Bunn HC-2 HC-3 Frother and Whipper Motor, Steam Collector #6-32 Screw Mixing Chamber, Ring

Page 20

SERVICE (cont.)

FROTHER AND WHIPPER MOTOR

P1203.45

FIG. 11 FROTHER AND WHIPPER MOTOR

Location:

The frothers are located behind the dispenser door, mounted on the front of the front panel inside the whipper chamber.

The whipper motors are located on the back side of the front section of the front panel.

NOTE: The center position is for HC-3 Models only.

Test Procedure:

1. Disconnect the dispenser from the power source.

2. Disconnect the white/violet and white wires on the right motor, white/blue and white wires on the center motor or the white/red and white wires on the left motor from the black leads on the motors.

3. Press and hold the appropriate dispense switch and check the voltage across the disconnected harness wires with a voltmeter. Connect the dis- penser to the power source. The reading must be:

20

a)120 volts ac for two wire 120 volt models.

b)120 volts ac for three wire 120/208 volt or 120/ 240 volt models.

c)240 volts ac for two wire 240 volt models.

4.Disconnect the dispenser from the power source.

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

 

 

 

 

 

 

 

 

1

2

 

12

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

 

 

 

10

9

8

7

6

5

4

3

 

 

FIG. 12 MIXING/WHIPPER CHAMBER

P1206

 

 

 

 

 

COMPONENTS

 

 

1.

Steam Collector

 

 

7.

#6-32 Screw

 

2.

Mixing Chamber

 

 

8.

Receptical w/Seal

3.

Dispense Tip

 

 

 

9.

Teflon Washer

 

4.

Whipper Chamber

 

 

10.

O-Ring

 

5.

O-Ring

 

 

 

 

11.

#8-32 Acorn Nut

6.

Frother

 

 

 

 

12.

Motor Assy.

 

Removal, Cleaning and Replacement (Refer to Fig. 12):

1.Open the dispenser door.

2.Remove the steam collector (1) by pulling it for- ward and at the same time twisting it clockwise.

3.Pull the mixing chamber (2) out of the whipper chamber (4).

27591 031597

Page 19 Page 21
Image 20
Page 19 Page 21
Contents BUNNHC-2 Serial # HC00025000 UPWarranty Introduction27620.0000 User Notices12368.0002 Initial SET-UP Electrical RequirementsElectrical HOOK-UP Plumbing RequirementsCleaning AdjustmentsDispenser USE Cold Beverage SET-UP OptionalHopper Dispense Rate of Product TroubleshootingDraining the HOT Water Tank Troubleshooting Problem Probable Cause RemedyProblem Problem Probable Cause Dripping from dispense tip Lime build-upOn stainless steel surfaces can Ing in serious leaksWeak product Water temperature Testing procedure. See30 or Tip with a thermometerTroubleshooting Problem Probable Cause RemedyService Component AccessContents Auger Drive ComponentsAuger Drive Components If voltage is present as described, proceed to #5Washer Auger Motor Locknut Dust Seal Shoulder Screw Hopper AssyService Right HC-2Location Test ProcedureBallast Remove temperature probe from the tank Control ThermostatLocation Mechanical Thermostat Electronic Thermostat OptionalControl Thermostat Thermostat TerminalsDispense Switch Dispense SwitchTest Procedures FANFrother and Whipper Motor Steam Collector #6-32 Screw Mixing ChamberRing Pull the mixing chamber 2 out of the whipper chamberFrother and Whipper Motor Whipper Motor TerminalsHopper Delay Board Reconnect the eight pin connector to the hopper delay boardHOT/COLD Switch Optional Disconnect the wires from the switch termi- nalsDoor Assy Lamp Replacement Refer to FigLamp Holder Service Level Control Board and Level Probe Level Control Board and ProbeLevel Board Terminals Limit ThermostatOverflow Protection Switch Overflow Protection SwitchRUN/RINSE Switch RUN/RINSE SwitchSolenoid Valve Cold Water Optional Cold Water Solenoid ValveCold Water Solenoid Terminals Solenoid Valves DispenseSolenoid Valve Inlet Solenoid Valves DispenseDisconnect the water line from the solenoid valve Solenoid Valve Inlet Tank HeaterTank Heater Refer to when reconnecting the wires to the tank heaterTank Heater Switch Tank Heater Switch Tank Heater Switch TerminalsTransformer 240V TWO Wire MODELSONLYcontSchematic Wiring Diagram HC-2, & HC-3 Schematic Wiring Diagram HCA-2, & HCA-3

HC-2 HC-3 specifications

The Bunn HC-2 and HC-3 are high-performance commercial coffee brewers designed for cafes, restaurants, and institutions that prioritize quality, efficiency, and reliability. Renowned for their exceptional brewing capabilities, both models come with a range of features that cater to the demanding needs of coffee enthusiasts and professionals alike.

One of the core characteristics of the Bunn HC-2 and HC-3 is their brewing technology. These machines utilize a patented steeping mechanism that allows for optimal water temperature and contact time, extracting the finest flavors from the coffee grounds. The precise temperature control, maintained at a consistent level, ensures that every cup of coffee is brewed to perfection. Furthermore, the machines have an impressive brew capacity, with the HC-2 capable of brewing up to 3.8 gallons per hour, while the HC-3 can brew up to 5.3 gallons per hour, making them ideal for high-traffic environments.

Another significant feature of the Bunn HC-2 and HC-3 is their ease of use. The user-friendly interface allows baristas to quickly set brew cycles and adjust brewing parameters to suit different coffee types. Both models are designed with a sleek, ergonomic aesthetic that fits seamlessly into any workspace, while also being built with durable materials to withstand the rigors of daily use.

In terms of efficiency, these brewers come equipped with energy-saving technology. The automatic warmers on both machines adjust the heat output based on the coffee’s temperature, reducing energy consumption without compromising quality. Additionally, the compact design of these units means they occupy minimal counter space, making them suitable for both small and large establishments.

Maintenance is straightforward with the Bunn HC-2 and HC-3, as they feature a self-diagnostic system that alerts users to any potential issues. This feature minimizes downtime and ensures the longevity of the equipment. Furthermore, the brewing components can be easily accessed for cleaning and maintenance.

In summary, the Bunn HC-2 and HC-3 stand out in the commercial coffee brewing market with their advanced brewing technology, high capacity, user-friendly design, energy efficiency, and ease of maintenance. These features make them a preferred choice for anyone looking to deliver high-quality coffee consistently, ensuring that businesses can satisfy even the most discerning coffee drinkers. With Bunn’s commitment to innovation and quality, these brewers continue to set the standard in the coffee equipment industry.
Top Page Image Contents