Problem | Bunn HC-3 specs

TROUBLESHOOTING (cont.)

PROBLEM

Product will not dispense (cont.)

PROBABLE CAUSE

9. Water strainer

10. 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

(A)Direction of flow arrow must be pointing towards dispenser.

(B)Remove the flow control and check for obstructions. Clear or replace.

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

Water is not hot

1.	Limit thermostat	Refer to Service - Limit Thermo-
CAUTION - Do not eliminate or		stat for testing procedures. See
bypass limit thermostat. Use only		page 27
BOM replacement part
#29329.1000
2.	Control thermostat (mechanical	Refer to Service - Control Thermo-
or electronic)		stat for testing procedures. See
		page 16
3.	Tank Heater	Refer to Service - Tank Heater for
		testing procedures. See page 33
4.	Tank heater switch	Refer to Service - Tank Heater
		Switch for testing procedures. See
		page 34

Spitting or excessive steaming

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.

Inspect tank assembly for exces- sive lime deposits. Delime as required.

2. Control thermostat (mechanical	Refer to Service - Control Thermo-
or electronic)	stat for testing procedures. See
	page 16

8	27591 061500

Image 8

Bunn HC-3 service manual Problem

Contents

Bunn HC-2 Serial # HC00025000 UP Warranty Introduction 27620.0000 User Notices12368.0002 Initial SET-UP Electrical RequirementsElectrical HOOK-UP Plumbing Requirements Cleaning AdjustmentsDispenser USE Cold Beverage SET-UP Optional Hopper Dispense Rate of Product TroubleshootingDraining the HOT Water Tank Troubleshooting Problem Probable Cause Remedy Problem Problem Probable Cause Dripping from dispense tip Lime build-upOn stainless steel surfaces can Ing in serious leaks Weak product Water temperature Testing procedure. See30 or Tip with a thermometer Troubleshooting Problem Probable Cause Remedy Service Component AccessContents Auger Drive Components Auger Drive Components If voltage is present as described, proceed to #5Washer Auger Motor Locknut Dust Seal Shoulder Screw Hopper Assy Service Right HC-2 Location Test ProcedureBallast Remove temperature probe from the tank Control ThermostatLocation Mechanical Thermostat Electronic Thermostat Optional Control Thermostat Thermostat Terminals Dispense Switch Dispense Switch Test Procedures FAN Frother and Whipper Motor Steam Collector #6-32 Screw Mixing ChamberRing Pull the mixing chamber 2 out of the whipper chamber Frother and Whipper Motor Whipper Motor Terminals Hopper Delay Board Reconnect the eight pin connector to the hopper delay board HOT/COLD Switch Optional Disconnect the wires from the switch termi- nals Door Assy Lamp Replacement Refer to FigLamp Holder Service Level Control Board and Level Probe Level Control Board and Probe Level Board Terminals Limit Thermostat Overflow Protection Switch Overflow Protection Switch RUN/RINSE Switch RUN/RINSE Switch Solenoid Valve Cold Water Optional Cold Water Solenoid Valve Cold Water Solenoid Terminals Solenoid Valves Dispense Solenoid Valve Inlet Solenoid Valves DispenseDisconnect the water line from the solenoid valve Solenoid Valve Inlet Tank Heater Tank Heater Refer to when reconnecting the wires to the tank heaterTank Heater Switch Tank Heater Switch Tank Heater Switch Terminals Transformer 240V TWO Wire MODELSONLYcont Schematic Wiring Diagram HC-2, & HC-3 Schematic Wiring Diagram HCA-2, & HCA-3