Figure 8
Crathco Beverage Freezers

Filling CO2 Lines

CAUTION: CO2 lines should be filled slowly to prevent the possibility of damaging components. Open tank shut off valve slowly until it is completely open.

NOTE: Open valve all the way to prevent leakage around the valve shaft.

Adjusting CO2 Regulators

NOTE: CO2 regulators are pre-set at the factory. Check for accuracy.

1)Adjust the CO2 regulator that drives the bag-in-box syrup pump and alcohol pump to 60 psi. Turning regulator adjustment clockwise raises the pressure. Tighten locknut at this setting. (Figure 7)

CAUTION: The use of excessive pressure (above 75 psi) will result in pump seizure.

2)Adjust the CO2 regulator, connected to the carbonator, to

90 psi. NOTE: Do not exceed 120 psig, the carbonator pressure relief setting. Turning regulator adjustment clockwise raises the pressure. Tighten locknut at this setting.

Figure 7

Activating Water Source Line Connection

Open the water line manual shut-off valve in the base cabinet of the 6321L and check for water leaks.

Sanitizing and Starting Unit

Sanitizing

1)Prepare a minimum of 2 gallons (7.6 liters) of sanitizing solution (Divorsol CX or equivalent).

NOTE: Add 5 ounces (150 ml) of Divorsol CX to 2 gallons (7.6 liters) of 120° Fahrenheit (50° Centigrade) water to achieve a concentration of 500 parts per million.

2)Disassemble the freezer following steps 1 through 8 in the Cleaning Section.

NOTE: For initial start-up, be sure to clean and sanitize the freezer before adding product.

3)After disassembly, thoroughly scour each part of the freezer in a warm mild detergent solution including the inside of the freezing cylinder. Dip or wipe each part in sanitizing solution and allow to air dry on clean paper toweling. DO NOT WASH COMPONENTS IN A DISHWASHER.

4)Rinse each part with clean water.

5)Reassemble components following the instructions in the Cleaning section of this manual.

6)Pour 1.5 quarts of sanitizing solution into both the front and back alcohol bottle rack.

7)Connect a red QCD cleaning fitting to one of the BIB connectors in the lower back cabinet and immerse the BIB connector into the remaining solution.

NOTE: If a QCD cleaning fitting is not available, cut the plastic outlet fitting out of an empty BIB container.

8)Sanitize system by opening all three of the manual shut-off valves in the back of the lower cabinet (syrup, alcohol and carbonated water).

9)Turn the freezer switch to "CLEAN".

10)Turn the control switch in the back of the base cabinet to "AUTO".

11)Allow the freeze cylinder to fill half way and run for 5 minutes.

12)Turn the freezer switch from "CLEAN" to "OFF".

13)Open the pressure relief valve located on the freezer dispensing valve to relieve all of the pressure in the freeze cylinder.

14)Remove the QCD cleaning fitting from the first BIB line and place

it on the other BIB connection. Place second line in remaining solution.

15) Pull or push transfer valve to opposite setting.(Figure 8)

16)Repeat steps 9-12.

17)Remove BIB connector from container of sanitizing solution.

18)Purge sanitizer from product lines and barrel.

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Grindmaster 6321L service manual Sanitizing and Starting Unit, Filling CO2 Lines Adjusting CO2 Regulators
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6321L specifications

The Grindmaster 6321L is an advanced commercial coffee grinder designed for coffee shops, cafes, and restaurants that demand efficiency, consistency, and superior quality in their coffee preparation process. Known for its robust design and innovative features, the Grindmaster 6321L stands out in the competitive coffee grinding market.

One of the main features of the Grindmaster 6321L is its precision grinding capability. The grinder utilizes 1.5-horsepower commercial-grade motors combined with stainless steel burrs, ensuring a consistent grind size for various coffee beans. This precision is crucial for brewing high-quality coffee, as it affects the extraction and ultimately the flavor profile.

Another significant characteristic of the 6321L is its user-friendly interface. The grinder is equipped with an intuitive digital display, allowing baristas to adjust settings with ease. Users can customize grind settings to achieve their desired coarseness or fineness, catering to different brewing methods such as espresso, drip, or French press. The presets enhance operational efficiency, reducing the time spent on adjusting grind sizes during busy service hours.

The Grindmaster 6321L also features a large-capacity hopper capable of holding a significant amount of coffee beans, minimizing the need for frequent refills. This characteristic is particularly advantageous in high-volume coffee environments, ensuring uninterrupted service. Additionally, the grinder is built with a sound-dampening design, reducing noise levels during operation—a thoughtful feature for establishments focused on customer experience.

Advanced technological aspects of the Grindmaster 6321L include its grind-on-demand system which ensures that coffee beans are only ground when needed. This feature preserves the freshness of the coffee, delivering an aromatic and flavorful brew every time. The grinder is also equipped with an automatic shut-off feature, enhancing energy efficiency and safety.

Durability is another key characteristic of the Grindmaster 6321L. Constructed with high-quality materials, it is designed to withstand the rigors of daily commercial use. With its solid construction and reliable performance, the 6321L is a perfect investment for any coffee business looking to elevate its coffee service.

In summary, the Grindmaster 6321L offers a blend of precision, customization, and durability. Its state-of-the-art features make it an indispensable tool for professionals in the coffee industry, ensuring that every cup served meets the highest standards of quality.
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