Bunn AFPO-3 SL manual VACUUM/SUPPLY Pump Assembly

Page 19

SERVICE (cont.)

VACUUM/SUPPLY PUMP ASSEMBLY

1 2

3

 

1

 

1

 

2

2

3

 

3

P1521

FIG. 22 VACUUM/SUPPLY PUMP ASSEMBLY

Location:

The vacuum/supply pumps are located inside the autofill box.

Test Procedure:

1.Disconnect the dispenser from the power source.

2.Disconnect the white wire from the pump lead and the yellow, orange or red wire from the other lead.

3.Connect the dispenser to the power source. With a voltmeter, check the voltage across the white wire and yellow, orange or red wire. Push the pump (flavor) switch for the pump to be tested. The indication must be :

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

b)200 to 240 volts ac for two wire 200 or 240 volt models.

c)230 volts ac for two wire 230 volt models.

4.Disconnect dispenser from the power source.

If voltage is present as described, replace the pump. If voltage is not present as described, refer to the Wiring Diagrams and check main wiring harness.

Pump Motor Removal and Replacement:

NOTE: Do not disconnect or damage tubing. Tubing is not replaced when pump is replaced.

1.Disconnect the pump motor leads.

2.Remove the four thumb screws securing the pump head to the pump body.

3.Remove the two #8-32 keps nuts securing the pump motor/bracket assembly to the refill unit.

4.Remove the two #6-32 screws securing the pump motor to its mounting bracket.

5.Reattach this bracket to the new motor, and reinstall the assembly in the refill unit.

6.Reattach the pump head to the rear of the pump motor with the four thumbscrews.

7.Reconnect the pump motor leads. Refer to Fig. 23 to reconnect the wires.

Pump Removal and Replacement:

NOTE: Do not disconnect or damage tubing. Tubing is not replaced when pump is replaced.

1.Remove the four thumb screws securing the pump head to the pump body.

WHI from Solenoid #2

 

YEL from Pump Switch #1

 

WHI from Pump #1

 

ORN from Pump Switch #2

 

WHI from Solenoid #3

 

RED from Pump Switch #3

 

FIG. 23 VACUUM/SUPPLY PUMP TERMINALS

P1526

 

19

41093 040408

 

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Contents AFPO-3 SL BUNN-O-MATIC Commercial Product Warranty User Notices MIX Ratio Adjustments Cleaning Recommended Weekly CleaningMIX Ratio ADJUSTMENTScont Probe Control BOX LOW/OFF/HIGH Main Power ON/OFFRefill Circuit ON/OFF TEST/OPERATEProblem Probable Cause Remedy TroubleshootingTroubleshooting Component Access ServiceCircuit Board Circuit BoardLocation Fuse and Fuse HolderMain ON/OFF Switch ServiceProbe System Probe Switches#3 AFPO-3 only Pump Flavor ON/OFF SwitchesRefill Switches Refill SwitchesOnly White wire from the solenoidSolenoid Water ON/OFF Switches Solenoid Water ON/OFF SwitchesTEST/OPERATE Switch VACUUM/SUPPLY Pump Assembly VACUUM/SUPPLY Pump AssemblyTubing Start Position VACUUM/SUPPLY Pump Tube InstallationVacuum Switches Vacuum SwitchesPiping Diagram AFPO-2 Schematic Wiring Diagram AFPO-2 41093 Schematic Wiring Diagram AFPOA-2
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AFPO-3 SL 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.
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