SERVICE (cont.)

TANK HEATER

 

 

 

L2T

L1

 

 

3

T

L5T

L4

TL

 

 

T

 

 

 

 

 

 

 

P2231.35

FIG. 27 TANK HEATER

Location:

 

 

 

 

The tank heater is located inside the hood on the right rear of the tank lid.

Test Procedure:

Electro/Mechanical Models.

1.Disconnect the brewer from the power supply.

2 With a voltmeter, check the voltage across the black and the red wire on the tank heater. With the control thermostat turned to the "ON" position (fully clockwise), connect the brewer to the power supply and check the voltage across the wires. The indication should be:

a.) 208 volts ac for three wire 120/208 volt models

and 240 volts ac for three wire 120/240 volt models.

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

3. Disconnect the brewer from the power supply.

If voltage is present as described, proceed to #4.

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

4.Disconnect wires from the tank heater.

5.Check for continuity across the terminals of the tank heater.

If continuity is present as described, reconnect the wires, the tank heater is operating properly.

If continuity is not present as described, replace the tank heater.

NOTE - If the tank heater remains unable to heat, remove and inspect the heater for cracks in the sheath.

DBC Models:

1.Disconnect the brewer from the power source.

2.Disconnect wires from heater.

3.Check for continuity across the tank heater ter- minals.

If continuity is present as described, the tank heater is operating properly.

If continuity is not present as described, replace the tank heater.

NOTE - If the tank heater remains unable to heat, remove and inspect the heater for cracks in the sheath.

Removal and Replacement:

1.Remove wires from tank heater.

2.Remove the four #8-32 nuts securing tank heater to tank lid.

3.Remove tank heater and gasket.

4.Install new tank heater and gasket with four #8-32 nuts on tank lid.

5.Refer to Fig. 28 when reconnecting the wires.

BLK to Limit Thermostat

RED to Contactor T1

BLK to Limit Thermostat

BLU Lead from Triac Assembly

ELECTRO/MECHANICAL

DBC

FIG. 28 TANK HEATER TERMINALS

Page 33

P837

27362 092996

Page 32 Page 34
Page 33
Image 33
Bunn System III manual Tank Heater, Location
Page 32 Page 34

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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