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Bunn LCA-2 PC Schematic Wiring Diagram, LCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C, 34766.1

Models: LCA-2 PC LCA-2A LCC-2

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SCHEMATIC WIRING DIAGRAM

SCHEMATIC WIRING DIAGRAM

LCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C

(Older models may not have the Master Sw., 10 Amp Fuses or Product Cabinet Fan)

L1

BLK-14 RED-14

N (120V 2-Wire)

L2 (208-240V 2-Wire)

MASTER ON/OFF

GRN

SWITCH

BLK-14

LIMIT

Early Models

THERMOSTAT

TRIAC

SW. & THERMOSTAT

TANK HEATER

BLK-14 1

2

BLK-14

BLU-14

BLU-14

RED-14

RED-14

3

4

BLK

Fuse 1

BLK

WHI

Fuse 1

WHI

TUBE

10 AMP

TAN

PORTION

10 AMP

WARMER

RED

UNIVERSAL

CONTROL

OVERFLOW

BLK

POWER SUPPLY

TUBE

PROTECTION SW

RED

RED

WHI/GRY

WARMER

BLK

WHI

-V

N(L2)

DOOR

RED

+V

L(L1)

BLK

WHI/GRY

PRODUCT

GRN

RED/BLK

CABINET

BLK

-V

GRN

RED

SOL

FAN

RED

+V

RED

HOT WATER

TOUCHPAD

RED

SOL

BRN/BLK

1

RIGHT DISP

2

YES (+)

3

TAN BLK

WHI

RED GRN

BLK

WHI

GRY ORN BLK BLK

RED

BRN/WHI

4

SOL

EXIT

5

WHI/BLU

LEFT DISP

6

J2-1

NO (-)

J1-1

J1-4

J2 -8

J15-1

J15-4

J3-1

7

RED

RED

SOL

BLU/BLK

WHI/RED

RED

RED

REFILL

LEFT RPM

J14-1

J3-6

BLK

BLK

BLK

SENSOR

GRN

BLU

RED

RED

C

J4-1

RED

RED/BLK

RIGHT RPM

BLK

BLK

O

BRN/WHI

SENSOR

GRN

VIO

J14-7

BRN/BLK

N

VIO

J4-5

WHI/GRY

LEFT

J7-1

T

BLK

RED

BLU

BLU/BLK

PUMP

WHI/YEL

RED

R

J5-1

YEL

YEL

O

ORN

J7-5

L

J5-3

BLK

BLK

RIGHT

RED

BLK

P

J16-1

BLU

PUMP

ORN

RED

ORN

C

WHI/ORN

WHI/ORN

WHI/ORN

WHI/YEL

J7-10

B

WHI/YEL

J16-5

PNK

O

VIO

J8-1

BLK

A

BLK

GRN

J8-3

R

BLK

BLK ORN

J18-1

D

BLK

GRN

J16-12

BLK

1

P

WHI

R

BLK

GRN

J18-6

WHI/YEL

BLK

WHI/ORN

BLK

O

B

E

LEFT

RIGHT

CONDUCTANCE

CONDUCTANCE

GRN

SENSOR

SENSOR

t

DISPENSERS WITH

20

15

10

5

1

PORTION CONTROL

J6-

J6-

J6-

J6-

J6-

LF DISP. SW.

T

GRN

GRN

GRN/WHI

BLU/WHI

BLU/BLK

ORN GRN/BLK

WHI/BLK

WHI RED/BLK RED/WHI ORN/BLK WHI/GRY

WHI/VIO WHI/YEL TAN RED

BLK

BLK VIO

RED WHI/BLU

WHI/RED BLK

BLK BLU

S

J1-1

BLU/WHI

W

I

RED/BLK

C

J1-5

ORN/BLK

H

GRN/WHI

BLK WHI

RED BLK

WHI WHI

N

RED BLK

BLK

A

D

RED/WHI

RED

L

BLK

RT DISP. SW.

E

J1-10

BLU/BLK

HEAT SINK

D

RED

PELTIER

RED BLK

B

GRN/BLK

THERMISTOR

t

O

WHI/BLK

A

ORN

R

D

WHI

J1-16

SELECTOR

SELECTOR

COOLING CABINET

t

SWITCH

SWITCH

CABINET

NITE

WHI/GRY

RINSE

WHI/YEL

THERMISTOR

BLK

BLK

120 VOLTS AC 2 WIRE

RUN

WHI/VIO

PRIME

TAN

120/208-240 VOLTS AC 3 WIRE

BLK

208-240 VOLTS AC 2 WIRE

LCC Models only

SINGLE PHASE 50/60HZ

34641.0005A 11/12© 2012 BUNN-O-MATIC CORPORATION

35	34766.1 010313

Image 35

Bunn LCA-2 PC Schematic Wiring Diagram, LCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C, LCC Models only, 34766.1, Switch

Contents

34766.0001A 01/13 2013 Bunn-O-Matic Corporation INSTALLATION & OPERATING GUIDELCA-2 LCA-2A LCA-2 PC LCC-2 BUNN-O-MATIC CORPORATIONBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY INTRODUCTION CONTENTSCLEAN WEEKLY USER NOTICESCLEAN AIR FILTER Optional Field WiringELECTRICAL REQUIREMENTS FIELD WIRING TERMINAL BLOCK DIAGRAMModels without Master ON/OFF Switch FIELD WIRING TERMINAL BLOCK DIAGRAM Models with Master ON/OFF SwitchPLUMBING HOOK-UP PLUMBING REQUIREMENTSELECTRICAL HOOK-UP INITIAL SET-UP INSTALLING THE DRIP TRAY AND FLIP DOWN CUP TRAYOPERATING CONTROLS AND INTERFACE 1.8 Oz/sec SELECTING THE CORRECT PUMP TUBINGDispense RateReprogramming the Dispenser Flow Rate SETTING DISPENSER FLOW RATERemoving the restrictors Procedure for Adjusting the Mix Ratio to Taste ADJUSTING MIX RATIOSAlarm Mode FlavorGard FeatureRinse Alarm Feature Brew Temperature Lockout Feature BIB Empty Lockout FeatureDESCRIPTION PROGRAMMING THE DISPENSERMENU SCREEN ACTIONMENU SCREEN LOCK FLAVOR ? EXIT YES FLAVORS LOCKED EXIT LF DISP VOLUME 4.0oz + RT DISP VOLUME 4.0oz +LF DISP VOLUME 4.0oz + LF DISP VOLUME 0.0oz + RT DISP VOLUME 4.0oz + RT DISP VOLUME 0.0oz + WATER DISP VOL 0.0oz + WATER DISP VOL 0.0oz +see Rinse Alarm LF PRODUCT DISP 0GAL RESET? LF PRODUCT DISP 0GAL RT PRODUCT DISP0GAL RESET? RT PRODUCT DISP 0GAL ENTER PASSWORD 0 + SET PASSWORD ? 0 + SELECT UNITS ENG EXIT METRICCAL LF WTR FLOW ? PULL DISPENSER MENU SCREEN RINSE TIME ? - 12 Hrs + RINSE LOCKOUT ? NO EXIT YESBIB EMPTY LOCKOUT NO EXIT YES BREW LOCKOUT ? NO EXIT YES CAL LEFT PUMP ? PULL DISPENSECAL HOT WTR FLO ? PULL DISPENSE CAL RIGHT PUMP ? PULL DISPENSER CAL RT PUMP VOL - 43mL +CAL RT WTR FLOW PULL DISPENSER CAL RIGHT SIDE ? EXIT YESMENU SCREEN BIB EMPTY - EXIT + XX REFILL - 155 - EXIT + WTR START DELAY 15SEC + WTR STOP DELAY 15SEC + TEST LED’S ?NO EXIT YES TEST SWITCHES ? UseSwitchToTest TEST REFILL ? EXIT YES LATEST FAULT NO FAULTS FACTORY DEFAULTS NO YESOperations INITIAL FILL & HEATPRIMING THE CONCENTRATE LINES LOADING THE CONCENTRATEcoil is being operated OPERATING THE PULL & HOLD DISPENSERFilling Cambros or other large containers Filling Cambros or other large containers OPERATING THE PRESET PORTION CONTROL DISPENSERModels LCA-2 PC, LCA-2C PC, LCA-2A PC Daily PARTS WASHING CLEANING & PREVENTATIVE MAINTENANCEGeneral Cleaning and Sanitizing Procedures Daily RINSINGREPLACING THE PUMP TUBING PREVENTIVE MAINTENANCEDRAINING THE HOT WATER TANK Front Panel LED Display Messages TroubleshootingPower LED “OFF” see Optional Field WiringEmoty BIB Warning Troubleshooting ContinuedInternal Fault Left Refill LED “ON”the Empty BIB Warning Troubleshooting Continued Dispenser Diagnostics-LCD DisplayPossible Cause Check Threshold, see Field CalibratingPossible Cause Screen DisplayedTroubleshooting Continued Troubleshooting ProceduresPossible Cause Troubleshooting ContinuedService Screen DisplayedCalibrating the Left Side Dispenser Field Calibration of the Concentrate Pumps / Dispenser Flow RatesVolume Collected ContinuedField Calibrating the Hot Water Flow Rate Calibrating the Right Side DispenserCalibrating The Empty BIB Threshold Field Calibrating the Empty BIB WarningLCC Models only SCHEMATIC WIRING DIAGRAMSWITCH LCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C230 VOLTS AC SCHEMATIC WIRING DIAGRAM LCC-2A/LCA-2A/LCA-2A, PC2 WIRE SINGLE PHASE