ADJUSTMENTS

The beverage solenoid is preset to dispense approximately 9/10 ounce per second (26 mL/sec). This amount can be adjusted:

1.Disconnect the dispenser from the power source.

2.Remove the hoppers and the access panel behind the hoppers.

3.Rotate the control at the base of the solenoid clockwise to decrease or counterclockwise to increase the amount of water.

4.Replace access panel when finished.

HOPPER MOTOR SPEED PROGRAMING

NOTE: The hopper dispense rates are preset at the factory. With 22 tooth gear and auger wire the preset dis- pense rate is approximately 3 to 5 grams per second. With 30 tooth gear and auger wire the preset dispense is approximately 5 to 7 grams per second. The hopper dispense rates can be individually programmed to a range of dispense rates from approximately 1.5 to 12 grams per second, as follows:

1.Place the rinse/run switch in the center (program) position.

2.Hold the increase/decrease switch in the desired (increase or decrease) position.

3.While holding the increase/decrease switch, press and release the dispense switch for the chamber you wish to adjust. Each time the dispense switch is pressed, the rinse L.E.D. will flash, and the motor speed for that hopper will be increased/decreased by approximately 2 1/2%.

4.Return the rinse/run switch to the run position after hopper motor speed adjustments are complete.

For IMIX-3S only:

5.Once any of the three hopper motors has been programmed to the desired speed, either or both of the other hopper motors can be set to the same speed as follows:

a.Place the rinse/run switch in the center (program) position.

b.Press and hold the dispense switch that has been programmed for the correct speed.

NOTE: Care must be taken not to exceed 5 seconds, or a hopper throw test will occur.

c. Momentarily press the dispense switch for the hopper motor to be programmed. The rinse L.E.D. will light for approximately 1 second, indicating that the speeds have been set equal.

d. Release both dispense switches.

e. Repeat step 5. b. through 5. d. for remaining hopper motor if desired.

f. Return the rinse/run switch to the run position after hopper motor speed adjustments are complete.

DRAINING THE HOT WATER TANK

CAUTION - The dispenser must be disconnected from the power source throughout these steps.

1.Disconnect the dispenser from the power source.

2.Place the tank heater switch in the “OFF” position.

3.Shut-off and disconnect the incoming water supply.

4.Remove the front, lower access panel.

5.Pull out drain tube to empty into a sink or a container with a minimum of 7-1/2 gallon (28.5 L) capacity.

6.Make sure drain clamp is closed. Then, remove drain plug.

7.Direct tube into sink or container and open drain clamp. Continue draining tank until ALL of the water is out.

WARNING: Be very careful with the draining water because it can be very hot.

8.Close drain clamp, insert drain plug, place drain tube back into machine, and replace lower access panel. NOTE - The dispenser must be refilled using the INITIAL FILL & HEAT steps before reconnecting to the power source.

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Bunn 5S service manual Adjustments, Hopper Motor Speed Programing, Draining the HOT Water Tank
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5S specifications

The Bunn 5S coffee maker is a staple in both commercial and residential settings, known for its reliability and efficiency. One of its main features is the five-gallon capacity, which makes it ideal for businesses such as cafes, restaurants, and office break rooms where high-volume coffee production is necessary. This capacity ensures that user needs are met with minimal downtime, allowing for continuous service.

A key technological feature of the Bunn 5S is its patented brewing system. The machine utilizes a unique spray head design, which creates a uniform coffee extraction process. This results in a consistent flavor profile in every batch, enhancing the quality of the coffee served. In addition to its brewing mechanism, the Bunn 5S features a stainless steel construction which not only contributes to its durability but also aids in maintaining temperature stability for optimal brewing.

The Bunn 5S also showcases an advanced temperature control system, with an internal thermostat that ensures water is heated to the ideal brewing temperature. This feature is crucial as it allows for maximizing the coffee’s extraction process, leading to a rich and flavorful cup. The machine heats water quickly, minimizing the wait time between brews, which is essential in a high-demand scenario.

Another characteristic of the Bunn 5S is its ease of use. The machine is designed for quick setup and operation, requiring minimal training for new staff. The user-friendly interface includes simple controls for brew strength and volume, making it easy to customize the coffee experience according to individual preferences.

Cleaning and maintenance are also simplified with the Bunn 5S. The machine features removable components that can be easily washed, ensuring that the coffee maker stays hygienic and operates efficiently. Regular maintenance checks are facilitated by its accessible design, allowing operators to ensure longevity and performance without extensive technical knowledge.

In summary, the Bunn 5S is a robust coffee-making solution that combines significant capacity with cutting-edge technology to produce high-quality coffee consistently. Its features, such as the innovative brewing system, durable construction, effective temperature control, and user-friendly design, make it an excellent choice for anyone needing to serve large quantities of coffee efficiently. Whether for commercial use or home brewing enthusiasts, the Bunn 5S stands out as a top contender.
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