Bunn H10X service manual Service Solenoid Valve, Hot

Page 17

SERVICE (cont.)

Solenoid Valve

Location:

The solenoid valve is located within the side of the dis- penser on the right side near the bottom.

To test the solenoid valve, access will also be needed to the electronic control assembly.

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FIG. 9 SOLENOID VALVE

Test Procedure:

1.Disconnect the dispenser from the power source and turn off the water supply to the dispenser.

2.Remove the pink wire from terminal 5 of the elec- tronic control assembly.

3.Check the voltage across the solenoid valve coil terminals with a voltmeter. Connect the dispenser to the power source. The indication must be 200 to 240 volts ac for 200 to 240 volt models after a delay of approximately 5 seconds.

4.Disconnect the dispenser from the power source.

If voltage was present as described, proceed to #5.

If voltage was not present as described, refer to the Wiring Diagrams and check the dispenser wiring har- ness.

5.Remove both wires from the solenoid valve coil terminals.

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

If continuity is present as described, reconnect the wires and proceed to #7.

If continuity is not present as described, replace the solenoid valve coil.

7.Check the solenoid valve for coil action. Connect the dispenser to the power source. Listen carefully in the vicinity of the solenoid valve for a “clicking” sound after approximately 5 seconds, as the coil magnet attracts the plunger.

8.Disconnect the dispenser from the power source.

9.Reconnect the pink wire to terminal 5 of the elec- tronic control assembly.

If the sound was heard as described and water will not pass through the solenoid valve, there may be a block- age in the water line before or after the solenoid valve or the solenoid valve may require inspection for wear and removal of waterborne particles.

If the sound was not heard as described, replace the solenoid valve.

Removal and Replacement:

1.Remove all wires from the solenoid valve coil.

2.Turn off the water supply to the dispenser.

3.Disconnect the water lines to and from the sole- noid valve.

4.Remove the two 8-32 slotted-head screws holding the solenoid valve and mounting bracket to the component bracket.

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Contents Bunn H10X Warranty 12593.0000 User Notices10044.0000 Electrical Hook-Up Electrical RequirementsPlumbing Requirements Draining the Dispenser CleaningInitial SET-UP Equipment will not operate No power or incorrect voltage TroubleshootingOverflow protection switch ElsLimit thermostat TroubleshootingWater flows into the tank continu Solenoid valve Water boils continuously Temperature control Temperature controlReplace the indicator LED Water is cold Tank heaterComponent Access ServiceLocation To the triac assembly located on the insideRear wall GeneralLiquid Level Control Test Procedure Service Electronic ControlsBe replaced as a set Temperature Control Test ProcedureWith a voltmeter. Connect the dispenser to Volts ac for 200 to 240 volt models while the redElectronic Control Removal and Replacement Replace the triac assemblyService Electronic Controls Test Procedure Service Limit ThermostatOverflow Protection Switch Service Overflow Protection SwitchHot Service Solenoid ValveLift out the solenoid valve Solenoid Valve WiringTank Heater Service Tank HeaterWiring Diagram
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H10X specifications

The Bunn H10X is a state-of-the-art coffee brewer designed for both commercial and high-demand home environments. Renowned for its reliability and superior performance, the H10X is engineered to deliver exceptional coffee quality while streamlining the brewing process.

One of the main features of the Bunn H10X is its capacity to brew large quantities of coffee efficiently. It boasts a 10-gallon tank, allowing it to produce up to 20 gallons of freshly brewed coffee in just one hour. This makes it an ideal choice for offices, cafes, and businesses that require a constant supply of coffee for their customers or employees.

The H10X is equipped with advanced brewing technology that ensures optimal extraction of flavor from coffee grounds. Its patented Pulse Brew feature enhances the brewing process by controlling the flow of water through the coffee grounds, enhancing flavor extraction and improving the overall taste profile. This technology is particularly beneficial for specialty coffees, where nuanced flavors are essential.

Additionally, the Bunn H10X incorporates a digital thermal control system, allowing users to adjust brewing temperatures for their specific coffee types. This precise control ensures that the coffee is brewed at the ideal temperature, maximizing flavor and aroma while minimizing bitterness. The machine also features a built-in water tank heater, providing consistent brewing temperatures throughout the day.

User-friendliness is another hallmark of the H10X. The intuitive interface includes programmable options for brewing strength and timing, enabling users to customize their coffee experience easily. An LCD display provides real-time updates on brewing status, making it simple to monitor the process.

Durability is a key characteristic of the Bunn H10X. Constructed from high-grade materials, this coffee brewer is built to withstand the demands of a bustling environment. Enhanced insulation keeps coffee hot for extended periods while reducing energy consumption.

For ease of maintenance, the H10X features a removable brew basket and a straightforward cleaning process. This design not only helps maintain the unit's performance but also extends its lifespan.

In summary, the Bunn H10X is a powerful, efficient, and user-friendly coffee brewer that stands out in the marketplace. With its impressive capacity, advanced brewing technologies, and robust construction, it is an ideal choice for anyone seeking a high-quality coffee solution.