Bunn ULTRA-1 manual Service

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SERVICE (cont.)

COMPRESSOR (AMERICOLD) (ULTRA-2) (cont.)

Removal and Replacement:

Compressor Assy:

NOTE: Before removal of any refrigeration component the refrigerant in the system must be reclaimed by a licensed refrigeration repair person.

NOTE: When replacing the compressor it is recommended that the dryer also be replaced.

1.Disconnect the tubes from the condenser and the ac- cumulator.

2.Disconnect the compressor wiring harness from the dispenser main wiring harness.

3.Remove the four .25-20 keps nuts and washers securing the compressor to the chassis. Set nuts and washers aside for reassembly.

4.Disconnect and remove the transformer.

5.From the right side of the dispenser lift the compressor assembly over the four studs in the chassis and remove compressor.

6.Install new compressor over the four studs in the dis- penser chassis with the fill valve to the left side of the dispenser.

7.Secure compressor to the dispenser chassis using four

.25-20 keps nuts and washers.

8.Reconnect tubes from the condenser and the accumula- tor to the compressor.

9.Reinstall transformer.

10.Evacuate the system.

11.Recharge 120V system with 10 oz. of Type 404A refrig- erant. Design Pressures: High 240 - Low 34 Recharge 230V system with 9.5 oz. of Type 404A re- frigerant. Design Pressures: High 215 - Low 40

NOTE: The charging of the system must be done by a li- censed refrigeration repair person.

NOTE: Refer to Wiring Diagrams when reconnecting wires to Compressor, Thermal Overload Protector, Start Relay, and Run Capacitor.

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41084 102709

 

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Contents ULTRA-1 ULTRA-2 Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents User NoticesIntroduction Temp & Torque Screen Operating Controls ULTRA-1 Switch upper left corner of the control pad Operating Controls ULTRA-2From the rear of the drum Under spring tension. Spread Recommended Daily Cleaning ULTRA-2 shownOther and disconnect from Be taken when handling Hopper One side of the handle first, thenFirmly into place as shown Recommended Daily CleaningDrums and press the seals Auger noseAuto-fill Cleaning Instructions With Brixing Pump Installed Sanitizing ProcedureMaterials required Preventive Maintenance Normal OperationInstructions Required Regular Maintenance Semi AnnualKit Contents DescriptionRequired Regular Maintenance Troubleshooting No PowerBoard Set into ICE mode Is display showing Troubleshooting Chills but Won’t freezeSet into DAY mode Done Adjust CleanTroubleshooting No cooling At all Yes Dirty? Check fan Have a certifiedTroubleshooting Freezes, but not Thick enough Adjust thickness Screen higherBrix ratio Too much Drum alignment Check auger shaft bushings Troubleshooting NoiseAuger jumping Check fan Auger won’t turnTorque Sensor Error TroubleshootingTorque Sensor Error Torque Sensor Shorted Torque Sensor OpenTroubleshooting Temperature Sensor Error Temperature Sensor ShortedTemperature Sensor Open Freezing is Disabled Troubleshooting Clean Filter MessagesFilter Needs Cleaning Monthly reminderService Component Access PanelsSERVICEcont Auger MotorsMotor Coil Resistance Auger Motor Capacitor Auger Motor CapacitorsAuger Shaft Assembly Auger Shaft AssemblyService Auger Shaft ASSEMBLYcont Remove and clean condenser air filter, FigCircuit Breaker Test ProceduresRemove the wires from the circuit breaker Location120V Compressors 230V Compressors Compressor Start Relay Terminals Service Compressor Embraco ULTRA-2 Compressor AssyService Compressor Embraco ULTRA-2 Model T-2155Model T-2168 Secure compressor to the dispenser chassis using four Compressor Appliances ULTRA-1 Compressor ThermalRelay Terminals Service Service Compressor Danfoss ULTRA-1B Compressor Capacitor Terminals Service Relay or Contactor on Early Models Control Board Control Board ULTRA-2Cooling Drum Alignment Cooling Drum Shipping SupportFront of the condenser Test Procedures Use cable ties to secure wires away from fan bladesFAN ULTRA-2 FAN ULTRA-1 FANHOT GAS Temperature Sensor Alternate TestLamp Cord Wires Lamp Cord AssyLamp Cord Connector Lamp Cord ConnectorLamp HOLDER/SOCKET Assembly Lamp HOLDER/SOCKET AssemblyLamp Relay ULTRA-2 ULTRA-1Membrane Switch ULTRA-2 Ribbon CableMembrane Switch ULTRA-1 Refer to and connect the ribbon cable to the Control BoardSolenoids WHI from Main HarnessTemperature Sensor Temperature SensorRemove the cover and set aside for reassembly Torque Sensor Circuit BoardDo not Turn on Augers Transformer LoadCoolant Schematic ULTRA-1 Coolant Schematic ULTRA-2 Triac MAP for ULTRA-1 ULTRA-1 TriacsTH1 & MOV4 Controls Auger Triac Maps for ULTRA-2 Liquid AUTO-FILL Board ULTRA-2 TriacsTH6 & MOV6 Controls Right Auger Input and Output Chart ULTRA-1 41084 Input and Output Chart ULTRA-2 41084 41084
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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.
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