Protection

The grinder is equipped with both a circuit breaker and a shear disc release to protect the motor and burrs if a foreign object, such as a nail or rock, gets into the the coffee.

Grind Adjustment

Tools required: Large blade and medium Phillips head screwdrivers

In order to adjust the grind, follow these steps (Refer to figure A):

1.Remove all coffee from the hopper.

2.Set selector knob to the finest setting (Espresso or Turkish) depending on the model.

3.Loosen both knob retainer screws in selector knob one turn only.

4.While pressing the bag switch, located behind the spout, press the START button so that the grinder will run during adjustment.

810 model - Press the ON or START button so that the grinder will run during adjustment.

5.With the grinder still running, turn the adjusting screw in the center of the selector Figure A

knob slowly to the right until a slight clicking noise is heard. Immediately turn the adjusting screw to the left one grind setting. This is the finest grind obtainable.

6.Tighten both of the knob retainer screws. Once the ESPRESSO grind has been set (Turkish for Model 835, 875, 890), the other grind settings will automatically set correctly.

7.Press the STOP or OFF button.

IMPORTANT: Always be sure the grinding burrs are not touching while the machine is running on the ESPRESSO/TURKISH setting. Otherwise serious damage to the motor may result.

Shear Disc Replacement

If the motor should run and no coffee is dispensed, the shear disc release may have operated. Should this occur, perform the following operations in the sequence given (Refer to Figure B on page 4).

Note: See appropriate Exploded View for part numbers.

Tools Required: Flat Blade Screwdriver and Pliers

1.Unplug machine.

2.Remove all of the coffee beans from the hopper.

3.Remove the Grind Cap by taking out the 2 Cap Screws.

4.Pull out the Revolving Burr and Feedworm Assembly. Clean out the Grind Head, removing all coffee particles from inside the Grind Head and the Grind Cap so that it can be reset properly.

5.Check that no obstruction has been caught on the surface of the teeth of either burr. Remove the Shear Cap and broken pieces of the Shear Disc. You are now ready to reassemble the grinder mechanism.

6.Slide the Revolving Burr and Feedworm Assembly onto the Drive Shaft. Insert the shear drive so that the Motor Shaft tongue engages into the shear drive notch.

7.Insert a new Shear Disc by aligning the slot in the Shear Drive with the slot in the hub of the feedworm.

8.Replace the Shear Cap and Grind Cap. Make certain that the Grind Cap is screwed on tight and is seated properly, not cocked, against the head. Without a proper seat, a proper grind cannot be obtained.

9.Your grinder is now ready to grind.

Grindmaster Corporation 800 Series Coffee Grinders

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Grindmaster 875, 835, 890, 810 instruction manual Protection, Grind Adjustment, Shear Disc Replacement
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875, 810, 890, 835 specifications

Grindmaster is a renowned name in the coffee and beverage equipment industry, and the models 810, 835, 890, and 875 are prime examples of their commitment to quality and innovation. Each of these machines is designed to cater to different needs while showcasing Grindmaster’s hallmark features, advanced technologies, and user-friendly characteristics.

The Grindmaster 810 is a versatile automatic grinder that meets the demands of small to medium-sized coffee shops. Featuring a durable design and high-capacity bean hopper, it maintains freshness while grinding. Its straightforward interface allows for easy operation, and the grind consistency is remarkable, ensuring a superior extraction for various brewing methods. Advanced burr grinding technology minimizes static, ensuring that grounds fall neatly into the portafilter.

Moving to the Grindmaster 835, this model builds on the 810’s strengths by introducing programmable settings for grind size and timing, allowing users to customize their grinding experience. The 835 is equipped with precision-engineered steel burrs, ensuring consistency and durability. It also features an intuitive display for user guidance and ease of use, making it a fantastic choice for cafes looking to enhance their offerings.

Next, the Grindmaster 890 is a standout in commercial environments. It boasts a sleek design and integrates advanced features like digital controls for precise grind adjustments. The model is built with heavy-duty components to ensure longevity, making it ideal for high-traffic settings. The 890 also includes a built-in cleaning feature that promotes maintenance efficiency, making it easier for staff to keep the grinder in optimal condition.

Finally, the Grindmaster 875 wraps the series with its innovative approach to grinding. This model supports dual grinding systems, catering to both espresso and batch brewing requirements. The 875 is equipped with advanced noise reduction technology, creating a quieter environment during operation. Additionally, customizable presets allow baristas to adapt the grind to specific beans, ensuring the best flavor extraction.

In conclusion, the Grindmaster 810, 835, 890, and 875 demonstrate a blend of functionality, durability, and advanced technology that meet diverse coffee preparation needs. These machines reflect Grindmaster's commitment to quality, making them invaluable assets in any professional coffee setting. Whether for small cafes or bustling espresso bars, these models offer precision, efficiency, and versatility, enhancing the overall beverage experience for operators and customers alike.
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