Bunn HC-3 service manual Transformer 240V TWO Wire, MODELSONLYcont

Page 36

SERVICE (cont.)

TRANSFORMER (240V TWO WIRE

MODELSONLY)(cont.)

Removal and Replacement:

1.Disconnect the wires from the transformer.

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

3.Remove and discard the transformer.

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

5.Refer to Fig. 34 when renonnecting the wires.

RED & BLK to

Main Harness

BLK & WHI to

Fan

1 2 3

FIG.34 TRANSFORMER TERMINALS	P1288

36	27591 031597

Image 36

Contents Bunn HC-2 Serial # HC00025000 UPWarranty IntroductionUser Notices 12368.000227620.0000 Initial SET-UP Electrical RequirementsElectrical HOOK-UP Plumbing RequirementsCleaning AdjustmentsDispenser USE Cold Beverage SET-UP OptionalTroubleshooting Draining the HOT Water TankHopper Dispense Rate of Product Troubleshooting Problem Probable Cause RemedyProblem Problem Probable Cause Dripping from dispense tip Lime build-upOn stainless steel surfaces can Ing in serious leaksWeak product Water temperature Testing procedure. See30 or Tip with a thermometerTroubleshooting Problem Probable Cause RemedyService Component AccessContents Auger Drive ComponentsAuger Drive Components If voltage is present as described, proceed to #5Washer Auger Motor Locknut Dust Seal Shoulder Screw Hopper AssyService Right HC-2Test Procedure BallastLocation Remove temperature probe from the tank Control ThermostatLocation Mechanical Thermostat Electronic Thermostat OptionalControl Thermostat Thermostat TerminalsDispense Switch Dispense SwitchTest Procedures FANFrother and Whipper Motor Steam Collector #6-32 Screw Mixing ChamberRing 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 Replacement Refer to Fig Lamp HolderDoor 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 DispenseSolenoid Valves Dispense Disconnect the water line from the solenoid valveSolenoid Valve Inlet Solenoid Valve Inlet Tank HeaterRefer to when reconnecting the wires to the tank heater Tank Heater SwitchTank 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

SERVICE (cont.)

TRANSFORMER (240V TWO WIRE

MODELSONLY)(cont.)

FIG.34 TRANSFORMER TERMINALS