Bunn manual FAN ULTRA-2, Front of the condenser Test Procedures

Page 46
FIG. 39 FAN

SERVICE (cont.)

FAN - ULTRA-2

Location: The fan is located inside the dispenser chassis just

in front of the condenser.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the gray and white wires from the main harness to the fan leads.

3.With a voltmeter, check the voltage across the gray and the white wires. Connect the dispenser to the power source. In the “ICE” or “CHILL” mode; The indication must be:

a)120 volts ac for 120 volt models.

b)230 volts ac for 230 volt models.

4.Disconnect the dispenser from the power source. If voltage is present as described, replace the fan.

If voltage is not present as described, refer to Wiring Diagram and check the dispenser wiring harness.

Removal and Replacement (Refer to Fig. 40)

NOTE: Leave the hopper in place. This keeps it in align- ment while the condenser shroud is removed.

1.Disconnect the fan leads from the wiring har- ness.

2.Remove the four #6 crimptite screws securing the condenser shroud and fan assy (1) to the condenser and the two #8-32 locking screws securing the condenser shroud and fan assy (1) to the chassis base.

3.Remove the condenser shroud and fan assy from the right side of the dispenser.

4.Remove the three #6 thread cutting screws securing the fan assy to condenser shroud (7). Set condenser shroud and screws aside for reassembly.

5.Remove the three #8-32 thread forming screws securing motor (5) to condenser fan shroud/mount

(6). Set shroud and screws aside for reassembly.

 

 

 

1

2

3

4

 

 

 

5

6

7

 

 

 

FIG. 40 FAN COMPONENTS

 

6.Remove speed nut (2) from the motor shaft.

7.Remove fan (3).

8.Remove silencer (4).

1. Condenser Shroud and Fan Assy

2.

Speed Nut

3.

Fan Blade

4.

Silencer

5.

Motor

6.

Shroud/Mount

7.

Condenser Shroud

9.Install silencer (4) on new motor assy.

10.Install fan (3) on new motor assy.

11.Install speed nut (2) on new motor assy.

12.Using three #8-32 thread forming screws secure new motor assy to shroud/mount (6).

13.Using three #6-32 thread cutting screws secure new motor and shroud/mount to the condenser shroud

(7).

14.Using two #8-32 locking screws secure condenser shroud and fan assy (1) to the chassis base.

15.Using four #8-32 crimptite screws secure the con- denser shroud and fan assy (1) to the condenser.

16.Refer to Fig. 41 and reconnect the leads on the new motor to the dispenser wiring harness.

17.Use cable ties to secure wires away from fan blades.

 

 

 

 

BLK to Main Harness WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK to Main Harness GRY

P1326

 

 

 

 

 

FIG. 41 FAN MOTOR TERMINALS

 

 

 

 

 

 

 

 

 

 

46

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-2One side of the handle first, then Other and disconnect from Be taken when handling HopperFrom the rear of the drum Under spring tension. Spread SurfaceAuger nose Drums and press the sealsFirmly into place as shown Assemble the drip traySanitizing Procedure Materials requiredPreventive Maintenance Normal OperationInstructions Required Regular MaintenanceKit Contents DescriptionRequired Regular Maintenance No Power TroubleshootingBoard Set into ICE mode Is display showing Troubleshooting Chills but Won’t freezeSet into DAY mode Done Adjust CleanTroubleshooting No cooling At all Adjust thickness Screen higher Troubleshooting Freezes, but not Thick enoughBrix 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 OpenTemperature Sensor Shorted Troubleshooting Temperature Sensor ErrorTemperature Sensor Open Freezing is Disabled Troubleshooting Clean Filter MessagesFilter Needs Cleaning Monthly reminderService Component Access PanelsAuger Motors SERVICEcontMotor 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 AssyModel T-2155 Service Compressor Embraco ULTRA-2Model T-2168 Secure compressor to the dispenser chassis using four Compressor Model Compressor SpecificationCSR Motor Wiring Diagram Capacitor RatingsImportant Safeguards Compressor Wiring DiagramTesting Compressor Windings/Insulation with a Meg- ger Disconnect all electrical power to the Bunn ULTRA-2 HPStart Capacitor External Thermal ProtectorPotential Start Relay Mounting Position Run CapacitiorCompressor Appliances ULTRA-1 Compressor ThermalRelay Terminals Service Service Compressor Danfoss ULTRA-1B Compressor Capacitor Terminals Service Relay or Contactor on Early Models Control Board TIC boardCooling Drum Alignment Cooling Drum Shipping SupportUse cable ties to secure wires away from fan blades Front of the condenser Test ProceduresFAN 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 AssemblyService LED Lamps Disconnect the black and red leads from the LEDsLamp 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 SensorTorque Sensor Circuit Board Do not Turn on AugersTransformer LoadCoolant Schematic ULTRA-1 Coolant Schematic ULTRA-2 ULTRA-1 Triacs TH1 & MOV4 Controls AugerLiquid AUTO-FILL Board ULTRA-2 Triacs TH6 & MOV6 Controls Right AugerInput and Output Chart ULTRA-1 Schematic Wiring Diagram ULTRA-1 Input and Output Chart ULTRA-2 Schematic Wiring Diagram ULTRA-2 AF 41084
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ULTRA-2 specifications

The Bunn ULTRA-2 is an exceptional frozen beverage dispenser that caters to both commercial and home use, making it a popular choice in various establishments such as cafes, restaurants, and convenience stores. Renowned for its reliability and efficiency, the ULTRA-2 serves a wide range of frozen beverages, including slushes, smoothies, and frozen cocktails, providing an irresistible treat for customers.

One of the standout features of the Bunn ULTRA-2 is its high-capacity design. With a dual hopper system, this machine allows operators to serve two different flavors simultaneously. Each hopper can hold up to 3.2 gallons of product, allowing for continuous service without the need for frequent refills. This is particularly advantageous during peak hours when demand is high.

The ULTRA-2 is equipped with Bunn's advanced refrigeration technology, which ensures rapid freezing and consistent product quality. The machine uses a patented freezing mechanism that maintains optimal product texture and temperature, resulting in a smooth, uniform consistency that keeps customers coming back for more. Additionally, the ULTRA-2's adjustable temperature control allows operators to customize the consistency of the beverages to their liking.

User-friendliness is another hallmark of the Bunn ULTRA-2. The machine features intuitive controls that simplify operation, making it easy for staff to learn and use efficiently. A built-in safety feature prevents the machine from operating when the hoppers are too low, minimizing waste and ensuring product quality.

Durability and ease of maintenance are also prominent characteristics of the ULTRA-2. Constructed from high-quality stainless steel, the machine offers enhanced longevity and is resistant to rust and corrosion. The removable hoppers and door assemblies facilitate quick cleaning and maintenance, allowing businesses to keep the machine in top working condition with minimal effort.

In summary, the Bunn ULTRA-2 stands out in the crowded market of frozen beverage dispensers through its dual hopper functionality, advanced refrigeration technology, user-friendly design, and robust construction. Whether for a busy café or a family gathering, the ULTRA-2 provides a reliable solution for delivering delicious frozen beverages that satisfy a variety of tastes and preferences.
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