3 - Description44Centrifugal Blower Units (Turbines)General informationThe blower unit is located at the back of the machine. It contains a gearbox unit, blanking plate, casing, outlet hoses andnozzles, turbine and clutch. There are two different turbine models: the steel model assembled in P540 and P540Dcentrifugal blower units, and the aluminium model assembled in HF600 blower units.μ ATTENTION! The clutch is one of the most important parts in the blower unit in terms of safety. Make sure that it is inperfect conditions (i.e. that it is not blocked, etc.). Otherwise, it could cause the blower unit to explode.HF640D (TD3-P640 Double)The air kit should adapt to the requirements of the booms width and crop in order to give the best application results. Thefollowing section gives more details about the different pneumatic air kits available.The letters HF640D means High Flow and Double, respectively. They have a polyethylene casing and turbines of 640 mmdiameter.€ DANGER! UNDER NO CIRCUMSTANCES should you exceed 540 r.p.m. from the tractor PTO as there is a serious dangerof air kit explosion.€ DANGER! STAY CLEAR of the air inlet and outlet while the turbine is in use. Foreign objects could be expelled fromtheair outlet or parts of clothing could be sucked into the air inlet.± WARNING! The blower units are the most dangerous part of the machine. Do not attempt to alter any of itscomponents without checking with your nearest distributor first. Manipulating blower units to change theircharacteristics should only be carried out by qualified personnel that has been expressly authorised by ILEMOHARDIComponentsD. Steel turbine D. Steel turbineB. Polyethylene crankcase E. GearboxC. Clutch F. ChassisA BC D E F