Bunn System III manual TRIAC/HEAT Sink Assembly DBC only

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SERVICE (cont.)

TRIAC/HEAT SINK ASSEMBLY (DBC ONLY)

P1094.35

FIG. 13 TRIAC/HEAT SINK

6.Apply heat sink compound and secure new triac assembly on rear of the heat sink with one #6-32 screw.

7.Route the triac wires through the tank support channel.

8.Secure triac/heat sink assembly to the lower rear of the brewer with two #6-32 screws.

9.Reconnect the wires of the new triac assembly. Refer to Fig. 14 when reconnecting wires.

WHI/VIO to Terminal Block (Red Insert)

BLU to Tank Heater

BLU to DBC Board J1-17

TAN to DBC Board J1-16

FIG. 14 TRIAC/HEAT SINK TERMINALS P1099

Location

The triac/heat sink is located on the lower rear of the brewer.

Removal and Replacement

NOTE - each triac installation requires the use of an approved silicone heat sink compound. Bunn-O- Matic recommends the use of Dow Corning 340 com- pound or equivalent. It can be purchased direct from Bunn-O-Matic (part number M2522.1000).

1.Place the tank heater switch on the DBC board assembly in the “OFF” position.

2.Disconnect triac wires, white/violet from terminal block, blue from tank heater, blue and tan from the DBC board assembly.

3.Remove the two #6-32 screws securing the triac/ heat sink assembly to the lower rear of the brewer.

4.Remove heat sink, triac and triac leads as an assembly.

5.Remove the one #6-32 screw securing triac to the heat sink and discard triac with leads.

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27362

092996

 

 

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Contents Bunn Warranty User Notices 20201.5600 00831.0000 00656.0000 03408.0000 03409.0000Models with digital brewer control assembly Electrical RequirementsModels with electro/mechanical thermostats Plumbing RequirementsAdjusting Brew Volumes Initial SET-UPElectro/mechanical brewers Cleaning Brew Selector SwitchStart Switch Operating ControlsTroubleshooting Problem Probable Cause RemedyTroubleshooting Problem Overflow protection switchBrew cycle will not start Digital Brewer Control Assem- bly DBCTroubleshooting Problem Probable Cause Remedy Triac assembly DBC Warmer elementSprayhead or airvent Mechanical StepTime adjustment Electro DBC volume adjustmentTimer adjustment Procedures. See page 34 orTroubleshooting Problem Cannot access the DBC Digital brewer control DBC display is blank Digital brewer controlService Component AccessContents Service Bypass ValveService LocationBrew Selector Switch ELECTRO/MECHANICALContactor Assembly ELECTRO/MECHANICAL only Gently remove the capillary bulb and grommet from the tankService Contactor Assembly ELECTRO/MECHANICAL only Contactor Assembly TerminalsTest Procedures Disconnect the brewer from the power source OnlyDispense Valve ElectromechanicalDigital Brewer Control Board and Display DBC TION, Entry and DescriptionService Digital Brewer Control Board and Display DBC TRIAC/HEAT Sink Assembly DBC only TRIAC/HEAT SinkP2231.30 Terminals Limit Thermostat Limit ThermostatService ON/OFF Warmer Switch Black wire from the center terminalThree wire 120/240 volt models ModelsOverflow Protection Switch Test Procedure Disconnect the brewer from the power sourceService Solenoid Valve Refill Refill Solenoid ValveRefill Solenoid Terminals Start Switch Tank Heater LocationTimer ELECTRO/MECHANICAL Onlyearly Models Digital Timer ELECTRO/MECHANICAL only Late Models If voltage is as described, proceed to #7Timer Setting Digital Timer WiringWarmer Element Lower 27362 092900 Lower

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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