micronAir AU8500, Руководство оператора

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12
MICRONAIR AU8500 ULV TREE SPRAYER
7. Set the Pump switch in the tractor cab to ON. Wait until a steady stream of
pesticide flows from the calibration tube.
8. Place a graduated jug or measuring cylinder under the calibration tube and
collect pesticide for a measured time (typically 1 or 2 minutes, depending upon
the flow rate and the size of the measuring container).
9. Set the
Pump switch to OFF
10. Check the volume of pesticide collected. Divide this by the time for the
measuremen to obtain the total flow rate from the sprayer.
IMPORTANT: Wear gloves, protective clothing and eye protection when
calibrating the sprayer. Return pesticide collected from the sprayhead to
the main tank and wash all measuring containers etc after use.
Example:
Volume collected: 0.9 l
Time to collect measured volume: 2 minutes
Flow rate (l/min) = Volume (l)
Time (min)
= 0.9 = 0.45 l/min (450 ml/min)
2
6.2.1. Calibration with Needle Valve
1. Ensure that there is no orifice disc fitted in the feed to the atomiser (inside
housing 1 in Fig. 2).
2. Set the needle valve (2 in Fig. 2) to approximately mid-position.
3. Check the calibration of the sprayer as described in section 6.2 above.
4. If the flow rate is too high, decrease the opening of the valve by turning the
adjusting knob in a clockwise direction. If the rate is too low, increase the flow by
turning the adjusting knob in an anti-clockwise direction.
5. Repeat steps (3) & (4) until the correct flow rate is obtained.
6.2.2. Calibration with Fixed Flow Restrictor
1. Refer to Table 2 below to determine the size of restrictor orifice disc that gives a
flow closest to the required rate.