Bunn HC-3 Problem Probable Cause, Dripping from dispense tip Lime build-up, Ing in serious leaks

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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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Contents Serial # HC00025000 UP Bunn HC-2Introduction WarrantyUser Notices 12368.000227620.0000 Electrical Requirements Initial SET-UPElectrical HOOK-UP Plumbing RequirementsAdjustments CleaningDispenser USE Cold Beverage SET-UP OptionalTroubleshooting Draining the HOT Water TankHopper Dispense Rate of Product Problem Probable Cause Remedy TroubleshootingProblem Dripping from dispense tip Lime build-up Problem Probable CauseOn stainless steel surfaces can Ing in serious leaksTesting procedure. See Weak product Water temperature30 or Tip with a thermometerProbable Cause Remedy Troubleshooting ProblemComponent Access ServiceContents Auger Drive ComponentsIf voltage is present as described, proceed to #5 Auger Drive ComponentsWasher Auger Motor Locknut Dust Seal Shoulder Screw Hopper AssyRight HC-2 ServiceTest Procedure BallastLocation Control Thermostat Remove temperature probe from the tankLocation Mechanical Thermostat Electronic Thermostat OptionalThermostat Terminals Control ThermostatDispense Switch Dispense SwitchFAN Test ProceduresSteam Collector #6-32 Screw Mixing Chamber Frother and Whipper MotorRing Pull the mixing chamber 2 out of the whipper chamberWhipper Motor Terminals Frother and Whipper MotorReconnect the eight pin connector to the hopper delay board Hopper Delay BoardDisconnect the wires from the switch termi- nals HOT/COLD Switch OptionalLamp Replacement Refer to Fig Lamp HolderDoor Assy Service Level Control Board and Probe Level Control Board and Level ProbeLimit Thermostat Level Board TerminalsOverflow Protection Switch Overflow Protection SwitchRUN/RINSE Switch RUN/RINSE SwitchCold Water Solenoid Valve Solenoid Valve Cold Water OptionalSolenoid Valves Dispense Cold Water Solenoid TerminalsSolenoid Valves Dispense Disconnect the water line from the solenoid valveSolenoid Valve Inlet Tank Heater Solenoid Valve InletRefer to when reconnecting the wires to the tank heater Tank Heater SwitchTank Heater Tank Heater Switch Terminals Tank Heater SwitchMODELSONLYcont Transformer 240V TWO WireSchematic Wiring Diagram HC-2, & HC-3 Schematic Wiring Diagram HCA-2, & HCA-3
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