to both types of screen for products which are prone to'blind'the mesh during extended usage powders, which are fed into the lower bin and then drawn up to granules and The illustrated self-loading sieve is also suited to handlin gallery above the mesh of the self-loading sieve by vacuum. The air is separated from the material via an integral filter mounted in the lid of the sieve and taken away either by a venturi or electric vacuum pump. A timer control switches off the vacuum and sieved material drops into a suitable container sited below which, in the case of potato granules, could be end packaging sacks and liners. This type of arrangement may suit some lay-outs but is invariably regarded as more suitable for granules or powder than cut A useful range of sieves for dehydrated vegetables and fruits is as follo Round-hole screens: From 4mm to 9mm in increments of 0. 4mm -stainless steel Slotted screens: 19mm by 2.5mm and 25mm by 3mm- stainless steel Woven wire screens: 1.5mm, 1.2mm, 1mm, 0.85mm-stainless steel The above would cover the screening of most types of fruit and vegetables For Potato Granules and Powders the sieves range between 350 microns to 150 microns. A 250 micron screen is commonly used for the pack-off granules in the final sieving. Powder screens may be stainless steel nvlon The processor must select the size of screen most suitable for the product being graded, bearing in mind what outlets there are for the'through' material with any particular size of aperture ome off-cuts from 9.5mm dice, for example, are useful for soup formulations, where the particle shape may not be too critical. For a quality soup, however, the vegetable is usually cut to the appropriate size, initially in When screening 9.5mm carrot dice(in the dry state), with a 4.8mm sieve on the top of the e scree en, about 10 percent will pass through as off-cuts orSmall cut, and a rather smaller percentage when sieving potato. With a 6. 4mm sieve fitted, up to 20 percent will pass through. The decision on which to use, can only be made in the light of circumstances, taking into account the buyers specification for the appearance and size of the main product, and what outlet there may be for the smaller particle fraction In addition to these two fractions, using a twin deck screen, a 1.2mm screen can be used at the lower level to take out fines which can be milled for vegetable powder in a Turbo Millto both types of screen for products which are prone to ’blind’ the mesh during extended usage. The illustrated self-loading sieve is also suited to handling granules and powders, which are fed into the lower bin and then drawn up to the dust-tight gallery above the mesh of the self-loading sieve by vacuum. The air is separated from the material via an integral filter mounted in the lid of the sieve and taken away either by a venturi or electric vacuum pump. A timer control switches off the vacuum and sieved material drops into a suitable container sited below which, in the case of potato granules, could be end packaging sacks and liners. This type of arrangement may suit some lay-outs but is invariably regarded as more suitable for granules or powder than cut products. A useful range of sieves for dehydrated vegetables and fruits is as follows: Round-hole screens: From 4mm to 9mm in increments of 0.4mm - stainless steel. Slotted screens: 19mm by 2.5mm and 25mm by 3mm - stainless steel. Woven wire screens: 1.5mm, 1.2mm, lmm, 0.85mm - stainless steel. The above would cover the screening of most types of fruit and vegetables. For Potato Granules and Powders the sieves range between 350 microns to 150 microns. A 250 micron screen is commonly used for the pack-off granules in the final sieving. Powder screens may be stainless steel or occasionally nylon. The processor must select the size of screen most suitable for the product being graded, bearing in mind what outlets there are for the ’through’ material with any particular size of aperture. Some off-cuts from 9.5mm dice, for example, are useful for soup formulations, where the particle shape may not be too critical. For a quality soup, however, the vegetable is usually cut to the appropriate size, initially in the raw state. When screening 9.5mm carrot dice (in the dry state), with a 4.8mm sieve on the top of the screen, about 10 percent will pass through as off-cuts or ’Small cut’, and a rather smaller percentage when sieving potato. With a 6.4mm sieve fitted, up to 20 percent will pass through. The decision on which to use, can only be made in the light of circumstances, taking into account the buyers’ specification for the appearance and size of the main product, and what outlet there may be for the smaller particle fraction. In addition to these two fractions, using a twin deck screen, a 1.2mm screen can be used at the lower level to take out fines which can be milled for vegetable powder in a Turbo Mill. 226