Bunn AF PR-3 service manual Refill Switches, #3 AFPR-3 only

Page 12

SERVICE (cont.)

REFILL SWITCHES

 

 

P1561

 

FIG. 12 REFILL SWITCHES

 

 

Location:

The refill switches are located on the upper right front of the autofill box.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the two white/red, brown/black or red/ black wires from the switch terminals.

3.Check for voltage across the white/red, brown/ black or red black wires from the test/operate switch and the white wire on solenoid #2 or #3. Connect the dispenser to the power source. 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.

4.Disconnect the dispenser from the power source.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the wir- ing diagrams and check the dispenser wiring harness.

5.Check for continuity across the switch terminals with the switch in the “ON” position. Continuity must not be present when the switch is in the “OFF” position.

If continuity is present as described, reconnect the

wires to the switch terminals.

If continuity is not present as described, replace the switch.

Removal and Replacement:

1.Remove the wires from the switch terminals.

2.Compress the clips inside the autofill box and gently push the switch through the opening in the front of autofill box.

3.Push the new switch into the opening and spread the clips to hold switch in the autofill box.

4.Refer to Fig 13 when reconnecting the wires.

#1 AFPR-2 & 3

RED/BLK from Test/

Operate Switch

RED/BLK to Vacuum

Switch #1

#2 AFPR-2 & 3

BRN/BLK from Test/

Operate Switch

BRN/BLK to Vacuum

Switch #2

#3 AFPR-3 ONLY

WHI/RED from Test/

Operate Switch

WHI/RED to Vacuum

Switch #3

FIG. 13 REFILL SWITCH TERMINALS P1522

12

28791.1 011500

 

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Contents Bunn AF PR-2 AF PR-3 Warranty IntroductionUser Notices Initial SET-UP Electrical RequirementsElectrical Hook-Up Cleaning TroubleshootingRecommended Weekly Cleaning Main Power ON/OFF Refill Circuit ON/OFFProbe Control BOX LOW/OFF/HIGH Troubleshooting Problem Probable Cause RemedyService Component AccessCircuit Board Circuit BoardFuse and Fuse Holder Fuse HolderService Main ON/OFF SwitchRefer to when reconnecting the wires Probe SystemRefill Switches #3 AFPR-3 onlyVACUUM/SUPPLY Pump Assembly VACUUM/SUPPLY Pump AssemblyVACUUM/SUPPLY Pump Tube Installation Head cavityVacuum Switches #3#128791.1 28791.1

AF PR-3 specifications

The Bunn AF PR-3 is a high-performance coffee brewer designed for commercial use, particularly in cafés, restaurants, and other settings where quality coffee must be brewed quickly and efficiently. Known for its exceptional reliability and innovative features, the Bunn AF PR-3 has become a popular choice among coffee professionals.

One of the standout features of the AF PR-3 is its ability to brew up to 3 gallons of coffee per hour. This capacity makes it ideal for busy environments where a quick turnaround is essential. The brewer uses a patented technology that ensures optimal brewing temperature and extraction time, resulting in a rich, full-bodied flavor profile in each cup.

Another significant aspect of the Bunn AF PR-3 is its automatic features. With a programmable digital display, users can easily select brew settings and adjust individual preferences. This user-friendly interface simplifies operation and allows baristas to focus on crafting the perfect coffee every time. The unit also comes with a built-in hot water faucet that enables the brewing of other beverages, such as tea or instant soups, further enhancing its versatility.

Additionally, the Bunn AF PR-3 incorporates advanced brewing technology, including its unique "infusion" brews system. This system allows water to saturate coffee grounds evenly, promoting even extraction. As a result, the coffee brewed with the AF PR-3 exhibits a well-balanced taste with vibrant aroma, catering to the sophisticated palate of coffee aficionados.

Durability is another characteristic of the Bunn AF PR-3. The brewer is built with high-quality stainless steel, making it resistant to wear and tear, and ensuring that it can withstand the demands of a bustling café environment. The machine's components are designed for easy maintenance, allowing operators to clean and service the brewer with minimal downtime.

Moreover, the Bunn AF PR-3 is energy efficient, designed to reduce energy consumption without compromising performance. This feature not only helps in keeping operational costs down but also makes it an environmentally friendly choice for coffee businesses.

In conclusion, the Bunn AF PR-3 is a leading coffee brewer that combines speed, quality, and user-friendly technology, making it an essential piece of equipment for any commercial coffee establishment. Its ability to brew large quantities of rich, flavorful coffee efficiently, along with its durability and ease of operation, solidifies its position as a top contender in the coffee brewing market.
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