Bunn HC-2 HC-3 service manual Schematic Wiring Diagram HCA-2, & HCA-3

Models: HC-2 HC-3

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SCHEMATIC WIRING DIAGRAM HCA-2, & HCA-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRN

 

 

 

 

L1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

ELECTROMECHANICAL THERMOSTAT CONFIGURATION

 

 

 

 

 

 

 

 

 

 

 

used!

 

HEATER SW.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK-16

BLU/BLK-16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

be

 

THERMOSTAT

 

 

 

 

LIMIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

 

 

 

MUST

 

BLK-16

TANK HEATER

 

 

 

 

WHI -16

 

BLU-16

 

 

BLK-16

 

BLK-16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Configuration

ELECTRONIC THERMOSTAT CONFIGURATION

 

 

 

 

 

 

 

 

 

 

 

 

 

HEATER SW.

TAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIMIT

 

 

 

 

 

 

 

 

 

 

BLK-16

 

 

 

 

 

 

THERMOSTAT

TANK HEATER

 

 

 

 

 

 

ELECTRONIC

 

 

BLK-16

BLK-16

 

BLK-16

 

 

 

 

WHI -16

One

 

 

 

 

 

 

 

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI

 

ASSEMBLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OVERFLOW SWITCH

 

 

 

 

BLK

 

 

 

 

 

 

 

 

BLK

 

 

RED

RED

 

TANK INLET

 

 

 

 

WHI/VIO

 

1 HOPPER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/BLU

 

 

 

 

 

 

 

 

1

VIO

 

SOL

WHI

 

 

 

 

 

 

2

DELAY

 

 

 

 

 

 

LIQUID

BLU

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

2

 

 

 

 

BLK

BLK

 

BLK

 

 

 

 

 

 

 

 

LEVEL

 

 

 

WHI

 

 

 

4

 

 

 

 

 

 

 

3

 

 

 

 

 

 

WHI/RED

 

 

 

 

 

 

 

BOARD

PNK-20

 

 

 

 

 

5

 

 

 

 

 

 

 

 

4

 

 

 

 

WHI/GRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

PROBE

 

 

 

 

WHI/GRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI

 

WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

BLK

 

BLK

 

BLK

XFRMR

 

BLK

 

BLK

 

 

 

 

 

RED

FLOURESCENT

 

WHI

 

 

RED

 

 

WHI

 

 

 

 

 

 

 

BLU

 

LAMP

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

BLU

 

BALLAST

WHI

WHI

 

 

 

 

 

 

 

 

 

WHI

Components

 

 

 

WHI

 

 

 

DISPENSE

 

WHI

WHIPPER

 

 

HOPPER

WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/RED

SOL

WHI

WHI/RED

 

M

WHI

WHI/RED

M

WHI/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RUN/RINSE SWITCH

 

HC1

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/GRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2)

 

 

 

 

 

 

WHI

 

WHI

 

 

 

 

 

 

 

 

WHI

 

 

 

 

 

 

RIGHT DISPENSE

RIGHT WHIPPER

 

 

RIGHT HOPPER

 

 

HC

 

 

 

 

WHI/VIO

SOL

WHI

WHI/VIO

 

M

WHI

WHI/VIO

M

WHI/BLK

 

ON

 

WHI/VIO

 

 

WHI/VIO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Components

 

 

 

 

 

CENTER DISPENSE

CENTER WHIPPER

 

 

CENTER HOPPER

 

ELIMINATED

 

 

 

 

 

 

 

 

 

 

 

 

WHI/BLU

SOL

WHI

WHI/BLU

 

M

WHI

WHI/BLU

M

WHI/BLK

 

WHI/BLU

 

WHI/BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEFT DISPENSE

LEFT WHIPPER

 

 

LEFT HOPPER

 

 

 

 

 

WHI/BRN

SOL

WHI

WHI/RED

 

M

WHI

WHI/RED

M

WHI/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HC2 & HC3

COMPONENTS

 

 

 

 

 

 

 

 

 

 

 

 

 

RUN/RINSE SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/GRN

 

 

 

 

 

 

 

 

COLD DRINK OPTION (LEFT ONLY)

 

 

 

WHI/GRN

 

WHI/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI

 

4

WHI

 

SOL

 

 

 

 

 

 

 

 

 

 

 

WHI/BRN

 

WHI/BRN

 

 

 

 

 

 

JUMPER PLUG MUST BE

 

 

 

 

 

 

 

 

RED

 

 

(CENTER

 

 

WHI/RED

 

WHI/RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USED WHEN COLD

 

 

 

WHI/RED

 

WHI/RED

 

 

 

 

 

RED

 

 

 

 

 

 

WHI/YEL

 

 

 

DRINK FEATURE NOT

 

 

 

 

 

1

 

 

 

 

 

RED

 

 

INSTALLED

 

 

 

 

 

 

 

HOT/COLD SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

4 1

4

BLU/BLK

 

 

 

4

BLU

 

 

WHI

 

 

 

 

 

 

 

 

 

BLU

 

 

 

 

 

BLU

 

 

BLK

 

 

 

 

 

 

 

 

 

ORA/BLK

 

 

 

 

RED

 

1

 

 

 

 

 

 

 

 

 

 

ORA

 

 

 

 

1

RED

 

 

 

 

 

 

 

 

DISPENSE

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED/WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

ASSY.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

BLK

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

DISPENSE SWITCH

 

 

 

 

 

 

 

WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

(RIGHT, MODELS HC-2 & HC-3)

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

RED/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

DISPENSE SWITCH

 

 

 

 

 

 

 

 

 

(CENTER, MODEL HC-3 ONLY)

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED/WHI

 

 

 

 

240 VOLTS A C

 

 

4

 

 

 

 

 

 

 

1

 

 

 

 

 

2 WIRE

 

DISPENSE SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

SINGLE PHASE,

 

(LEFT, MODELS HC-2 & HC-3)

 

BLK

 

 

 

 

50 HZ

 

(ALSO HC-1 SWITCH)

 

RED

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

38

27591 031597

 

Page 38
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Bunn HC-2 HC-3 service manual 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.