Service and Maintenance

Quarterly Preventative Maintenance

Quarterly Preventative Maintenance is recommended to extend the life of the machine. Preventative Maintenance visits include sanitizing the entire system, checking for and replacing any worn parts, optimizing operating conditions. See the parts replacement schedule at the end of this section.

Sanitizing Entire Liquid Systems

It is essential that the entire liquid system be sanitized every 3 months by a qualified technician. Follow the above instructions.

NOTE: Clean and sanitize the entire liquid system before and after storage.

Routine Product System Sanitizing

Note: During sanitizing, all "O" Rings and seals should be inspected for damage

1)Drain product from freezing cylinder barrel

a)Turn freezer switch to "CLEAN".

b)Close manual syrup feed valve in back lower compartment of the cabinet.

c)Close manual alcohol feed valve in back lower compartment of the cabinet.

d)Place container under product dispensing valve, open dispensing valve handle.

e)Continue to remove product until it starts to become semi-clear and has a liquid consistency.

f)Close manual carbonated water feed valve in back lower compartment of the cabinet.

g)Drain remaining product. If liquid flow stops before the freezing cylinder is empty pull vent (round ring) in valve block and break vacuum.

2)Remove product from BIB supply lines

a)With freezer in "CLEAN" mode, disconnect BIB connectors.

b)Open manual syrup valve in back lower compartment of the cabinet.

c)Place a container under test line and open test port manual valve.

d)Turn the control switch in lower cabinet to "TEST".

e)Turn test switch to "ON".

f)Allow pump to operate until it stops.

g)Move BIB connector to other BIB container and repeat steps (e) and (f) above.

h)Install a cleaning connector to BIB connector that is indicated as active by the switch on the BIB vacuum transfer valve.

i)Put line with connector into a container of clean water.

j)Repeatedly cycle the "TEST" switch to "OFF" then to "ON" until the line is clear of syrup.

k)Repeat process for alternate BIB hose starting at (g) above.

l)When the syrup lines are clean close the manual syrup line valve.

3)Remove product from Alcohol supply lines

a)With freezer in "CLEAN" remove the alcohol bottles from storage rack.

b)Open the manual alcohol valve in the back lower compartment of the cabinet.

c)Place a container under test line and open manual test port valve.

d)Move control switch in lower cabinet to "TEST". Turn test switch to "ON".

e)Allow pump to operate until it stops or all alcohol is removed.

f)Pour clean water into the alcohol rack reservoir .

g)Cycle the test switch from "OFF" to "ON" until the line is clear of alcohol.

h)When lines are clean close the manual valve on alcohol line.

Complete the sanitizing procedure by following the steps in the Sanitizing & Starting Unit Section.

Servicing Dispensing Valves, O-Rings, and Freeze Cylinder Drive Shaft/Seal Assemblies

NOTE: Dispensing valve "O" Rings should be replaced every 120 days to correspond with quarterly preventative maintenance visits.

The best technique for removing an "O" Ring is to first wipe off all of the lubricant using a clean paper towel. Pinch the "O" Ring upward with a dry towel between your finger and thumb. When a loop is formed in the "O" Ring, roll it out of the groove with your thumb. Always remove the "O" Ring farthest from the end of the plunger first. (See

Figure 13)

Crathco Beverage Freezers	Page 13

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.