Grindmaster 3341A, 3352, 3342 manual Product Tips, Carburetor Assembly

Remote Freezers (cont.)

The autofill system on the 3341A and 3352 models is designed to keep the product hopper full to a predetermined level. This assembly eliminates the necessity of pre-mixing concentrate and water and the possibility of manual mixing errors. The mixed product is automatically fed to a Remote Fill Control which is located in the freezer. The Remote Fill Control then adds pre-mixed product to the freezer mix storage reservoir as required.

When the autofill switch is ON and when the level drops below the probe for 15 seconds, the product feed solenoid opens. This allows the product from the remote pumping system to fill the hopper. When the liquid level reaches the probe, the product feed solenoid closes. NOTE: As a safety, the refrigeration liquid feed valve closes until the level in the freezer reaches the probe. To bypass the automatic feed feature, simply turn the autofill switch to manual. This allows the refrigeration to operate independently of the autofill and the hopper must be filled manually.

Product Tips

These freezers were designed to dispense a wide variety of frozen beverages including frozen fruit juice, frozen lemonade, slush and frozen cocktails. These products can be served in consistencies ranging from thin to fairly thick.

Two types of dispensing valve plungers and product consistency springs are available depending on the thickness of the product being served. These parts are interchangeable depending upon your needs. One plunger, part W0480438 has one horizontal outlet slot and is used to serve thin to medium products such as frozen lemonade and slush. The other plunger, part W0480451 has two horizontal outlet slots and is used to serve thicker product such as neutral base frozen cocktails. A red spring, part W0631239, is used on the drive motor to adjust product consistency to serve thin to medium products. The yellow spring, part W0631238, is used for thicker product. The spring is located next to the drive motor behind the right hand side panel.

Over an extended period of time, some products, such as frozen cocktails that contain alcohol, have a tendency to separate, or stratify. Separation of product on the mix storage hopper can result in frozen product quality inconsistency. Simply keeping the product, in the mix storage hopper, stirred on a regular basis will eliminate this problem.

Some cappuccino or latte 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 freezing 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 hopper 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
products, 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-
			(W0472060)
itable. At this ratio, one gallon of liquid mix will yield a

volume of one and one-half gallons of frozen product. Figure A

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.

Crathco® Remote Beverage Freezers Page 3