15
MICRONAIR AU8500 ULV TREE SPRAYER
3. The sprayer should be protected from rain and prolonged direct sunlight when not
in use, either by leaving the machine under cover or by covering it with a
protective sheet.
7.2. Fan
Gearbox
The fan gearbox is filled with SAE 90 gear oil. The oil level is shown in the oil level
indicator at the side of the gearbox.
The oil in the gearbox should be changed after the first 50 hours of use and every
500 hours thereafter. The oil capacity of the gearbox is approximately 1.5 litres.
7.3. Pump, Pipework and Filter
The pesticide pump used on both the sprayer is a centrifugal pump magnetically
coupled to an electric motor. As the pump has a magnetic coupling there is no shaft
seal to wear or leak. The pump contains no user serviceable parts and should be
replaced as a complete assembly.
All hoses have a PTFE lining with a braided stainless steel outer covering and
crimped end fittings. Hoses cannot be repaired if they are damaged and must be
replaced with the appropriate Micronair spare parts.
There is a 50 mesh filter in the pesticide pipe between the tank and the pump. This
should be checked and cleaned after the first month (or 20 hours) use of the sprayer
and then every three months or after each 50 hours of operation, whichever occurs
first. The procedure to clean the filter is as follows:
1. CLOSE the
Filter Isolating
valve (2 in Fig. 1).
2. Place a shallow container with at least 0.5 l capacity under the bowl of the filter.
3. Unscrew the filter bowl and remove the filter screen.
4. Clean the filter screen and inside the inside of the filter bowl
5. Fit the screen inside the bowl and screw them back onto the filter body. Do not
over-tighten the thread.
6. OPEN the
Filter Isolating
valve.
IMPORTANT: Wear gloves and eye protection when working on the pump,
filter or pipework. Re-use any clean pesticide drained from the system and
dispose of any contaminated residues, cleaning cloths etc safely.
7.4. Atomiser
See Micronair AU8120 Atomiser Handbook for full maintenance instructions.
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