CLEANING

WARNING - Unplug the grinder before the removal of any panel or grind chamber-housing parts.

1.Clean all exterior surfaces using a damp cloth rinsed in any mild, nonabrasive, liquid detergent. Care should be taken not to scratch the grinder with any abrasive material.

2.Empty all beans from hopper(s). Plug in the grinder, place an empty bag behind the dispense chute or trifecta brew cup. Press and release the “START” switch. Run a few cycles until all coffee in the grind chamber is

dispensed and disconnect the grinder from the power source. Remove the bag or brew cup. WARNING - Prior to cleaning the grind chamber, unplug the grinder.

3.Remove the two screws and remove the dial plate and selector knob assembly.

4.Slide the burr auger rotor/spring assembly off the motor shaft and disassemble for cleaning.

5.Remove the two screws securing the stationary burr to the grind chamber.

6.Remove the four screws at the top of the chute and remove the chute. Using a pair of pliers, remove the C- clips securing the flapper arm to the chute. Remove the flapper securing pins carefully (noting the location of each flapper spring).

7.Wash all parts in a mild solution of detergent with hot water and a stiff non-metallic bristle brush. Rinse all parts thoroughly and allow them to air dry before reinstalling.

8.Carefully clean the grind chamber, dial plate assembly, chute opening and dial plate opening with a dry stiff non-metallic bristle brush. Wipe with a clean cloth that has been soaking in a mild solution of detergent and hot water. Reinstall the spring and rotor with burr onto the motor shaft.

9.Align the slot in the motor shaft with the rotor and reinstall shear plate. Reinstall rotor cup and grind selector dial plate to the burr housing. Refer to the “Adjustment” section of the Operating and Service manual for burr adjustments.

PREVENTIVE MAINTENANCE

Bunn-O-Matic®Corporation recommends that preventive maintenance be performed at regular intervals. Maintenance should be performed by a qualified service technician. For Technical Service, contact Bunn-O-Matic®Corporation at 1-800-286-6070.

NOTE: Replacement parts or service caused by failure to perform required maintenance is not covered by warranty.

6-Month

Weekly Cleaning plus replace the dechaffer assembly.

1-Year

1.On grinders with slide plates check the slide plates and clean.

2.Inspect and clean/replace burrs and grind chamber if necessary.

3.Adjust the burrs and grind time to your specifications for particulate size and throw weight.

BASE RELOCATION

1.Disconnect the grinder from the power source.

2.Tip the machine gently, on its back, so it rests with approximately one inch of the bottom overhanging the work surface.

3.Remove the drawer from the base assembly.

4.Place the base against the grinder bottom and align the four sets of holes.

5.Securely fasten the base to the grinder bottom using the four screws and washers provided.

6.Raise the grinder to the upright position.

7.Insert the drawer into the base assembly.

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Bunn G2, G3 service manual Cleaning, Preventive Maintenance, Base Relocation, Month, Year
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G2, G3 specifications

The Bunn G3 and G2 models are two of the leading commercial coffee grinders popular among coffee enthusiasts and establishments alike. Both are engineered to provide optimal performance, ensuring that each cup of coffee brewed consistently meets high standards of taste and quality.

The Bunn G3 model is designed to deliver high-speed grinding while maintaining a uniform grind size, thanks to its specialized precision grinding technology. With the ability to grind coffee beans quickly, the G3 can produce up to 3.5 pounds of coffee per hour, making it suitable for high-volume operations. The grinder features a large hopper that holds up to 1.5 pounds of coffee beans, allowing for extended usage without the need for frequent refilling.

One of the standout characteristics of the G3 is its simplicity of use. It comes equipped with a user-friendly interface, making it easy for operators to adjust grind settings according to their brewing methods, whether it be for drip coffee, espresso, or other brewing styles. The grinder also benefits from a low-mess design which helps to minimize coffee grounds spillage during operation.

On the other hand, the Bunn G2 is another exceptional grinder that slightly precedes the G3 in the product line. The G2 also emphasizes efficiency and speed, offering similar grinding capabilities, but features a slightly lower output of up to 2.5 pounds of coffee per hour. Its compact design is ideal for establishments with limited counter space while still delivering excellent performance and consistency.

Both the G2 and G3 incorporate Bunn’s patented Smart Speed technology, which optimizes the grinding speed based on the grind size selected. This ensures that coffee beans are ground uniformly, enhancing extraction and flavor in the final brewed product.

Both grinders are built with durability in mind. Their robust construction and high-quality materials guarantee longevity, even in hectic commercial environments. Additionally, their design allows for easy cleaning and maintenance, which is crucial for maintaining optimal performance over time.

In summary, the Bunn G3 and G2 grinders stand out in the realm of coffee preparation for their impressive features, consistent performance, user-friendly design, and robust construction. These two models cater to both high-volume coffee needs and more compact operational spaces, making them indispensable tools for coffee shops, restaurants, and dedicated coffee aficionados.
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