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 |
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of the carb tube. The size of the mix inlet hole can be |
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balanced with the viscosity (thickness) of the liquid mix |
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and product draw rate, in such a way that the proper |
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amount of mix is fed into the freezer cylinder to blend |
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with air at just the right ratio. Mix viscosity varies by mix |
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type, mix temperature and mix age. Different serving |
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rates also demand different feed rates. For many prod- |
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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 | ||||
(W0471136) | (W0471076) | carb tube | ||
yields a finished product that is both tasty and prof- | ||||
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itable. At this ratio, one gallon of liquid mix will yield a | (W0472060) | |
Figure A | ||
volume of one and | ||
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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
Freezer Specifications
| Standard 3312 | CE 3312 | |
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Dimensions | |||
68 cm x 47 cm x 74 cm | 68 cm x 47 cm x 74 cm | ||
(H x W x D) | |||
(includes header box) | (includes header box) | ||
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Electrical | 115V / 60Hz / 1 PH | ||
Dedicated 20 Amp circuit | Dedicated 15 Amp circuit | ||
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Circuit NEMA # | Plugless cord (user must attach plug) | ||
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Drive Motor | 1/2 hp, Capacitor Start | 1/4 hp, Capacitor Start | |
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Compressor | 3/4 hp | 3/4 hp | |
Cooling | |||
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Actual Weight | 245 lbs (111 kg) | 245 lbs (111 kg) | |
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Mix Hopper Capacity | 3 gallons (11.4 liters) | 3 gallons (11.4 liters) | |
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Freezing Cylinder Capacity | (2) | (2) | |
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Refrigerant | See Serial Number Plate | See Serial Number Plate | |
Refrigerant Charge | See Serial Number Plate | See Serial Number Plate | |
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High Side (operating | Approx. | Approx. | |
pressure /design pressure) | |||
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Low Side | |||
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Model 3312 | Page 3 |
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