Bunn manual FAN ULTRA-1, Fan

Page 43

SERVICE (cont.)

FAN - ULTRA-1

FIG. 42 FAN

Location:

The fan assembly is located inside the rear of the dispenser chassis behind the condenser.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Connect a voltmeter across pins 1 and 2 of either fan connector of the main wiring harness.

3.Connect the dispenser to the power source.

4.Turn on Power (I/O) Switch. Verify the dispenser is in the “DAY” mode.

The indication must be:

a)12 volts dc in the “DAY” mode,

b)0 volts dc in the “NIGHT” mode.

If voltage is present as described, proceed to step 5. If voltage is not present as described, refer to the Wiring Diagrams and check the main wiring harness.

5.Check for continuity with an ohmmeter across the red and black wires of the fan.

If continuity is present as described, the fan is operat- ing properly.

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

6. Repeat test for other fan.

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Remove the air filter from the back of the dis- penser.

3.Remove the four #8-32 hex screws attaching the fan and shroud assy to the condenser frame.

4.Disconnect the wiring harness from the fan being replaced.

5.Remove the four screws attaching the fan to the fan shroud and replace the fan.

6.Install the new fan such that the direction of air flow matches that of the remaining fan. (arrow on fan pointing toward condenser)

7.Reconnect the fan to the main wiring harness.

8.Install the fan and shroud assembly to the condenser frame.

9.Replace the air filter and reconnect the dispenser to power.

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41084 102709

 

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Contents Phone 217 529-6601 FAX 217 ULTRA-1 ULTRA-2BUNN-O-MATIC Commercial Product Warranty User Notices ContentsIntroduction Temp & Torque Screen Operating Controls ULTRA-1 Operating Controls ULTRA-2 Switch upper left corner of the control padOne side of the handle first, then Recommended Daily Cleaning ULTRA-2 shownOther and disconnect from Be taken when handling Hopper From the rear of the drum Under spring tension. SpreadAuger nose Recommended Daily CleaningDrums and press the seals Firmly into place as shownSanitizing Procedure Auto-fill Cleaning Instructions With Brixing Pump InstalledMaterials required Normal Operation Preventive MaintenanceDescription Required Regular Maintenance Semi AnnualKit Contents InstructionsRequired Regular Maintenance No Power TroubleshootingBoard Done Adjust Clean Troubleshooting Chills but Won’t freezeSet into DAY mode Set into ICE mode Is display showingYes Dirty? Check fan Have a certified Troubleshooting No cooling At allAdjust thickness Screen higher Troubleshooting Freezes, but not Thick enoughBrix ratio Too much Auger won’t turn Troubleshooting NoiseAuger jumping Check fan Drum alignment Check auger shaft bushingsTorque Sensor Shorted Torque Sensor Open TroubleshootingTorque Sensor Error Torque Sensor ErrorTemperature Sensor Shorted Troubleshooting Temperature Sensor ErrorTemperature Sensor Open Monthly reminder Troubleshooting Clean Filter MessagesFilter Needs Cleaning Freezing is DisabledComponent Access Panels ServiceAuger Motors SERVICEcontMotor Coil Resistance Auger Motor Capacitors Auger Motor CapacitorAuger Shaft Assembly Auger Shaft AssemblyRemove and clean condenser air filter, Fig Service Auger Shaft ASSEMBLYcontLocation Test ProceduresRemove the wires from the circuit breaker Circuit Breaker120V Compressors 230V Compressors Compressor Start Relay Terminals Service Compressor Assy Compressor Embraco ULTRA-2Model T-2155 Service Compressor Embraco ULTRA-2Model T-2168 Secure compressor to the dispenser chassis using four Compressor Thermal Compressor Appliances ULTRA-1Relay Terminals Service Service Compressor Danfoss ULTRA-1B Compressor Capacitor Terminals Service Relay or Contactor on Early Models Control Board ULTRA-2 Control BoardCooling Drum Shipping Support Cooling Drum AlignmentUse cable ties to secure wires away from fan blades Front of the condenser Test ProceduresFAN ULTRA-2 FAN FAN ULTRA-1Alternate Test HOT GAS Temperature SensorLamp Cord Assy Lamp Cord WiresLamp Cord Connector Lamp Cord ConnectorLamp HOLDER/SOCKET Assembly Lamp HOLDER/SOCKET AssemblyULTRA-2 ULTRA-1 Lamp RelayRibbon Cable Membrane Switch ULTRA-2Refer to and connect the ribbon cable to the Control Board Membrane Switch ULTRA-1WHI from Main Harness SolenoidsTemperature Sensor Temperature SensorTorque Sensor Circuit Board Remove the cover and set aside for reassemblyDo not Turn on Augers Load TransformerCoolant Schematic ULTRA-1 Coolant Schematic ULTRA-2 ULTRA-1 Triacs Triac MAP for ULTRA-1TH1 & MOV4 Controls Auger Liquid AUTO-FILL Board ULTRA-2 Triacs Triac Maps for ULTRA-2TH6 & 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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