SERVICEcont, Auger Motors, Motor Coil Resistance

Bunn ULTRA-1 manual SERVICEcont, Auger Motors, Motor Coil Resistance

SERVICE(cont.)

AUGER MOTORS

ULTRA-2 shown
FIG. 1 AUGER MOTORS	P1341

Location

The auger motors are located at the upper rear of the dispenser chassis inside the auger motor covers.

Test Procedures

1.Remove the hopper from the same side as the motor to be tested.

2.Turn “ON” the appropriate auger switch.

3.Nudge the auger to start it turning.

If the auger doesn’t turn, replace the motor.

If auger starts to turn, replace the start capacitor.

WARNING: The compressor start capacitor must be properly discharged before removing. This is most commonly done on low voltage capacitors by shorting across the terminals with a screwdriver.

Removal and Replacement

1.Remove the two #8 locking screws securing the auger motor cover to the cooling drum mount assembly.

2.Remove the cover and set aside for reassembly.

3.Remove the #8 locking screw on the lower right side of the auger motor mounting bracket securing the auger motor run capacitor. Set capacitor aside with wires at- tached.

4.Disconnect the auger motor terminal from the terminal on the main wiring harness.

5.Remove the three remaining #8 locking screws secur- ing the auger motor mounting bracket to cooling drum mounting bracket.

6.Remove motor with mounting bracket, drip tray, split pin and torsion spring bearing as an assembly.

NOTE: When removing or installing the motor be sure the split pin in the motor shaft is turned to a position that will clear the torque sensor circuit board.

7.Install new motor with mounting bracket, drip tray, split pin and torsion spring bearing using three #8 locking screws onto the cooling drum bracket.

8.Install the auger motor capacitor on the lower right side of the auger mounting bracket, using the remaining #8 locking screw.

9.Connect the auger motor terminal to the terminal on the main wiring harness.

10.Refer to Fig. 2 when reconnecting the wires.

ULTRA-2 LEFT AUGER MOTOR

J1-1 BRN/WHI to Left Auger Motor Capacitor

J1-2 BRN/BLK to J5-3 of Control Board

J1-3 WHI to Main Harness

ULTRA-2 RIGHT AUGER MOTOR

J1-1 WHI/RED to Right Auger Motor Capacitor

J1-2 RED/BLK to J5-1 of Control Board

J1-3 WHI to Main Harness

J1-1	Boost Coil	ULTRA-1 AUGER MOTOR
		J1-1 BRN/WHI to Auger Motor Capacitor
J1-2	Run Coil	J1-2 BRN/BLK to J10-9 of Control Board
J1-3	Common
		J1-3 WHI to Main Harness

FIG. 2 AUGER MOTOR TERMINALS

MOTOR COIL RESISTANCE

J1-3 to:	J1-1 = 58 ohms	J1-2 = 58 ohms
WHITE	BLACK	RED

23	41084 102709

ULTRA-1 specifications

The Bunn ULTRA-1 is a state-of-the-art coffee brewing system designed for commercial use, offering an unmatched combination of speed, efficiency, and flavor extraction. This single-serve coffee brewer is tailored for businesses that require high-quality coffee brews in a fast-paced environment, such as cafes, restaurants, and office kitchens.

One of the standout features of the Bunn ULTRA-1 is its ability to brew up to 14 different cup sizes, accommodating various customer preferences. This flexibility allows operators to serve everything from small espresso shots to larger coffee servings, making it a versatile addition to any beverage-serving establishment. At the heart of this brewing system is Bunn's patented brewing technology, which ensures precise water temperature and ideal brew time, optimizing the extraction process for a full-bodied flavor profile.

The ULTRA-1 is equipped with a large, easy-to-read LCD screen that provides real-time feedback, allowing users to monitor brewing progress, select cup sizes, and customize brewing parameters. This intuitive interface simplifies operation, reducing the learning curve for new staff members and enhancing overall efficiency during peak hours.

Another innovative aspect of the Bunn ULTRA-1 is its advanced thermal carafe system, which keeps brewed coffee at the optimal serving temperature without the need for a traditional warming plate. This technology helps preserve the coffee's rich flavor and aroma by preventing it from becoming bitter or stale due to prolonged exposure to heat.

The ULTRA-1 emphasizes ease of maintenance with its removable brew chamber and drip tray, allowing for quick cleaning and routine upkeep. Additionally, the brewer features a self-diagnostic system, alerting operators to any potential issues, further minimizing downtime.

From its sleek design to its robust construction, the Bunn ULTRA-1 combines aesthetics and durability, making it a reliable choice for any coffee-centric business. The compact design ensures it can fit on counters without taking up excessive space, while its stainless steel components provide longevity and resistance to wear and tear.

In conclusion, the Bunn ULTRA-1 stands out in the crowded market of commercial coffee brewers due to its advanced technology, versatility, and user-friendly features. It is designed to meet the demands of modern coffee service while ensuring that every cup brewed meets the highest standards for taste and quality.