SERVICE (cont.)

 

Removal and Replacement:

 

TANK HEATER

 

 

 

 

1.

Disconnect the black wire and the white or red

 

 

 

wire from the tank heater terminals.

 

 

2.

Remove sprayhead and the hex nut securing the

 

 

 

sprayhead tube to the hood. Set aside for reas-

 

 

 

sembly.

 

 

 

3.

Disconnect vent tube.

 

 

 

4.

Remove the six #10 thread cutting screws secur-

 

 

 

ing the tank lid to the tank.

 

 

5.

Remove the tank lid with limit thermostat, spray-

 

 

 

head tube, tank heater and vent tube.

 

 

6.

Remove the two hex nuts securing the tank heater

 

 

 

to the tank lid. Remove tank heater with gaskets

 

 

 

and discard.

 

 

 

7.

Install new tank heater with gaskets on the tank

FIG. 19 TANK HEATER

P1833

 

lid and secure with two hex nuts.

 

 

 

 

8.

Install tank lid with limit thermostat, sprayhead

Location:

 

 

 

tube, tank heater and vent tube using six #10

The tank heater is located inside the tank and se-

 

 

thread cutting screws.

 

cured to the tank lid.

 

 

 

 

9.

Secure sprayhead tube to hood using a hex nut.

 

 

Test Procedures:

 

10.

Install sprayhead.

 

 

11.

Connect vent tube to fitting.

1. Disconnect the brewer from the power supply.

12.

Reconnect the wires to the limit thermostat, tank

2. With a voltmeter, check the voltage across the

 

heater. See limit thermostat section in this manual

black and white wires on 100 volt and 120 volt

 

 

when reconnecting wires.

models or the black and red wires for 240 volt

 

13. Refer to Fig. 20 when reconnecting the tank heater

models. Connect the brewer to the power source.

 

wires.

 

The indication must be:

 

 

 

 

BLK to Control

 

a) 120 volts ac for two wire 120 volt models .

WHI to Power Cord

b) 240 volts ac for two wire 240 volt models.

Thermostat

(100v & 120V Models)

c) 100 volts ac for two wire 100 volt models.

 

 

RED to Power Connector

3. Disconnect the brewer from the power source.

 

 

(240V Models)

If voltage is present as described, proceed to #4

If voltage is not present as described, refer to the

Wiring Diagrams and check wiring harness.

4.Disconnect the black wire and the white wire or red wire from the tank heater terminals.

5.Check for continuity across the tank heater termi- nals.

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, re-

 

 

P1284

move and inspect heater for cracks in the sheath.

 

FIG. 20 TANK HEATER TERMINALS

 

 

 

 

 

Page 27

 

 

 

 

 

10145

072600

 

 

 

 

Page 26 Page 28
Page 27
Image 27
Bunn T3A, T6A service manual Tank Heater
Page 26 Page 28

T6, T6A, T3A specifications

The Bunn T6A, T3A, T6, and T3 are part of a distinguished line of commercial coffee brewers engineered for consistency, efficiency, and top-notch brew quality. These machines are well-suited for cafes, restaurants, and specialty coffee shops where reliability and performance are paramount.

The Bunn T6A is designed to brew large quantities, accommodating high-demand environments. With a capacity of six gallons per hour, this machine can quickly fulfill orders, ensuring that customers receive fresh, hot coffee without delay. It features a programmable touchpad that allows users to customize brew settings, enabling them to fine-tune extraction times and temperatures for various coffee blends. The T6A’s dual-float system provides precise water control, preventing overflow and enhancing safety.

The Bunn T3A is another exceptional model in this lineup, designed for both versatility and speed. It boasts a three-gallon capacity, making it ideal for medium-sized establishments. The T3A is equipped with Bunn's patented SplashGard funnel, which helps protect users from hot water splashes, providing an additional layer of safety. Its advanced brewing technology allows for an optimal brew temperature range, ensuring that coffee is extracted to perfection every time.

The Bunn T6 is similar to the T6A in its heavy-duty construction but focuses on a slightly different brewing capacity. Capable of producing back-to-back brews, the T6 can keep up with high-volume demands. This model features a digital brewer interface, making it user-friendly while providing detailed feedback on the brewing process. Its robust design allows for easy maintenance, ensuring it remains in peak operating condition.

Lastly, the Bunn T3 serves as a compact alternative in the series, suited for locations with limited space but requiring high-quality coffee. The T3 can brew up to three gallons per hour, seamlessly fitting into smaller setups without compromising on performance. Like its counterparts, it features programmable settings and quick brew times, providing flexibility and efficiency.

Together, the Bunn T6A, T3A, T6, and T3 represent a versatile range of commercial coffee brewing solutions. Each model is designed to deliver exceptional coffee, maintain consistent quality, and provide ease of use, making them integral tools for any serious coffee business. Whether high volume or limited space, Bunn caters to diverse needs while upholding the highest standards in coffee brewing technology.
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