Solenoid Valves Dispense, Solenoid Valve Inlet | Bunn HC-3 specification

SERVICE (cont.)

SOLENOID VALVES (DISPENSE) (cont.)

3.Drain enough water from the tank so the water level is below the dispense valve mounting hole.

NOTE: Bunn-O-Matic has a syphon assembly, #12440.0000. available for this purpose.

4.Disconnect the water line from the solenoid valve.

5.Remove the #10-32 screw securing the solenoid valve to side of the tank. Remove solenoid valve.

6.Using the #10-32 screw install new solenoid valve on side of the tank

7.Push the water line onto the tube on bottom of solenoid valve.

8.Refer to Fig. 26 when reconnecting the wires.

FIG. 26 DISPENSE SOLENOID VALVE	P1216
FIG. 26 DISPENSE SOLENOID VALVE
TERMINALS

SOLENOID VALVE (INLET)

FIG. 27 INLET SOLENOID VALVE	P1203.45
FIG. 27 INLET SOLENOID VALVE
Location:

The inlet solenoid is located on the lower right side of the rear panel.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the white and violet wires from the solenoid valve.

3.Check the voltage across the white and violet wires with a voltmeter. Connect the dispenser to the power source. The indication must be 120 volts ac for two wire 120 volt models, three wire 120/208, 120/240 volt models and 240 volts ac for two wire 240 volt models.

4.Disconnect the dispenser from the power source,

If voltage is present as described, proceed to #5

If voltage is not present as described, refer to the wiring diagram and check dispenser wiring harness.

5.Check for continuity across the solenoid valve coil terminals.

If continuity is present as described, reconnect the white and violet wires to the solenoid.

32	27591 031597

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Bunn HC-3 service manual Solenoid Valves Dispense, Disconnect the water line from the solenoid valve, Solenoid Valve Inlet

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