Manuals / Bunn / Kitchen Appliance / Food Warmer

Bunn manual COOLANT SCHEMATIC ULTRA-1

Models: ULTRA-1

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Page 55

COOLANT SCHEMATIC ULTRA-1

EVAPORATOR

THERMISTOR TEMPERATURE SENSOR

TO CONTROL BOARD

55

CAP TUBE

SOLENOID VALVE

ELECTRONICALLY

CONTROLLED

SERVICE VALVE

FOR COOLANT CHARGE

INFORMATION SEE DECAL

ON SIDE PANEL

COPPER TUBE

.312” O.D. X .032”

FILTER DRYER

COMPRESSOR

COOLANT SCHEMATIC ULTRA-1

CONDENSER

COPPER TUBE

.25” O.D. X .030”

41084 102709

COPPER TUBE

.25” O.D. X .030”

SUCTION

ACCUMULATOR

SERVICE VALVE

FOR COOLANT CHARGE INFORMATION SEE DECAL ON SIDE PANEL

Image 55

Bunn manual COOLANT SCHEMATIC ULTRA-1

Contents

41084.0000B 04/10 2009 Bunn-O-MaticCorporation SERVICE & REPAIR MANUALULTRA-1 ULTRA-2 BUNN-O-MATICCORPORATIONBUNN-O-MATICCOMMERCIAL PRODUCT WARRANTY USER NOTICES CONTENTSPreventive Maintenance ServiceINTRODUCTION Safety firstBasic Maintenance Fault codesDISPLAY TEMP & TORQUE TEMP & TORQUE SCREEN161h OPERATING CONTROLS ULTRA-1 OPERATING CONTROLS ULTRA-2 RECOMMENDED DAILY CLEANING ULTRA-2shown RECOMMENDED DAILY CLEANING Continued Materials required Auto-fillCleaning InstructionsWith Brixing Pump Installed Sanitizing ProcedureNORMAL OPERATION PREVENTIVE MAINTENANCEPOSSIBLE CAUSES FOR FALSE READINGS Description REQUIRED REGULAR MAINTENANCE Semi AnnualKit Contents INSTRUCTIONSREQUIRED REGULAR MAINTENANCE Continued No Power TROUBLESHOOTINGTROUBLESHOOTING cont Chills but won’t freeze TROUBLESHOOTING cont No cooling at all thick enough TROUBLESHOOTING cont Freezes, but notAuger won’t turn TROUBLESHOOTING cont NoiseTorque Sensor Error TORQUE SENSOR SHORTED TROUBLESHOOTING cont TORQUE SENSOR ERRORTORQUE SENSOR OPEN Thermistor unplugged or break in wiring TROUBLESHOOTING cont Temperature Sensor ErrorTEMPERATURE SENSOR SHORTED TEMPERATURE SENSOR OPEN“FILTER NEEDS CLEANING” TROUBLESHOOTING cont Clean Filter Messages“FILTER NEEDS CLEANING!!!” COMPONENT ACCESS PANELS SERVICEFIG. 2 AUGER MOTOR TERMINALS SERVICEcont AUGER MOTORSFIG. 1 AUGER MOTORS MOTOR COIL RESISTANCEFIG. 4 AUGER MOTOR CAPACITOR TERMINALS SERVICE cont AUGER MOTOR CAPACITORSERVICE cont AUGER SHAFT ASSEMBLY SERVICE cont AUGER SHAFT ASSEMBLYcont SERVICE cont CIRCUIT BREAKER Location SERVICE contFIG. 16 COMPRESSOR START RELAY TERMINALS SERVICE cont120V DISPENSERS 230V DISPENSERSRemoval and Replacement Compressor Assy SERVICE contCOMPRESSOR AMERICOLD ULTRA-2cont SERVICE cont COMPRESSOR EMBRACO ULTRA-2 Model T-2168 SERVICE cont COMPRESSOR EMBRACO ULTRA-2contModel T-2155 FIG. 22 THERMAL OVERLOAD PROTECTOR TERMINALSSERVICE cont COMPRESSOR EMBRACO ULTRA-2cont 3.Thermal Overload Protector SERVICE cont COMPRESSOR APPLIANCES ULTRA-11.Compressor Start Relay 2.Compressor Run CapacitorCOMPRESSOR APPLIANCES ULTRA-1cont SERVICE contFIG. 26 RELAY TERMINALS FIG. 28 COMPRESSOR CAPACITOR TERMINALSCOMPRESSOR APPLIANCES ULTRA-1cont SERVICE contCompressor Assy SERVICE cont COMPRESSOR DANFOSS ULTRA-1Bcont FIG. 30 RELAY TERMINALS SERVICE cont COMPRESSOR DANFOSS ULTRA-1BcontSERVICE cont RELAY or CONTACTOR on Early Models SERVICE cont CONTROL BOARD SERVICE cont COOLING DRUM ALIGNMENT SERVICE cont FAN - ULTRA-2 SERVICE cont FAN - ULTRA-1SERVICE cont HOT GAS TEMPERATURE SENSOR FIG. 45 LAMP CORD ASSY SERVICE cont LAMP CORD ASSYSERVICE cont LAMP CORD CONNECTOR SERVICE cont LAMP HOLDER/SOCKET ASSEMBLY SERVICE cont LAMP RELAY SERVICE cont MEMBRANE SWITCH ULTRA-2SERVICE cont MEMBRANE SWITCH ULTRA-1FIG. 59 SOLENOIDS SOLENOIDSSERVICE cont SERVICE cont TEMPERATURE SENSOR DO NOT TURN ON AUGERS SERVICE cont TORQUE SENSOR CIRCUIT BOARDSERVICE cont TRANSFORMERCOOLANT SCHEMATIC ULTRA-1 COOLANT SCHEMATIC ULTRA-2 ULTRA-1TRIACS TRIAC MAP for ULTRA-1LIQUID AUTO-FILLBOARD TRIAC MAPS for ULTRA-2ULTRA-2TRIACS Input and Output Chart ULTRA-1 41084 Input and Output Chart ULTRA-2 41084 41084