SERVICE (cont.)

CONTROL BOARD - FMD-2 ONLY (CONT.)

7.Check the voltage across the red (+) terminal and the black (-) terminal of the auger motor with a voltmeter. Connect the dispenser to the power source. Press and hold the appropriate dispense switch. After a delay of about .6 seconds, the indication must be between +4.0 and +24.5 volts dc.

If the voltage is present as described, the hopper motor control circuitry is operating properly.

If the voltage is not present as described, replace the control circuit board.

Removal and Replacement:

1.Disconnect the three plugs on the main wiring harness from the connectors on the control board.

2.Remove the four #6-32 keps nuts securing the control board to the component bracket.

3.Remove control board and discard.

4.Install new control board on the component bracket using four #6-32 keps nuts.

5.Reconnect the three plugs on the main harness to the connectors on the control board.

J2

J3

 

 

J2

 

 

 

J3

 

 

J4

J1

 

 

J1

J4

 

 

P1640

FIG. 13 CONTROL BOARD CONNECTORS

DISPENSE SWITCH(S) - FMD-1 & FMD-2

 

 

 

 

CUP

 

 

 

N U

NTIL

 

 

 

BUTTORELEASE

 

 

 

HOLD THEN

 

 

 

 

and FULL,

 

 

 

PUSHIS

2/3

 

 

 

FULL

 

 

 

 

IS 2/3

 

 

 

 

CUP

 

 

 

 

WHEN

 

 

 

ASE

PLACE

 

 

 

RELE

 

 

 

 

HERE

 

 

 

 

CUP

 

 

 

 

 

 

FMD-1

 

 

 

 

CUP

 

 

 

UNTIL

 

 

 

BUTTONRELEASE

 

 

 

and FULL,

 

 

 

PUSHIS

2/3

 

 

 

FULL

 

 

 

 

IS 2/3

 

 

 

 

CUP

 

 

 

 

WHEN

 

 

 

RELEASE

PLACE

 

 

 

HERE

 

 

 

 

CUP

 

 

 

PLACE

 

 

 

 

HERE

 

 

 

 

CUP

 

 

 

 

 

 

 

FMD-2

 

FIG.14 DISPENSE SWITCH

P1614

 

Location:

 

 

 

 

The dispense switch(es) is (are) located on the lower outside of the dispenser door.

22

29112 101598

 

Page 22
Image 22
Bunn FMD-1 FMD-2 service manual Dispense Switch

FMD-1 FMD-2 specifications

The Bunn FMD-1 and FMD-2 models represent a significant advancement in the realm of coffee brewing equipment, catering to the demands of both commercial establishments and serious coffee enthusiasts. These machines are designed to efficiently brew high-quality coffee while minimizing operational complexity.

The Bunn FMD-1 is a single brewer, while the FMD-2 features dual brewing capabilities. This distinction allows the FMD-2 to meet higher coffee volume demands, making it an ideal choice for bustling cafes or restaurants where efficiency is paramount. Both models are engineered with a robust stainless steel construction, ensuring durability and longevity in high-traffic environments.

One standout feature of both models is the infusion technology. This proprietary system enhances the extraction process, allowing for optimal flavor development. The machines utilize a programmable brewing timeline, which provides users with a high level of control over the brewing variables such as time and temperature. This leads to a customizable brewing experience tailored to specific coffee blends or personal taste preferences.

Additionally, these brewers are equipped with an integrated hot water faucet, offering convenience for making tea, hot chocolate, or even instant soup. This multifunctionality improves workflow in busy kitchens, as it eliminates the need for separate hot water dispensers.

The FMD series is also designed with user-friendly interfaces. The digital display provides clear, intuitive information about the brewing process, including brew progress and maintenance alerts. This makes it easy for operators to monitor and manage the machine, ensuring consistency and quality in every cup.

Moreover, both models are designed for quick and efficient cleaning. The removable brewing components facilitate maintenance, which is crucial in a commercial setting where hygiene and equipment uptime are critical.

In terms of capacity, the FMD-1 brews up to 3.8 gallons per hour, while the FMD-2 can produce an impressive 7.5 gallons per hour, demonstrating their suitability for high-volume service.

Overall, the Bunn FMD-1 and FMD-2 models embody the perfect blend of technology, efficiency, and user-centric design, making them a valuable addition to any coffee service operation. Their ability to deliver consistent, high-quality coffee with ease is sure to enhance the customer experience and streamline operations simultaneously.