Bunn H5X Service Dispense Valve PC Only, Location Dispense Valve is located behind control panel

Page 18

SERVICE (cont.)

Dispense Valve (PC Only)

Location:

The Dispense Valve is located behind control panel.

If voltage is not present as described, refer to Wir- ing Diagrams and check the dispenser wiring harness. Also check the control board for proper operation.

Bracket

Shroud

Dispense valve

Nut

Flare nut

FIG. 18a DISPENSE VALVE

Test Procedures:

1.Check the valve for coil action. Turn on the valve with the dispense button. Listen carefully in the vicinity of the dispense valve for a click as the coil pulls the plunger in.

If no sound is heard as described, proceed to #2. If the sound is heard as described, there may be a

blockage in the valve. Disconnect the dispenser from the power source. Remove the valve and inspect for blockage, and de-lime all related areas.

2.Connect voltmeter leads to the coil terminals. Turn on the valve with the dispense button. NOTE: Due to the internally rectified coil, the indication will be 120VAC all the time. Set the meter to DC volts. The indication should be 170VDC when activated. If the polarity of meter leads are reversed, reading will indicate -170VDC. (Double these readings for 240 volt coils)

If voltage is present as described, but no coil action is observed, valve is defective. Replace valve and test again to verify repair.

Removal and Replacement:

1.Disconnect the dispenser from the power source and allow to cool.

2.Drain enough water from the tank so the water level is below the outlet.

3.Remove the nut and flare nut from the valve.

4.Remove the top cover, shroud, and bracket.

5.Disconnect wires from the valve.

6.Using a back up wrench to hold fitting in place, Remove the valve.

7.Wrap threads of fitting with Teflon tape and install new valve.

8.Install bracket, nut, flare nut, wires and covers.

FIG. 18b

VALVE REMOVAL

REPAIR KIT

FIG. 18c

VALVE REPAIR KIT

18

42311 071310

 

Image 18
Contents H10X/H5X H5E/DV PC H5 Element Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents Flashes Description of Failure Fault CodesProblem RemedyProblem Probable Cause Remedy Lime build-up Water boils continuously Temperature controlNoises Water supply Ready indicator will not light Deposits. Delime as requiredComponent Access H5E/DV-PC/X Component Access H10XElectronic Controls ServiceLiquid Level Control Flow Charts LocationService Electronic Controls Liquid Level Control Test ProcedureService H5X Thermostat Replace the electronic control board Service Limit Thermostat Location Limit thermostat is located on the tank lidService Safety Overflow Switch Safety Overflow WiringService Solenoid Valve Late Models If voltage was present as described, proceed to #5Service Solenoid Valve Early Models Service Tank Heater Location Tank heater is located in the tank lidCheck for continuity across the tank heater termi- nals Service Steam Sensor Thermistor Thermistor PositionRemoval and Replacement Service Dispense Valve PC OnlyTest Procedures Location Dispense Valve is located behind control panel120/240V AC 3 Wire + GND Early H5E, H5X, H10X Install jumper thru ver120V AC 2 Wire + GND 120/208V AC 3 Wire + GND Single Phase230V AC 2 Wire + GND Schematic Wiring Diagram H5E-PCSchematic Wiring Diagram H5-PCWire + GND Schematic Wiring Diagram H5E/H5X Schematic Wiring Diagram H5XA, H5EA CE RelaySchematic Wiring Diagram H5 Element Single Phase
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DV, H5E, H5X specifications

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