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5 - Operation
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WARNING! It is the responsibility of the sprayer operator or owner, that the sprayer is cleaned sufficiently to prevent
contamination of the environment, crop damages and health and safety hazards to the operator and the public.
HARDI cannot be held responsible for any damages or incidents related to insufficient cleaning.
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ATTENTION! The rinsing nozzles cannot always guarantee a 100% cleaning of the tank. Clean manually with a high
pressure cleaner afterwards, especially if the next crop is sensitive to the chemical just sprayed!
PrimeFlow - Manual Cleaning
In the event of an AutoWash failure, sprayers equipped with PrimeFlow can follow the same manual washing procedure as
described in this book, when the following detail is observed:
• Open all nozzles before flushing the spray lines. This is to prevent chemical residues from the boom lines are returned
into the main tank.
BoomFlush - Manual Cleaning
When having the BoomFlush valves fitted to the end(s) of boom piping, the cleaning procedure is as follows:
1. Follow the cleaning procedure to clean the sprayer the first two times.
2. Open all BoomFlush valves by hand.
3. Continue the cleaning procedure to clean the sprayer for the third time.
4. Close BoomFlush valves.
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WARNING! To prevent contamination of the soil, the BoomFlush valves must only be opened at the last step of
cleaning!
Technical Residue
An amount of spray liquid will inevitably remain in the system. It cannot be sprayed properly on the crop, as the pump takes
in air, when the tank is just about empty.
This technical residue is defined as the remaining amount of liquid in the system, when the first clear pressure drop appears
on the pressure gauge.
The residues in the tank should be diluted immediately in a ratio of 1:10 with clean water. Afterwards it should be sprayed
on the crop just sprayed with increased driving speed.
In addition, also pump, linkage and armature can be separately rinsed with water from the rinsing tank. However, it must be
ensured that the liquid in the spray lines are in unchanged concentration. Therefore there should be an untreated field area
available to spray this liquid out.
Follow national regulations when disposing of chemical residues.
Using the Drain Valve
The drain valve is operated from the rear of the tank.
1. Pull the handle downward to open the drain valve.
2. The valve is spring-loaded, but can be kept open by pulling the
handle upwards in the V-shaped slit.
3. To release, pull the handle downward and the valve will close
automatically.
If draining residues, e.g. liquid fertilizer into a reservoir, a snap coupler
with hose can rapidly be connected to the drain valve, and the liquid is
safely drained.
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