Carburetor Assembly, Mix Considerations General

Product Tips (cont.)

Some cappuccino or latté mixes contain dairy products which can spoil if not refrigerated. If the freezer is to be turned off at night these products must be removed from the freezer.

Contact your local health department regarding its regulations for proper mix handling and storage.

Carburetor Assembly

Your new freezer uses a metering device, known as a carburetor, to feed the proper ratio of mix and air into the freez- ing cylinder (and to prevent frozen product from rinsing out of the freezing cylinder).

The carburetor, or carb tube, is a tube with a hole, or series of holes, bored through the side. It is located in the hop- per and fits in the hole that leads to the freezing cylinder. Air flows into the freezing cylinder through the top of the

tube and mix flows in through a smaller hole in the side
of the carb tube. The size of the mix inlet hole can be
balanced with the viscosity (thickness) of the liquid mix
and product draw rate, in such a way that the proper
amount of mix is fed into the freezer cylinder to blend
with air at just the right ratio. Mix viscosity varies by mix
type, mix temperature and mix age. Different serving
rates also demand different feed rates. For many prod-
ucts, the proper mix to air ratio is generally accepted	Thick product carb tube	Standard carb tube	Low overrun
to be two parts mix to one part air. This proportion	Thick product carb tube	Standard carb tube	Low overrun
to be two parts mix to one part air. This proportion	(W0471136)	(W0471076)	carb tube
yields a finished product that is both tasty and prof-	(W0471136)	(W0471076)	carb tube
yields a finished product that is both tasty and prof-

	itable. At this ratio, one gallon of liquid mix will yield a	(W0472060)
		Figure A
	volume of one and one-half gallons of frozen product. This

additional volume is the overrun in the product. Crathco offers three versions of carb tubes (see Figure A). Depending on the product being served and overrun requirements there is a standard tube for most slush or cocktail products, a low overrun carb tube that allows all air trapped in the freezing cylinder to escape and a smoothie/shake carb tube.

This carb tube has an outer sleeve that can be rotated to line up with different hole sizes to provide various levels of overrun. Most applications only require the standard carb tube.

Mix Considerations - General

Freezing characteristics are affected by the amount of sweeteners and solids in the mix. The amount of sweeteners and solids is called BRIX. BRIX can be measured with an instrument called a refractometer. A BRIX reading of between 11 and 14 will provide optimum freezer operation. Mixes with this BRIX level will freeze down to a smooth, uniform consistency. Mixes with too high a BRIX level will take longer to freeze down and will yield a soft, wet frozen product. Mixes with too low a BRIX level will have larger ice crystals and will have a tendency to dispense slowly. Alcohol content also affects product freezing characteristics. High alcohol content may prevent the freezer from serving product at proper thickness.

Note: Always take BRIX measurement using mix that has been thoroughly blended, before it is frozen. Always allow frozen mix to thaw thoroughly before taking a reading.

For maximum output capacity, always pre-chill mix before adding it to the freezer. Pre-chilled mix gives the freezer a head start on the freezing process and will speed both initial freeze down and recovery time. It is normal for output capacity to decrease when warm mix is added, or when the freezer is operated in a warm area.

Freezer Specifications

	Standard 3311	CE 3311	Water-Cooled 3311

Dimensions	26-1/2”H x 13”W x 29”D	26-1/2”H x 13”W x 29”D	26-1/2”H x 13”W x 29”D
Dimensions	67 cm x 33 cm x 74 cm	67 cm x 33 cm x 74 cm	67 cm x 33 cm x 74 cm
(H x W x D)	67 cm x 33 cm x 74 cm	67 cm x 33 cm x 74 cm	67 cm x 33 cm x 74 cm
(H x W x D)	(includes header box)	(includes header box)	(includes header box)
	(includes header box)	(includes header box)	(includes header box)

Electrical	115V / 60Hz / 1 PH	220-240V / 50 Hz / 1 PH	115V / 60Hz / 1 PH
Electrical	Dedicated 15 Amp circuit	Dedicated 15 Amp circuit	Dedicated 15 Amp circuit
	Dedicated 15 Amp circuit	Dedicated 15 Amp circuit	Dedicated 15 Amp circuit

Circuit NEMA #	5-15R	Plugless cord (user must attach plug)	5-15R

Drive Motor	1/2 hp, Capacitor Start	1/2 hp, Capacitor Start	1/2 hp, Capacitor Start
Compressor	3/4 hp	3/4 hp	3/4 hp
Cooling	Air-cooled	Air-cooled	Water-cooled

Actual Weight	175 lbs (79.4 kg)	175 lbs (79.4 kg)	175 lbs (79.4 kg)
Mix Hopper Capacity	5 gallons (18.9 liters)	5 gallons (18.9 liters)	5 gallons (18.9 liters)
Freezing Cylinder Capacity	1-1/2 gallons (5.7 liters)	1-1/2 gallons (5.7 liters)	1-1/2 gallons (5.7 liters)
Refrigerant	See Serial Number Plate	See Serial Number Plate	See Serial Number Plate
Refrigerant Charge	See Serial Number Plate	See Serial Number Plate	See Serial Number Plate
High Side (operating	Approx. 275-350 psi	Approx. 275-350 psi	Approx. 275-350 psi
pressure /design pressure)	Approx. 275-350 psi	Approx. 275-350 psi	Approx. 275-350 psi
pressure /design pressure)

Low Side	35-40 psi	35-40 psi	35-40 psi

Model 3311	Page 3

3311 specifications

The Beverage-Air 3311 is a top-tier commercial refrigerator meticulously designed to meet the demanding needs of foodservice establishments. Known for its reliability and efficiency, this model is a favorite among restaurant owners, bars, and cafés. The primary focus of the Beverage-Air 3311 is to provide optimal storage conditions for beverages, including soft drinks, juice, and bottled water, ensuring they are kept at ideal temperatures for maximum freshness.

One of the standout features of the Beverage-Air 3311 is its spacious interior, which provides ample storage for a variety of beverages. Measuring 33 inches wide, this unit can accommodate multiple shelves, each adjustable to suit the specific height requirements of various bottles and containers. The unit typically comes with sturdy, epoxy-coated wire shelves that not only ensure uniform cooling but also provide resistance against spills and easy cleaning.

Equipped with a powerful refrigeration system, the Beverage-Air 3311 utilizes environmentally friendly refrigerants, aligning with modern standards for sustainability. The compressor is designed for efficiency, providing rapid cooling and maintaining consistent temperatures across the unit while minimizing energy consumption. This feature is particularly valuable for businesses aiming to reduce operating costs while maintaining high product quality.

The Beverage-Air 3311 also includes a self-closing door with magnetic gaskets, which helps maintain the internal temperature and prevents cold air loss, thereby enhancing energy efficiency. Additionally, the doors are equipped with locks to ensure the security of valuable beverages during off-hours.

For enhanced visibility, the Beverage-Air 3311 can feature a glass door option, allowing customers and staff to easily view the stored products without opening the door. This feature not only improves accessibility but also adds an aesthetic appeal to the display.

In terms of durability, the exterior of the Beverage-Air 3311 is crafted from high-quality stainless steel, providing resistance against rust and corrosion while ensuring an easy-to-clean surface. The interior is designed with seamless construction, which further reduces the chances of bacteria buildup and makes maintenance straightforward.

Overall, the Beverage-Air 3311 combines advanced technology with thoughtful design features, making it an ideal choice for those looking to enhance their beverage service. With its capacity, efficiency, and durability, this commercial refrigerator stands out as a reliable partner in the fast-paced environment of food and beverage service.