Unigreen Mistblowers AP APC Use And Maintenance Manual
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unigreen 19To prevent the excessive heating of the oil we recommend supplying thedistributor of the sprayer only when the cylinders are being used.We recommend having qualified personnel do any adjustments.Pay attention to the integrity and efficiency of the hydraulic components andin particular to the pipes to prevent the risk of bursting.Do a full check on the pipes and components at least once a year, werecommend replacing hydraulic pipes every 3-4 years.6 SPRAYING6.1 DESCRIPTION OF TYPE OF JETSVarious types of jets are fitted; with a single or double head.Generally they have a non-drip diaphragm and are made out of brass, suitablefor pressures up to 40 bar, some models are nickel plated.The jets can be equipped with different types of nozzles, changing the lockingringnuts. The jets used normally have high volume, Ø18, ceramic plates andlow volume conical nozzles (Albuz ATR or Teejet TXB). The jets for cannonshave a jet holder with adjustable delivery and spray that has high volume,ceramic plates, Ø15 instead of 18.All the jets normally used have three positions (FIG. 26):a) spray - if the nozzle is pointing outwards, away from the blower group,parallel with the non-drip valveb) closed - if the nozzle is at 90° with respect to the non-drip valve or, for thesingle jet if it is facing inwards towards the blower groupc) nozzle second spray - when these are pointing towards the outside of theblower group parallel with the non-drip valve.6.2 DESCRIPTION OF TYPE OF NOZZLESThe nozzles are extremely important to obtain a correct distribution on thevegetation to be treated. Poor quality or worn nozzles have a tendency tocreate unevenly treated strips.The nozzles are produced in various sizes, to work with a precise pressurerange, to create certain types of larger or smaller drops; using nozzles for apurpose they are not envisaged for prejudices the precision and duration of thenozzles.6.2.1 NORMAL VOLUME CONICAL NOZZLES (OVER 500L/HA)Generally made of ceramics, these nozzles consist of various parts; the actualnozzle, the stainless steel slinger and a series of seals. They are particularlyresistant to wear and are designed to work also at high-pressure (25-45 bar)producing drops of an average size with strong turbulence. This turbulencemakes them suitable for penetrating luxuriant vegetation and so they aresuitable for fungicides and insecticides. There are various sizes and thecapacities are indicated in table N° 1, page 33.6.2.2 LOW VOLUME CONICAL NOZZLES (150-500L/HA)Made of two ceramic pieces with colour-coded plastic inserts, they areavailable in various sizes identified by the colour (see tables 2 and 3 page33).They have been specifically designed to obtain a large number of small dropswith strong turbulence even at low pressures (2-3 bar). This turbulence makesthem suitable for penetrating luxuriant vegetation and so they are suitable forfungicides and insecticides. The nozzles of the TR Lechler and TXA Teejetseries are in this category.6.2.3 ANTI-DRIFT NOZZLESSpecific anti-drift nozzles are available from Unigreen. The main characteristicof these nozzles is that they eliminate the fog effect caused by the presenceof drops that are too small and are particularly sensitive to drifting. For furtherinformation please contact Unigreen for the relevant instruction handbook.FIG. 26 |
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