Manuals / Bunn / Kitchen Appliance / Coffee Grinder

Bunn HC-3 TROUBLESHOOTING cont, Problem, Probable Cause, Remedy, depending on local water condi

Models: HC-3

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TROUBLESHOOTING (cont.)
PROBLEM	PROBABLE CAUSE
Dripping from dispense tip	1. Lime build-up
	CAUTION - Tank and tank compo-
	nents should be delimed regularly
	depending on local water condi-
	tions. Excessive mineral build-up
	on stainless steel surfaces can
	initiate corrosive reactions result-
	ing in serious leaks.

REMEDY

Inspect the tank assembly for excessive lime deposits. Delime as required.

2.Dispense solenoid valve (Hot or Cold)

Remove the dispense solenoid valve and clear any obstructions. Rebuild or replace the valve if necessary. See page 30 or 31

Water flows into tank continuously 1. Level control board and probe	Refer to Service - Level Control
	Board and Probe for testing
	procedures. See page 26

2.Solenoid valve (Inlet)

3.Overflow Protection Switch

Refer to Service - Solenoid Valve (Inlet) for testing procedures. See page 32

Refer to Service - Overflow Protection Switch for testing procedures. See page 28

9	27591 031597

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Bunn HC-3 service manual TROUBLESHOOTING cont, Problem, Probable Cause, Remedy, depending on local water condi

Contents

BUNN HC-2 SERIAL # HC00025000 - UPHC-3 DISCONTINUED VERSION The information in this manualINTRODUCTION WARRANTY26525.0000 USER NOTICES12368.0002 27620.0000ELECTRICAL REQUIREMENTS INITIAL SET-UPELECTRICAL HOOK-UP PLUMBING REQUIREMENTSADJUSTMENTS CLEANINGINITIAL fill & heat DISPENSER USETROUBLESHOOTING DRAINING THE HOT WATER TANKHOPPER DISPENSE RATE OF PRODUCT PROBLEM TROUBLESHOOTING contPROBABLE CAUSE REMEDYRefer to Service - Limit Thermo TROUBLESHOOTING cont PROBLEMtesting procedures. See page PROBABLE CAUSEPROBLEM TROUBLESHOOTING contPROBABLE CAUSE REMEDYPROBLEM TROUBLESHOOTING contPROBABLE CAUSE REMEDYRefer to Service - Lamp, see page TROUBLESHOOTING CONT PROBLEMRefer to Service - Lamp Holder for Remove and clean lime off the tankCOMPONENT ACCESS SERVICEContents AUGER DRIVE COMPONENTSSERVICE AUGER DRIVE COMPONENTS contAUGER DRIVE COMPONENTS cont SERVICE contSERVICE cont BALLAST1. Disconnect the dispenser from the power source BLK to Terminal BlockCONTROL THERMOSTAT SERVICE contMECHANICAL CONTROL THERMOSTAT cont SERVICE contFIG. 7 THERMOSTAT TERMINALS DISPENSE SWITCH SERVICE contFIG. 9 DISPENSE SWITCH CONNECTORS SERVICE cont SERVICE cont FROTHER AND WHIPPER MOTORFIG. 11 FROTHER AND WHIPPER MOTOR FIG. 12 MIXING/WHIPPER CHAMBERSERVICE cont FROTHER AND WHIPPER MOTOR contSERVICE cont HOPPER DELAY BOARDSERVICE cont HOT/COLD SWITCH OptionalWHI/BRN to Main Harness WHI/RED to Main Harness WHI/YEL to Cold SolenoidLAMP 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 TANK HEATER SOLENOID VALVE INLET contSERVICE cont WHI from Terminal Block VIO from Liquid Level BoardTANK HEATER SWITCH TANK HEATER contSERVICE cont TANK HEATER SWITCH cont SERVICE contTRANSFORMER 240V TWO WIRE MODELS ONLY SERVICE cont TRANSFORMER 240V TWO WIRE MODELSONLYcont120/208-240 VOLTS AC - 3 WIRE SCHEMATIC WIRING DIAGRAM HC-2, & HC-3Configuration 120 VOLTS AC - 2 WIRE OR2 WIRE SCHEMATIC WIRING DIAGRAM HCA-2, & HCA-3Configuration SINGLE PHASE

nents should be delimed regularly

depending on local water condi-

tions. Excessive mineral build-up

initiate corrosive reactions result-