Coffee Grind Profile, Grind Adjustment | Grindmaster 250RH-2, 250AB

Coffee Grind Profile

Before shipment, this grinder has been tested with coffee and has been accurately adjusted to deliver a standard autodrip grind.

The Grinding Burrs are made of an extremely hard and wear resistant alloy. From time to time, grind adjustments (see instructions below) may be necessary as the burrs wear. If the grind runs coarser than expected after normal adjustment and the grind time has increased, the burrs may have excess wear and should be replaced. The burrs are warranted for 3 years or 30,000 pounds of coffee. See your warranty for details. New burrs should always be installed as a pair, never one or the other, as they are accurately ground and lapped in pairs. Old burrs cannot be resharpened.

Grind Adjustment

For Models 115A, 250, 250A, 250RH-2, 250RH-3

Tools Required: Phillips and Large Blade Screwdrivers, Pliers

In order to adjust the grind follow these steps: (see Figure D)

1.Remove Upper Front Plate by removing the four screws in the corners.

2.Loosen Adjusting Screw Lock Nut by turning counter clockwise.

3.Turn slotted Adjusting Screw clockwise to make grind finer or counter-clockwise to make grind coarser. Generally a 1/8 to 1/4 turn will provide the desired adjustment.

Note: Use dial on grinder cap as reference. Do not turn more than one notch before testing new Grind Adjustment.

4.After adjustment has been made, tighten Adjusting Screw Lock Nut.

5.To visually inspect grind adjustment, test grind a small portion of coffee and re-adjust if necessary.

Adjusting Screw

Lock Nut

(86340)Adjusting Screw

(86341)

Grinder Cap (87131)

Figure D: Grind Adjustment

Note: Adjusting the grind may alter the portion of coffee dispensed. After grind adjustment, weigh portion and adjust, if necessary (see “How to Adjust the Portion”).

Current

It is absolutely essential that full voltage and amperage always be available as it takes full power to grind

coffee. NEVER connect to an overloaded line or a two or three way plug, otherwise serious damage to the motor may result.

Do not use an extension cord.

Protection

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

Circuit Breaker

This grinder is equipped with a circuit breaker to protect the motor from overloading. When the circuit breaker operates, the reset button will pop out approximately 1/4” which cuts off the power to the grinder. The reset button is located above the power cord on the back of the grinder. To reset the circuit breaker, push the reset button in. You will hear a click as it resets. If the grinder does not operate after resetting the circuit breaker, there may be an obstruction in the grinding mechanism that is stalling the motor. In this case, the Grinder Head should be cleaned out as described in the Shear Disc Replacement section of this manual.

Lubrication

All bearings have been oiled for life. No further oiling is necessary.

Page 5	115 & 250 Series Coffee Grinders

250A, 115AB, 250RH-3, 250RH-2, 250AB specifications

The Grindmaster coffee machines, specifically models 250AB, 250RH-2, 115AB, 250A, and 250RH-3, represent a blend of advanced technology and user-friendly design aimed at enhancing the coffee brewing experience. These machines are primarily used in commercial settings, where consistency and quality are paramount.

Starting with the Grindmaster 250AB, this model is designed for heavy-duty usage, integrating an automatic brewing feature that ensures optimal extraction of coffee flavors. The 250AB is equipped with a digital control panel that allows operators to customize brew times and temperatures. This model's stainless steel construction not only guarantees durability but also provides an aesthetically pleasing finish that complements any café or restaurant environment.

Moving on to the 250RH-2, this model features a dual-heating system that allows for simultaneous brewing and maintaining temperature, ideal for high-demand settings. It boasts precise electronic controls that make it easy to replicate recipes and achieve the desired taste consistently. With an adjustable drip tray, the 250RH-2 accommodates various cup sizes, making it versatile for different customer needs.

The Grindmaster 115AB, known for its compact design, is perfect for smaller establishments without compromising on capability. It offers a single brewer with a quick heating time, so coffee can be brewed rapidly to meet customer demand. Additionally, the 115AB includes an easy-to-read LED display for monitoring and adjustment.

The 250A model focuses on efficiency with its streamlined design that prioritizes user convenience. It includes a large capacity water reservoir that minimizes the need for frequent refills and facilitates continuous brewing. The self-cleaning feature enhances hygiene and reduces maintenance time, making it an excellent choice for busy coffee shops.

Lastly, the 250RH-3 adds further improvements with its enhanced brew basket technology, which optimizes coffee ground saturation for even better extraction. Like the previous models, it features digital controls and programmable options, allowing for precise adjustments tailored to specific coffee profiles.

Overall, the Grindmaster series, with its various models, offers solutions that cater to a range of business sizes and coffee preferences. Their focus on durability, user-friendliness, and technological advancement has established them as a reliable choice for professional coffee brewing.