Micron Technology Turbofan manuale d’uso

TURBOF AN Instruction manual and inst allation guide Micron S prayers Limited Bromyard Industrial Estate Bromyard, Herefordshire HR7 4HS, UK T el: +44 (0) 1885 482397 Fax:+44 (0) 1885 483043 E-mail: micron@micron.co.uk URL: http://www .micron.co.uk[...]

DRAFT 1 1.0 INTRODUCTION 2 2.0 SPEC IFICA TION 3 3.0 TEN KEY POINTS FOR USERS 4 4.0 INST ALLA TION 5 4.1 Mounting of Sprayheads 5 4.2 Hydraulic System 7 4.3 Spray liquid 15 4.4 Testing 17 5.0 OPERA TION 17 5.1 Daily Inspection 17 5.2 Calibration Procedure 17 5.3 Position of Sprayheads 17 5.4 Sequence of Operation 18 5.5 After Use 18 6.0 HEAL TH AND[...]

DRAFT 2 1.0 INTRODUCTION The Micron TURBOFAN Sprayhead has been developed from over 30 years experience in the design and use of rotary atomisers. Originally developed f or agricultural aircraft, these atomisers are now used for aerial a nd ground applications in more than 75 coun- tries. This unique background, combined with continuous research an[...]

DRAFT 3 2.0 SPECIFICA TION Length (max. front to back): 35 cm (complete with mounting bracket) Diameter: 45 cm Weight: 6.4 Kg plus mounting bracket 1.7 Kg Liquid flow rate: 0.25 – 2.0 l/min Spray droplet size: 100 – 120 microns VMD Hydraulic oil flow: 8 l/min per sprayhead. Hydraulic pressure: 124 Bar pressure drop across each motor (approx.) F[...]

DRAFT 4 3.0 TEN KEY POINTS FOR USERS The following list of ten points is intended to assist users in the efficient use of Turbofan sprayheads. It is hoped that this section will encourage users to read the entire handbook and follow its recommendations. 1. Check that all atomisers rotate freely. The only friction should be drag from the hy- draulic[...]

DRAFT 5 4.0 INST ALLA TION The design of a sprayer incorporating Turbof an Sprayheads will va ry according to the crop to be sprayed, the type of sprayer being used and the available hydraulic power. This section gives general advice and design da ta but is not intended to provide specific instructions for buildin g ever y type of sprayer. Origin a[...]

DRAFT 6 4.1.1 Distance from Crop Each sprayhead must be positioned sufficien tly f ar from the crop to allow the airflow from the fan to disperse the spray droplet s over a wide band and to prevent local over- application of fo liage close to the atomiser. However, the d i stance s hould not be so great that the airflow becomes dissipa ted or that [...]

DRAFT 7 IMPORTANT: Sprayheads must never be posi tioned so that spra y droplets can be blown towards the driver or opera tor of the sprayer. Ensure that all spray is blown clear of the sprayer structure to eliminate contamination and run-off. 4.1.3 Angle of Sprayheads Sprayheads should normally be angled so as to m axi mise the width of the band of[...]

DRAFT 8 4.2.2 Parallel Connection The hydraulic motors of the Turbofan are normally connected in parallel. To calculate the hydraulic flow require d for a specific number of heads :- • each head runs at 4000 rpm • the oil flow required per moto r is 4000 x 2ml/rev = 8 1/min • add 10% for pump and other hydraulic losses = 8.8 l/min eg For 6 he[...]

DRAFT 9 4.2.4 Hydraulic Oil Flow If a Power Take Off (PTO) driven hydraulic pump is used, the pum p should be chosen to provide the calculated maximum oil flow plus losses and no more. If a larger pump were to be used, any unused oil would have to be by-passed and would generate heat. The specified output of the pump must match the calculated oil r[...]

DRAFT 10 TABLE 1 – Pressure drop along hydraulic hoses HOSE SIZE -4 -4 -5 -6 -6 -8 -8 -10 -10 -12 -12 -16 -16 -20 -20 -24 -24 HOSE I/D (IN) 0.19 0.25 0.25 0.31 0.38 0.41 0.50 0.50 0.63 0.63 0.75 0.88 1.00 1.13 1.25 1.38 1.5 0 HOSE I/D (mm) 4.82 6.3 6. 3 7.9 9.7 10.4 12.7 12.7 16.0 16.0 19.1 22.4 25.4 28.7 31.8 35.1 38. 1 OIL FLOW L/M UG/M 0.9 0..[...]

DRAFT 11 DRAIN LINES MUST BE FIT TED. TOTAL BACK PRESSURE OF COMBINED DRAIN LINES MUST NEVER EXCEED 3 BAR OR MOTOR SEAL FAI LURE WILL RESULT. b) On all return lines – assume that valves, fittings, etc can cause up to 10 psi (0.7 bar) back-pressure. Refer to Table 1 to sele ct hose sizes which gi ve a ma ximu m add i- tional pressure drop of 10 ps[...]

DRAFT 12 4.2.7 System Protection Any self-contained hydraulic system MUST be protected by a relief valve from the pres- sure side of the pump to the reservoir. Th is should be of the self re-setting type. • For parallel running this must be set to 120 bar (1800 PSI) minimum. • For series chains (two motors maximum) this must be set to 220 bar ([...]

DRAFT 13 Figure 6. Typical self-con tained hydraulic system SPRA Y HEA DS CONN ECTED IN P ARA LLEL CHECK VA LV E RELI EF VA LV E ON/OFFV AL VE RETURN FI L TER FILL ER/BREA THER OIL RESE RVOIR SU CTIO N S TRA IN ER PUMP PR ES SURE GAUGE PRES SURE SI DE F IL T ER FLOW CONTRO L[...]

DRAFT 14 CHEC K VA LV E FIL TER PRESS URE GA UG E FLOW CON TROL RE TURN LINE PRESS URE LINE FROM TR ACT OR OPEN CENT RE SYS TEM PRESS UR E SIDE FIL TER Figure 7. Typical systems connected to tractor hydraulics CHEC K VA LV E NEEDLE VA LV E FIL TER PRESSU RE GAUGE RET URN LINE PRESSURE L INE FR OM TRACTO R CLOS ED CENTR E SYST EM PRESSU RE SIDE FIL [...]

DRAFT 15 4.2.13 Filter All hydraulic systems MUST be filtered. For sprayers using the tractor’s hydraulic sys- tem, a return line filter with a 25 m icron re placeable cartridge and a full-flow by-pass re- lief valve should be fitted in the retu rn line to the tractor. A pressure side filter MU ST also be fitted in order to protect th e gear moto[...]

DRAFT 16 If a new sprayer is being desi gned or an original pump is to be replaced, it is suggested that a diaphragm or centrifugal type is chosen. This should be able to provide a pressure of about 1 – 3 bar (15 – 45 psi) and should be capable of delivering the maximum flow rate of the sprayer plus the fl ow required for tank agitation (if a m[...]

DRAFT 17 4.4 Testing Any new sprayer must be tested to ensure the following: 1. That the sprayheads all rotate at the correct speed. 2. That the chemical flow from each sprayhead is equal and that the f low can be adjusted over the fu ll range required. 3. That the sprayheads are corre ctly positione d to give the required coverage without any tend[...]

DRAFT 18 and the coverage assessed viewing the droplets with an ultra-violet lamp in the dark. 5.4 Sequence of Operation It is important that all s prayheads are rotating at their correct speed before the chem ical supply is turned on. Similarly, the chemic al supply m ust be shut off before the sprayheads are stopped. This ensures that a stream of[...]

DRAFT 19 The following recommendations are for guida nce only and do not ex clude any statut ory requirements: 1. Always wear adequate protective clothi ng, eye protection and re spiratory protection when mixing, transferring or spraying pesticides. The mi nimum level of protection will be stated on the chemical label or in the Code of Practices in[...]

DRAFT 20 DI S T A NCE TRA V ELLED IN ONE M I NUT E SW A TH W IDTH W MET RE S SPEED S KM/HR The following steps describe the ca libration proce dure in detail: 1. Establish the average forward speed of th e sprayer. The most accurate means of assessing the speed is to drive the sprayer in the actual crop. Th e speed can than be calculated from the t[...]

DRAFT 21 SPEED km/hr 4 6 8 10 15 20 25 30 4 0.03 0.04 0.05 0.07 0.10 0.13 0.17 0.20 6 0.04 0.06 0.08 0.10 0.15 0.20 0.25 0.30 8 0.05 0.08 0.1 1 0.13 0.20 0.27 0.33 0.40 10 0.07 0.10 0.13 0.17 0.25 0.33 0.42 0.50 12 0.08 0.12 0.16 0.20 0.30 0.40 0.50 0.60 14 0.09 0.14 0.19 0.23 0.35 0.47 0.58 0.70 SWATH WIDTH (metres) This is converted to hectares b[...]

DRAFT 22 RESTRICTOR No. FLOW RATE (litres/minute) 1 Bar (1 5 psi) 2 Bar (3 0 psi) 3 Bar (4 5 psi) 10 0.30 0.42 0.51 48 0.62 0.87 1.07 55 0.81 1.14 1.40 86 2.05 2.90 3.55 7. Fit the appropriate orifice in the fixed restrictor of each sprayhead. 8. Place a container under each sprayhead. 9. Ensure that the chemical on/off valve is closed. 10. Fill th[...]

DRAFT 23 8.0 MAINTENANCE The Turbofan Sprayhead is manufactured from high quality materials which have been selected for maximum strength, reliability an d resistance to agricultural products. In order to ensure a long and trouble-free working life, it is important that each sprayhead should be periodically checke d, cleaned and lubricated. 8.1 Rou[...]

DRAFT 24 1. Disconnect all hoses and rem ove sprayhead from the spraye r. Plug all free ends of hydraulic hoses on the sprayer and all ports on the hydraulic motor. 2. Remove atomiser (1) by unscrewing screw (7). 3. Remove frontplate (10) com plete with distributor (15) by unscrewing twelve screws, nuts and washers (2,8,4) and f our screws, nuts an[...]

DRAFT 25 TURBOF AN (BASIC) P AR TS LIST (TBF/200) PART NO. DESCRIPTION QTY 4915 SCREW, M5 X 16, S/S 4 5245 NUT, M4 NYLOC 2 5472 SCREW, M6 X 16, SET, HEX, S/S 24 5722 WASHER, M6, FLAT, S/S 36 5887 WASHER, M6 X 25 OD, PLAIN, S/S 1 5971 SCREW, M6 X 25, SET, HEX, S/S 12 5983 SCREW, M6 X 20, SET, HEX, S/S 1 5984 NUT, M6, NYLOC, S/S 36 6058 FAN COWL 1 60[...]

DRAFT 26 TURBOF AN P AR TS DIAGRAM 5971 6185 5722 5984 6184 6194 5971 5722 5984 6061 6266 5245 6256 6087 6207 6078 6077 6067 5984 6249 6277 6281 6282 6279 6280 6261A 6238 5722 6061 5984 5722 5971 6278 6068 6248 6138 6058 6079 6187 6186 6247 6187 4915 6182 5472 5887 5983 6182 6283 5984 6066 5472 5722 6277 6262 6263 MI CR ON A T O MI S E R M ICRONA I[...]

Since February 2003 the hydraulic motor driving th e Turbofan head has been fitted with a double oil seal arrangement. Between the two s eals there is a port connected to outside via the flange of the motor. This port is connect ed to a small "tell-tale " bottle of transparent plastic. A failure of the first seal will result in oil being [...]