Service Solenoid Valve | Bunn H5X guide

SERVICE (cont.)

Solenoid Valve

Location:

The solenoid valve is located inside the rear of the dispenser on the right side near the bottom.

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

WARNING

P1778

FIG. 7 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 board.

3.Check the voltage across the solenoid valve coil terminals with a voltmeter. Connect the dispenser to the power source. The indication must be:

a.) 100 to 120 volts ac for 100 to 120 volt models or

b.) 200 to 240 volts ac for 200 to 240 volt models or

c.) 230 volts ac for 230 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 board.

If the sound was heard as described and water will not pass through the solenoid valve, there may be a blockage 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 line from the solenoid valve.

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

5.Lift-out the solenoid valve.

6.Securely install the new solenoid valve to the back panel.

7.Securely fasten the water line to the solenoid valve.

8.Reconnect the wires, FIG. 8.

WHI/BLU to Electronic

Control Board T1

WHI or RED to

Terminal Block

FIG. 8 SOLENOID VALVE WIRING

19	10420.1 040309

H5X specifications

The Bunn H5E and H5X coffee machines represent a leap forward in brewing technology, specifically tailored for commercial use. Both models focus on delivering high-quality coffee while maximizing efficiency, making them ideal choices for busy cafés and restaurants.

The Bunn H5E features a unique 5-liter dual tank system, which allows for faster brewing times and reduces wait periods for customers. This dual tank setup facilitates the simultaneous preparation of multiple coffee types, catering to a diverse clientele. The H5X, on the other hand, is equipped with advanced electronic controls that permit precise temperature adjustments to ensure that the ideal brewing conditions are maintained, enhancing flavor extraction.

One of the standout features of both models is the patented BrewOptimized Technology. This technology helps maintain optimal water temperature and consistent flow rates throughout the brewing process, ensuring that each cup of coffee meets the high standards expected in commercial settings. Additionally, the units utilize a patented stainless steel brew basket that enhances durability and simplifies cleaning, making maintenance less of a chore for busy staff.

Another significant characteristic of the H5E and H5X is their programmable settings, which allow operators to customize brewing parameters according to their specific preferences or customer needs. This flexibility means that establishments can experiment with various coffee profiles, ensuring that they serve only the best products to their patrons.

Safety is also a priority in the design of these machines. The H5E and H5X come equipped with built-in safety features such as automatic shut-off and thermal overload protection, which help to prevent accidents and enhance longevity. Moreover, their compact design allows for easy installation in a variety of settings, whether it's a small coffee stand or a large restaurant operation.

Both the Bunn H5E and H5X models are energy-efficient, with features that minimize power consumption without compromising performance. This focus on sustainability not only helps reduce overhead costs but also appeals to environmentally conscious consumers.

In summary, the Bunn H5E and H5X coffee machines are engineered for high performance, reliability, and versatility. With features designed to provide quick, quality coffee while ensuring ease of operation and maintenance, these machines are ideal for any establishment that takes its coffee seriously. Whether you’re brewing for a crowd or crafting specialty drinks, the H5E and H5X stand ready to deliver excellent results every time.