SERVICE (Cont.)

Potentiometer (Model FPG)

SMALL

MEDIUM

LARGE

 

 

P2946

FIG 34 POTENTIOMETERS

Location:

The potentiometer switches are located on the top rear of the hopper housing.

Test Procedure:

1.Disconnect the grinder from the power source.

2.Open hopper lid and loosen four screws inside the hopper and remove hopper.

3.Disconnect the BRN wire from the control board.

4.Disconnect the PNK, GRY, and TAN wires from the front selector switch.

5.Connect an ohmmeter to the BRN wire. Connect the other lead from the meter to the TAN wire. Turn the knob for the SMALL potentiometer all the way counterclockwise. The meter should read <3K ohm. Turn the knob all the way clockwise, the meter should read between 94K and 116K ohms.

6.Connect an ohmmeter to the GRY wire. Connect the other lead from the meter to the TAN wire. Turn the knob for the MEDIUM potentiometer all the way counterclockwise. The meter should read <3K ohm. Turn the knob all the way clockwise, the meter should read between 94K and 116K ohms.

7.Connect an ohmmeter to the TAN wire. Connect the other lead from the meter to the TAN wire. Turn the knob for the LARGE potentiometer all the way counterclockwise. The meter should read between 13.5K and 19.5K ohms. Turn the knob all the way clockwise, the meter should read between 108K and 132K ohms.

If continuity is present at all positions, the potentiometer switches are operating properly.

If continuity is not present at any position, replace the potentiometer switches.

8. Refer to Fig 35 when reconnecting wires.

Removal and Replacement:

1.Disconnect the grinder from the power source.

2.Remove the four 8-32 screws attaching the rear access panel and move aside.

3.Disconnect three wires to the batch selector switch and the one wire to the timer.

4.Loosen the setscrews on the switch knobs and remove the knobs.

5.Remove the three nuts and lockwashers attaching the switches to the rear access panel.

6.Inspect and replace the adhesive backed sponge washers on the rear access panel if necessary.

7.Install the new potentiometer switches and tighten the lockwashers and nuts.

8.Replace the knobs and tighten the setscrews. 9.Refer to Fig. 35 when reconnecting wires.

BRN to BRN WIRE at TIMER

PNK to BATCH SELECTOR SWITCH

GRY to BATCH SELECTOR SWITCH

TAN to BATCH SELECTOR SWITCH

FIG 35 POTENTIOMETER TERMINALS

37

41545 122209

 

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Bunn LPG-2, G9WD, G9-2T DBC, G1, FPG-2 service manual Potentiometer Model FPG, Potentiometer Terminals
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FPG-2, G1, FPG, G9-2T DBC, G9-2 specifications

Bunn has established itself as a leader in the coffee and beverage equipment industry, providing advanced solutions that cater to a variety of needs. Among its notable products are the Bunn LPG-2, G9, FPG-2, G9-2, and G9WD, which showcase the company’s commitment to innovation, quality, and efficiency.

The Bunn LPG-2 is an ideal solution for high-volume coffee production. This model features a two-watt heating element that ensures rapid brew cycles and consistent temperature control. With a sleek design and user-friendly interface, the LPG-2 simplifies the brewing process while delivering exceptional coffee quality. Its large capacity enables institutions to serve multiple customers simultaneously, making it suitable for restaurants, cafes, and hotels.

The G9 series, particularly the G9 and G9-2, are known for their versatility and robust performance. Both models come equipped with a stainless steel hot water faucet, allowing users to draw hot water for various applications such as tea or soup preparation. The G9 model is designed for single-brew operation, while the G9-2 accommodates dual brewing, making it an efficient choice for those needing to meet demand quickly. Additionally, both G9 models have advanced brewing technology to ensure optimal flavor extraction.

The FPG-2 model stands out for its precision and control over brewing parameters. It features a touchscreen interface that allows users to customize brew strength and temperature, ensuring that each cup meets individual preferences. The FPG-2 is also remarkably user-friendly, which is essential in a busy environment. Its dual-brew functionality allows it to serve two different coffee options simultaneously, enhancing service efficiency.

The G9WD is designed for those who require the ultimate convenience. Featuring a built-in water line connection, the G9WD minimizes the need for manual refilling, ensuring a continuous supply of fresh coffee. This model is equipped with a programmable timer, allowing users to set brew cycles in advance, which can be a significant time-saver during peak hours.

In summary, the Bunn LPG-2, G9, FPG-2, G9-2, and G9WD offer a range of features that cater to various coffee brewing needs. With advanced technologies, efficient designs, and user-centric interfaces, these models are engineered to deliver consistent, high-quality beverages, making them essential tools for any coffee-focused establishment. Whether for high-volume brewing or versatile beverage options, Bunn's offerings stand out in the competitive landscape of beverage equipment.
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