SERVICE (cont.)

SOLENOID VALVE (Refill)

 

 

 

 

1

 

 

 

2

LT

 

 

3

LT

 

5

4L

TL

 

 

TL

T

 

 

 

 

 

 

 

P2231.35

FIG. 23 REFILL SOLENOID VALVE

Location:

The inlet solenoid valve is located inside the trunk on top of the flow control bracket.

Test Procedure:

1.Disconnect the brewer from the power source.

2.Disconnect both wires from the solenoid valve coil terminals and check for continuity across the solenoid valve coil terminals.

If continuity is present as described, reconnect the white and violet wires on the electro/mechanical con- trolled 120/208 and 120/240 volt brewers, white and white/blue on DBC 120/208 and 120/240 volt brew- ers, red and violet on electro/mechanical controlled 200 or 240 volt brewers and red and white/blue on DBC 200 or 240 volt brewers.

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

3.With a voltmeter, check the voltage across the solenoid valve terminal wires:

a.) White and violet wires on 120/208 and 120/ 240 volt electro/mechanical controlled models. b.) White and white/blue wires on 120/208 and 120/240 volt DBC models.

c.) Red and violet wires on 200 and 240V volt electro/mechanical controlled models.

d.) Red and white/blue wires on 200 and 240 volt DBC models.

Connect the brewer to the power source. The indica- tion must be:

a.) 120 volts ac for three wire 120/208 volt mod- els and three wire 120/240 volt models.

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

4. Disconnect the brewer from the power source.

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

If voltage is not present as described, refer to the Wiring Diagrams and check brewer wiring harness.

5.Check the solenoid valve for coil action. Connect the brewer to the power source and draw water from the faucet. Listen carefully in the vicinity of the solenoid valve for a "clicking" sound after approximately 1 second, as the coil magnet at- tracts.

6.Disconnect the brewer from the power source.

If the sound is 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 is 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 brewer.

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

4.Disconnect water line from the flow control to the solenoid and remove.

5.Remove the four #8-32 screws securing the flow control bracket to the support bracket and slide bracket and solenoid over flow control.

6.Remove bracket and solenoid as an assembly.

7.Remove the two #10-32 screws and lockwashers securing the solenoid valve to the flow control bracket.

8.Using two #10-32 screws securely install the new solenoid valve to the flow control bracket.

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Bunn System III manual Service Solenoid Valve Refill, Refill Solenoid Valve
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System III specifications

The Bunn System III is a versatile and efficient commercial brewing system designed for high-demand environments such as cafés, restaurants, and catering operations. Renowned for its reliability and performance, the System III combines advanced brewing technology with user-friendly features to deliver exceptional coffee consistently.

One of the key features of the Bunn System III is its innovative brewing technology, which employs a unique infuser system. This design allows for optimal extraction of coffee flavors by ensuring that hot water is evenly distributed over the coffee grounds, maximizing flavor and ensuring a rich, balanced cup every time. The brewing system can brew up to 3.8 gallons of coffee per hour, making it an ideal choice for busy establishments.

The System III is equipped with an impressive built-in water heater that maintains a temperature of approximately 200°F, which is crucial for brewing coffee at the ideal temperature. This consistent temperature control minimizes the risk of under-extraction or over-extraction, resulting in better-tasting coffee. Additionally, the hot water faucet feature allows users to brew tea or instant beverages on demand, further enhancing the system's versatility.

Another characteristic that sets the Bunn System III apart is its user-friendly interface. The system is designed with intuitive controls, allowing baristas and kitchen staff to operate it with minimal training. The easy-to-read digital display provides critical information such as brew time and water temperature, ensuring that users can monitor the brewing process closely.

Durability is a hallmark of the Bunn System III. Constructed from high-quality materials, this brewing system is designed to withstand the rigors of commercial use. Its robust design ensures longevity and minimizes the need for frequent maintenance, making it a cost-effective choice for businesses.

The Bunn System III also features a large-capacity brew basket, capable of holding ample coffee grounds for high-volume brewing. This basket, combined with the system's efficient design, allows for quick and easy brewing, making it perfect for high traffic situations.

In conclusion, the Bunn System III coffee brewing system is a top choice for commercial coffee operations. Its advanced brewing technology, consistent temperature control, user-friendly features, and durable construction combine to create an exceptional brewing experience. Whether in a café, restaurant, or catering service, the Bunn System III stands out as an indispensable tool for delivering high-quality coffee efficiently.
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