ADJUSTMENT & OPTIONAL SETTINGS (cont)

Total Dispense Ratio Set Up Procedure

1.Adjust water flow as described in Water Flow Testing and Adjustment. Record water output setting for later reference on each dispense head.

2.Place the Program switch in the ON position.

3.Place a measuring container under the dispense nozzle, press and release the DISPENSE button 6 times.

4.Record the total ounces dispensed.

5.Refer to the Brix/Ratio chart below to confirm proper total dispensed amount for ratio desired and water output previously recorded.

6.To increase or decrease the product output, refer to Pump Speed Adjustment section.

7.Place the Program switch back into the OFF position.

3 second

 

 

 

Ratio Target

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

water dispense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(oz)

 

2:1

 

3:1

 

4:1

 

5:1

 

6:1

 

7:1

 

8:1

 

9:1

 

10:1

 

11:1

 

12:1

 

13:1

 

14:1

 

15:1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.5

 

2.25

 

2.00

 

1.88

 

1.80

 

1.75

 

1.71

 

1.69

 

1.67

 

1.65

 

1.64

 

1.63

 

1.62

 

1.61

 

1.60

1.75

 

2.63

 

2.33

 

2.19

 

2.10

 

2.04

 

2.00

 

1.97

 

1.94

 

1.93

 

1.91

 

1.89

 

1.88

 

1.88

 

1.87

2.0

 

3.00

 

2.67

 

2.50

 

2.40

 

2.33

 

2.29

 

2.25

 

2.22

 

2.20

 

2.18

 

2.17

 

2.15

 

2.14

 

2.13

2.25

 

3.38

 

3.00

 

2.81

 

2.70

 

2.63

 

2.57

 

2.53

 

2.50

 

2.48

 

2.45

 

2.44

 

2.42

 

2.41

 

2.40

2.5

 

3.75

 

3.33

 

3.13

 

3.00

 

2.92

 

2.86

 

2.81

 

2.78

 

2.75

 

2.73

 

2.71

 

2.69

 

2.68

 

2.67

2.75

 

4.13

 

3.67

 

3.44

 

3.30

 

3.21

 

3.14

 

3.09

 

3.06

 

3.03

 

3.00

 

2.98

 

2.96

 

2.95

 

2.93

3.0

 

4.50

 

4.00

 

3.75

 

3.60

 

3.50

 

3.43

 

3.38

 

3.33

 

3.30

 

3.27

 

3.25

 

3.23

 

3.21

 

3.20

3.25

 

4.88

 

4.33

 

4.06

 

3.90

 

3.79

 

3.71

 

3.66

 

3.61

 

3.58

 

3.55

 

3.52

 

3.50

 

3.48

 

3.47

3.5

 

5.25

 

4.67

 

4.38

 

4.20

 

4.08

 

4.00

 

3.94

 

3.89

 

3.85

 

3.82

 

3.79

 

3.77

 

3.75

 

3.73

3.75

 

5.63

 

5.00

 

4.69

 

4.50

 

4.38

 

4.29

 

4.22

 

4.17

 

4.13

 

4.09

 

4.06

 

4.04

 

4.02

 

4.00

4.0

 

6.00

 

5.33

 

5.00

 

4.80

 

4.67

 

4.57

 

4.50

 

4.44

 

4.40

 

4.36

 

4.33

 

4.31

 

4.29

 

4.27

4.25

 

6.38

 

5.67

 

5.31

 

5.10

 

4.96

 

4.86

 

4.78

 

4.72

 

4.68

 

4.64

 

4.60

 

4.58

 

4.55

 

4.53

4.5

 

6.75

 

6.00

 

5.63

 

5.40

 

5.25

 

5.14

 

5.06

 

5.00

 

4.95

 

4.91

 

4.88

 

4.85

 

4.82

 

4.80

4.75

 

7.13

 

6.33

 

5.94

 

5.70

 

5.54

 

5.43

 

5.34

 

5.28

 

5.23

 

5.18

 

5.15

 

5.12

 

5.09

 

5.07

5.0

 

7.5

 

6.67

 

6.25

 

6.00

 

5.83

 

5.71

 

5.63

 

5.56

 

5.50

 

5.45

 

5.42

 

5.38

 

5.36

 

5.33

 

 

 

 

 

 

 

 

 

 

Dispensed product (oz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temperature Compensated Refractometer Method

1.Adjust the water flow as described in Water Flow Testing and Adjustment.

2.Place an empty container under the appropriate dispense nozzle.

3.Press and hold the “Product Dispense Switch” Figs 9 & 10, until water and concentrate begin flowing freely from the dispense nozzle.

4.Discard the product caught previously and place the empty container back under the dispense nozzle.

5.Press and hold the “Product Dispense Switch” until the cup is filled.

6.Stir the contents of the cup, and use the refractometer (according to the manufacturer’s instructions) to check the brix %.

7.Adjust the pump speed (down to decrease the brix %; up to increase the brix %) to achieve the correct brix % as described in Pump Speed Adjustment.

15

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Image 15
Bunn JDF-4S service manual Adjustment & Optional Settings, Temperature Compensated Refractometer Method
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JDF-4S specifications

The Bunn JDF-4S is a high-performance commercial coffee brewer designed to meet the needs of busy coffee shops, restaurants, and other establishments requiring a reliable and efficient coffee brewing solution. This versatile machine boasts an array of advanced features and technologies, making it a prominent choice among professionals in the coffee industry.

One of the most notable features of the Bunn JDF-4S is its ability to brew up to 4 gallons of coffee per hour, ensuring that establishments can keep pace with high-demand environments. This capacity makes it an ideal choice for venues that experience peak periods of coffee consumption, minimizing wait times for customers. The machine is designed with a multiple-brew option, allowing users to select various brew methods, which can cater to diverse customer preferences.

The JDF-4S incorporates Bunn’s patented brewing technology, which utilizes a precision-controlled process to ensure optimal flavor extraction. The brewed coffee is delivered at an ideal temperature, typically between 195°F and 205°F, promoting maximum taste and aroma. The machine also features a programmable digital controller that enables users to set specific brew times and adjust water temperature settings to achieve consistent results.

Another significant characteristic of the Bunn JDF-4S is its durability and ease of use. Constructed with high-quality materials, the machine is built to withstand the rigors of daily operation. The user-friendly interface features a simple touchpad design for easy navigation and programming. Additionally, the machine includes a built-in diagnostics program, helping users quickly identify and troubleshoot potential issues, thereby minimizing downtime.

The JDF-4S also offers flexible brewing options, including iced coffee brewing, enhancing its versatility. It is compatible with Bunn’s extensive range of coffee and tea dispensers, allowing businesses to expand their beverage offerings effortlessly. Furthermore, the unit features an easy-access water reservoir for quick refilling and reduced wait times during busy service periods.

In terms of maintenance, the Bunn JDF-4S is designed with user convenience in mind. The machine includes a rinse and clean cycle to ensure optimal hygiene and coffee quality. Integrated clean alerts guide users through the cleaning process, promoting regular upkeep and ensuring the longevity of the brewer.

In summary, the Bunn JDF-4S represents a cutting-edge solution for coffee brewing that prioritizes performance, versatility, and ease of use. With its advanced brewing technology, user-friendly features, and robust construction, it offers an exceptional choice for businesses seeking to serve high-quality coffee efficiently.
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