Operating - Field operation Field Operation The optimum working speed of the PHANTOM in reasonable conditions is 6-9 mph. (10-14 kph) This speed is normally achieved in second gear for 7.5 mph (12 kph). If conditions are good, you may be able to travel in third gear as long as the engine is not labouring. Try to keep between 2200 and 3400 rpm. Slow down and select a lower gear if necessary. High engine revs will result in higher engine temperatures and fuel consumption. The suspension of the PHANTOM gives it a relatively smooth ride compared with a tractor, however, it should still be driven with care and respect especially over rough ground. Should you get badly "bogged down" when working in wet conditions, ensure that mud has not been forced up into the crankshaft pulley / drive belt area. If it has, then thoroughly clean the area and check that the camshaft drive belt cover has not been damaged and that mud has not got inside the cover. Please seek advice immediately, from T.J. Frazier Ltd., if it has. Field planning. Try to plan your field before you start work. You will soon find out what the PHANTOM is capable of. If a field has any particularly wet areas or steep banks, plan the field so that your load is reduced before you reach them. If it has a very steep hill in it, it is advisable to reduce your working speed to 6 mph to do the whole field. 1st and 2nd gear can then be used. When spraying at relatively high speeds, it is very important that your working speed is maintained to avoid over or under dosing. For this reason it is important that two 12 metre bouts are sprayed around the headland before spraying the rest of the field. When spraying the rest of the field maintain your speed as you travel onto the headland and do not start to turn until the sprayer is switched off. After turning, straighten up, and try to get up to your target speed before switching back on. When spraying with a wide boom do not change direction suddenly particularly when in 4WS mode or severe under/over dosing will occur as well as passing high shock loads on to the spray boom. Use 2WS mode whilst spraying down the field and try to turn as smoothly as possible at the ends. Potatoes. When spraying potatoes with row crop wheels fitted it is most important that care is taken when turning. If a dummy headland is left between the field rows and the headland rows you may find it necessary to shunt when turning to avoid crossing over the headland rows. Go as slow as possible (bottom gear) if turning over the rows is unavoidable to ensure unnecessary strain on the machine is kept to a minimum. Sugar Beet. When spraying sugar beet you will find it best to look forwards and drive by the centre of the machine rather than trying to look down at the wheels. Fit a centre marker on the bonnet if necessary. For low-dose/high pressure spraying forward speed should not exceed 6 mph (10 kph). We recommend the use of a jet which will apply 7+-10 gals (75-110 l/ha) at 5 mph (8 kph) at 45-50 psi (3.25-3.5 bar). E.G. Lurmark 015-F110 (light brown). Choice of jets. We recommend the use of 110 degree fan nozzles for general high speed spraying. These will give better coverage than 80 degree jets with a more appropriate droplet size. Twin outlet or twin jet caps will give even better coverage. However, you should always check on your chemical container for recommendations regarding forward speed, pressure, spray quality and water rates before choosing which nozzles to use. < 21 >