Bunn HC-3 30 or, Weak product Water temperature, Tip with a thermometer, Whipper motor, Frother

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TROUBLESHOOTING (cont.)
PROBLEM	PROBABLE CAUSE	REMEDY
Product overflows container	1. Dispense switch	Refer to Service - Dispense
		Switch for testing procedures. See
		page 18
	2. Dispense solenoid valve	Remove the solenoid valve and
	(Hot or Cold)	clear any obstructions. Rebuild or
		replace the valve if necessary. See
		page 30 or 31
Weak product	1. Water temperature	Place an empty container beneath
		the dispense tip. Initiate a dispense
		cycle and check the water tempera-
		ture immediately below the dispense
		tip with a thermometer.
		(A) Reading for mechanical thermo-
		stat models should be 180° F to 200° F
		(see thermostat temperature settings
		decal in USER NOTICES on page 3.
		(B) Reading for electronic thermo-
		stat should be185° F to 190° F.
		Adjust the control thermostat to in-
		crease or decrease the water tem-
		perature. Replace if necessary.
	2. Whipper motor	Refer to Service - Whipper Motor for
		testing procedure. See page 20
	3. Frother	Refer to Service - Frother Compo-
		nents. See page 20
	4. Dispense solenoid valve	Refer to Service - Dispense Solenoid
	(Hot or Cold)	Valve for test procedures. See page
		30 or 31
	5. Auger drive	Refer to Service - Auger Drive Com-
		ponents. See page 12
	6. Auger spring	Refer to Service - Auger Drive Com-
		ponents. See page 12
	7. Auger motor	Refer to Service - Auger Drive Com-
		ponents. See page 14

10	27591 031597

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Contents Bunn HC-2 Serial # HC00025000 UPWarranty Introduction12368.0002 User Notices27620.0000 Electrical HOOK-UP Initial SET-UPElectrical Requirements Plumbing RequirementsDispenser USE CleaningAdjustments Cold Beverage SET-UP OptionalDraining the HOT Water Tank TroubleshootingHopper Dispense Rate of Product Troubleshooting Problem Probable Cause RemedyProblem On stainless steel surfaces can Problem Probable CauseDripping from dispense tip Lime build-up Ing in serious leaks30 or Weak product Water temperatureTesting procedure. See Tip with a thermometerTroubleshooting Problem Probable Cause RemedyContents ServiceComponent Access Auger Drive ComponentsWasher Auger Motor Locknut Dust Seal Shoulder Screw Auger Drive ComponentsIf voltage is present as described, proceed to #5 Hopper AssyService Right HC-2Ballast Test ProcedureLocation Location Mechanical Thermostat Remove temperature probe from the tankControl Thermostat Electronic Thermostat OptionalControl Thermostat Thermostat TerminalsDispense Switch Dispense SwitchTest Procedures FANRing Frother and Whipper MotorSteam Collector #6-32 Screw Mixing Chamber Pull the mixing chamber 2 out of the whipper chamberFrother and Whipper Motor Whipper Motor TerminalsHopper Delay Board Reconnect the eight pin connector to the hopper delay boardHOT/COLD Switch Optional Disconnect the wires from the switch termi- nalsLamp Holder Lamp Replacement Refer to FigDoor Assy Service Level Control Board and Level Probe Level Control Board and ProbeLevel Board Terminals Limit ThermostatOverflow Protection Switch Overflow Protection SwitchRUN/RINSE Switch RUN/RINSE SwitchSolenoid Valve Cold Water Optional Cold Water Solenoid ValveCold Water Solenoid Terminals Solenoid Valves DispenseDisconnect the water line from the solenoid valve Solenoid Valves DispenseSolenoid Valve Inlet Solenoid Valve Inlet Tank HeaterTank Heater Switch Refer to when reconnecting the wires to the tank heaterTank Heater Tank Heater Switch Tank Heater Switch TerminalsTransformer 240V TWO Wire MODELSONLYcontSchematic Wiring Diagram HC-2, & HC-3 Schematic Wiring Diagram HCA-2, & HCA-3