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Bunn ULTRA-1 manual SERVICE cont LAMP HOLDER/SOCKET ASSEMBLY

Models: ULTRA-1

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SERVICE (cont.)

SERVICE (cont.)

LAMP HOLDER/SOCKET ASSEMBLY

ULTRA-2 shown

FIG. 49 LAMP HOLDER/SOCKET ASSEMBLY

Location:

The lamp holder/socket assemblies are located inside the hopper covers.

Test Procedures:

1.Disconnect the lamp cord assembly from the lamp cord connector.

2.Remove the lamps from the lamp holder/socket assembly.

3.With a voltmeter, check the voltage across the pin sockets in the plugs in the “DAY” mode. Reconnect the lamp cord to the lamp cord connector. The indication must be approximately 12.6 volts dc.

4.Disconnect the lamp cord from the lamp cord con-

nector.

If voltage is present as described, the lamp holder/ socket assembly is operating properly.

If voltage is not present as described, replace the lamp holder/socket assembly.

5.Check for continuity across the terminals on the lamps.

If continuity is present as described, the lamps are operating properly.

If continuity is not present as described, replace the lamp.

Removal and Replacement:

1.Disconnect the lamp cord assembly from the lamp cord connector assembly in the top of the auger motor cover.

2.Remove the hopper cover with the lamp cord as- sembly from the hopper.

3.Remove hopper cover liner from the hopper cover.

4.Cut off the closed-end splices connecting lamp cord assembly to the lamp holder/socket assembly.

5.Remove the two lamps.

6.Remove the two #2-56 screws and elastic lock nuts securing the lamp holder/socket assembly to the mounting bracket. Remove lamp holder/socket assembly and discard.

7.Install new lamp holder/socket assembly on mount- ing bracket using two #2-56 screws and elastic lock nuts.

8.Reinstall lamps.

9.Strip the wires from the lamp cord assembly ap- proximately .38”.

10.Using the two wire nuts, supplied, connect the lamp cord assembly to the new lamp holder/socket assembly wires.

11.Reinstall the hopper liner to the bottom of the hop- per cover.

12.Reinstall the hopper cover to the hopper.

13.Plug in the lamp cord assembly to the lamp cord connector assembly on left top of the auger motor cover.

14.Refer to Fig. 50 when reconnecting the wires.

P1322

FIG. 50 LAMP HOLDER/SOCKET ASSEMBLY WIRES

47	41084 102709

Image 47

Bunn ULTRA-1 manual SERVICE cont LAMP HOLDER/SOCKET ASSEMBLY

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 codes161h TEMP & TORQUE SCREENDISPLAY TEMP & TORQUE 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 ProcedurePOSSIBLE CAUSES FOR FALSE READINGS PREVENTIVE MAINTENANCENORMAL OPERATION 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 OPEN TROUBLESHOOTING cont TORQUE SENSOR ERRORTorque Sensor Error TORQUE SENSOR SHORTED 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 DISPENSERSCOMPRESSOR AMERICOLD ULTRA-2cont SERVICE contRemoval and Replacement Compressor Assy 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 Assy SERVICE contCOMPRESSOR APPLIANCES ULTRA-1cont 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-1SERVICE cont SOLENOIDSFIG. 59 SOLENOIDS 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-1ULTRA-2TRIACS TRIAC MAPS for ULTRA-2LIQUID AUTO-FILLBOARD Input and Output Chart ULTRA-1 41084 Input and Output Chart ULTRA-2 41084 41084