Bunn AFPO-2 SL, AFPO-3 service manual Troubleshooting, Problem Probable Cause Remedy

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TROUBLESHOOTING

A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department.

•Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.

•All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the application of external voltages may result in board failure.

•Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.

•Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.

•The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help to avoid twists and kinks in the tubing.

•Make certain that all plumbing connections are sealed and electrical connections tight and isolated.

•Keep away from combustibles.

WARNING – • Exercise extreme caution when servicing electrical equipment.

•Unplug the dispenser when servicing, except when electrical tests are specified.

•Follow recommended service procedures

•Replace all protective shields or safety notices

PROBLEM

PROBABLE CAUSE

REMEDY

Product will not dispense

1. No water

Water lines and valves to the dis-

 

 

penser must be open.

 

2. No power or incorrect voltage to

(A1) Check the outlet for 120 volts

 

the dispenser

on two wire 120 volt dispensers.

 

 

(A2) Check the outlet for 200 volts

 

 

or 240 volts ac for two wire 200

 

 

volt or 240 volt dispensers.

 

 

(A3) Check the outlet for 230 volts

 

 

on two wire 230 volt dispensers.

 

 

(B) Check circuit breakers or fuses.

 

3. Signal cable unplugged

Signal cable must be plugged in.

 

4. Hopper is full

Product must not be touching

 

 

probes to fill.

 

5. Fuse and fuse holder

Refer to Service - Fuse and Fuse

 

 

Holder for test procedures. See

 

 

page 11

7

28791 040501

 

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Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisIntroduction WarrantyUser Notices Initial SET-UP Electrical RequirementsElectrical Hook-Up Plumbing RequirementsMIX Ratio Adjustments Cleaning Recommended Weekly CleaningInitial SET-UP Time for Flavor Output 1/2 cup Time for Water Output 1 cup MIX Ratio ADJUSTMENTScontProbe Control BOX LOW/OFF/HIGH Main Power ON/OFFRefill Circuit ON/OFF TEST/OPERATEProblem Probable Cause Remedy TroubleshootingTroubleshooting Contents Component AccessCircuit Board Circuit Board Connector LocationLocation Fuse and Fuse HolderMain ON/OFF Switch ServiceMoving Probe System#3 AFPO-3 only Pump Flavor ON/OFF Switches#1 AFPO-2 #2 AFPO-2Refill 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
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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.
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