Water System Errors

There are three system errors that can be detected by the microprocessor. These errors are:

1.Water Fill Error (Er1) – the water full detection has failed, and the fill valve has been on for at least 5 minutes.

2.Thermistor Error (Er2) – the Thermistor is detected either open, shorted OR the water is boiling.

3.Heater Error (Er3) – the heater has been on for 3 minutes, but no rise in water temperature was detected.

If any of these errors are detected, the unit will shut off all water fill and heat related functions. Brewing is disabled, but grinding is still allowed. The display will show the error when the unit is idle. To clear any error, the user can hold in the UP key for 5 seconds, reset power to the unit or enter field test mode.

Timer Settings

A standard 64 oz. bottle Grind’n Brew

All Airpot Grind’n Brews

 

 

Setting

Approx.

Setting

Approx.

 

 

Single Bean

yield

Dual Bean

yield

 

 

 

 

 

 

Single/Left Full Pot

4.2 sec.

2 oz.

5.7 sec.

2 oz.

 

 

 

 

 

 

Right Full Pot

-

-

5.7 sec.

2 oz.

 

 

 

 

 

 

Single/Left Half Pot

2.4 sec.

1.25 oz.

3.0 sec.

1.25 oz.

 

 

 

 

 

 

Right Full Pot

-

-

3.0 sec.

1.25 oz.

 

 

 

 

 

 

Full Pot

112-125 sec.

62 fl oz.

112-125 sec.

62 fl oz.

 

 

 

 

 

 

Half Pot

56-63 sec.

31 fl oz.

56-63 sec.

31 fl oz.

 

 

 

 

 

 

 

 

Setting

Approx.

Setting

Approx.

 

 

Single Bean

yield

Dual Bean

yield

 

 

 

 

 

 

Single/Left Full Pot

4.5 sec.

2.3 oz.

6.2 sec.

2.3 oz.

 

 

 

 

 

 

Right Full Pot

-

-

6.2 sec.

2.3 oz.

 

 

 

 

 

 

Single/Left Half Pot

2.7 sec.

1.4 oz.

3.7 sec.

1.4 oz.

 

 

 

 

 

 

Right Full Pot

-

-

3.7 sec.

1.4 oz.

 

 

 

 

 

 

Full Pot

140-153 sec.

72 fl oz.

140-153 sec.

72 fl oz.

 

 

 

 

 

 

Half Pot

70-77 sec.

36 fl oz.

70-77 sec.

36 fl oz.

 

 

 

 

 

 

•Increase of 1 sec. to timer setting equates to an increase in fluid volume by 1/2 oz.

•Decrease of 1 sec. to timer setting equates to a decrease in fluid volume by 1/2 oz.

Setting the Grind (Refer to Figure C)

Tools Required: #2 Phillips screwdriver, 7/8" box wrench, large flat blade screwdriver

1.Remove front decal panel by removing screw on underside of panel and 2 screws on both sides of panel.

2.Loosen adjusting screw lock nut by turning counter clockwise.

3.Turn slotted adjusting screw clockwise to make the grind coarser or counter clockwise to make the grind finer.

Generally, a 1/8 to 1/4 turn will provide the desired adjustment.

4.After adjustment has been made, re-tighten the adjusting screw lock nut.

5.Visually inspect the grind adjustment with a small portion of coffee and readjust if necessary.

6. Reinstall the front decal panel.

Figure C

 

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Grind’n Brew® Coffee Systems

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Page 12
Image 12
Grindmaster 21H, 20H instruction manual Water System Errors, Timer Settings
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20H, 21H specifications

The Grindmaster 20H and 21H are robust, innovative espresso grinders designed to meet the demands of coffee shops and establishments that value precision and quality in their coffee production. These models stand out due to their advanced features, which cater to both high-volume usage and the desire for a consistent grind.

One of the main characteristics of the Grindmaster 20H and 21H is their powerful grinding mechanism. Equipped with high-quality ceramic burrs, these grinders provide an exceptionally uniform grind size, which is crucial for achieving the perfect extraction of coffee flavors. The ability to fine-tune the grind setting allows baristas to customize the grind for various espresso blends, ensuring that each shot is brewed to perfection.

Another significant feature of these models is their impressive grinding speed. With a grinding capacity that can handle a significant number of shots per minute, the Grindmaster 20H and 21H are ideal for busy coffee shops where efficiency is paramount. This capability helps reduce wait times during peak hours, enhancing customer satisfaction.

The design of the Grindmaster 20H and 21H is both ergonomic and user-friendly. The intuitive control panel allows baristas to easily adjust settings, making it straightforward to switch between different coffee blends. The grinders are also designed to minimize coffee retention, meaning less waste and fresher grounds for every cup.

Moreover, the Grindmaster 21H model includes additional smart technologies that enhance the grinding experience. Features like programmable dosing and digital displays offer even greater precision and ease of use. These technologies ensure that each dose of coffee is consistent, contributing to the overall quality of the espresso served.

In terms of build quality, both models boast a sturdy construction that ensures durability and longevity, making them a reliable investment for any coffee establishment. Their compact design allows for easy integration into various coffee setups without compromising on performance.

Overall, the Grindmaster 20H and 21H espresso grinders represent a perfect blend of innovation, efficiency, and reliability, making them essential tools for professional baristas and coffee enthusiasts alike. The advanced features and user-friendly design ensure that they can meet the high standards demanded by the modern coffee industry.
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