Bunn AFPO-2 MIX Ratio ADJUSTMENTScont, Time for Flavor Output 1/2 cup Time for Water Output 1 cup

Page 5

MIX RATIO ADJUSTMENTS(cont.)

6.Compare results with chart or formula below.

7.If the time observed is too short or long, turn the needle valve clockwise or counterclockwise, respectively, a little at a time. Repeat from the preceding step until correct.

Mix ratio (water/flavor)

Time for FLAVOR OUTPUT (1/2 cup)

Time for WATER OUTPUT (1 cup)

 

 

 

1+1

assume 20 sec. or obtain time per note below

40 sec. or 2 times flavor output time

 

 

 

2+1

assume 20 sec. or obtain time per note below

20 sec. or equal to flavor output time

 

 

 

3+1

assume 20 sec. or obtain time per note below

13.3 sec. or 0.67 times flavor output time

 

 

 

4+1(see below)

assume 20 sec. or obtain time per note below

10 sec. or 0.5 times flavor output time

 

 

 

5+1

assume 20 sec. or obtain time per note below

8 sec. or 0.4 times flavor output time

6+1

assume 20 sec. or obtain time per note below

6.7 sec. or 0.33 times flavor output time

 

 

 

NOTE: For a typical adjustment, the time for flavor output in the center column above is assumed to be 20 seconds. A more specific flavor pump output time may be obtained prior to adjustment of the needle valve. To do so, connect the flavor to be tested to the “FLAVOR INPUT”, and the test hose to the corresponding “FLAVOR OUTPUT” (make no connection to the “WATER INPUT”). With a one-cup container under the test hose press the corresponding “TEST OUTPUT” switch, and carefully measure and note the elapsed time from when the product first flows from the test hose to when one-half cup of the product has been dispensed. This value may then be used in the formula below. Following flavor pump output measurement, disconnect the flavor line from the “FLAVOR INPUT” and purge remaining product from the line.

Formula for setting mix ratio: To obtain the time for dispensing 1 cup of water, divide the time it takes to dispense one-half cup of product by the first number in the mix ratio and then multiply the result by two.

Example: W=2(F/X) Where W is the time it should take to dispense one cup of water, it took F seconds (20 here) to dispense 1/2 cup of flavor concentrate, we desire a mix ratio X of 4+1 (X will be the first number in the mix ratio, 4).

Therefore:

W = 2/(20/4)

 

W = 2/5

 

W = 10 seconds

So if it took 20 seconds to dispense one-half cup of flavor concentrate, and a mix ratio of 4 to 1 is required, the needle valve should be adjusted to dispense 1 cup of water in 10 seconds. NOTE: Hoses and tubing should be primed and free of substantial air spaces and/or bubbles prior to calibration.

 

1

 

2

 

3

1

1

 

2

2

 

3

 

3

 

NEEDLE VALVE

P1521

 

5

28791 040501

 

Page 4 Page 6
Image 5
Page 4 Page 6
Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisUser Notices WarrantyIntroduction Electrical Hook-Up Electrical RequirementsPlumbing Requirements Initial SET-UPInitial SET-UP Cleaning Recommended Weekly CleaningMIX Ratio Adjustments Time for Flavor Output 1/2 cup Time for Water Output 1 cup MIX Ratio ADJUSTMENTScontRefill Circuit ON/OFF Main Power ON/OFFTEST/OPERATE Probe Control BOX LOW/OFF/HIGHProblem Probable Cause Remedy TroubleshootingTroubleshooting Contents Component AccessCircuit Board Circuit Board Connector LocationLocation Fuse and Fuse HolderMain ON/OFF Switch ServiceMoving Probe System#1 AFPO-2 Pump Flavor ON/OFF Switches#2 AFPO-2 #3 AFPO-3 onlyRefill Switches Refill SwitchesOnly #2 AFPO-2 #3 AFPO-3Solenoid Water ON/OFF Switches Solenoid Water ON/OFF SwitchesTEST/OPERATE Switch Terminals Pump Motor Removal and Replacement VACUUM/SUPPLY Pump AssemblyTubing Start Position VACUUM/SUPPLY Pump Tube InstallationVacuum Switches Vacuum SwitchesPiping Diagram AFPO-2 Schematic Wiring Diagram AFPO-2 Schematic Wiring Diagram AFPO-3 Schematic Wiring Diagram AFPOA-2
Related manuals
Manual 25 pages 230 b Manual 8 pages 54.73 Kb

AFPO-2, AFPO-2 SL, AFPO-3 specifications

The Bunn AFPO-2 SL, AFPO-3 SL, and AFPO-3 are advanced coffee brewing systems that cater to the needs of commercial establishments seeking efficiency and high-quality coffee production. These machines are designed for ease of use, high throughput, and flexibility, making them ideal for coffee shops, restaurants, and workplaces.

The Bunn AFPO-2 SL is known for its dual-brew capabilities, allowing users to brew coffee and tea simultaneously. This model features a sleek, stainless-steel design that fits well in various settings. It comes equipped with an electronic controls interface that ensures precise brewing temperatures and times, enabling baristas to consistently produce flavorful coffee. The AFPO-2 SL has a brewing capacity of up to 3.8 gallons per hour, making it suitable for high-demand environments.

Another standout model is the Bunn AFPO-3 SL, which builds upon the features of the AFPO-2 SL with an increased brewing capacity of up to 4.5 gallons per hour. This model includes a programmable digital control module, which allows users to customize brew cycles for different coffee blends, enhancing versatility. The AFPO-3 SL is designed with stainless-steel construction, ensuring durability and longevity while maintaining easy cleaning and maintenance routines.

The hallmark of the Bunn AFPO-3 is its single-serve capability, which provides a fresh-brewed experience for every cup. With advanced technology that ensures optimal water temperature and flow rate, the AFPO-3 guarantees rich and robust flavors in every pour. This model is ideal for establishments that want to offer their customers a variety of coffee options without sacrificing quality or speed. It also features an intuitive user interface, allowing staff to operate the machine with minimal training.

All three models are equipped with a built-in hot water tap, providing instant access to hot water for tea or other beverages, further increasing their utility in busy environments. The Bunn AFPO series is known for its reliability, with heavy-duty components that withstand the rigors of daily use.

In summary, the Bunn AFPO-2 SL, AFPO-3 SL, and AFPO-3 represent the pinnacle of brewing technology in the commercial coffee market. With their advanced brewing capabilities, user-friendly designs, and robust construction, these machines are perfectly suited for any establishment that values quality coffee and operational efficiency.
Top Page Image Contents