UNIT ?  
NO EXIT YES  
Select (YES) or (NO)  
Select (YES) or (NO)  
LCA Models without Chiller select (NO)  
LCC Models with Chiller select (YES)  
RINSE ALARM ?  
NO EXIT YES  
Selecting YeswillenabletheRinseAlarmfunction,  
(see Rinse Alarm)  
If NO - go to BIB EMPTY LOCKOUT menu.  
34766 120105  
14  
MENU SCREEN  
ACTION  
DESCRIPTION  
Use the (+) or (-) buttons to  
adjust Rinse Alarm delay  
Enter the desired time between required Rinse  
Cycles in hours, [8 - 24 hrs.]  
RINSE TIME ?  
(-) 12 Hrs (+)  
Select (YES) to enable  
Select YES to Lockout dispensing until the Rinse  
Alarm has been cleared. Default is NO  
RINSE LOCKOUT ?  
NO EXIT YES  
Select (YES) to enable  
Select YES to Lockout dispensing until the  
Concentrate BIB has been replaced. Default is  
NO  
BIB EMPTY LOCKOUT  
NO EXIT YES  
BREW LOCKOUT ?  
NO EXIT YES  
Select (YES) to enable  
Select YES to Lockout dispensing until the hot  
water tank is at READY Temp. Default is NO  
DLY REPEAT DISP  
(-) 0 SEC (+)  
Use the (+) or (-) buttons to  
adjust the Delay Time  
Enter the desired time delay before allowing the  
next dispense to take place, [0 - 10 sec.]  
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.  
CAL LEFT SIDE ?  
EXIT YES  
Select (YES) to enable  
Selecting Yes will enable the Left Dispenser  
Calibration routine, (see Field Calibration before  
attempting to calibrate the dispenser).  
If NO - go to CAL RIGHT SIDE menu.  
Placea50mL(#34843.1000) The Left Pump will dispense concentrate for 20  
graduated cylinder under the seconds, then shut off automatically. Collect and  
Leftdispensetip,thenactivate measure the concentrate dispensed.  
the Left Dispenser  
CAL LEFT PUMP ?  
PULL DISPENSE  
Use the (+) or (-) buttons to Enter the volume of concentrate measured from  
CAL LF PUMP VOL  
(-) 43mL (+)  
enter volume collected  
the Left Pump in mL, (not Oz.) regardless of  
Preferred Units selected.  
Place a 64 Oz. (2000 mL) The Left Dispenser will dispense hot water for 20  
container under the Left seconds, then shut off automatically. Collect and  
dispensetip, thenactivatethe measure the water dispensed.  
Left Dispenser  
CAL LF WTR FLOW ?  
PULL DISPENSER  
Use the (+) or (-) buttons to Enter the volume of the water measured from the  
CAL LF WTR VOL  
(-) 36.0OZ (+)  
enter volume collected  
Left dispenser in Oz. (mL).  
NONE  
Scroll down to bypass this screen.  
CAL LEFT SIDE ?  
EXIT YES  
Select (YES) to enable Selecting Yes will enable the Right Dispenser  
CAL RIGHT SIDE ?  
EXIT YES  
Calibration routine.  
Calibration routine, (see Pump Calibration) prior  
to calibrating the dispenser.  
34766 120105  
15  
MENU SCREEN  
ACTION  
DESCRIPTION  
If NO - skip to next menu.  
Placea50mL(#34843.1000) The Right Pump will dispense concentrate for  
graduated cylinder under 20 seconds, then shut off automatically. Collect  
the Right dispense tip, then and measure the concentrate dispensed.  
activate the Right Dispenser  
CAL RIGHT PUMP ?  
PULL DISPENSER  
Use the (+) or (-) buttons to Enter the volume of concentrate measured from  
CAL RT PUMP VOL  
(-) 43mL (+)  
enter volume collected  
the Right Pump in mL(not Oz.) regardless of  
Preferred Units selected.  
Place a 64 Oz. (2000 mL) The Right Dispenser will dispense hot water for  
container under the Right 20 seconds, then shut off automatically. Collect  
dispensetip, thenactivatethe and measure the water dispensed.  
Right Dispenser  
CAL RT WTR FLOW  
PULL DISPENSER  
Use the (+) or (-) buttons to Enter the volume of the water measured from the  
CAL RT WTR VOL  
(-) 36.0OZ (+)  
enter volume collected  
Right dispenser in Oz. (mL)  
NONE  
Scroll down to bypass this screen.  
CAL RIGHT SIDE ?  
EXIT YES  
For Portion Control Dispensers (LCA-2 PC, LCA-2C PC, LCA-2A PC) only  
Place a 64 Oz. (2000 mL) The Hot Water Dispenser will dispense for 20  
CAL HOT WTR FLO ?  
PULL DISPENSE  
containerundertheHotWater seconds, then shut off automatically. Collect and  
dispensetip, thenactivatethe measure the water dispensed.  
Hot Water Dispenser  
Use the (+) or (-) buttons to Enter the volume of the water measured from the  
CAL HOT WTR VOL  
(-) 34.0OZ (+)  
enter volume collected  
Hot Water Dispenser in Oz. (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).  
XXX CAL -> XXX  
(-) TankTemp (+)  
FlvrGrdRange 10%  
(-) EXIT (+)  
Use the (+) or (-) buttons to Used to set the maximum adjustment the Flavor  
adjust % value  
Guard feature is allowed to make, [3 - 15%].  
LfFlvrGrdTargets  
RPM XXX-CON XXX  
NONE  
Displays the Left Dispenser target RPM and  
Conductance Reading, (Diagnostics Only)  
RtFlvrGrdTargets  
RPM XXX-CON XXX  
NONE  
Displays the Right Dispenser target RPM and  
Conductance Reading, (Diagnostics Only)  
34766 120105  
16  
MENU SCREEN  
ACTION  
DESCRIPTION  
BIB EMPTY -> 500  
(-) EXIT (+)  
Use the (+) or (-) buttons to Used to set the Conductance Threshold for the  
adjust empty BIB threshold Empty BIB warning. Default is 500  
XX REFILL -> 155  
(-) EXIT (+)  
Use the (+) or (-) buttons to Used to set the Conductance Threshold for the  
adjust Refill threshold  
Tank Refill Probe.  
WTR START DELAY  
(-) .15SEC (+)  
Use the (+) or (-) buttons to Dispense Valve ON Delay. Eliminates weak mix  
adjust delay time at the beginning of a dispense.  
WTR STOP DELAY  
(-) .15SEC (+)  
Use the (+) or (-) buttons to Dispense Valve OFF Delay. Flushes the mix  
adjust delay time  
chamber at the end of a dispense.  
TEST LED’S ?  
NO EXIT YES  
Select (YES) or (NO)  
LED diagnostics. Selecting YES will light all Front  
Door LED’s.  
TEST SWITCHES ?  
UseSwitchToTest  
NONE  
SwitchDiagnostic:Activateswitchesseparatelyto  
test. Display will indicate which Switch has been  
activated. NOTE: Door Interlock switch must be  
held closed.  
TEST REFILL ?  
EXIT YES  
Momentarily depress (YES) RefillValveDiagnostic:PressYEStomomentarily  
energize the Solenoid. CAUTION: Inlet Valve will  
open and water will flow, if connected and turned  
ON.  
TEST HEATER ?  
EXIT YES  
Momentarily depress (YES) TankHeaterDiagnostic:PressYEStomomentarily  
energize the Tank Heater Circuit.  
CAUTION: AC power will be applied to the Tank  
Heater Circuit.  
ENTER ASSET #  
(-) 000000 (+)  
Use the (+) or (-) buttons to Allows the user the option of entering an Asset  
adjust the ASSET NUMBER Number. Default is 000000  
SERIAL #  
LCA 0000000  
NONE  
Displaysthemanufacture’sSerialNumber(should  
be identical to the Serial Number on the machine  
Data Plate)  
FACTORY DEFAULTS  
Select (YES) or (NO)  
CAUTION: Selecting YES will RESET all  
Programming Functions to the Factory Default  
settings. NOTE: On LCC Models the Chiller will  
have to be reset to the ON condition, (see Chilled  
Unit programming function).  
NO  
YES  
34766 061605  
17  
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 and place it on the drip tray with the connector  
facing up. (See Fig. 1)  
3. Open the dispenser door and locate the appropriate left or right BIB Adapter fitting.  
4. Pull the Adapter fitting down and connect it to the BIB. (See Fig. 2)  
5. Place the BIB upright in the machine, rotating it into position with the connector facing forward.  
6. Rotate the BIB Adapter to avoid sharp bends in the tubing and allow it to be routed between the two  
pumps.  
Refer to the Tube Installation Decal on the door for proper routing. (See Fig. 3)  
7. Close the cabinet door.  
Fig. 1  
Fig. 2  
Fig. 3  
PRIMING THE CONCENTRATE LINES  
1. Open the dispenser door.  
2. Load concentrate per instructions in the section titled Loading the Concentrate.  
3. Select Prime on the Function Selector Switch and Run on the Mode Selector Switch.  
4. Close the dispenser door.  
5. Place a container under the appropriate dispense tip.  
6. Activate the appropriate dispenser until concentrate flows from the dispense nozzle. Priming may take 5 to  
10 seconds.  
7. Open the dispenser door, select Normal on the Function Selector Switch, and then close door.  
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.  
7
3
3
34766 042304  
18  
OPERATING THE PULL & HOLD DISPENSER  
(Models LCA-2, LCA-2C, LCA-2A, LCC-2, LCC-2C, LCC-2A)  
Set the Function Selector Switch to Normal and the Mode Selector Switch to Run.  
1. Pull and Hold Dispense Mode (Cup at a time)  
a. Place cup on the cup tray beneath the desired dispensing tip. For a large container, flip the cup tray up  
and place the container on top of the drip tray.  
b. Pull and Hold the corresponding dispense handle until the cup or other container is full.  
c. Remove cup or container.  
2. Portion Dispense Mode (Preset volume dispensing) Refer to Programming Functions on how to set this  
volume.  
a. Place the appropriate size container beneath the desired dispensing tip. For large containers, flip the cup  
tray up and place the container on top of the drip tray.  
b. Momentarily press the Portion Switch. The Portion LED will illuminate for 5 seconds after the Portion  
Switch is pressed.  
c. Momentarily pull the corresponding dispense handle, then release. If the user waits longer than 5 seconds  
to pull the handle, the dispenser will default back to the Pull & Hold Mode. Portion Dispense Mode can  
be disabled at any time during the portion dispense by either momentarily pulling the Dispense Handle  
again or pressing the Stop button.  
d. Wait for container to fill and the dispenser to quit dispensing, then remove container.  
3. Hot Water Dispense  
a. Place container under the hot water dispenser (center of machine). For large containers, flip the cup tray  
up and place the container on top of the drip tray.  
b. Push and hold the Hot Water Switch until the water reaches the desired level, then release.  
c. Remove container.  
Filling Cambros or other large containers:  
The dispenser is designed primarily for cups or other small containers that will fit under the dispense tips.  
However, it may be used to fill larger containers (up to 2 Gal) by use of an extension hose on the dispense tip.  
Removing the Flow Restrictors will increase the dispenser flow rate to 2.5 Oz/sec. (74 mL/sec.) and reduce the  
time to fill larger containers, (see Setting Dispenser Flow Rate.)  
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  
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: The temperature of the product being dispensed will start to drop after ~2 gal. continuous draw.  
Recovery time will be dependent on the temperature of the supply water and the voltage at which the heater  
coil is being operated.  
34766 042304  
19  
OPERATING THE PRESET PORTION CONTROL DISPENSER  
(Models LCA-2 PC, LCA-2C PC, LCA-2A PC)  
Set the Function Selector Switch to Normal and the Mode Selector Switch to Run.  
Dispensing Preset Portions of Coffee or Hot Water  
1. Primary Volume Portion Dispense Mode. (Volume 1) Refer to Programming Functions on how to set this  
amount.  
a. Place cup on the cup tray beneath the desired dispensing tip. For a large container, flip the cup tray up  
and place the container on top of the drip tray.  
b. Momentarilypresstheappropriatedispenseswitch.Thedispenserwillautomaticallydispensethebeverage  
at the preset amount. Allow the mix chamber to drain at the end of the cycle.  
c. Remove cup or container.  
2. Alternate Volume Portion Dispense Mode. (Volume 2) Refer to Programming Functions on how to set this  
volume.  
a. Place the appropriate size container beneath the desired dispensing tip. For large containers, flip the cup  
tray up and place the container on top of the drip tray.  
b. Momentarily press the Portion Switch. The Portion LED will illuminate for 5 seconds after the Portion  
Switch is pressed.  
c. Momentarily press the corresponding Dispense Switch. If the user waits longer than 5 seconds to push  
the switch, the dispenser will default back to the Primary Volume preset amount. Alternate Portion  
Dispense Mode can be disabled at any time during the portion 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.  
Push and Hold Dispensing of Coffee or Hot Water  
Push and Hold Dispense Mode. See Programming Functions on how to set the Preset Volume to Zero.  
a. Place cup on the cup tray beneath the desired dispensing tip. For a large container, flip the cup tray up  
and place the container on top of the drip tray.  
b. Push and hold the corresponding dispense switch until the container is full.  
c. Remove cup or container.  
Filling Cambros or other large containers:  
The dispenser is designed primarily for cups or other small containers that will fit under the dispense tips.  
However, it may be used to fill larger containers (up to 5 Gal) by use of an extension hose on the dispense tip.  
Removing the Flow Restrictors will increase the dispenser flow rate to 2.5 Oz/sec. (74 mL/sec.) and reduce the  
time to fill larger containers, (see Setting Dispenser Flow Rate.)  
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  
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: The temperature of the product being dispensed will start to drop after ~2 gal. continuous draw. Recovery  
time will be dependent on the temperature of the supply water and the voltage at which the heater coil is being  
operated.  
34766 120105  
20  
CLEANING & PREVENTATIVE MAINTENANCE  
General Cleaning and Sanitizing Procedures  
Note: The BUNN® Liquid Coffee Dispenser incorporates a “user selectable” rinse reminder feature, which lights  
the Rinse LED on the front panel and disables dispensing when it is time to rinse. See Programming Functions  
to activate this feature.  
Daily: RINSING  
1. Open the dispenser door.  
2. Select Rinse on the Function Selector Switch and Run on the Mode Selector Switch.  
3. Close the dispenser door.  
4. Place a 1/2 gal (2 liter) container under the appropriate dispense nozzle or nozzles.  
5. Activate the Dispenser of the appropriate side or sides for approximately twenty seconds or until the hot  
water is clear or has no concentrate coloring in it.  
6. Open the dispenser door, select Normal on the Function Selector Switch, and then close door.  
Note: To clear the “Rinse” alarm, activate each dispenser until the flow stops automatically (approx. 20 seconds  
for each tip). The “Rinse” alarm LED will turn off when the Rinse Procedure has been satisfied for both sides.  
Daily: PARTS WASHING  
1. Remove and wash the drip tray, drip tray cover, and cup tray in a mild detergent solution. Rinse  
thoroughly.  
2. Wipe splash panel, area around dispense nozzles, door, and cabinet with a clean damp cloth.  
Weekly: SANITIZING  
1. Open the dispenser door.  
2. Select Prime on the Function Selector Switch and Run on the Mode Selector Switch.  
3. Remove the bag connector from the product box and disassemble or prop open the internal valve to allow  
free flow of product through the connector. NOTE: Cutting the mating fittings from an empty bag makes an  
excellent “free flowing” connector for this purpose.  
4. Place the bag connector into a one-gallon (3.8 liter) container of warm soapy tap water 140°F (60°C).  
5. Place an empty container under dispense tip and activate the corresponding Dispenser until the clean soapy  
water is dispensed from the dispense tip.  
6. Repeat steps 4 and 5 with warm tap water 140°F (60°C) to rinse the soapy water from the pump tubing.  
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 4 and 5 with the sanitizing solution. Once sanitizing solution is being dispensed, stop  
dispensing and allow the solution to sit for 5 minutes.  
9. Repeat step 6 to flush out the sanitizing solution from the pump tubing.  
10. Remove the mating connector from the bag connector.  
11. Reattach the bag connector to product box.  
12. Select Normal on the Function Selector Switch and Run on the Mode Selector Switch.  
13. Activate the Dispenser until concentrate/water mixture appears. Then dispense one 12 ounce (354.9 ml)  
glass of concentrate/water mixture and discard.  
14. Repeat steps 1 through 13 for other dispense head.  
15. Wipe internal and external surfaces with a clean, damp cloth.  
34766 042304  
21  
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 on the Cabinet door for details.  
1. Rinse the pump tubing with warm tap water (Refer to steps 1 - 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 it and the retainer plate  
aside.  
3. Depress the tension screw and remove it from the notch in the pump housing, releasing the spring tension  
on the pump 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 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  
that 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 on the pump  
band.  
9. Replace the tubing retainer plate and tighten the thumbscrew.  
10. Repeat steps 1 through 9 for the other pump.  
Thumbscrew  
2.0”  
2.0”  
Tension  
Screw  
Lubricate between arrows  
Remove Retaining Plate Release Spring Tension  
Remove Tubing  
Lubricate New Tube  
Tension Screw  
Tube Clamp  
Install New Tubing  
Completed Installation  
34766 112502  
22  
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 front splash panel.  
4. Pull out drain tube to empty into a sink or a container with a minimum of five-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.  
Be very careful with the draining water because it can be very hot.  
7. Close drain clamp, insert drain plug, place drain tube back into machine, and replace splash panel.  
Note: The dispenser must be refilled using the Initial Fill & Heat steps before reconnecting the power source.  
34766 112502  
23  
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.  
Shortingtheterminalsortheapplicationofexternalvoltagestoelectroniccomponentsmayresultincomponent  
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. The  
red “Power LED” on the door indicates that the unit is connected to AC Power.  
Follow recommended service procedures.  
Replace all protective shields or safety notices.  
Front Panel LED Display Messages  
Power LED “OFF”  
Dispenser Not plugged in.  
AC Circuit Breaker OFF  
Check Power Cord  
Check the AC Power Circuit Breaker  
Service Required  
No AC Power  
Ready LED “OFF”  
Water Temp. Too Low  
Usage has exceeded the  
capacity of the Tank Heater  
Check Tank Temp Setting  
Check Ready Temp. Setting  
Service Required: Change the Supply Voltage,  
see Optional Field Wiring  
Rinse LED “ON”  
Rinse Cycle Required  
Rinse Dispenser, see Rinse Procedure  
Rinse Dispenser, see Rinse Procedure  
Rinse Timer  
Rinse LED “FLASHING” Dispenser Locked Out  
Rinse Lockout Enabled  
Rinse Cycle Required  
Portion LED “ON”  
Portion Dispense  
Enabled  
Alternate Portion Dispenser  
Volume #2 has been selected  
Activate the Dispenser within 5 sec. to  
dispense the pre-selected volume.  
34766 042304  
24  
Troubleshooting (Continued)  
Left Refill LED “ON”  
Concentrate BIB is Empty.  
BIB Not properly connected  
Tubing kinked or blocked  
Replace BIB, see Loading the Concentrate  
Check BIB Connector Fittings  
Check Tubing Installation  
Left BIB Empty  
Empty BIB warning set too high  
Check Threshold, see Field Calibrating the  
Emoty BIB Warning  
Right Refill LED “ON”  
Concentrate BIB is Empty.  
BIB Not properly connected  
Tubing kinked or blocked  
Replace BIB, see Loading the Concentrate  
Check BIB Connector Fittings  
Check Tubing Installation  
Right BIB Empty  
Empty BIB Warning set too high  
Check Threshold, see Field Calibrating the  
Empty BIB Warning  
Left Refill LED  
“FLASHING”  
Empty BIB Lockout  
Enabled  
Left Dispenser will not operate  
Left Dispenser will not operate  
Replace BIB, see loading the Concentrate  
Replace BIB, see loading the Concentrate  
Left Refill LED  
“FLASHING”  
Empty BIB Lockout  
Enabled  
All LED’s “FLASHING”  
The Dispenser has detected an Remove the lower splash guard to view the  
Fault Detected  
Internal Fault  
Fault message, See Diagnostics. After the  
fault has been repaired or corrected - Hold  
the “Stop” button for 10 seconds to clear  
the message.  
34766 102103  
25  
Troubleshooting (Continued)  
Dispenser Diagnostics-LCD Display  
Screen Displayed  
Possible Cause  
Troubleshooting Procedures  
LF TARGET RPM  
TOO HIGH !!  
1. The Tube Size selected for the Left Refer to “Selecting the Correct Pump  
Hand Dispenser is too small for the Tubing” section of the manual.  
application.  
TUBE TOO SMALL  
CHECK DISP RATIO  
2. The Ratio selected for the Left Hand Refer to recommended Dispense Ratio  
Dispenser is not correct for the on the product label.  
application.  
RT TARGET RPM  
TOO HIGH !!  
1. The Tube Size selected for the Right Refer to “Selecting the Correct Pump  
Hand Dispenser is too small for the Tubing” section of the manual.  
application.  
TUBE TOO SMALL  
CHECK DISP RATIO  
2. The Ratio selected for the Right Refer to recommended Dispense Ratio  
Hand Dispenser is not correct for the on the product label.  
application.  
LF TARGET RPM  
TOO LOW !!  
1. The Tube Size selected for the Left Refer to “Selecting the Correct Pump  
Hand Dispenser is too large for the Tubing” section of the manual.  
application.  
TUBE TOO LARGE  
CHECK DISP RATIO  
2. The Ratio selected for the Left Hand Refer to recommended Dispense Ratio  
Dispenser is not correct for the on the product label.  
application.  
RT TARGET RPM  
TOO LOW !!  
1. The Tube Size selected for the Right Refer to “Selecting the Correct Pump  
Hand Dispenser is too large for the Tubing” section of the manual.  
application.  
TUBE TOO LARGE  
CHECK DISP RATIO  
2. The Ratio selected for the Right Refer to recommended Dispense Ratio  
Hand Dispenser is not correct for the on the product label.  
application.  
LEFT BIB EMPTY!  
1. Concentrate BIB is Empty.  
2. BIB Not properly connected.  
Replace BIB, see loading the Concentrate  
Check BIB Connector Fittings  
Check Tubing installation  
REPLACE PRODUCT 3. Tubing kinked or blocked.  
CHECK THRESHOLD 4. Empty BIB Warning set too high.  
Check Threshold, see Field Calibrating  
the Empty BIB Warning  
RIGHT BIB EMPTY! 1. Concentrate BIB is Empty.  
2. BIB Not properly connected.  
Replace BIB, see loading the Concentrate  
Check BIB Connector Fittings  
Check Tubing installation  
REPLACE PRODUCT 3. Tubing kinked or blocked.  
CHECK THRESHOLD 4. Empty BIB Warning set too high.  
Check Threshold, see Field Calibrating  
the Empty BIB Warning  
34766 011604  
26  
Troubleshooting (Continued)  
Screen Displayed  
Possible Cause  
Troubleshooting Procedures  
OVERFLOW CUP  
FULL. EMPTY CUP  
1. Refill valve stuck open  
2. Faulty refill probe  
Service Required  
Service Required  
3. Faulty overflow switch  
1. Tank Heater failure  
2. Triac failure  
Service Required  
HEATING TIME TOO  
LONG  
Service Required  
Service Required  
CHECK HEATING  
CIRCUIT  
3. Tank Temp. sensor failure  
1. Water shut off to dispenser  
Service Required  
FILL TIME TOO LONG  
Check water supply shut-off  
CHECK WATER SUPPLY 2. Inlet Solenoid Valve failure  
Service Required  
TANK TEMP SENSOR  
OUT OF RANGE  
1. Corresponding Temperature Sensor Service Required  
Probe wire(s) broken or disconnected  
CHECK FOR BAD  
CONNECTIONS  
COOL TEMP SENSOR  
OUT OF RANGE  
1. Corresponding Temperature Sensor Service Required  
Probe wire(s) broken or disconnected.  
CHECK FOR BAD  
CONNECTIONS  
2. Product cabinet temperature too low.  
Service Required  
EVAP TEMP SENSOR  
OUT OF RANGE  
1. Corresponding Temperature Sensor Service Required  
Probe wire(s) broken or disconnected.  
CHECK FOR BAD  
CONNECTIONS  
2. Evaporator temperature too low.  
Service Required  
TANK TEMP SENSOR  
OUT OF RANGE  
1. Corresponding Temperature Sensor Service Required  
Probe wire(s) shorted to housing, or to  
each other.  
CHECK WIRE FOR  
SHORTS  
COOL TEMP SENSOR  
OUT OF RANGE  
1. Corresponding Temperature Sensor Service Required  
Probe wire(s) shorted to housing, or  
to each other.  
CHECK WIRE FOR  
SHORTS  
2. Product cabinet temperature too high.  
Service Required  
34766 011604  
27  
Troubleshooting (Continued)  
Screen Displayed  
Possible Cause  
Troubleshooting Procedures  
EVAP TEMP SENSOR  
OUT OF RANGE  
1. Corresponding Temperature Sensor  
Probe wire(s) shorted to housing, or  
to each other.  
Service Required  
CHECK WIRE FOR  
SHORTS  
2. Evaporator temperature too high.  
1. Motor failure  
Service Required  
Service Required  
Service Required  
LEFT PUMP FAULT!  
CHK PUMP WIRING  
2. RPM Sensor failure  
CHK RPM SENSOR  
CHK TUBING AREA  
RT PUMP FAULT!  
CHK PUMP WIRING  
1. Motor failure  
Service Required  
Service Required  
2. RPM Sensor failure  
CHK RPM SENSOR  
CHK TUBING AREA  
COOLER FAULT!  
1. Cabinet circulating fan failure  
2. Ice build up on evaporator coils  
3. Evaporator sensor failure  
1. Air intake filter clogged  
2. Wiring failure  
Service Required  
Service Required  
Service Required  
Clean Air Filter  
EVAP TEMP TOO HI  
CHECK EVAP FAN  
CHK EVAP SENSOR  
COOLING TIME  
TOO LONG  
Check wiring harness for breaks,  
shorts, open connectors  
CHECK AIR FILTER  
CHECK COOLING UNIT  
3. Compressor failure  
1. Tube leaking  
Service Required  
COND PROBE FAULT  
CHECK COND PROBES  
Check pump & tubing for proper  
installation  
Service Required  
2. Dispense switch failure  
3. Dispense valve leaking  
CHK DISP SWITCHES  
CHK CONNECTIONS  
Service Required  
JUMPER FAULT!  
CONFIG NOT VALID  
1. Invalid wire harness configuation  
Service Required  
CHECK J-18  
ON CONTROL BOARD  
34766 010407  
28  
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.  
64 Oz (2000 ml) graduated container.  
Remove the lower splash guard assembly to access prior to starting this procedure  
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.  
Calibrating the Left Side Dispenser  
Concentrate Pump Calibration  
1. Select PRIME on the Function Selector Switch. (refer to Priming the Concentrate Lines).  
2. Place a container under the Left 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 Left 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.  
Acceptable ranges for the volume collected  
Tubing Size  
3/16” tubing  
1/8” tubing  
Volume Collected  
40 - 47 ml.  
17 - 22 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, press the Down Arrow Key  
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.  
(Continued Next Page)  
34766 042304  
29  
Field Calibration of the Concentrate Pumps / Dispenser Flow Rates  
(Continued)  
Dispenser Flow Rate Calibration  
13. Press Down Arrow Key to display the CAL LF WTR FLO menu screen.  
14. Place a 64 Oz (2000 ml) graduated container under Left Dispense Tip and Pull the Left Dispense Handle  
momentarily. The dispenser will dispense water for 20 seconds and then shut OFF automatically.  
15. Keep the graduated container under dispense tip until all the water stops dripping.  
16. Measure the volume of water collected in the graduated container.  
Acceptable ranges for the volume collected  
_____Dispenser Flow Rate___________  
1.8 Oz/sec (53 ml/sec) w/ flow restrictor  
2.5 Oz/sec (74 ml/sec) w/o flow restrictor  
____Volume Collected____  
32 - 38 Oz, (946 - 1124 ml)  
46 - 52 Oz ,(1360 - 1538 ml)  
17. If the amount collected is not within the acceptable range, empty the graduated container and repeat  
STEPS 14 – 16  
18. If the amount collected is still not within range, inspect the dispense valves, tubing and mix chamber for  
lime, kinks or other obstructions.  
19. When satisfied with the volume of concentrate collected, press the Down Arrow Key.  
20. The CAL LF WTR VOL screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the  
amount measured in STEP 16.  
21. Press Down Arrow Key again to exit the CAL LEFT SIDE functions.  
Calibrating the Right Side Dispenser  
Repeat STEPS 1-21 above for the “CAL RIGHT SIDE” menus.  
Field Calibrating the Hot Water Flow Rate  
1. Locate the programming module and use the Arrow Down key to scroll through the LCD screen until “CAL  
HOT WTR FLO?” appears.  
2. Place a 64 Oz (2000 ml) graduated container under Hot Water Tip and press the hot water switch. The unit  
will dispense Hot Water for 20 seconds and then shut OFF automatically. Keep the graduated container under  
the dispense tip until all the water stops dripping.  
3. Measure the volume of water collected in the graduated container. The acceptable range for the volume  
collected is 32 - 38 Oz. (946 - 1124 ml).  
4. If the amount collected is not within the acceptable range, empty the container and repeat steps 2 & 3.  
5. If the amount collected is still not within range, inspect the hot water valve, tubing and fittings for lime, kinks,  
or other obstructions.  
6. When satisfied with the volume of concentrate collected, press the Down Arrow Key.  
7. The “CAL HOT WTR VOL” screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the  
ammount measured in step 3.  
8. Press Down Arrow Key again to exit this function.  
34766 120105  
30  
Field Calibrating the Empty BIB Warning  
The dispenser will automatically turn on the Left or Right “REFILL LED”, see Operating Controls and Interface,  
when the corresponding BIB is Empty. The Refill message is triggered when the FlavorGardTM sensor reading  
drops below the minimum setting. The factory set minimum is 500 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 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.  
Calibrating The Empty BIB Threshold  
1. Remove the lower splash guard assembly to access the digital programming module with LCD display.  
2. Open the cabinet door and set the Function Switch to the “Rinse” position. Close the door.  
3. Place a large container under the Left dispenser tip, then activate and hold the left dispenser.  
4. Dispense long enough to rinse all the concentrate out of the mix chamber and for the Conductance reading  
to stabilize and stop dropping.  
5. 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.  
6. Repeat steps 3, 4 & 5 for the Right dispenser.  
7. Add 100 points to the larger of the Left or Right side Conductance value. This is the new Empty BIB threshold  
value for your dispenser.  
8. Enter this new value into the Empty BIB Alarm threshold, see Programming the Dispenser.  
34766 120105  
31  
SCHEMATIC WIRING DIAGRAM  
L1  
N (120V 2-Wire)  
N (120/208-240V 3-Wire)  
L2 (120/208-240V 3-Wire) L2 (208-240V 2-Wire)  
LCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C  
GRN  
LIMIT  
THERMOSTAT  
BLK-14  
SW. & THERMOSTAT  
1
2
BLK-14  
RED-14  
TRIAC  
TANK HEATER  
RED-14  
BLK-14  
BLU-14  
BLU-14  
RED-14  
WHI  
3
4
BLK  
TUBE  
WARMER  
PORTION  
CONTROL  
UNIVERSAL  
POWER SUPPLY  
RED  
BLK  
OVERFLOW  
PROTECTION SW  
RED  
TUBE  
WARMER  
RED  
WHI/GRY  
BLK  
RED  
WHI  
BLK  
GRN  
GRN  
RED  
-V  
+V  
N(L2)  
L(L1)  
DOOR  
WHI/GRY  
RED/BLK  
SOL  
-V  
+V  
RED  
HOT WATER  
TOUCHPAD  
YES (+)  
RED  
RED  
RED  
BRN/BLK  
BRN/WHI  
BLU/BLK  
SOL  
1
RIGHT DISP  
2
3
4
5
6
7
SOL  
EXIT  
LEFT DISP  
WHI/BLU  
RED  
WHI/RED  
J3-1  
NO (-)  
SOL  
REFILL  
RED  
BLK  
GRN  
RED  
BLK  
BLU  
J14-1  
BLK  
J3-6  
J4-1  
LEFT RPM  
SENSOR  
RED  
RED  
BLK  
GRN  
RED  
BLK  
VIO  
RED/BLK  
BRN/WHI  
BRN/BLK  
WHI/GRY  
C
O
N
T
RIGHT RPM  
SENSOR  
J14-7  
J7-1  
J4-5  
J5-1  
VIO  
BLU  
RED  
YEL  
ORN  
BLK  
BLK  
RED  
WHI/ORN  
WHI/YEL  
LEFT  
PUMP  
BLK  
RED  
BLU/BLK  
WHI/YEL  
YEL  
R
O
L
J5-3  
J7-5  
BLU  
BLK  
RED  
RIGHT  
PUMP  
J16-1  
P
C
B
O
A
R
D
ORN  
WHI/ORN  
ORN  
WHI/ORN  
WHI/YEL  
PNK  
VIO  
BLK  
BLK  
BLK  
BLK  
GRN  
BLK  
J7-10  
J16-5  
J8-1  
J8-3  
GRN  
GRN  
J18-1  
1
J16-12  
P
R
O
B
E
J18-6  
GRN  
WHI/YEL  
BLK  
WHI/ORN  
BLK  
t
DISPENSERS WITH  
PORTION CONTROL  
LEFT  
RIGHT  
CONDUCTANCE  
SENSOR  
CONDUCTANCE  
SENSOR  
LF DISP. SW.  
S
W
I
J1-1  
J1-5  
BLU/WHI  
RED/BLK  
GRN  
T
C
H
ORN/BLK  
GRN/WHI  
A
N
D
BLK  
RED/WHI  
BLU/BLK  
RED  
GRN/BLK  
WHI/BLK  
ORN  
L
E
RT DISP. SW.  
J1-10  
J1-16  
D
B
O
A
R
D
RED  
BLK  
HEAT SINK  
THERMISTOR  
PELTIER  
WHI  
RED  
t
SELECTOR  
SWITCH  
SELECTOR  
SWITCH  
WHI/GRY  
WHI/YEL  
TAN  
NITE  
RINSE  
BLK  
BLK  
t
WHI/VIO  
COOLING CABINET  
RUN  
PRIME  
CABINET  
THERMISTOR  
BLK  
120 VOLTS AC 2 WIRE  
120/208-240 VOLTS AC 3 WIRE  
208-240 VOLTS AC 2 WIRE  
SINGLE PHASE 50/60HZ  
LLC Models only  
Models without Master ON/OFF Switch  
34766 010407  
32  
SCHEMATIC WIRING DIAGRAM  
LCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C  
N (120V 2-Wire)  
L2 (208-240V 2-Wire)  
L1  
RED-14  
BLK-14  
MASTER ON/OFF  
SWITCH  
GRN  
LIMIT  
THERMOSTAT  
BLK-14  
SW. & THERMOSTAT  
1
2
BLK-14  
RED-14  
TRIAC  
TANK HEATER  
BLK-14  
BLU-14  
BLU-14  
RED-14  
3
4
BLK  
WHI  
TUBE  
WARMER  
PORTION  
CONTROL  
UNIVERSAL  
POWER SUPPLY  
RED  
BLK  
OVERFLOW  
PROTECTION SW  
RED  
TUBE  
WARMER  
RED  
WHI/GRY  
BLK  
RED  
WHI  
BLK  
GRN  
GRN  
RED  
-V  
+V  
N(L2)  
L(L1)  
DOOR  
WHI/GRY  
RED/BLK  
SOL  
-V  
+V  
RED  
HOT WATER  
TOUCHPAD  
YES (+)  
RED  
RED  
RED  
BRN/BLK  
BRN/WHI  
BLU/BLK  
SOL  
1
2
3
4
5
6
7
RIGHT DISP  
SOL  
EXIT  
LEFT DISP  
WHI/BLU  
RED  
WHI/RED  
J3-1  
NO (-)  
SOL  
REFILL  
RED  
BLK  
GRN  
RED  
BLK  
BLU  
J14-1  
BLK  
J3-6  
LEFT RPM  
SENSOR  
RED  
J4-1  
RED  
BLK  
GRN  
RED  
BLK  
VIO  
RED/BLK  
BRN/WHI  
BRN/BLK  
WHI/GRY  
C
O
N
T
RIGHT RPM  
SENSOR  
J14-7  
J7-1  
J4-5  
J5-1  
VIO  
BLU  
RED  
YEL  
ORN  
BLK  
BLK  
RED  
WHI/ORN  
WHI/YEL  
LEFT  
PUMP  
BLK  
RED  
BLU/BLK  
WHI/YEL  
YEL  
R
O
L
J5-3  
J7-5  
BLU  
BLK  
RED  
RIGHT  
PUMP  
J16-1  
P
C
B
O
A
R
D
ORN  
WHI/ORN  
ORN  
WHI/ORN  
WHI/YEL  
PNK  
VIO  
BLK  
BLK  
BLK  
BLK  
GRN  
BLK  
J7-10  
J16-5  
J8-1  
J8-3  
GRN  
GRN  
J18-1  
1
J16-12  
P
R
O
B
E
WHI/YEL  
BLK  
WHI/ORN  
BLK  
J18-6  
LEFT  
CONDUCTANCE  
SENSOR  
RIGHT  
CONDUCTANCE  
SENSOR  
GRN  
t
DISPENSERS WITH  
PORTION CONTROL  
LF DISP. SW.  
S
W
I
J1-1  
J1-5  
BLU/WHI  
RED/BLK  
GRN  
T
C
H
ORN/BLK  
GRN/WHI  
A
N
D
BLK  
RED  
BLK  
RED/WHI  
BLU/BLK  
RED  
GRN/BLK  
WHI/BLK  
ORN  
L
E
RT DISP. SW.  
J1-10  
J1-16  
HEAT SINK  
THERMISTOR  
D
PELTIER  
B
O
A
R
D
RED  
t
WHI  
SELECTOR  
SWITCH  
SELECTOR  
SWITCH  
t
COOLING CABINET  
CABINET  
THERMISTOR  
WHI/GRY  
WHI/YEL  
TAN  
NITE  
RINSE  
BLK  
BLK  
WHI/VIO  
RUN  
PRIME  
120 VOLTS AC 2 WIRE  
120/208-240 VOLTS AC 3 WIRE  
208-240 VOLTS AC 2 WIRE  
SINGLE PHASE 50/60HZ  
BLK  
LLC Models only  
Models with Master ON/OFF Switch  
34766 010407  
33  
SCHEMATIC WIRING DIAGRAM LCC-2A/LCA-2A/LCA-2A, PC  
CAPACITOR .01uF  
GRN  
CAPACITOR .01uF  
GRN  
L1  
N
GRN  
RFI SUPPRESION  
CAPACITOR 2.2uF  
BLK  
BLK  
DOUBLE POLE  
LIMIT THERMOSTAT  
BLK-14  
SW. & THERMOSTAT  
1
2
TRIAC  
TANK HEATER  
BLK-14  
BLU-14  
BLU-14  
RED-14  
RED-14  
3
4
Fuse 1  
Fuse 2  
BLK  
BLK  
WHI  
WHI  
10 AMP  
10 AMP  
PORTION  
CONTROL  
UNIVERSAL  
TUBE  
WARMER  
OVERFLOW  
POWER SUPPLY  
PROTECTION SW  
RED  
RED  
BLK  
RED  
WHI/GRY  
WHI  
BLK  
GRN  
GRN  
RED  
N(L2)  
L(L1)  
DOOR  
TUBE  
WARMER  
BLK  
RED  
WHI/GRY  
-V  
+V  
RED/BLK  
SOL  
-V  
RED  
+V  
HOT WATER  
TOUCHPAD  
RED  
RED  
RED  
BRN/BLK  
BRN/WHI  
BLU/BLK  
SOL  
1
RIGHT DISP  
2
3
4
5
6
7
YES (+)  
SOL  
EXIT  
LEFT DISP  
WHI/BLU  
RED  
WHI/RED  
J3-1  
NO (-)  
SOL  
REFILL  
RED  
BLK  
GRN  
RED  
BLK  
BLU  
J14-1  
BLK  
J3-6  
J4-1  
LEFT RPM  
SENSOR  
RED  
C
O
N
T
RED  
BLK  
GRN  
RED  
BLK  
VIO  
RED/BLK  
BRN/WHI  
BRN/BLK  
WHI/GRY  
RIGHT RPM  
SENSOR  
J14-7  
J7-1  
VIO  
BLU  
RED  
YEL  
ORN  
BLK  
BLK  
RED  
WHI/ORN  
WHI/YEL  
J4-5  
J5-1  
LEFT  
PUMP  
BLK  
RED  
BLU/BLK  
R
O
L
WHI/YEL  
YEL  
J5-3  
J7-5  
BLK  
RED  
RIGHT  
PUMP  
BLU  
J16-1  
ORN  
WHI/ORN  
ORN  
WHI/ORN  
WHI/YEL  
PNK  
VIO  
BLK  
P
C
J7-10  
J8-1  
J16-5  
B
O
A
R
D
BLK  
BLK  
BLK  
GRN  
BLK  
J8-3  
GRN  
J18-1  
J18-6  
1
J16-12  
P
R
O
B
E
GRN  
GRN  
WHI/YEL  
BLK  
WHI/ORN  
BLK  
t°  
DISPENSERS WITH  
PORTION CONTROL  
LEFT  
RIGHT  
CONDUCTANCE  
SENSOR  
CONDUCTANCE  
SENSOR  
S
LF DISP. SW.  
W
I
J1-1  
J1-5  
BLU/WHI  
RED/BLK  
GRN  
ORN/BLK  
GRN/WHI  
T
C
H
A
N
D
BLK  
RED/WHI  
BLU/BLK  
RED  
GRN/BLK  
WHI/BLK  
ORN  
L
E
RT DISP. SW.  
RED  
BLK  
J1-10  
J1-16  
D
HEAT SINK  
THERMISTOR  
B
O
A
R
D
PELTIER  
RED  
t°  
WHI  
SELECTOR  
SWITCH  
SELECTOR  
SWITCH  
WHI/GRY  
WHI/VIO  
WHI/YEL  
TAN  
t°  
NITE  
RINSE  
COOLING CABINET  
BLK  
BLK  
CABINET  
THERMISTOR  
230 VOLTS AC  
2 WIRE  
SINGLE PHASE  
50 HZ  
RUN  
PRIME  
BLK  
LCC Models only  
34766 092706  
34  

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