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Bunn HC-3 service manual Ballast, SERVICE cont, Disconnect the dispenser from the power source

Models: HC-3

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BALLAST

SERVICE (cont.)

BALLAST
FIG. 4 BALLAST	P1199.40
FIG. 4 BALLAST
Location

The front door lamp ballast is located on the front center of the base behind the front panel.

Test Procedure

1.Disconnect the dispenser from the power source.

2.Disconnect the two terminal plug of the door in- terconnect harness from the connector of the ballast.

3.Check the voltage across the white wire and the blue wire terminal of the ballast with a voltmeter. Connect the dispenser to power source. The in- dication must be:

a)120 volts ac for two wire 120 volt models.

b)120 volts ac for three wire 120/208 volt models or 120/240 volts models.

c)240 volts ac for two wire 240 volt models.

If voltage is present as described the ballast is oper- ating properly.

If voltage is not present as described, replace the ballast.

Removal and Replacement

1.Disconnect the wires from the ballast.

2.Remove the two #8-32 keps nuts securing the ballast to the dispenser base.

3.Remove and discard ballast.

4.Install new ballast over the two weld studs on the dispenser base and secure with two #8-32 keps nuts.

5.Refer to the illustration below when reconnect- ing the wires.

WHI to Main	BLK to Terminal Block
WHI to Main
Wiring Harness
WHI & BLU to
Door
Interconnect
Harness
120V, 120/208V, & 120/240V Models
	WHI to Main
	Wiring Harness
RED & BLU to
Door
Interconnect
Harness
	BLK to Terminal Block
	240V Models
	P1202.45
FIG. 5 BALLAST TERMINALS

15	27591 031597

Image 15

Bunn HC-3 service manual Ballast, SERVICE cont, Disconnect the dispenser from the power source, BLK to Terminal Block

Contents

DISCONTINUED VERSION The information in this manual SERIAL # HC00025000 - UPBUNN HC-2 HC-3INTRODUCTION WARRANTY27620.0000 USER NOTICES26525.0000 12368.0002PLUMBING REQUIREMENTS INITIAL SET-UPELECTRICAL REQUIREMENTS ELECTRICAL HOOK-UPDISPENSER USE CLEANINGADJUSTMENTS INITIAL fill & heatTROUBLESHOOTING DRAINING THE HOT WATER TANKHOPPER DISPENSE RATE OF PRODUCT REMEDY TROUBLESHOOTING contPROBLEM PROBABLE CAUSEPROBABLE CAUSE TROUBLESHOOTING cont PROBLEMRefer to Service - Limit Thermo testing procedures. See pageREMEDY TROUBLESHOOTING contPROBLEM PROBABLE CAUSEREMEDY TROUBLESHOOTING contPROBLEM PROBABLE CAUSERemove and clean lime off the tank TROUBLESHOOTING CONT PROBLEMRefer to Service - Lamp, see page Refer to Service - Lamp Holder forAUGER DRIVE COMPONENTS SERVICECOMPONENT ACCESS ContentsSERVICE AUGER DRIVE COMPONENTS contAUGER DRIVE COMPONENTS cont SERVICE contBLK to Terminal Block BALLASTSERVICE cont 1. Disconnect the dispenser from the power sourceCONTROL THERMOSTAT SERVICE contMECHANICAL CONTROL THERMOSTAT cont SERVICE contFIG. 7 THERMOSTAT TERMINALS DISPENSE SWITCH SERVICE contFIG. 9 DISPENSE SWITCH CONNECTORS SERVICE cont FIG. 12 MIXING/WHIPPER CHAMBER FROTHER AND WHIPPER MOTORSERVICE cont FIG. 11 FROTHER AND WHIPPER MOTORSERVICE cont FROTHER AND WHIPPER MOTOR contSERVICE cont HOPPER DELAY BOARDSolenoid HOT/COLD SWITCH OptionalSERVICE cont WHI/BRN to Main Harness WHI/RED to Main Harness WHI/YEL to ColdLAMP REPLACEMENT Refer to Fig LAMP HOLDERSERVICE cont SERVICE cont LAMP STARTER and SOCKET 120V, 120/208V & 120/240V Models OnlySERVICE cont LEVEL CONTROL BOARD AND LEVEL PROBELIMIT THERMOSTAT SERVICE contLEVEL CONTROL BOARD AND LEVEL PROBE cont SERVICE cont OVERFLOW PROTECTION SWITCHSERVICE cont RUN/RINSE SWITCHSERVICE cont SOLENOID VALVE COLD WATER - OPTIONALSOLENOID VALVES DISPENSE SERVICE contSOLENOID VALVE COLD WATER - OPTIONAL cont SOLENOID VALVES DISPENSE cont SOLENOID VALVE INLETSERVICE cont WHI from Terminal Block VIO from Liquid Level Board SOLENOID VALVE INLET contTANK HEATER SERVICE contTANK HEATER SWITCH TANK HEATER contSERVICE cont TANK HEATER SWITCH cont SERVICE contTRANSFORMER 240V TWO WIRE MODELS ONLY SERVICE cont TRANSFORMER 240V TWO WIRE MODELSONLYcont120 VOLTS AC - 2 WIRE OR SCHEMATIC WIRING DIAGRAM HC-2, & HC-3120/208-240 VOLTS AC - 3 WIRE ConfigurationSINGLE PHASE SCHEMATIC WIRING DIAGRAM HCA-2, & HCA-32 WIRE Configuration