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Bunn LCA-2 User's Manual

1. INSTALLATION amp 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 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 www bunnomatic com CONTENTS 2 Programming the Dispenser Flow Rate 12 3 Loading the 1 18 User arc 3 Priming the Concentrate 18 Electrical Requirements 4 Operating the Pull amp Hold Dispenser 19 Plumbing Requirements 5 Operating the Preset Portion Control Dispenser 20 Initial 5 Filling Cambros or other large 20 Electrical ari gl 9 Cleaning amp Preventive Maintenance 21 Plumbing Hook up
2. eese 5 Replacing the Pump 22 Setting Dispenser Flow Rate 6 Draining the Hot 23 Selecting the Correct Pump Tubing 7 Troubleshooting REST 24 Operating Controls amp Interface 8 Field Calibration of the Concentrate Pumps 29 Initial Fill amp Heat esee 9 Dispenser Flow Rate Calibration 30 eee eee oy Ep Unies 10 Field Calibrating the Hot Water Flow Rate 30 Rinse Alarm 10 Field Calibrating the Empty BIB Warning 31 BIB Empty Lockout 11 Schematic Wiring 32 Brew Temperature Lockout 11 BUNN 0 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
3. Y A E N D L HEAT SINK 1 B THERMISTOR 1 PELTIER R D J146 SELECTOR COOLING CABINET t CABINET THERMISTOR 120 VOLTS AC 2 WIRE T RUN 120 208 240 VOLTS AC 3 WIRE BLK 208 240 VOLTS AC 2 WIRE SINGLE PHASE 50 60HZ Models with Master ON OFF Switch 33 34766 010407 SCHEMATIC WIRING DIAGRAM LCC 2A LCA 2A LCA 2A PC L1 CAPACITOR 01uF CAPACITOR O1uF GRN GRN GRN RFI SUPPRESION CAPACITOR 2 2uF BLK BLK DOUBLE POLE LIMIT THERMOSTAT TANK HEATER 10 AMP PORTION 10 UNIVERSAL CONTROL OVERFLOW POWER SUPPLY i WARMER PME SUE PROTECTION SW RED BED aum WHUGRY TUBE N L2 WARMER N RED BLK 1 1 TOUCHPAD LEFT SENSOR RIGHT RPM SENSOR C202 00 42 1 EDEN j o J16 12 1 1 1 1 i WHIYEL BLK DISPENSERS WITH ig 2 PORTION CONTROL 13 i LEFT RIGHT CONDUCTANCE CONDUCTANCE Leni SENSOR SENSOR B w Jt T PPRED BLK c GR H E x A CARNE a N D ces i E J1 10 D B HEATSINK 9 THERMISTOR ppe PELTIER pen id R T 4 B SELECTOR SWITCH CABINET THERMISTOR 230 VOLTS AC 2 WIRE i 1 i i f i i n COOLING CABINET 1 i 1 f 1 i i f SINGLE PHASE 50 HZ LCC Models o
4. s 9 Io e I p Ir NI 3 BLK 2 6 5 6 LEFT RIGHT CONDUCTANCE CONDUCTANCE SENSOR SENSOR J16 5 1 D 3 D fey 218 1 J16 12 Wel 218 6 COIIOU CO Ur ox Azoc gt 3 9 9 0 9 0 9 DISPENSERS WITH PORTION CONTROL 5 i x D a E 10 fle FF D a B x i R D 1 HEATSINK m THERMISTOR i m 120 208 240 VOLTS AC 3 WIRE SELECTOR SELECTOR re ae SWITCH i 1 NITE 1 ra 1 RUN COOLING CABINET ed CABINET 120 VOLTS AC 2 WIRE BLK THERMISTOR 1 1 1 1 1 208 240 VOLTS AC 2 WIRE SINGLE PHASE 50 60HZ Models without Master ON OFF Switch 32 34766 010407 SCHEMATIC WIRING DIAGRAM LCA 2 LCA 2 PC LCA 2C LCA 2C PC LCC 2 LCC 2C MASTER ON OFF N 120V 2 Wire L2 208 240V 2 Wire LIMIT THERMOSTAT TUBE WARMER RED UNIVERSAL PORTION CONTROL OVERFLOW ines PROTECTION SW WARMER i RED BED amm WHUGRY BLK y T HI GRY RED BLK TOUCHPAD GEREG 06 9 2 3o g 18 6 N 4 5 25 3 L P J164 C R J16 5 A R D l 2160 fof 1 1 2 6 3 BLK 2 6 3 1 LEFT RIGHT CONDUCTANCE CONDUCTANCE i SENSOR SENSOR DISPENSERS WITH 2 mood PORTION CONTROL 1 g 1 1 L 141 1 C HoJt5 XY JY
5. 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 LIMIT SW BLACK FIELD WIRING TERMINAL BLOCK DIAGRAM Models with Master ON OFF Switch TO MASTER TO MASTER 240V AC ON OFF TO MASTER 120V ON OFF ON OFF SWITCH SWITCH SWITCH 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 4 34766 010407 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 Ipm 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
6. Service Required Check water supply shut off Service Required Service Required Service Required Service Required Service Required Service Required Service Required Service Required Service Required 34766 011604 Screen Displayed EVAP TEMP SENSOR OUT aa CHECK WIRE FOR SHORTS LEFT PUMP FAULT CHK PUMP WIRING CHK RPM SENSOR CHK TUBING AREA RT PUMP FAULT CHK P WIRING CHK RPM SENSOR CHK TUBING AREA COOLER FAULT EVAP b TOO HI CHECK EVAP FAN CHK EVAP SENSOR COOLING TIME TOO LONG CHECK AIR FILTER CHECK COOLING UNIT COND PROBE FAULT ae o PROBES CHK SWITCHES CHK CONNECTIONS JUMPER FAULT CONFIG NOT VALID CHECK J 18 ON CONTROL BOARD Troubleshooting Continued Possible Cause Corresponding Temperature Sensor Probe wire s shorted to housing or to each other Evaporator temperature too high Motor failure RPM Sensor failure Motor failure RPM Sensor failure Cabinet circulating fan failure lce build up on evaporator coils Evaporator sensor failure Air intake filter clogged Wiring failure Compressor failure Tube leaking Dispense switch failure Dispense valve leaking Invalid wire harness configuation 28 Troubleshooting Procedures Service Required Service Required Service Required Service Required Service Required Service Required Service Required Service Required Service Required Clean A
7. GND 60HZ 37881 0000 28181 0003 AA WARNING AVERTISSEMENT PTT 11646 0002 3 34766 010407 ELECTRICAL REQUIREMENTS CAUTION The dispenser must remain disconnected from the power source until specified in Electrical Hook Up The LCA 2 and LCC 2 dispensers are 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 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 HEATER RED 10A FUSE WHITE 208 or 10 FUSE WHITE AC 208 240V A C 10A FUSE BLACK 10A FUSE BLACK 10A FUSE BLACK Fig 1 LIMIT SW BLACK Fig 2 LIMIT SW BLACK Fig 3 For all 208 240 Volt Connections Use No 10 AWG Wires suitable for 90 C 194 F
8. current MixProfile The dispenser will shut OFF automatically when finished 34766 042304 MENU SCREEN ACTION DESCRIPTION LOCK FLAVOR Select YES or EXIT Select YES to Lock In sensor calibration NOTE EXIT YES Display will return to Find LF Target if sensor calibration is out of range FLAVORS LOCKED NONE Confirms that sensor calibration was in range and EXIT 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 RT DISP VOLUME LF DISP VOLUME 2 RT DISP VOLUME 1 RT DISP VOLUME 2 WATER DISP VOL 1 0 007 WATER DISP VOL 2 Use the or buttons to adjust the Left portion volume Use the or buttons to adjust the Right portion volume Full Time Portion Control Settings LF DISP VOLUME 1 Use the or buttons to adjust the Normal Left volume Use the or buttons to adjust the Alternate Left volume Use the or buttons to adjust the Normal Right volume Use the or buttons to adjust the Alternate Right volume Use the or buttons to adjust the Normal Hot Water volume Use the or buttons to adjust the Alternate Hot Water volume Set the volume to be dispensed during a Left Portion controlled dispense to 0 640 Oz or 0 18 93L Set the volume to be dispensed during a Right Por
9. CAL LEFT SIDE EXIT YES CAL RIGHT SIDE EXIT YES Place a50 mL 34843 1000 graduated cylinder under the Left dispense tip then activate the Left Dispenser Use the or buttons to enter volume collected Place a 64 Oz 2000 mL container under the Left dispense tip then activate the Left Dispenser Use the or buttons to enter volume collected NONE Select YES to enable Calibration routine Selecting Yes will enable the Left Dispenser Calibration routine see Field Calibration before attempting to calibrate the dispenser The Left Pump will dispense concentrate for 20 seconds then shut off automatically Collect and measure the concentrate dispensed Enter the volume of concentrate measured from the Left Pump in mL not Oz regardless of Preferred Units selected The Left Dispenser will dispense hot water for 20 seconds then shut off automatically Collect and measure the water dispensed Enter the volume of the water measured from the Left dispenser in Oz mL Scroll down to bypass this screen Selecting Yes will enable the Right Dispenser Calibration routine see Pump Calibration prior to calibrating the dispenser 34766 120105 MENU SCREEN If NO skip to next menu CAL RIGHT PUMP PULL DISPENSER CAL RT PUMP VOL 43mL CAL RT WTR FLOW PULL DISPENSER CAL RT WTR VOL 36 007 CAL RIGHT SIDE EXIT YES ACTION Place a50 mL 34843 1000 graduat
10. Dispense Valve ON Delay Eliminates weak mix at the beginning of a dispense Dispense Valve OFF Delay Flushes the mix chamber at the end of a dispense LED diagnostics Selecting YES will light all Front Door LED s Switch Diagnostic Activate switches separately to test Display will indicate which Switch has been activated NOTE Door Interlock switch must be held closed Refill Valve Diagnostic Press YES to momentarily energize the Solenoid CAUTION Inlet Valve will open and water will flow if connected and turned ON Tank Heater Diagnostic Press YES to momentarily energize the Tank Heater Circuit CAUTION AC power will be applied to the Tank Heater Circuit Allows the user the option of entering an Asset Number Default is 000000 Displays the manufacture s Serial Number should be identical to the Serial Number on the machine Data Plate CAUTION Selecting YES will RESET all Programming Functions to the Factory Default settings NOTE On LCC Models the Chiller will have to be resetto the ON condition see Chilled Unit programming function 34766 061605 LOADING THE CONCENTRATE 1 2 own gt Thoroughly mix concentrate by vigorously shaking the product Bag In Box BIB 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 Open the dispenser door and locate the appropriate left or right BIB Adapter fitting Pull the A
11. 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 Ibs 36 3 kg and the LCA 2 Ambient Unit weighs approximately 70 Ibs 31 8 kg If necessary use more than one person when lifting or moving the dispenser Locate and remove the information packets and tube kits from top of packaging and set aside Remove foam packing and cut around the bottom of box Remove the box and the rest of the foam packing Open the dispenser door and remove the drip tray and the lower splash guard panel Set dispenser on the counter where it is to be used CAUTION DO NOT LIFT ON THE DOOR Confirm the disp
12. based on their application and maintenance procedures To enable the automated Rinse Alarm feature refer to RINSE ALARM in Programming the Dispenser 10 34766 050103 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 amp 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 RUN OFF NIGHT MODE 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 fl
13. 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 AWARNING 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 DO NOT OVERLOAD CIRCUIT ALWAYS ELECTRICALLY GROUND THE CHASSIS OR ADAPTOR PLUG DO NOT DEFORM PLUG OR CORD FOLLOW NATIONAL AND LOCAL ELECTRICAL CODES Drug Administration FDA For models installed outside the U S A comply with the applicable Plumbing SanitationCode KEEP COMBUSTIBLES AWAY FAILURE TO COMPLY RISKS EQUIPMENT DAMAGE FIRE OR SHOCK HAZARD READ THE ENTIRE OPERATING MANUAL BEFORE USING THIS PRODUCT 00656 0000 00986 0002E 5 98 1994 Bunn O Matic Corporation 00986 0002 WARNING Optional Field Wiring To reduce the risk of electric shock 208 240 V 25 8 A 6200 W do not remove or open cover 1PH 2 Wire GND 60HZ No user serviceable parts inside or Authorized service personnel only 120 208 240 V 25 8 A 6200 W Disconnect power before servicing 1PH 3 Wire
14. 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 Usea 5 8 1 0 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 he
15. or 34728 1000 for 1 8 1 0 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 Apply lubricant BUNN O MATIC part number M2531 0001 to the new pump tubing 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 Close the compression band reinsert the tension screw into the notch in the pump housing Replace the tubing retainer plate and tighten the thumbscrew Reconnect bag connector to the product box Repeat steps 1 through 7 for the other pump Prime the pumps Refer to Priming the Concentrate Lines section mil ad SO co c 9 on Lubricate between arrows EN Remove Tubing Lubricate New Tube 51 Tension AR 1 b Install New Tubing Completed Installation 7 34766 112502 OPERATING CONTROLS AND INTERFACE Dispense Handles Pull and Hold to dispense product Dispense Switches Push and Release to dispense product for Portion Control Models Stop Switch Momentary switch stops all dispense functions Hot Water Switch Push and Hold switch to dispense hot water from the center disp
16. the Concentrate Check BIB Connector Fittings Check Tubing Installation Check Threshold see Field Calibrating the Emoty BIB Warning Replace BIB see Loading the Concentrate Check BIB Connector Fittings Check Tubing Installation Check Threshold see Field Calibrating the Empty BIB Warning Replace BIB see loading the Concentrate Replace BIB see loading the Concentrate The Dispenser has detected an Remove the lower splash guard to view the 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 25 34766 102103 Screen Displayed LF TARGET RPM TOO HIGH NH TUBE TOO SMALL CHECK DISP RATIO RT TARGET RPM TOO HIGH TUBE SMALL CHECK DISP RATIO LF TARGET RPM TOO LOW TUBE LARGE CHECK DISP RATIO RT TARGET RPM TOO LOW TUBE TOO LARGE CHECK DISP RATIO LEFT BIB EMPTY REPLACE PRODUCT CHECK THRESHOLD RIGHT BIB EMPTY REPLACE PRODUCT CHECK THRESHOLD Troubleshooting Continued Dispenser Diagnostics LCD Display Possible Cause The Tube Size selected for the Left Hand Dispenser is too small for the application The Ratio selected for the Left Hand Dispenser is not correct for the application The Tube Size selected for the Right Hand Dispenser is too small for the application The Ratio selected for the Right Hand Dispense
17. 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 Momentarily press the appropriate dispense switch The dispenser will automatically dispensethe beverage 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 Placethe 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
18. ace all protective shields or safety notices Front Panel LED Display Messages Power LED OFF Dispenser Not plugged in Check Power Cord No AC Power AC Circuit Breaker OFF Check the AC Power Circuit Breaker Service Required Ready LED OFF Usage has exceeded the Check Tank Temp Setting Water Temp Too Low capacity of the Tank Heater 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 Timer Rinse LED FLASHING Dispenser Locked Out Rinse Dispenser see Rinse Procedure Rinse Lockout Enabled Rinse Cycle Required Portion LED ON Alternate Portion Dispenser Activate the Dispenser within 5 sec to Portion Dispense Volume 2 has been selected dispense the pre selected volume Enabled 24 34766 042304 Left Refill LED ON Left BIB Empty Right Refill LED ON Right BIB Empty Left Refill LED FLASHING Empty BIB Lockout Enabled Left Refill LED FLASHING Empty BIB Lockout Enabled All LED s FLASHING Fault Detected Troubleshooting Continued Concentrate BIB is Empty BIB Not properly connected Tubing kinked or blocked Empty BIB warning set too high Concentrate BIB is Empty BIB Not properly connected Tubing kinked or blocked Empty BIB Warning set too high Left Dispenser will not operate Left Dispenser will not operate Replace BIB see Loading
19. ake 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 2 34766 010407 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
20. asurement 07 Gal deg F or mL L deg C LCA Models without Chiller select NO LCC Models with Chiller select YES Selecting Yes will enablethe Rinse Alarm function see Rinse Alarm 34766 120105 MENU SCREEN RINSE TIME 12 Hrs RINSE LOCKOUT NO EXIT YES BIB EMPTY LOCKOUT NO EXIT YES BREW LOCKOUT NO EXIT YES DLY REPEAT DISP OSEC ACTION Use the or buttons to adjust Rinse Alarm delay Select YES to enable Select YES to enable Select YES to enable Use the or buttons to adjust the Delay Time DESCRIPTION Enter the desired time between required Rinse Cycles in hours 8 24 hrs Select YES to Lockout dispensing until the Rinse Alarm has been cleared Default is NO Select YES to Lockout dispensing until the Concentrate BIB has been replaced Default is NO Select YES to Lockout dispensing until the hot water tank is at READY Temp Default is NO 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 Select YES to enable EXIT YES If NO go to CAL RIGHT SIDE menu CAL LEFT PUMP PULL DISPENSE CAL LF PUMP VOL 43mL CAL LF WTR FLOW PULL DISPENSER CAL LF WTR VOL 396 007
21. ater Ready temperature Typically set to the minimum desired dispense temp LCC Models Only Sets the Chilled Cabinet target temperature 50 75 F or 4 24 C Selecting Reset will clearthe Currentaccumulated volume of concentrate dispensed through the Left dispenser Gal Liters Displays the Total accumulated volume of concentrate dispensed through the Left dispenser Not Re settable Gal Liters Selecting Reset will clearthe Currentaccumulated volume of concentrate dispensed through the Right dispenser Gal Liters 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 to access these functions in the future ENTER PASSWORD 0 enter password SET PASSWORD 0 SELECT UNITS ENG EXIT METRIC CHILLED UNIT Select YES or NO NO EXIT YES RINSE ALARM Select YES or NO NO EXIT YES If NO go to BIB EMPTY LOCKOUT menu Use the or buttons to change the password Select the preferred units as you will need it Use the or buttons to Enter the access Code to view the remaining functions Factory Default 0 Enter your own Code to prevent access to the remaining functions 0 to 9999 Usedtoselectthe preferred units of me
22. ater coil is being operated 20 34766 120105 CLEANING amp 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 aily RINSING Open the dispenser door Select Rinse on the Function Selector Switch and Run on the Mode Selector Switch Close the dispenser door Place a 1 2 gal 2 liter container under the appropriate dispense nozzle or nozzles 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 Select
23. d Remove the lower splash guard assembly to access the digital programming module with LCD display Open the cabinet door and set the Function Switch to the Rinse position Close the door Place a large container under the Left dispenser tip then activate and hold the left dispenser 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 amp 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 Bom 31 34766 120105 SCHEMATIC WIRING DIAGRAM LCA 2 LCA 2 PC LCA 2C LCA 2C PC LCC 2 LCC 2C N 200200 N 120 208 240V 3 Wire L2 120 208 240V 3 Wire L2 208 240V 2 Wire 1 F 1 LIMIT 1 THERMOSTAT 1 1 1 BIN TUBE WARMER RED UNIVERSAL PORTION CONTROL POWER SUPPLY OVERFLOW TUBE gt PROTECTION SW WARMER RED RED qmm WHU GRY DOOR wv HI GRY RED BLK RED TOUCHPAD m l 14 1 uc LJ LEFT RPM J3 6 SENSOR RIGHT RPM SENSOR PET
24. d 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 amp 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 RUN OFF NIGHT MODE Filling Cambros or other large containers The dispense
25. dapter fitting down and connect it to the BIB See Fig 2 Place the BIB upright in the machine rotating it into position with the connector facing forward 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 Close the cabinet door Fig 1 PRIMING THE CONCENTRATE LINES 5 7 Open the dispenser door Load concentrate per instructions in the section titled Loading the Concentrate Select Prime on the Function Selector Switch and Run on the Mode Selector Switch Close the dispenser door Place a container under the appropriate dispense tip Activate the appropriate dispenser until concentrate flows from the dispense nozzle Priming may take 5 to 10 seconds 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 3 3 RUN OFF NIGHT MODE 8 18 34766 042304 OPERATING THE PULL amp 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 desire
26. 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 Volume Collected 1 8 Oz sec 53 ml sec w flow restrictor 32 38 02 946 1124 ml 2 5 Oz sec 74 ml sec w o flow restrictor 46 52 0z 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 07 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 gradua
27. ed cylinder under the Right dispense tip then activate the Right Dispenser Use the or buttons to enter volume collected Place a 64 Oz 2000 mL container under the Right dispense tip then activate the Right Dispenser Use the or buttons to enter volume collected NONE DESCRIPTION The Right Pump will dispense concentrate for 20 seconds then shut off automatically Collect and measure the concentrate dispensed Enter the volume of concentrate measured from the Right Pump Oz regardless of Preferred Units selected The Right Dispenser will dispense hot water for 20 seconds then shut off automatically Collect and measure the water dispensed Enter the volume of the water measured from the Right dispenser in Oz mL Scroll down to bypass this screen For Portion Control Dispensers LCA 2 PC LCA 2C PC LCA 2A PC only CAL HOT WTR FLO PULL DISPENSE CAL HOT WTR VOL 34 007 XXX CAL XXX TankTemp FivrGrdRange 10 EXIT LfFlvrGrdTargets RPM XXX CON XXX RtFlvrGrdTargets RPM XXX CON XXX Place a 64 Oz 2000 mL container underthe Hot Water dispensetip then activate the Hot Water Dispenser Use the or buttons to enter volume collected Use the or buttons to adjust temperature reading Use the or buttons to adjust value NONE NONE The Hot Water Dispenser will dispense for 20 seconds then shut off aut
28. ense tip Push and Release switch for Portion Control Models Alternate Portion Control Switch Momentarily pushed to select the Alternate Portion Control Volume 72 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 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 10 Rinse LED Yellow illuminates when the optional preset rinse alarm time has elapsed 12 18 14 15 Night Anti pilfering mode that disables dispensing but keeps the tank heater and chiller if applicable operational Door Interlock Switch Unit will not dispense product if the door is open Power LED Red illuminates when AC power is applied to dispenser Ready LED Green illuminates when the water is at the preset ready temperature Portion LED Yellow illuminates when the portion dispense option has been selected 5 second delay Left Refill LED Yellow illuminates when the Left Concentrate BIB needs rep
29. enser is level on the counter Qi Gee 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 f 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 amp 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 5 34766 010407 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 07 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 Disconnect the dispenser from the AC power source Open the Product Cab
30. f 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 Alarm Mode Disabled None Warning Only 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 Warning w Brew Lockout 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 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
31. he Arrow Down key to scroll through LCD screens until CAL LEFT SIDE appears and press the YES button 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 Keep the graduated cylinder under dispense tip until all the concentrate has dripped out Measure the volume of concentrate collected in the graduated cylinder Acceptable ranges for the volume collected Tubing Size Volume Collected 3 16 tubing 40 47 ml 1 8 tubing 17 22 ml If the amount collected is not within the acceptable range empty the graduated cylinder and repeat STEPS 6 8 If the amount collected is still not within range replace the pump tubing with a new Tube Kit refer to the Tube Replacement Instructions When satisfied with the volume of concentrate collected press the Down Arrow Key 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 29 34766 042304 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
32. inet door Remove the concentrate tube vent line and grommet from mix chamber ports in side the product cabinet Remove the two screws that fasten mix chamber to the control panel Gently pull mix chamber away from dispenser to expose water line connection you may have to rotate it slightly Disconnect FlavorGard sensor wire and hot water tubing from the mix chamber Remove the flow restrictor from the inlet to the mix chamber Reconnect FlavorGard sensor wire and hot water tubing to the mix chamber 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 gio m If you changed the Dispenser Flow Rate you will need to reprogram the dispenser to the new rate see Programming 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 amp keys to enter a volume
33. ir Filter Check wiring harness for breaks shorts open connectors Service Required Check pump amp tubing for proper installation Service Required Service Required Service Required 34766 010407 Field Calibration of the Concentrate Pumps Dispenser Flow Rates The factory set Default Values for the Pump amp 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 2 3 4 5 g 10 11 12 Select PRIME on the Function Selector Switch refer to Priming the Concentrate Lines 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 Stop the Priming and allow the tip to stop dripping Discard the concentrate collected Select NORMAL on the Function Selector Switch Locate the programming module and use t
34. laced Right Refill LED Yellow illuminates when the Right Concentrate BIB needs replaced 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 LCD Display Displays programming menus and fault messages Located behind the splash guard panel POWER READY PORTION 1 0 RINSE REFILL 34766 120105 INITIAL FILL amp 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 amp Basic 1 1 RUN OFF NIGHT MODE s POWER READY PORTION RINSE REFILL STOP HOT WATER 9 34766 112502 FlavorGard Feature FlavorGard is a patented feed back co
35. llation Check Threshold see Field Calibrating the Empty BIB Warning 34766 011604 Screen Displayed OVERFLOW CUP FULL EMPTY CUP HEATING TIME TOO LONG CHECK HEATING CIRCUIT FILL TIME TOO LONG CHECK WATER SUPPLY TANK TEMP SENSOR OUT OF RANGE CHECK FOR BAD CONNECTIONS COOL TEMP SENSOR OUT OF RANGE CHECK FOR BAD CONNECTIONS EVAP TEMP SENSOR OUT OF RANGE CHECK FOR BAD CONNECTIONS TANK TEMP SENSOR OUT OF RANGE CHECK WIRE FOR SHORTS COOL TEMP SENSOR OUT OF RANGE CHECK WIRE FOR SHORTS Troubleshooting Continued Possible Cause Refill valve stuck open Faulty refill probe Faulty overflow switch Tank Heater failure Triac failure Tank Temp sensor failure Water shut off to dispenser Inlet Solenoid Valve failure Corresponding Temperature Sensor Probe wire s broken or disconnected Corresponding Temperature Sensor Probe wire s broken or disconnected Product cabinet temperature too low Corresponding Temperature Sensor Probe wire s broken or disconnected Evaporator temperature too low Corresponding Temperature Sensor Probe wire s shorted to housing or to each other Corresponding Temperature Sensor Probe wire s shorted to housing or to each other Product cabinet temperature too high 27 Troubleshooting Procedures Service Required Service Required Service Required Service Required Service Required
36. nly 34 34766 092706
37. ntrol 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 o
38. 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 amp keys to enter a volume of 50 Oz 1478 mL This will recalibrate the Right dispenser to the new rate T 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 6 34766 120105 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 7ube 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 0z sec 3 16 1 0 TUBING 1 8 1 0 TUBING 53 ml sec 2 5 02 3 16 1 0 TUBING 1 8 I D TUBING 74 ml sec Examples 1 Dispenser Flow Rate of 2 5 Oz sec 74 mL sec and a Mix Ratio of 35 1 use 3 16 1 0 Tubing 2 Fora Dispenser Flow Rate of 1 8 Oz sec 53 mL sec and a Mix Ratio of 60 1 use 1 8 1 0 Tubing Tube kits can be purchased from BUNN O MATIC Part 34727 1000 for 3 16 1 0 Tubing
39. omatically Collect and measure the water dispensed Enter the volume of the water measured from the Hot Water Dispenser in Oz mL Adjust the display reading to match a calibrated probe inserted next to the Tank Sensor F C Used to set the maximum adjustment the Flavor Guard feature is allowed to make 3 15 Displays the Left Dispenser target RPM and Conductance Reading Diagnostics Only Displays the Right Dispenser target RPM and Conductance Reading Diagnostics Only 34766 120105 MENU SCREEN BIB EMPTY gt 500 XX REFILL gt 155 EXIT EXIT 4 WTR START DELAY 158 WTR STOP DELAY 158 TEST LED S NO EXIT YES TEST SWITCHES UseSwitchToTest TEST REFILL TEST HEATER EXIT YES EXIT YES ENTER ASSET 000000 SERIAL LCA 0000000 FACTORY DEFAULTS NO YES ACTION Use the or buttons to adjust empty BIB threshold Use the or buttons to adjust Refill threshold Use the or buttons to adjust delay time Use the or buttons to adjust delay time Select YES or NO NONE Momentarily depress YES Momentarily depress YES Use the or buttons to adjust the ASSET NUMBER NONE Select YES or NO DESCRIPTION Used to set the Conductance Threshold for the Empty BIB warning Default is 500 Used to set the Conductance Threshold for the Tank Refill Probe
40. or 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 concen
41. or 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 e Shorting the terminals or the application of external voltages to electronic components may result in component or circuit board failure e 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 e 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 e Exercise extreme caution when servicing electrical equipment e 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 e Follow recommended service procedures e Repl
42. owing 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 11 34766 042304 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 TANK TEMP XXX Use the Down Arrow Key to enter AMBIENT UNIT Programming Functions TANK TEMP XXX CABINET TEMP XX L DISPENSE RATIO Use the or buttons to 354 4 adjust the Mix Ratio Usethe Down Arrow Key to enter Programming Functions SET LF TUBE SIZE Select tube size 1 8 EXIT 3 16 DISPENSE RATIO Use the or buttons to 35 1 adjust the Mix Ratio SET RT TUBE SIZE Select tube size 1 8 EXIT 3 16 FLAVOR GUARD Select YES toactivate Select NO EXIT YES NO to deacti
43. r 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 19 34766 042304 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
44. r is not correct for the application The Tube Size selected for the Left Hand Dispenser is too large for the application The Ratio selected for the Left Hand Dispenser is not correct for the application The Tube Size selected for the Right Hand Dispenser is too large for the application The Ratio selected for the Right Hand Dispenser is not correct for the application Concentrate BIB is Empty BIB Not properly connected Tubing kinked or blocked Empty BIB Warning set too high Concentrate BIB is Empty BIB Not properly connected Tubing kinked or blocked Empty BIB Warning set too high 26 Troubleshooting Procedures Refer to Selecting the Correct Pump Tubing section of the manual Refer to recommended Dispense Ratio on the product label Refer to Selecting the Correct Pump Tubing section of the manual Refer to recommended Dispense Ratio on the product label Refer to Selecting the Correct Pump Tubing section of the manual Refer to recommended Dispense Ratio on the product label Refer to Selecting the Correct Pump Tubing section of the manual Refer to recommended Dispense Ratio on the product label Replace BIB see loading the Concentrate Check BIB Connector Fittings Check Tubing installation Check Threshold see Field Calibrating the Empty BIB Warning Replace BIB see loading the Concentrate Check BIB Connector Fittings Check Tubing insta
45. ted 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 Ifthe amount collected is not within the acceptable range empty the container and repeat steps 2 amp 3 5 Ifthe 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 30 34766 120105 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 FlavorGard 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 Threshol
46. tion controlled dispense to 0 640 Oz or 0 18 93L Set the desired portion control volume to be dispensed during a Normal Left dispense to 0 640 07 0 18 931 Set the desired portion control volume to be dispensed during a Alternate Left dispense to 0 640 Oz 0 18 931 Set the desired portion control volume to be dispensed during a Normal Right dispense to 0 640 02 0 18 931 Set the desired portion control volume to be dispensed during a Alternate Right dispense to 0 640 Oz 0 18 931 Set the desired portion control volume to be dispensed during a Normal Hot Water dispense 0 640 Oz 0 18 931 Set the desired portion control volume to be dispensed during a Alternate Hot Water dispense 0 640 Oz 0 18 931 34766 120105 MENU SCREEN TANK TEMP 180 EXIT READY TEMP 175 EXIT di c gt 2 rri rn z 5 ce LF PRODUCT DISP 0GAL RESET LF PRODUCT DISP NONE 0GAL RT PRODUCT DISP 0GAL RESET RT PRODUCT DISP NONE 0GAL t j d L ACTION Use the or buttons to adjust the target Temp Use the or buttons to adjust the target Temp Use the or buttons to adjust the target Temp Select RESET to clear total Select RESET to clear total DESCRIPTION Sets the water Tank temperature 120 200 F or 49 93 C Sets the hot w
47. trate 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 21 34766 042304 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 Loosen the thumbscrew securing the tubing retainer plate to the pump housing Set it and the retainer plate aside Depress the tension screw and remove it from the notch in the pump housing releasing the spring tension on the pump band Open the compression band and gently pull the pump tube from around the pump s rotor Inspect the pump bands for signs of wear Replace if necessary Apply lubricant BUNN O MATIC part number M2531 0001 to the new pump tubing s rotor side Insert the tube onto the mix chamber port then wrap the new tubing around the pump rotor making s
48. ure that the elbow and clamps end up on the bottom side of the pump housing Depress the tension screw and insert it in the notch in the pump body reapplying spring tension on the pump band Replace the tubing retainer plate and tighten the thumbscrew 10 Repeat steps 1 through 9 for the other pump 2 0 Lubricate between arrows c N gt Remove Retaining Plate Release Spring Tension Remove Tubing Lubricate New Tube elle Rn Install New Tubing Completed Installation 22 34766 112502 DRAINING THE HOT WATER TANK CAUTION The dispenser must be disconnected from the power source throughout these steps 9 wo RomN Disconnect the dispenser from the power source Shut off and disconnect the incoming water supply Remove the front splash panel Pull out drain tube to empty into a sink or a container with a minimum of five gallon capacity Make sure drain clamp is closed Then remove drain plug 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 Close drain clamp insert drain plug place drain tube back into machine and replace splash panel Note The dispenser must be refilled using the nitial Fill amp Heat steps before reconnecting the power source 23 34766 112502 Troubleshooting A troubleshooting guide is provided to suggest probable causes and remedies f
49. vate L If NO go to LF DISP VOLUME menu LF TASTE OK Select YES or NO NO EXIT YES FIND LF TARGET Place a 16 Oz 500 mL cup PULL DISPENSE under the Left dispense tip then activate the Left dispenser RT TASTE OK Select YES or NO NO EXIT YES FIND RT TARGET Place a 16 Oz 500 mL cup PULL DISPENSE under the Right dispense tip then activate the Right dispenser DESCRIPTION Normal Display for LCA models No Chiller Normal Display for LCC models with Chiller Enter the desired Mix Ratio for the concentrate used in the Left dispenser 20 1 100 1 Enter Pump Tube Size to be used in the Left metering pump see Tube Selection Chart Enter the desired Mix Ratio for the concentrate used in the Right dispenser 20 1 100 1 Enter Pump Tube Size to be used in the Right metering pump see Tube Selection Chart Select Yes if you are ready to calibrate the Flavor Guard sensor Select NO if you do not wish to use this feature see Flavor Guard 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 Calibrates the Left FlavorGard sensor to the current MixProfile The dispenser will shut OFF automatically when finished 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 Calibrates the Right FlavorGard sensor to the
50. 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 m

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