Bunn HC-2 HC-3 service manual Lamp Holder, Door Assy, Lamp Replacement Refer to Fig

Page 24

SERVICE (cont.)

LAMP HOLDER

 

1

 

 

 

2

 

 

3

 

 

4

 

 

5

6

 

2

 

 

 

FIG. 16 LAMP HOLDERS

P1209.75

 

 

1.

Door Assy

4.

Upper Cover W/Reflec-

2.

Lamp Holders

 

tor

3.

Lamp

5.

Lower Cover

6.Starter W/Socket

Location:

The lamp holders are located on the front of the reflector behind the display panel.

Test Procedure:

1.Disconnect the dispenser from the power source.

2.Disconnect the plugs on the door wiring harness from the connectors on the lamp holders.

3.Remove lamp from lamp holders.

4.Disconnect the two pin plugs of each lamp holder from the door wiring harness.

5.Check for continuity on each lead of the lamp holders.

If continuity is present as described, lamp holders are operating properly.

If continuity is not present as described replace the lamp holder.

Removal and Replacement:

1.Open dispenser door (1).

2.Remove the six #8-32 screws securing bottom door cover (5) to the door (1) and remove cover.

3.Disconnect the door wiring harness from the door interconnect wiring harness.

4.Remove eight #8-32 screws securing the upper door cover w/reflector (4) to the door.

5.Remove the upper door cover w/reflector (4), lamp (3), lamp holders (2) and door wiring har- ness as a assembly.

6.Rotate lamp (3) 90° and remove from lamp hold- ers (2).

7.Remove the #6-32 securing the lamp holder (2) to be removed, remove lamp holder (2) and discard.

8.Install new lamp holder (2) and secure with a #6- 32 screw.

9.Install lamp (3) into lamp holders (2) and turn 90° until the pins snap in place.

10.Install upper door cover w/reflector (4), lamp (3), lamp holders (2) and door wiring harness as a assembly using eight #8-32 screws.

11.Reconnect the plug on the door wiring harness to the connector on the door interconnect wiring harness.

12.Install the door bottom cover (5) using six #8-32 screws.

LAMP REPLACEMENT (Refer to Fig. 16)

1.Open the dispenser door (1).

2.Remove the upper door cover w/reflector (4), lamp (3), lamp holders (2) as an assembly.

3.Rotate lamp (3) 90° and remove from the lamp holders (2).

4.Insert new lamp (3) into lamp holders (2) and turn 90° until the pins snap in place.

5.Reinstall upper door cover w/reflector (4), new lamp (3) and lamp holders (2) on the door assy (1).

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27591 031597

 

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Contents BUNNHC-2 Serial # HC00025000 UPWarranty IntroductionUser Notices 12368.000227620.0000 Initial SET-UP Electrical RequirementsElectrical HOOK-UP Plumbing RequirementsCleaning AdjustmentsDispenser USE Cold Beverage SET-UP OptionalTroubleshooting Draining the HOT Water TankHopper Dispense Rate of Product 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-2Test Procedure BallastLocation 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- nalsLamp Replacement Refer to Fig Lamp HolderDoor Assy 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 Valves Dispense Disconnect the water line from the solenoid valveSolenoid Valve Inlet Solenoid Valve Inlet Tank HeaterRefer to when reconnecting the wires to the tank heater Tank Heater SwitchTank Heater 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.
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